CA2497308A1 - Phase shifted time slice transmission to improve handover - Google Patents

Phase shifted time slice transmission to improve handover Download PDF

Info

Publication number
CA2497308A1
CA2497308A1 CA002497308A CA2497308A CA2497308A1 CA 2497308 A1 CA2497308 A1 CA 2497308A1 CA 002497308 A CA002497308 A CA 002497308A CA 2497308 A CA2497308 A CA 2497308A CA 2497308 A1 CA2497308 A1 CA 2497308A1
Authority
CA
Canada
Prior art keywords
base station
data packets
phase shift
group
channel burst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002497308A
Other languages
French (fr)
Other versions
CA2497308C (en
Inventor
Harri Pekonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Technologies Oy
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2497308A1 publication Critical patent/CA2497308A1/en
Application granted granted Critical
Publication of CA2497308C publication Critical patent/CA2497308C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS

Abstract

The present invention provides methods and apparatus for a wireless system, broadcasting a plurality of data packets to at least one wireless terminal (115). The wireless system comprises a plurality of base stations (103, 105) that interfaces to a backbone network (107) in order to receive the plurality of data packets from a service source (101). Data packets are sent to a wireless terminal by a first base station transmitting a first channel burst and by a second base station transmitting a second channel burst, in which corresponding time offsets of the channel bursts, as characterized by amounts phase shifts, are different. Consequently, when the wireless terminal executes a handover from the first base station to the second base station, a probability that some of the data packets are lost, as result of practical network considerations, is reduced.

Claims (44)

1. A method of receiving a plurality of data packets from a wireless system by a wireless terminal, the wireless system comprising a first base station and a second base station, the method comprising the steps of:
(a) determining a first amount of phase shift that is associated with a current first channel burst that comprises a first group of data packets, wherein the first amount of phase shift is associated with the first base station and wherein the first amount of phase shift is different from a second phase shift that is associated with the second base station; and (b) receiving the current first channel burst in accordance with the first amount of phase shift.
2. The method of claim 1, wherein the first group of packets is associated with a first data service.
3. The method of claim 2, wherein the wireless system serves a digital broadband broadcasting area and the first data service is associated with a digital broadband broadcasting service.
4. The method of claim 2, wherein the first group of packets is associated with a second data service.
5. The method of claim 1, further comprising the steps of:
(c) determining a time period, wherein the time period is a time difference between the current first channel burst and a subsequent first channel burst;
and (d) receiving the subsequent first channel burst at a time that is offset by the time period with respect to the current first channel burst.
6. The method of claim 5, wherein step (c) comprises the step of:
receiving information about the time period in the current first channel burst.
7. The method of claim 1, further comprising the steps of:
(c) determining the second amount of phase shift that is associated with the second base station;
(d) measuring a first signal characteristic of a first signal that is transmitted by the first base station;
(e) measuring a second characteristic of a second signal that is transmitted by the second base station;
(f) if the first signal characteristic satisfies a first predefined criterion and if the second signal characteristic satisfies a second predefined criterion, switching reception from the first base station to the second base station; and (g) in response to step (f), receiving a second channel burst from the second base station in accordance with the second amount of phase shift, wherein the second channel burst comprises a second group of data packets.
8. The method of claim 7, further comprising the steps:
(h) if numbering of the second group of data packets is not consecutive, rearranging data packets of the second group of data packets so that the numbering is consecutive; and (i) if duplicate data packets are received within the second group of data packets, discarding one of the duplicate data packets.
9. The method of claim 7, wherein the first signal characteristic and the second signal characteristic correspond to a signal attribute selected from a group consisting of a received signal strength indicator (RSSI) value, a bit error rate (BER), and a packet error rate (PER).
10. The method of claim 7, wherein step (c) comprises the step of:
receiving information about the second amount of phase shift in an initial cell.
11. The method of claim 1, further comprising the steps of:
(c) determining the second amount of phase shift that is associated with the second base station;
(d) measuring a first signal characteristic of a first signal that is transmitted by the first base station;
(e) measuring a second characteristic of a second signal that is transmitted by the second base station;
(f) sending the first signal characteristic and the second signal characteristic to the first base station;
(g) if instructed by the first base station, switching reception from the first base station to the second base station; and (h) in response to step (g), receiving a second channel burst from the second base station in accordance with the second amount of phase shift, wherein the second channel burst comprises a second group of data packets.
12. The method of claim 11, further comprising the steps of:
(i) if numbering of the second group of data packets is not consecutive, rearranging data packets of the second group of data packets so that the numbering is consecutive; and (j) if duplicate data packets are received within the second group of data packets, discarding one of the duplicate data packets.
13. The method of claim 1, further comprising the steps of:
(c) determining a third amount of phase shift that is associated with a third channel burst that comprises a third group of data packets, wherein the third amount of phase shift is associated with the first base station; and (d) receiving the third channel burst in accordance with the third amount of phase shift.
14. The method of claim 1, wherein the first base station is associated with a first center frequency value and the second base station is associated with a second center frequency value.
15. The method of claim 1, wherein the first base station is associated with a first channelization code and the second base station is associated with a second channelization code.
16. The method of claim 2, wherein the first data service is an Internet Protocol (IP) service.
17. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 1.
18. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 7.
19. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 8.
20. A wireless terminal that receives a plurality of data packets from a wireless system, the wireless system comprising a first base station and a second base station, comprising:
a storage buffer;
a timing module;
a radio module that communicates with the wireless system over a radio channel;
a processor that receives an indication from the timing module that a current first channel burst is being transmitted, wherein the current first channel burst contains a first group of data packets, and that stores the first group of data packets into the storage buffer, the processor configured to perform the steps of:
(a) determining a first amount of phase shift that is associated with the current first channel burst that comprises the first group of data packets, wherein the first amount of phase shift is associated with the first base station and wherein the first amount of phase shift is different from a second phase shift that is associated with the second base station; and (b) receiving the current first channel burst in accordance with the first amount of phase shift.
21. The wireless terminal of claim 20, wherein the wireless system serves a digital broadband broadcasting area and the first group of data packets is associated with a digital broadband broadcasting service.
22. The wireless terminal of claim 20, wherein the processor is configured to perform the further steps of:
(c) determining a time period, wherein the time period is a time difference between the current first channel burst and a subsequent first channel burst;
and (d) receiving the subsequent first channel burst at a time that is offset by the time period with respect to the current first channel burst.
23. The wireless terminal of claim 20, wherein the processor is configured to perform the further steps of:
(c) determining the second amount of phase shift that is associated with the second base station;
(d) measuring a first signal characteristic of a first signal that is transmitted by the first base station;
(e) measuring a second characteristic of a second signal that is transmitted by the second base station;
(f) if the first signal characteristic satisfies a first predefined criterion and if the second signal characteristic satisfies a second predefined criterion, switching reception from the first base station to the second base station; and (g) in response to step (f), receiving a second channel burst from the second base station in accordance with the second amount of phase shift, wherein the second channel burst comprises a second group of data packets.
24. The wireless terminal of claim 23, wherein the processor is configured to perform the further steps of:
(h) if numbering of the second group of data packets is not consecutive, rearranging data packets of the second group of data packets so that the numbering is consecutive; and (i) if duplicate data packets are received within the second group of data packets, discarding one of the duplicate data packets.
25. The wireless terminal of claim 20, wherein the processor is configured to perform the further steps of:
(c) determining the second amount of phase shift that is associated with the second base station;
(d) measuring a first signal characteristic of a first signal that is transmitted by the first base station;
(e) measuring a second characteristic of a second signal that is transmitted by the second base station;
(f) sending the first signal characteristic and the second signal characteristic to the first base station;
(g) if instructed by the first base station, switching reception from the first base station to the second base station; and (h) in response to step (g), receiving a second channel burst from the second base station in accordance with the second amount of phase shift, wherein the second channel burst comprises a second group of data packets.
26. The wireless terminal of claim 20, wherein the processor is configured to perform the further steps of:
(c) determining a third amount of phase shift that is associated with a third channel burst that comprises a third group of data packets, wherein the third amount of phase shift is associated with the first base station; and (d) receiving the third channel burst in accordance with the third amount of phase shift.
27. A method for broadcasting a plurality of data packets by a wireless system to a wireless terminal, the wireless system comprising a first base station and a second base station, the method comprising the steps of:
(a) mapping a first group of data packets to a current first channel burst;
(b) determining a first amount of phase shift that corresponds to the current first channel burst, wherein the first amount of phase shift is different from a second phase shift that is associated with the second base station; and (c) transmitting the current first channel burst that corresponds to the first amount of phase shift.
28. The method of claim 27, wherein the wireless system serves a digital broadband broadcasting area and the first group of data packets is associated with a digital broadband broadcasting service.
29. The method of claim 27, wherein the first group of data packets is associated with a first data service.
30. The method of claim 29, wherein the first group of data packets is associated with a second data service.
31. The method of claim 27, further comprising the steps of (d) determining a time period, wherein the time period is a time difference between the current first channel burst and a subsequent first channel burst;
and (e) transmitting the subsequent first channel burst at the time period with respect to the current first channel burst.
32. The method of claim 31, comprising the further step of:
(f) including information about the time period in the current first channel burst.
33. The method of claim 27, further comprising the step of:
(d) including information about the second amount of phase shift in the current first channel burst, wherein the second amount of phase shift corresponds to a second group of data packets that is transmitted by the second base station.
34. The method of claim 27, further comprising the steps of:
(d) receiving, by the first base station, a first signal characteristic that is indicative of a first signal that is transmitted by the first base station and that is measured by the wireless terminal and a second signal characteristic that is indicative of a second signal that is transmitted by the second base station and that is measured by the wireless terminal;
(e) determining whether the wireless terminal should be served by the second base station in accordance with the first and second signal characteristics; and (f) sending an instruction to the wireless terminal to switch base stations in response to step (e).
35. The method of claim 27, wherein the first base station is associated with a first center frequency value and the second base station is associated with a second center frequency value.
36. The method of claim 35, wherein a number of center frequency values in the wireless system is equal to N, and wherein the amount of phase shift is equal to 360 degrees divided by N multiplied by an integer.
37. The method of claim 27, where the first base station is associated with a first channelization code and the second base station is associated with a second channelization code.
38. The method of claim 27, further comprising the steps of:
(d) mapping a third group of data packets to a third channel burst that is associated with the first base station;
(e) determining a third amount of phase shift that corresponds to the third channel burst; and (f) transmitting the third channel burst that corresponds to the third amount of phase shift.
39. The method of claim 27, wherein the first group of data packets is associated with a first data service and wherein the first data service is an Internet Protocol (IP) service.
40. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 27.
41. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 33.
42. A base station that broadcasts a first group of data packets to a wireless terminal, comprising:
a timing module;
a storage buffer;
a network interfacing module that receives a first group of data packets from a backbone network, wherein the first group of data packets is associated with a digital broadband broadcasting service;
a radio module that communicates with the wireless terminal over a radio channel;
a processor that stores the first group of packets in the storage buffer, receives an indication from the timing module that a current first channel burst should be transmitted, and retrieves the first group of data packets from the storage buffer, the processor configured to perform the steps of:
(a) mapping the first group of data packets to the current first channel burst, wherein the first group of data packets is associated with a first data service;
(b) determining a first amount of phase shift that corresponds to the current first channel burst; and (c) transmitting, through the radio module, the current first channel burst that corresponds to the first amount of phase shift.
43. The base station of claim 42, wherein the processor is configured to perform the further steps of:
(d) including information about a second amount of phase shift in the current first channel burst, wherein the second amount of phase shift is associated with a second base station and the first data service.
44. A method of receiving a plurality of data packets from a wireless system by a wireless terminal, the wireless system comprising a first base station and a second base station, the method comprising the steps of:
(a) determining a first amount of phase shift that is associated with a first channel burst that comprises a first group of data packets, wherein the first group of data packets is associated with a digital broadband broadcasting service and wherein the first amount of phase shift is associated with the first base station and the first data seance;
(b) receiving the first channel burst in accordance with the first amount of phase shift;
(c) determining a second amount of phase shift that is associated with the second base station and the digital broadband broadcasting service;
(d) measuring a first signal characteristic of a first signal that is transmitted by the first base station;
(e) measuring a second characteristic of a second signal that is transmitted by the second base station;
(f) if the first signal characteristic satisfies a first predefined criterion and if the second signal characteristic satisfies a second predefined criterion, switching reception from the first base station to the second base station;
(g) in response to step (f), receiving a second channel burst from the second base station in accordance with the second amount of phase shift, wherein the second channel burst comprises a second group of data packets that is associated with the digital broadband broadcasting service;
(h) if numbering of data packets is not consecutive, rearranging data packets of the second group of data packets so that the numbering is consecutive; and (i) if duplicate data packets are received within the second group of data packets, discarding one of the duplicate data packets.
CA2497308A 2002-09-09 2003-09-04 Phase shifted time slice transmission to improve handover Expired - Fee Related CA2497308C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/237,404 US7058034B2 (en) 2002-09-09 2002-09-09 Phase shifted time slice transmission to improve handover
US10/237,404 2002-09-09
PCT/IB2003/003753 WO2004023695A2 (en) 2002-09-09 2003-09-04 Phase shifted time slice transmission to improve handover

Publications (2)

Publication Number Publication Date
CA2497308A1 true CA2497308A1 (en) 2004-03-18
CA2497308C CA2497308C (en) 2010-12-21

Family

ID=31977712

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2497308A Expired - Fee Related CA2497308C (en) 2002-09-09 2003-09-04 Phase shifted time slice transmission to improve handover

Country Status (11)

Country Link
US (2) US7058034B2 (en)
EP (1) EP1535479B1 (en)
JP (1) JP4559857B2 (en)
KR (1) KR100623269B1 (en)
CN (1) CN100556208C (en)
AT (1) ATE476798T1 (en)
AU (1) AU2003259410A1 (en)
BR (1) BR0313933A (en)
CA (1) CA2497308C (en)
DE (1) DE60333649D1 (en)
WO (1) WO2004023695A2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7058034B2 (en) * 2002-09-09 2006-06-06 Nokia Corporation Phase shifted time slice transmission to improve handover
GB2403630A (en) 2003-06-30 2005-01-05 Nokia Corp Adjusting data burst transmission rates in broadcast services
US7568111B2 (en) 2003-11-11 2009-07-28 Nokia Corporation System and method for using DRM to control conditional access to DVB content
FR2864389B1 (en) * 2003-12-23 2006-03-03 Eads Telecom METHOD FOR SYNCHRONIZATION ON THE RUNWAY OF A SIMULCAST NETWORK
US7660583B2 (en) 2004-03-19 2010-02-09 Nokia Corporation Advanced handover in phased-shifted and time-sliced networks
JP4480461B2 (en) 2004-05-20 2010-06-16 株式会社エヌ・ティ・ティ・ドコモ Mobile communication system and radio control apparatus
US7508839B2 (en) * 2004-07-09 2009-03-24 Nokia Corporation Encapsulator and an associated method and computer program product for encapsulating data packets
US7668509B2 (en) * 2004-09-24 2010-02-23 Sensor And Antenna Systems, Lansdale, Inc. Frequency selective leveling loop for multi-signal phased array transmitters
KR100895173B1 (en) 2005-08-31 2009-05-04 삼성전자주식회사 Handover method and apparatus for digital multimedia broadcasting systems
US7680075B2 (en) * 2006-05-17 2010-03-16 Alcatel-Lucent Usa Inc. Identification of base stations
CN100574230C (en) * 2006-08-30 2009-12-23 鸿富锦精密工业（深圳）有限公司 Remote control, wireless family network system and automatic switch broadcasting method
EP2040492A1 (en) * 2007-09-18 2009-03-25 Thomson Licensing Access network handover for a mobile television system
KR100967605B1 (en) * 2007-12-24 2010-07-05 한국방송공사 Method for a Handover in Digital Multimedia Broadcasting
US9456326B2 (en) * 2008-07-24 2016-09-27 Cable Television Laboratories, Inc. Method and system of supporting continuous access to content transmitted over two or more networks
US20110292859A1 (en) * 2008-11-25 2011-12-01 Zte (Usa) Inc. Mobility management method and system for multicast and broadcast services
US8654625B2 (en) * 2009-02-02 2014-02-18 Lg Electronics Inc. Method and apparatus for transmitting data performed by at least one base station in wireless communication system
JP5796201B2 (en) * 2010-06-21 2015-10-21 パナソニックＩｐマネジメント株式会社 Access point terminal, wireless communication terminal, wireless communication system, wireless communication method, program, and integrated circuit
JP6149857B2 (en) * 2011-05-16 2017-06-21 マイクロソフト テクノロジー ライセンシング，エルエルシー Multi-data communication system
JP6447911B2 (en) 2012-05-22 2019-01-09 サン パテント トラスト Transmission method, reception method, transmission device, and reception device
US10708798B2 (en) * 2015-12-29 2020-07-07 Telefonaktiebolaget Lm Ericsson (Publ) Network performance framework for wireless local area networks

Family Cites Families (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449248A (en) 1982-02-01 1984-05-15 General Electric Company Battery saving radio circuit and system
US4601586A (en) * 1984-02-10 1986-07-22 Prime Computer, Inc. Solicited message packet transfer system
US5224152A (en) 1990-08-27 1993-06-29 Audiovox Corporation Power saving arrangement and method in portable cellular telephone system
SE9003913D0 (en) 1990-12-07 1990-12-07 Ericsson Telefon Ab L M A METHOD OF LOCATING A MOBILE STATION IN A CELLULAR MOBILE RADIO SYSTEM
FR2671923B1 (en) 1991-01-17 1993-04-16 France Etat DEVICE FOR CONSISTENT DEMODULATION OF DIGITAL DATA INTERLACED IN TIME AND IN FREQUENCY, WITH ESTIMATION OF THE FREQUENTIAL RESPONSE OF THE TRANSMISSION AND THRESHOLD CHANNEL, AND CORRESPONDING TRANSMITTER.
US5359607A (en) * 1991-11-13 1994-10-25 Motorola, Inc. Adaptive intermodulation control
US5710798A (en) * 1992-03-12 1998-01-20 Ntp Incorporated System for wireless transmission and receiving of information and method of operation thereof
US5819000A (en) 1992-03-26 1998-10-06 Matsushita Electric Industrial Co., Ltd. Magnetic recording and playback apparatus
FI98672C (en) 1992-04-24 1997-07-25 Nokia Telecommunications Oy radio system
FI91345C (en) 1992-06-24 1994-06-10 Nokia Mobile Phones Ltd A method for enhancing handover
US5371734A (en) 1993-01-29 1994-12-06 Digital Ocean, Inc. Medium access control protocol for wireless network
US5568513A (en) 1993-05-11 1996-10-22 Ericsson Inc. Standby power savings with cumulative parity check in mobile phones
FI97594C (en) 1993-07-05 1997-01-10 Nokia Telecommunications Oy Time division multiple access radio system, method for allocating capacity within a cell and method for performing intra-cell handover
US6167248A (en) 1993-09-06 2000-12-26 Nokia Mobile Phones Ltd. Data transmission in a radio telephone network
FI103442B (en) * 1993-09-24 1999-06-30 Nokia Telecommunications Oy Digital radio link system and radio link device
JPH07284141A (en) * 1994-04-08 1995-10-27 Oki Electric Ind Co Ltd Hand-over method
EP0982907B1 (en) 1994-05-09 2005-03-09 Victor Company Of Japan, Limited Reference subcarrier setting for multicarrier transmission
US5657313A (en) 1994-05-09 1997-08-12 Victor Company Of Japan, Ltd. Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing
US5614914A (en) * 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
US6175557B1 (en) 1994-10-31 2001-01-16 Telefonaktiebolaget Lm Ericsson (Publ) Layer 2 protocol in a cellular communication system
US5745860A (en) 1994-12-16 1998-04-28 Telefonaktiebolaget Lm Ericsson Method and system of data transmission and reception in a mobile station within a radio telecommunications system
FI98586C (en) 1995-01-10 1997-07-10 Nokia Telecommunications Oy Packet radio system and methods for protocol-independent routing of a data packet in packet radio networks
DK2302807T3 (en) 1995-02-01 2013-07-29 Sony Corp Multichannel transmission with interleaving when addressing on-site RAM
US5710756A (en) 1995-02-13 1998-01-20 Netro Corporation Burst-error resistant ATM microwave link and network
US5883899A (en) 1995-05-01 1999-03-16 Telefonaktiebolaget Lm Ericsson Code-rate increased compressed mode DS-CDMA systems and methods
FI952844A (en) 1995-06-09 1996-12-10 Nokia Mobile Phones Ltd Procedure for improving transmission
US5613235A (en) 1995-06-29 1997-03-18 Nokia Mobile Phones Limited Operation of a radiotelephone in a synchronous extended standby mode for conserving battery power
US6356555B1 (en) 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
US5848103A (en) * 1995-10-04 1998-12-08 Lucent Technologies Inc. Method and apparatus for providing time diversity
US5959995A (en) * 1996-02-22 1999-09-28 Fujitsu, Ltd. Asynchronous packet switching
US6021122A (en) * 1996-06-07 2000-02-01 Qualcomm Incorporated Method and apparatus for performing idle handoff in a multiple access communication system
US5936965A (en) * 1996-07-08 1999-08-10 Lucent Technologies, Inc. Method and apparatus for transmission of asynchronous, synchronous, and variable length mode protocols multiplexed over a common bytestream
US5886995A (en) 1996-09-05 1999-03-23 Hughes Electronics Corporation Dynamic mapping of broadcast resources
FR2755338B1 (en) 1996-10-24 1999-01-08 Matra Transport International CELLULAR SYSTEM FOR RADIO TRANSMISSION OF INFORMATION BETWEEN AN INFRASTRUCTURE AND MOBILES
US6101180A (en) 1996-11-12 2000-08-08 Starguide Digital Networks, Inc. High bandwidth broadcast system having localized multicast access to broadcast content
US6549242B1 (en) 1997-04-04 2003-04-15 Harris Corporation Combining adjacent TV channels for transmission by a common antenna
EP0881785A1 (en) * 1997-05-29 1998-12-02 Alcatel Telecommunication system, radio system, and method
FR2764467B1 (en) 1997-06-09 1999-07-30 Alsthom Cge Alcatel TRANSMISSION OF THE PILOT INFORMATION CHANNEL OF EACH OPERATOR IN A RADIO COMMUNICATION SYSTEM WITH MOBILE STATIONS
US6088412A (en) 1997-07-14 2000-07-11 Vlsi Technology, Inc. Elastic buffer to interface digital systems
JP3235655B2 (en) 1997-12-01 2001-12-04 日本電気株式会社 Fixed-length packet multiplexer for low-speed general-purpose data with burst characteristics
SE511365C2 (en) * 1998-01-23 1999-09-20 Ericsson Telefon Ab L M antenna switching
DE69943190D1 (en) 1998-03-02 2011-03-31 Panasonic Corp Method and device for the remote charging of a desired part of a continuous medium with increased accuracy
US6285686B1 (en) 1998-03-19 2001-09-04 Hewlett-Packard Company Using page registers for efficient communication
US6295450B1 (en) 1998-06-23 2001-09-25 Motorola, Inc. Method and apparatus for transferring communication within a communication system
US6339713B1 (en) 1998-08-11 2002-01-15 Telefonaktiebolaget Lm Ericsson Decreasing battery consumption of mobile terminals by decreasing monitoring of the multiple access channel downlinks
US6160804A (en) * 1998-11-13 2000-12-12 Lucent Technologies Inc. Mobility management for a multimedia mobile network
SE9804420L (en) 1998-12-17 2000-06-18 Ericsson Telefon Ab L M Method for reducing power consumption in portable radio communication systems during standby mode, as well as a mobile station adapted to reduce power consumption during standby mode
GB2347828B (en) * 1999-03-05 2004-05-19 Internat Mobile Satellite Orga Communication methods and apparatus
US6804311B1 (en) * 1999-04-08 2004-10-12 Texas Instruments Incorporated Diversity detection for WCDMA
EP1169836B1 (en) 1999-04-18 2003-07-16 Video Networks Incorporated System and method for dynamic time and bandwidth allocation
US6266536B1 (en) 1999-05-03 2001-07-24 Ericsson Inc. System and method for dynamic overlap compensation in a simulcast network
US6385264B1 (en) * 1999-06-08 2002-05-07 Qualcomm Incorporated Method and apparatus for mitigating interference between base stations in a wideband CDMA system
US6320855B1 (en) * 1999-09-09 2001-11-20 Qualcom Incorporated Method and system for initiating idle handoff in a wireless communications system
US6721315B1 (en) * 1999-09-30 2004-04-13 Alcatel Control architecture in optical burst-switched networks
US6490727B1 (en) 1999-10-07 2002-12-03 Harmonic, Inc. Distributed termination system for two-way hybrid networks
WO2001031963A1 (en) 1999-10-29 2001-05-03 Telefonaktiebolaget L M Ericsson (Publ) Mobile terminal handover from a second generation network to a third generation ip-based network
DE10000942C2 (en) * 2000-01-12 2003-04-17 Siemens Ag Time division multiplex transmission of data bits
US7027493B2 (en) * 2000-01-19 2006-04-11 Time Domain Corporation System and method for medium wide band communications by impluse radio
FI20000662A (en) 2000-03-21 2001-09-22 Nokia Oyj Cell exchange in a network that supports multiple mediation techniques
US6477382B1 (en) 2000-06-12 2002-11-05 Intel Corporation Flexible paging for packet data
GB2364478A (en) 2000-06-30 2002-01-23 Nokia Oy Ab Cellular broadcast system responsive to distribution of demand
GB2364209A (en) 2000-06-30 2002-01-16 Nokia Oy Ab Combined digital video broadcast receiver and cellular receiver
GB2364211A (en) 2000-06-30 2002-01-16 Nokia Oy Ab A terminal comprising two receivers for receiving an encrypted first signal from a first network and a decryption second signal from a second network
JP3951566B2 (en) * 2000-07-10 2007-08-01 株式会社日立製作所 Location measurement service providing method, location measurement system, base station, server, and location information providing method using a CDMA cellular phone system
JP3889919B2 (en) 2000-08-31 2007-03-07 株式会社日立製作所 Information distribution method, information reception method, information distribution system, information distribution apparatus, reception terminal, and storage medium
FI20002129A (en) * 2000-09-28 2002-03-29 Nokia Corp A method and arrangement for wirelessly sharing a local broadband data stream
US7158493B1 (en) * 2000-09-29 2007-01-02 Arraycomm, Llc Radio communications system with a minimal broadcast channel
JP3498704B2 (en) * 2000-12-12 2004-02-16 日本電気株式会社 Radio channel control device, method of improving reception characteristics thereof, and recording medium recording reception characteristics improvement program
US7433683B2 (en) * 2000-12-28 2008-10-07 Northstar Acquisitions, Llc System for fast macrodiversity switching in mobile wireless networks
GB2374771B (en) 2000-12-29 2004-07-07 Vtech Communications Ltd Frame structure with diversity
US6665540B2 (en) * 2001-02-02 2003-12-16 Nokia Mobile Phones, Ltd. Method and system for locating a mobile terminal in a cellular radio network
US7349691B2 (en) * 2001-07-03 2008-03-25 Microsoft Corporation System and apparatus for performing broadcast and localcast communications
US20030108087A1 (en) * 2001-12-06 2003-06-12 Itzhak Shperling Method and base station for providing transmit diversity
US7130313B2 (en) * 2002-02-14 2006-10-31 Nokia Corporation Time-slice signaling for broadband digital broadcasting
US20040029591A1 (en) * 2002-08-07 2004-02-12 Nortel Networks Limited Method and apparatus for accommodating high bandwidth traffic on a wireless network
US7058034B2 (en) * 2002-09-09 2006-06-06 Nokia Corporation Phase shifted time slice transmission to improve handover
US7486640B2 (en) * 2004-10-20 2009-02-03 Nokia Corporation Signaling mechanism for handover in digital broadcasting

Also Published As

Publication number Publication date
US7894399B2 (en) 2011-02-22
DE60333649D1 (en) 2010-09-16
CA2497308C (en) 2010-12-21
KR100623269B1 (en) 2006-09-12
EP1535479B1 (en) 2010-08-04
US7058034B2 (en) 2006-06-06
US20040047311A1 (en) 2004-03-11
WO2004023695A3 (en) 2004-06-03
AU2003259410A1 (en) 2004-03-29
AU2003259410A8 (en) 2004-03-29
JP2005538594A (en) 2005-12-15
EP1535479A2 (en) 2005-06-01
US20060126566A1 (en) 2006-06-15
ATE476798T1 (en) 2010-08-15
CN1682544A (en) 2005-10-12
EP1535479A4 (en) 2007-04-04
KR20050028060A (en) 2005-03-21
CN100556208C (en) 2009-10-28
JP4559857B2 (en) 2010-10-13
WO2004023695A2 (en) 2004-03-18
BR0313933A (en) 2005-08-09

Similar Documents

Publication Publication Date Title
CA2497308A1 (en) Phase shifted time slice transmission to improve handover
RU2513705C2 (en) Multi-carrier wireless communication device and method
JP4312798B2 (en) Access point selection based on received signal quality measurements
US7664087B2 (en) Method for generating a frame in an orthogonal frequency division multiple access communication system
CA2580016C (en) Measurement support for a smart antenna in a wireless communication system
CN1943264B (en) Advanced handover in phased-shifted and time-sliced networks
RU2420888C2 (en) Wireless communication device and method
AU2007309945B2 (en) Procedure for non synchronized radio access (NSRA) resource assignment
JP4542997B2 (en) Wireless communication apparatus and wireless communication method
US8442019B2 (en) Method and apparatus for avoiding wireless audio signal transmission interferences
US20020122393A1 (en) Antenna diversity in a wireless local area network
US20190349280A1 (en) Range measurement with closed-loop feedback on rtt quality
JP2005538594A5 (en)
WO2001026236A1 (en) A method and an arrangement relating to mobile radio systems with the possibility of switching channel coding schemes
US8983467B2 (en) Method and apparatus for access point selection using channel correlation in a wireless communication system
CA2513346A1 (en) Wireless packet communication method and wireless packet communication apparatus
US20050255807A1 (en) Base station device and adaptive modulation method
US20080137594A1 (en) Apparatus and method for increasing a service coverage area of a broadcast channel in wireless communication system by using an harq scheme
WO2007024356A2 (en) System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network
KR20080047022A (en) Location measuring apparatus and method for the location information provision of repeater unit, system and method for location base service using its
EP4297353A1 (en) Vehicular communication protocols with co-channel coexistence and inter-symbol interferance calculation
GB2441373A (en) A method of determining location in a mobile device

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170905