CN103796328A - Scheduling method and device for dedicated physical channel of high-speed packet-access carrier waves - Google Patents
Scheduling method and device for dedicated physical channel of high-speed packet-access carrier waves Download PDFInfo
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Abstract
The invention provides a scheduling method and device for a DPCH (dedicated physical channel) of HSPA (high speed packet access) carrier waves. The method includes: according to the attributes of the HSPA carrier waves and HSPA uplink and downlink user numbers, judging whether a DPCH is needed to be added to a time slot 0TS0 of the HSPA carrier waves; and when the DPCH is needed to be added, configuring the frame division multiplexing DPCH according to the code-channel power of the TS0. Through the attributes of the HSPA carrier waves of a TD-SCDMA, the DPCH scheduling method and device for the HSPA carrier waves configure dynamically the DPCH on the TS0 of the HSPA carrier waves and expand HSPA carrier-frequency downlink DPCH channel resources so that capacity of the HSPA carrier waves is improved, code-power balance of an HSPA carrier-frequency uplink and downlink accompanying DPCH is realized, capability for overall access user number of the HSPA carrier waves is improved and frequency-spectrum resource utilization maximization is realized.
Description
Technical field
The present invention relates to Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) wireless communication technology, relate in particular to a kind of high-speed packet access (High Speed Packet Access, HSPA) carrier-specific physical channel (Dedicated Physical Channel, DPCH) dispatching method and device.
Background technology
TD-SCDMA adopts the duplex mode of TDD, by adjusting the proportioning of uplink and downlink timeslot, can support preferably non-symmetrical service; Wherein, the subframe structure of TD-SCDMA comprises uplink pilot time slot (UpPTS), protection interval (GP), descending pilot frequency time slot (DwPTS) and seven business time-slots of time slot 0～time slot 6 (TS0～TS6); TS0 is downlink broadcast time slot; for delivery system broadcast; TS1～TS6 is general service time slot; can be according to the needs of up-downgoing transfer of data; be configured to different uplink and downlink timeslot ratios; for example: the uplink and downlink timeslot proportioning of existing network carrier wave main flow is 2: 4 at present; be that TS1～TS2 is ascending time slot, TS3～TS6 is descending time slot.
At present, for the up-downgoing transmittability of further enhancing system, TD-SCDMA system has been introduced HSPA technology, and described HSPA technology comprises high speed downlink packet access (HSDPA) technology and high speed uplink packet access (HSUPA) technology.Wherein, HSUPA carrier wave, compared with HSDPA carrier wave, has newly increased the channels such as E-HICH, E-AGCH, FPACH, ERUCCH, EPUCH; Wherein, described E-HICH, E-AGCH, FPACH, ERUCCH are in order to realize HSUPA calling service, the channel for shared overhead newly increasing, and described E-HICH, E-AGCH, FPACH are descending shared overhead, therefore, descending shared overhead is with respect to up multiplex four code channel resources, can be for the corresponding minimizing of user's downlink resource, cause the unbalanced of HSPA carrier wave up-downgoing resource, make power system capacity be limited to downlink resource.
Further, along with the sharply increase of wireless data service, in user and heavy traffic region, in TD-SCDMA network there is bottleneck in the capacity of HSPA carrier wave, directly affected user's access and the foundation of business.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of HSPA carrier wave DPCH dispatching method and device, can improve HSPA carrier capacity.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of high-speed packet access (HSPA) carrier-specific physical channel (DPCH) dispatching method, described method comprises:
According to the attribute of described HSPA carrier wave and uplink and downlink number of users, judge whether the TS0 of described HSPA carrier wave needs to increase DPCH;
In the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
Wherein, described according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judge whether the TS0 of described HSPA carrier wave needs the method that increases DPCH to be specially:
When described HSPA carrier wave is main carrier and uplink and downlink access customer number when not identical, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
Wherein, described according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judge whether the TS0 of described HSPA carrier wave needs the method that increases DPCH to be specially:
In the time that described HSPA carrier wave is auxiliary carrier wave, judge that whether described HSPA carrier wave is frequently same with the main carrier of adjacent area, in the time of difference frequency, judge that whether uplink and downlink access customer number is identical;
In the time that described uplink and downlink access customer number is not identical, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
Wherein, the described code channel power configuration DPCH according to described TS0 is:
Determine configurable code channel number according to the current power surplus of described TS0, according to described configurable code channel number, on described TS0, increase DPCH.
Further, described method also comprises:
In the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stop increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function.
A kind of HSPA carrier wave DPCH dispatching device, comprising: judge module and configuration module; Wherein,
Described judge module, for according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judges whether the TS0 of described HSPA carrier wave needs to increase DPCH;
Described configuration module, in the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
Wherein, described judge module, specifically for when described HSPA carrier wave being main carrier and uplink and downlink access customer number when not identical, judgement need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
Wherein, described judge module, specifically in the time that described HSPA carrier wave is auxiliary carrier wave, judges that whether described HSPA carrier wave is frequently same with the main carrier of adjacent area, in the time of difference frequency, judges that whether uplink and downlink access customer number is identical; In the time that described uplink and downlink access customer number is not identical, judgement need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
Wherein, described configuration module, determines configurable code channel number specifically for the current power surplus according to described TS0, according to described configurable code channel number, on described TS0, increases DPCH.
Further, described configuration module, also, in the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stops increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function.
The present invention is according to the attribute of the HSPA carrier wave of TD-SCDMA, on the TS0 of HSPA carrier wave, carry out the dynamic-configuration of DPCH, expand the descending DPCH channel resource of HSPA carrier frequency, improve HSPA carrier capacity, and then can realize HSPA carrier frequency uplink and downlink code channel balance, promote HSPA carrier wave entirety access customer number ability, realize frequency spectrum resource utilization and maximize.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of HSPA carrier wave DPCH dispatching method of the present invention;
Fig. 2 is the realization flow schematic diagram of HSPA carrier wave DPCH dispatching method embodiment of the present invention;
Fig. 3 is the structural representation of HSPA carrier wave DPCH dispatching device of the present invention.
Embodiment
Along with the development of TD-SCDMA technology, there is multifrequency point technology in TD-SCDMA system, that is: multicarrier is combined, and shares same group of common channel resources, thereby form a multi-carrier district; Here, Yi Ge community can take multiple carrier resources, comprises a main carrier and at least one auxiliary carrier wave, and wherein, the TS0 of main carrier is still as downlink broadcast time slot, and the TS0 of auxiliary carrier wave is not used, and causes frequency spectrum resource waste.
Basic thought of the present invention is: according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judge whether the TS0 of described HSPA carrier wave needs to increase DPCH; In the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 shows the realization flow of HSPA carrier wave DPCH dispatching method of the present invention, and as shown in Figure 1, described method comprises the steps:
Particularly, in this step, first judge the attribute of described HSPA carrier wave, in the time that described HSPA carrier wave is main carrier, further judge that whether described HSPA carrier wave HSPA uplink and downlink access customer number identical, if not identical, judge need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH, otherwise, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH; Wherein, described uplink and downlink access user can divide the uplink and downlink access user of multiplexing function for carrier wave unlatching frame.
In the time that described HSPA carrier wave is auxiliary carrier wave, judge that whether described HSPA carrier wave is frequently same with the main carrier frequency of periphery adjacent area, when with frequency, because scrambler in TD-SCDMA is shorter, the co-channel interference impact of TS0 is larger, tend to affect terminal and measure generation without switching, therefore, now on the TS0 of described HSPA carrier wave, do not configure DPCH; When difference is frequently time, further judge that whether described HSPA carrier wave uplink and downlink access customer number identical, if not identical, judge need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH, otherwise, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH; Wherein, described uplink and downlink access user can divide the uplink and downlink access user of multiplexing function for carrier wave unlatching frame.
In this step, according to the maximum configurable code channel number of the maximum code channel power determination of described TS0, according to the configurable code channel number of described maximum, on described TS0, increase DPCH; Here, described maximum code channel power can calculate by following formula:
P＝10log(N*PCCPCH?POWER)；
Wherein, described P is maximum code channel power, and N is maximum configurable code channel number, and PCCPCH POWER is the power of Primary Common Control Physical Channel (Primary Common Control Physical Channel, PCCPCH); For example: if the maximum code channel power of the TS0 of the carrier wave of HPSA described in existing network is 45dBm, be that 33dBm calculates by PCCPCH POWER, when N=13, P=44.14, does not exceed gross power, and so, 13 are maximum configurable code channel number.In the time that TS0 has configured 9 DPCH, dynamically increase again at most only 4 DPCH.
Preferably, described method can also comprise: in the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stop increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function; Here, mobile communication system requires terminal when mobile, to keep the continuity of business, and terminal needs constantly to measure the PCCPCH power of peripheral cell in the time carrying out data service.
In the present invention, because the TS0 of HSUPA carrier wave has configured DPCH, terminal is measured to peripheral cell impact, therefore, can divide multiplexing function by DPCH being enabled to frame, within the repetition period of DPCH, user has nothing to do peripheral cell is measured, and guarantees business continuance while realizing fast mobile terminal; As twice frame divides while only accessing a user under state, 1/2 time of residue can be used for measuring neighboring BS information, switches action.
Fig. 2 shows the realization flow of HSPA carrier wave DPCH dispatching method embodiment of the present invention, and as shown in Figure 2, described embodiment comprises the steps:
Particularly, when described HSPA carrier wave is auxiliary carrier wave, can gather the main carrier frequency of the grand adjacent area of periphery, perform step 203 with own with frequently if do not find, otherwise execution step 204.
Wherein, owing to generally adopting A frequency range (2010～2025 MHz) frequency to be configured to main carrier frequency in current TD-SCDMA, F-band (1880～1920 MHz) frequency uses as capacity extensions, therefore conventionally HSPA carrier frequency preferentially can be configured in to non-main carrier frequency networking frequency: on F-band frequency.
Particularly, according to the maximum configurable code channel number of the maximum code channel power determination of the TS0 of known described HSPA, in conjunction with the code channel number having configured, determine the power headroom of described HSPA current TS 0 according to the configurable code channel number of described maximum.
Particularly, can increase the DPCH code channel resource of descending spreading factor 16.
Particularly, in order to meet the switching requirement of mobile terminal, the frame of opening HSPA carrier frequency divides multiplexing function, can realize user and measure if having time in business gap, guarantees normal business switching.
Here, divide at up twice frame, on the basis that descending four times of frames divide, by calculating the DPCH number of uplink and downlink, guarantee that uplink and downlink access customer number is consistent, realize up-downgoing code resources balance, and on original HSPA access user basis, increased by 2 × N user, here, described N is that frame divides multiple; In the time of HSPA user traffic access, system call 2 × N user is to the TS0 of the assistant carrier frequency of carrying HSPA.
Under normal circumstances, specifically can, by increasing descending four SF16 code resources at TS0 as DPCH, can realize up-downgoing code resources balance.
Fig. 3 shows the structure of HSPA carrier wave DPCH dispatching device of the present invention, and as shown in Figure 3, described device comprises: judge module and configuration module; Wherein,
Described judge module, for according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judges whether time slot 0 TS0 of described HSPA carrier wave needs to increase DPCH;
Described configuration module, in the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
Wherein, described judge module, specifically for when described HSPA carrier wave being main carrier and uplink and downlink access customer number when not identical, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH; Wherein, described uplink and downlink access user can divide the uplink and downlink access user of multiplexing function for carrier wave unlatching frame.
Wherein, described judge module, specifically in the time that described HSPA carrier wave is auxiliary carrier wave, judges that whether described HSPA carrier wave is frequently same with the main carrier of adjacent area, in the time of difference frequency, judges that whether uplink and downlink access customer number is identical; In the time that described uplink and downlink access customer number is not identical, judgement need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH; When with frequency, because scrambler in TD-SCDMA is shorter, the co-channel interference impact of TS0 is larger, tends to affect terminal and measures generation without switching, therefore, now on the TS0 of described HSPA carrier wave, does not configure DPCH; Wherein, described uplink and downlink access user can divide the uplink and downlink access user of multiplexing function for carrier wave unlatching frame.
Wherein, configuration module specifically for according to the maximum configurable code channel number of the maximum code channel power determination of described TS0, according to the configurable code channel number of described maximum, increases DPCH on described TS0; Here, described maximum code channel power can calculate by following formula:
P＝10log(N*PCCPCH?POWER)；
Wherein, described P is maximum code channel power, and N is maximum configurable code channel number, the power that PCCPCH POWER is PCCPCH; If the maximum code channel power of for example TS0 of the carrier wave of HPSA described in existing network is 45dBm, be that 33dBm calculates by PCCPCH POWER, when N=13, P=44.14, does not exceed gross power, and so, 13 are maximum configurable code channel number.In the time that TS0 has configured nine DPCH, dynamically increase again at most only four DPCH.
Further, described configuration module, also, in the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stops increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function; Here, mobile communication system requires terminal when mobile, to keep the continuity of business, and terminal needs constantly to measure the PCCPCH power of peripheral cell in the time carrying out data service.
In the present invention, because the TS0 of HSUPA carrier wave has configured DPCH, terminal is measured to peripheral cell impact, therefore can divide multiplexing function by DPCH being enabled to frame, within the repetition period of DPCH, user has nothing to do peripheral cell is measured, and guarantees business continuance while realizing fast mobile terminal; As twice frame divides while only accessing a user under state, 1/2 time of residue can be used for measuring neighboring BS information, switches action.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a high-speed packet access HSPA carrier-specific physical channel DPCH dispatching method, is characterized in that, described method comprises:
According to the attribute of described HSPA carrier wave and uplink and downlink number of users, judge whether the time slot 0TS0 of described HSPA carrier wave needs to increase DPCH;
In the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
2. method according to claim 1, is characterized in that, described according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judges whether the TS0 of described HSPA carrier wave needs the method that increases DPCH to be specially:
When described HSPA carrier wave is main carrier and uplink and downlink access customer number when not identical, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
3. method according to claim 1, is characterized in that, described according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judges whether the TS0 of described HSPA carrier wave needs the method that increases DPCH to be specially:
In the time that described HSPA carrier wave is auxiliary carrier wave, judge that whether described HSPA carrier wave is frequently same with the main carrier of adjacent area, in the time of difference frequency, judge that whether uplink and downlink access customer number is identical;
In the time that described uplink and downlink access customer number is not identical, need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
4. according to the method described in claims 1 to 3 any one, it is characterized in that, the described code channel power configuration DPCH according to described TS0 is:
Determine configurable code channel number according to the current power surplus of described TS0, according to described configurable code channel number, on described TS0, increase DPCH.
5. method according to claim 4, is characterized in that, described method also comprises:
In the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stop increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function.
6. a HSPA carrier wave DPCH dispatching device, is characterized in that, described device comprises: judge module and configuration module; Wherein,
Described judge module, for according to the attribute of described HSPA carrier wave and uplink and downlink number of users, judges whether the TS0 of described HSPA carrier wave needs to increase DPCH;
Described configuration module, in the time that needs increase DPCH, according to the code channel power configuration DPCH of described TS0.
7. device according to claim 6, is characterized in that, described judge module, specifically for when described HSPA carrier wave being main carrier and uplink and downlink access customer number when not identical, judgement need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
8. device according to claim 6, is characterized in that, described judge module, specifically in the time that described HSPA carrier wave is auxiliary carrier wave, judge that whether described HSPA carrier wave is frequently same with the main carrier of adjacent area, in the time of difference frequency, judge that whether uplink and downlink access customer number is identical; In the time that described uplink and downlink access customer number is not identical, judgement need to be on the TS0 of described HSPA carrier wave configurating downlink DPCH.
9. according to the device described in claim 6 to 8 any one, it is characterized in that, described configuration module, determines configurable code channel number specifically for the current power surplus according to described TS0, according to described configurable code channel number, on described TS0, increases DPCH.
10. device according to claim 9, is characterized in that, described configuration module also, in the time increasing after DPCH that the code channel power of TS0 exceedes described maximum code channel power, stops increasing DPCH, and the frame of opening the DPCH having increased divides multiplexing function.
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