WO2007025466A1

WO2007025466A1 - A method for distributing up link time frequency resource and a device thereof

Info

Publication number: WO2007025466A1
Application number: PCT/CN2006/002206
Authority: WO
Inventors: Rui Huang; Sha Ma; Bingyu Qu
Original assignee: Huawei Technologies Co., Ltd
Priority date: 2005-08-28
Filing date: 2006-08-28
Publication date: 2007-03-08
Also published as: CN1921360A

Abstract

A method for distributing up link time frequency resource, comprises: multiplexes user pilot symbols and data symbols in time multiplexing manner (401), and during the multiplexing process, distributes the frequency resource occupied by the user pilot symbols, enables that the frequency resource occupied by the user pilot symbols in the time resource is thinner than the frequency resource occupied by the corresponding data symbols in the same time resource (402). In the case of ensuring that the user frequency domain channel estimation performance and data transmission performance are not changed, the invention can multiplex the multi-users information using up link resource efficiently, thereby improves the resource use rate of the system. Furthermore, the invention can also ensure that the pilot and data of the up link user have better peak average proportion characteristic. There is a device for distributing up link time frequency resource in the invention.

Description

Method and device for allocating uplink time-frequency resources

TECHNICAL FIELD The present invention relates to wireless communication technologies, and more particularly to a method and apparatus for allocating uplink time-frequency resources.

Background technique

Since the 1990s, multi-carrier technology has become a hotspot technology for broadband wireless communication. The basic idea is to divide a wideband carrier into multiple subcarriers, and simultaneously transmit data on the multiple subcarriers. In most system applications, the width of the subcarriers is smaller than the coherence bandwidth of the channel, so that on the frequency selective channel, the fading on each subcarrier is flat fading, which is suitable for high speed data transmission.

Multi-carrier technology usually uses frequency domain channel estimation techniques and frequency domain equalization techniques. Some single-carrier systems can also perform frequency domain channel estimation and frequency domain equalization processing by performing Fourier Transform (FFT) at the receiving end.

Frequency domain channel estimation usually adopts coherent demodulation method based on auxiliary information. The channel estimation method based on auxiliary information is to set some known pilot symbols at certain fixed positions of the signal at the transmitting end, and use these pilots at the receiving end. The symbol is used for channel estimation.

As long as the interval of the pilot symbols in the time and frequency directions is sufficiently small relative to the channel correlation time and the channel coherence bandwidth, a better channel estimation effect can be obtained at the receiving end.

As shown in Figure 1, for the downlink, the pilot symbols include pilot symbols for the common pilot. The channel estimates required for coherent demodulation of user data are typically obtained by the base station transmitting common pilots to all users.

As shown in FIG. 2, for the uplink, since the channel environment of each user is different, the pilot symbols used by each user for channel estimation are dedicated follower pilots. In order to ensure the accuracy of the channel estimation, the overhead of the usual uplink dedicated pilot is relatively large.

At the same time, the overhead of uplink control signaling is also considered. For example, wireless communication systems typically utilize methods such as resource scheduling to improve overall system performance. These methods also increase the overhead of system resources. In a frequency reuse system, different users can be fixed in different children. With the band, as shown in Figure 3; along with the frequency and time of the wireless channel, the transmission resources of different users, including frequency resources and time resources, can be effectively arranged to obtain higher spectrum utilization efficiency and user satisfaction. In particular, for frequency scheduling therein, the base station is required to know the channel information of all frequency subbands of the user on the schedulable frequency band. For the uplink, each participating user is usually required to send training information on all subbands of the schedulable frequency band, so that the base station can learn the channel conditions of each frequency subband and perform scheduling. This training information requires a relatively large overhead.

In addition, some physical layer uplink signaling brought by downlink data transmission also increases system overhead, and is reasonably multiplexed with uplink data and pilots, for example, feedback information (ACK) required by downlink HARQ. In addition, in order to adapt to different moving speeds, the number of pilots inserted in the system is different, which can reduce the resource overhead of the system, and also needs to add some interactive signaling, which also needs to be reasonably complex with the uplink data and pilot. use.

On the other hand, the peak-to-average ratio of the transmit power in the uplink is also a problem that cannot be ignored. The existing single-carrier technique, by carrying the signal on the time domain waveform, makes the peak-to-average ratio of the transmit power relatively low. The pilot and data are generally time-division multiplexed (TDM). The frequency of each user data is divided into frequency division multiplexing (FDM) or time division multiplexing. As shown in Figure 2 and Figure 3, they are decentralized and centralized. The pilot layout of the user frequency reuse (taking 4 users as an example). In this pilot design approach, the pilot and data occupy the same frequency band and occupy all frequency resources within the frequency band.

Therefore, how to effectively use uplink resources for effective multiplexing of uplink channels and improve resource utilization of the entire system is a problem that must be solved at present.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and apparatus for allocating uplink time-frequency resources capable of effectively utilizing uplink time-frequency resources for multiplexing of uplink channels, improving system resource utilization, and ensuring channel estimation performance.

The technical solution adopted by the present invention to solve the technical problem is as follows: A method for allocating uplink time-frequency resources is provided, and the method includes:

The user pilot symbols and their data symbols are multiplexed in a time multiplexing manner, and in the multiplexing process, the frequency resources occupied by the user pilot symbols are allocated, so that the frequency resources occupied by the pilot symbols in their time resources are sparse The frequency resource occupied by the corresponding data symbol within its time resource. The rate resource allocation is used to transmit information of other users or control information of the user.

among them:

The pilot symbols described by the user terminal are spaced apart to occupy frequency subcarriers within the frequency resource occupied by the data symbols.

among them:

The pilot symbols transmitted according to the allocation method are obtained by processing the pilot sequences, thereby having a comb spectrum characteristic in the frequency domain, and a set of comb teeth is obtained.

among them:

For each pilot symbol corresponding to different user data symbols, the pilot symbols respectively formed by the respective pilot sequences of each user are formed on the frequency bands occupied by the different user data symbols, and the pilot symbols have respective combs. The spectral characteristics obtain a set of comb teeth of each user, and the frequency resources occupied by the data symbols are frequency resources of frequency bands occupied by respective data symbols of each user.

among them:

For each pilot symbol corresponding to different user data symbols, the pilot symbols respectively formed by the respective pilot sequences of each user are formed on the frequency bands occupied by the different user data symbols, and the pilot symbols have respective combs. a spectral characteristic, a set of comb teeth of each user is obtained, and the frequency resource occupied by the data symbol is a frequency resource of a frequency band occupied by each data symbol of each user;

The residual frequency resource of any one of the different users overlaps any of the extended comb teeth occupied by the entire system frequency band and the at least another user B pilot symbol of the different users.

among them:

Other control information of User B is transmitted on the remaining resources of User A.

among them:

The remaining frequency resources within the time resources of different user pilot symbols are allocated for transmitting information of the same other user.

The user data symbol is time-division multiplexed with at least two pilot symbols, so that all the guides The frequency symbols have the comb spectral characteristics described, or such that a portion of the pilot symbols have the comb spectral characteristics.

The specific implementation of the remaining frequency resource allocation for transmitting information of other users or control information of the user is:

The information of other users or the control information of the user equally occupy the frequency subcarriers within the remaining frequency resources.

The information of the other users or the control information of the user is inserted into the remaining frequency resources in such a manner that at least two transmitting/receiving data processing units are spaced apart.

The information of the other user includes information required by other users to measure the uplink channel condition.

The information required to measure the uplink channel condition required by the other user includes at least one of uplink frequency domain scheduling information, synchronization information, or adaptive pilot selection information.

The information used for uplink frequency domain scheduling includes at least one of subcarrier or subband measurement information for frequency domain scheduling and subcarrier feedback information for frequency domain scheduling.

The control information of the user includes at least one of user equipment measurement information, channel quality indication information, and downlink transmission related control information fed back by the user.

Where: the frequency subcarriers within the rate resource.

The present invention also provides an apparatus for allocating uplink time-frequency resources, the apparatus comprising at least a multiplexing and allocation module, the module is configured to:

The user pilot symbols and their data symbols are multiplexed in a time multiplexing manner, and in the multiplexing process, the frequency resources occupied by the user pilot symbols are allocated, so that the frequency resources occupied by the pilot symbols in their time resources are sparse The frequency resource occupied by the corresponding data symbol within its time resource.

The multiplexing and assigning module is configured to: cause the pilot symbols of the user terminal to be evenly spaced to occupy frequency subcarriers in the frequency resources occupied by the data symbols.

The multiplexing and allocation module is configured to: The pilot symbols transmitted according to the allocation method are obtained by processing the pilot sequences, thereby having a comb-like characteristic in the frequency domain, and obtaining a set of comb teeth.

The multiplexing and allocation module is configured to:

For each pilot symbol corresponding to different user data symbols, the pilot symbols respectively formed by the respective pilot sequences of each user are formed on the frequency bands occupied by the different user data symbols, and the pilot symbols have respective combs. Characterizing the characteristics, obtaining a set of comb teeth of each user, the frequency resource occupied by the data symbol is a frequency resource of a frequency band occupied by each user data symbol;

The residual frequency resource of any one of the different users overlaps any of the extensions of the entire system band with the combs of at least one other user B pilot symbol of the different users.

The device further includes a remaining resource allocation module, the module is configured to:

The remaining frequency resource allocation of the m source is used to transmit information of other users or control information of the user <

The remaining resource allocation module is configured to: input information of the same other user.

The remaining resource allocation module is configured to:

The information of other users or the control information of the user is equally spaced to occupy frequency subcarriers within the remaining frequency resources.

The remaining resource allocation module is configured to:

The information of the other user or the control information of the user is inserted into the remaining frequency resource in a manner of spacing at least two transmitting/receiving data processing units. The multiplexing and allocation module is configured to: frequency subcarriers in the frequency resource.

The method and device for allocating uplink time-frequency resources of the present invention can make the pilot occupy the frequency resource that is sparse than the data, and can effectively utilize the remaining frequency resources except the frequency resource occupied by the pilot symbol in the time resource of the pilot symbol. Transmitting the information of other users or the control information of the user, performing effective multiplexing of the pilot of the uplink channel and the user information, and more effectively utilizing the uplink resource while ensuring that the channel estimation performance and the data transmission performance of the user in the frequency domain are unchanged. Multi-user information reuse, thereby improving system resource utilization. In addition, it can ensure that the uplink user's pilot and data have better peak-to-average ratio characteristics.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a layout diagram of a common pilot on a downlink;

2 is a pilot arrangement diagram in a user mode frequency reuse in a distributed mode on the uplink; FIG. 3 is a pilot arrangement diagram in a user mode frequency multiplexing in a centralized mode on the uplink; FIG. 4 is an uplink time-frequency resource in the uplink mode of the present invention; Flow chart of the distribution method;

5 is a schematic diagram of forming a comb spectrum pilot according to an embodiment of the present invention;

6 is a schematic diagram of pilot time-frequency resource allocation in a centralized mode user frequency multiplexing according to an embodiment of the present invention;

FIG. 7 is a schematic diagram showing the comparison of the sparsity degree of the pilot and the channel estimation performance according to an embodiment of the present invention; FIG.

8 is a schematic diagram of multiple pilot time-frequency resource allocation according to the present invention;

9 is a schematic diagram of allocation of a sparse pilot of a user of the present invention that can be extended in frequency to other frequency bands;

FIG. 10 is a schematic diagram of an uplink time-frequency resource allocation apparatus according to an embodiment of the present invention.

Demodulation (Performance of Channel Estimation) The required time-division pilots occupy as little frequency resources as possible and can produce information. As shown in FIG. 4, in an embodiment of the present invention, the uplink time-frequency resource is implemented. The method includes the following steps:

Step 401: Determine to multiplex the user pilot symbols and their data symbols in a time multiplexing manner. In the embodiment of the present invention, it is determined that the multiplexing is implemented in the following manner: the user pilot symbol allocation is the same as the data symbol occupation. Band time resource;

Step 402: multiplex the user pilot symbols and their data symbols in a time multiplexing manner, and allocate frequency resources occupied by the pilot symbols in the multiplexing process, so that the allocated pilot symbols are in the

Step 403 is included to make full use of the above allocation results:

The information may also be used to transmit its own control information; for example, the remaining resources of the A user in the frequency band occupied by the user A may be used to transmit its own control information, and may also be used to transmit the B user's service information and control information.

Hereinafter, embodiments of the present invention will be described in detail in conjunction with more specific applications. Embodiment 1, in this embodiment, user data in the same TTI (transmission time interval) and a pilot symbol are time division multiplexed:

In this embodiment of the present invention, the data and pilot of a certain user are separately multiplexed in each TTI, and one pilot is inserted in each TTI, so that the pilot and the data have the same sampling rate, occupying the same frequency band, but in the Within this band, the pilot symbols occupy less frequency resources than the data symbols. This can be done by the following process:

The pilot of user i is included to include Q values), and a pilot symbol is formed, wherein each sample duration is Ts, and a pilot symbol of the user can be expressed as d (') = [d^ , dk , d ^Y (where T is the matrix transpose). The sample in the block is compressed so that it changes from the time length Ts to the chip duration Tc, and then the block is repeated J times, and the obtained pilot symbols are:

,Minute ,

Where L represents the number of repetitions of the block. The pilot symbols after the repeated processing can be further expressed. Shown as:

A set of comb-like spectral shapes, we call such a set of comb spectra as a set of comb teeth, as shown in Figure 5.

The comb-like frequency can have different frequency domain offsets in the frequency domain, and other sets of comb teeth are obtained, and the comb teeth of each group are staggered with each other, and the pilot can select any one of them. This can be done by: Selecting a specific set of phase vectors:

= exp{- · / · Φ(')} , l = Q, , QL—

Where ^ denotes the phase vector and Φ denotes the phase rotation factor.

The obtained phase vector is multiplied by the above-mentioned data symbols by elements, and finally the pilot symbol of the user i is obtained as follows: To ensure channel estimation performance, the minimum interval between the pilot symbol combs is smaller than the channel. Coherent bandwidth. In the time domain, the density and spacing of the inserted pilots are not changed, but in the frequency domain, each pilot can be formed into a comb spectrum, as shown in Figures 5 and 6, thus making the pilot symbols at their time. The frequency resources occupied by the resources are less than the frequency resources occupied by the corresponding data symbols in their time resources, and the remaining frequency resources are formed between the pilot symbols ^ ₁ teeth.

In this embodiment, the pilot symbols are evenly spaced to occupy frequency subcarriers within their frequency resources. Through the implementation of the above-mentioned ^ spectrum, by changing the number of repetitions 1 ≥ 2, the pilot occupies the frequency resource as 1/ of the resources in the frequency band. For example, when L = 2, the pilot symbols occupy only the subcarriers with the even or odd number in the above frequency resources. Of course, it is also possible to use a pattern in which the pilot symbols are non-uniformly spaced to occupy frequency subcarriers within their frequency resources.

At this time, the information to be transmitted by other users may occupy the remaining frequency resources between the combs of the current user pilot symbols, and are frequency-multiplexed with the pilot of the user to be transmitted. When other user information is inserted, the user information may be inserted into the remaining frequency resource at intervals, or may be inserted unevenly. The method of uniform insertion can still adopt the above-described method of forming a comb spectrum, except that a comb spectrum frequency domain offset different from the user pilot is used. In addition, information of other users may be inserted into the remaining frequency resources at intervals of a plurality of transmission/reception data processing units as long as the requirements for transmitting user information can be satisfied. Information about these other users includes but is not limited to other users The required information for measuring the uplink channel condition includes, but is not limited to, uplink frequency domain scheduling information, synchronization information, and adaptive pilot selection information. The information used for uplink frequency domain scheduling may include subcarrier or subband measurement information for frequency domain scheduling, subcarrier feedback information for frequency domain scheduling, and the like.

In addition, some of the user's own uplink control information may also be transmitted on the remaining frequency resources between the pilot symbol combs. The control information of these users includes, but is not limited to, downlink transmission related control information fed back by the user, and the control information may be confirmation information related to the downlink hybrid retransmission request. In addition, the user control information may also be user equipment measurement information, channel quality indicator information (CQI), and the like.

In addition to the above manner, in the present invention, the pilot symbols can be formed into a comb spectrum characteristic in the frequency domain by a method in the frequency domain, and the specific steps include:

Multiple pilot values form a pilot sequence;

Performing FFT conversion of the pilot sequence on the M-point of the time-frequency;

The sequence in the frequency domain is mapped to the N-point subcarrier, where (N is greater than M;) the frequency domain sequence of the N point is subjected to frequency-time IFFT conversion, and the pilot symbol is transmitted in the time domain. At the receiving end, the received signal is first demultiplexed to obtain data and pilots of the same user. Since the minimum spacing between the two pilot symbols in the frequency domain is smaller than the coherence bandwidth of the channel, the channel response at other locations can be obtained by interpolation. Therefore, after demultiplexing the pilot, the channel parameters of the current subcarrier of the pilot symbol can be estimated first, and then the channel parameters of all subcarriers where the data is located are estimated by interpolation. At the same time, other information of the multiplexing is recovered by separating the pilot comb spectrum.

If the user's control information is multiplexed, the information can be demodulated with a pilot that is frequency-multiplexed with it, or demodulated by other non-coherent demodulation methods.

If the information of other users is multiplexed, the information usually does not need to be demodulated (for example, information for channel condition measurement) or may be demodulated by other non-coherent demodulation methods.

This embodiment of the present invention reduces the resources occupied by the pilots in the case of sufficiently guaranteeing the channel estimation performance. Taking the system in 3GPP TS25.814 as an example, several cases in which the pilot symbols occupy 1, 2, 1/4, 1/8 of the total frequency band resources in the frequency domain are compared. The comparison result is shown in Fig. 7. As shown, when the interval between two pilot symbols is smaller than the channel coherence bandwidth in the frequency domain (the first three cases), the channel response performance of other subcarriers estimated by interpolation is very small. At the same time, the above-mentioned interleaving pilots in the frequency domain can also ensure that the pilot and data of the user have better peak-to-average ratio characteristics. The equidistant interleaving of other users' information on the remaining frequency domain resources can also ensure better peak-to-average ratio characteristics of other users. For the way to reuse the user's own other control information on the pilot residual frequency resource, other measures can be taken at the same time to ensure that the peak average is relatively small.

Embodiment 2 In this embodiment, user data and multiple pilot symbols in the same TTI are time-multiplexed:

When the user data and the plurality of pilot symbols in the same TTI are time-division multiplexed, the channel estimation performance guarantees in some special application scenarios, in addition to the manners described in Embodiment 1, corresponding to different user data symbols. The pilot symbols respectively form the respective comb-like words on the frequency bands occupied by the different user data symbols, and may perform the above operations only on some of the pilot symbols, and the other pilot symbols occupy the entire time resource. Frequency resource. In this way, on average, the frequency resource occupied by the pilot is still sparse than the frequency resource occupied by the data, and the remaining frequency resources formed between the pilot symbols of the pilot portion can be used to transmit information of other users or control information of the user. . For example, as shown in Fig. 8, a pilot is inserted in the head and tail of the TTI, respectively, in which the pilot of the head forms a comb spectrum. This situation can be used when the channel environment is poor and the coherence bandwidth of the frequency is relatively small. Of course, for each pilot symbol, the embodiment may also be adopted.

The manner described in 1 generates a comb-like transmission, thereby forming the remaining resources without affecting the implementation of the present invention.

In the case that the uplink multiple user data is frequency-division multiplexed by frequency band, the above method may also be adopted, so that the comb spectrum pilots formed by the respective pilot symbols of the plurality of users on their respective frequency resources (bands) are in time. Up-aligned, the remaining frequency resources formed between the respective pilot symbol combs of these users can be used to transmit respective control information or information of other different users, or can be uniformly configured to transmit information of the same other user. In addition, the bandwidth of the frequency band occupied by the plurality of users may be the same or different.

Embodiment 3: In the above-mentioned embodiments, the pilot symbols corresponding to different user data symbols are respectively formed, and respective comb spectra are respectively formed on frequency bands occupied by different user data symbols, in the third embodiment. A pilot comb spectrum is formed for a pilot symbol corresponding to a user data symbol, the comb spectrum extending in frequency to other frequency bands. The principle of the extension is: in the process of forming the comb spectrum, the remaining resources of one user A of different users occupy the comb symbol of at least another user B in the entire system frequency band and different users. Occupy The ^^ tooth coincides, so that the remaining resources of the user A itself can be used to transmit the control information of the user B. Based on the above characteristics, it can be considered that the comb of the user B extends to other frequency bands.

For example, the example of Figure 8 can be extended to the situation shown in Figure 9, where the user's sparse pilots can be extended in frequency to other frequency bands for channel measurements in other frequency bands. At this time, the resources of other frequency bands occupied are the remaining frequency resources released by the pilot time of other users. This extension can be achieved by a uniform spectrum of longer block lengths. Specifically, at least two pilots are inserted at different time positions in the TTI, where one pilot forms a spectrum on the entire frequency band (including subbands of other users), and other pilots occupy the user data. Frequency resources within the occupied subband. In Figure 9, a pilot is inserted in the head and tail of the TTI, wherein the pilot of the header forms a wider comb spectrum, and the frequency component of the same frequency band of the data portion performs channel estimation of the data block, and the data portion has a different frequency band. The frequency resource performs channel quality measurement on the corresponding frequency band.

In this embodiment, it is of course possible to generate an extended comb spectrum for the respective pilot symbols in the manner described in this embodiment, thereby forming a remaining resource; or, other partial or all pilots may also be used. The comb language is generated in the same manner as in Embodiment 1 and/or Embodiment 2, thereby generating the remaining frequency resources without affecting the implementation of the present invention.

Furthermore, whether or not the pilots other than the comb-like words occupy the frequency resources within the sub-band occupied by the user data does not affect the implementation of the present invention.

More generally, for the case of user data in the same TTI and one pilot symbol time division multiplexing, the example of FIG. 6 can be extended to a similar situation as shown in FIG. 9, that is, user data in the same TTI. When a pilot symbol is time-division multiplexed, the extended comb spectrum can also be generated in the above manner, thereby implementing an embodiment of the present invention.

In addition, for the method for time-frequency resource allocation described above, a plurality of different user information in step 403 is implemented, and the information and the pilot in step 402 of the other user itself are implemented by a unified comb spectrum.

Corresponding to the foregoing method, an embodiment of the present invention further provides an apparatus for allocating uplink time-frequency resources. Referring to FIG. 10, the apparatus includes at least a multiplexing and allocation module, and the module is configured to implement the foregoing method. And frequency resource allocation function, such that the frequency resources occupied by the pilot symbols in their time resources are neglected by the frequency resources occupied by the corresponding data symbols in their time resources. Source. Since the multiplexing and allocation functions implemented by the module are consistent with the multiplexing and allocation methods described in the above methods, the description will not be repeated here.

Referring to FIG. 10, in a preferred embodiment of the present invention, the apparatus for allocating an uplink time-frequency resource further includes a remaining resource allocation module, where the module is implemented to: use a frequency resource occupied by a pilot symbol in a time resource of a pilot symbol. The remaining residual frequency resource allocation is used to transmit information of other users or control information of the user. The remaining resource allocation function implemented by the module is consistent with the allocation method of the remaining resources already introduced in the above method. To save space, it will not be described in detail here.

The method for allocating uplink time-frequency resources of the present invention causes the pilot to occupy a frequency resource that is sparse than the data portion, implements a sparse resource distribution of the pilot in the frequency domain, and uses the time symbol of the pilot symbol to guide the information. The present invention is applicable to any system in which system resources can be time-multiplexed and frequency-multiplexed.

Claims

Advantage

A method for allocating uplink time-frequency resources, the method comprising: multiplexing a user pilot symbol and a data symbol thereof by using a time multiplexing manner, and assigning a user pilot symbol in the multiplexing process The occupied frequency resource is such that the frequency resource occupied by the pilot symbol in its time resource is neglected by the frequency resource occupied by the corresponding data symbol in its time resource.

2. Method according to claim 1, characterized in that the time resource of the pilot symbol or the control information of the user.

3. The method of claim 1 wherein: frequency subcarriers within the resource.

4. The method of claim 3, wherein:

5. The method of claim 4, wherein:

6. The method of claim 4, wherein

The residual frequency resource of any one of the different users overlaps any of the extended comb teeth occupied by the entire system frequency band and at least another user B pilot symbol of the different users.

7. The method of claim 6 wherein:

8. Method according to claim 2 or 5, characterized in that the same information of another user.

The method according to any one of claims 3 to 6, wherein the user data symbol is time-division multiplexed with at least two pilot symbols, such that all pilot symbols have the adverbial characteristic, or Partial pilot symbols are made to have the comb spectral characteristics.

The method according to claim 2, wherein the remaining frequency resource allocation is used to transmit information of other users or control information of the user is:

12. The method according to claim 2, wherein the information of the other user includes information required by other users to measure an uplink channel condition.

The allocation method according to claim 10, wherein the information required by the other user to measure the uplink channel condition includes uplink frequency domain scheduling information, synchronization information, or adaptive pilot selection information. At least one.

The allocation method according to claim 13, wherein the information for uplink frequency domain scheduling includes at least subcarrier or subband measurement information for frequency domain scheduling, and subcarriers for frequency domain scheduling. One of the feedback messages.

The allocation method according to claim 2, wherein the control information of the user includes at least one of user equipment measurement information, channel quality indication information, and downlink transmission related control information fed back by the user.

16. The method of claim 1 wherein: Rate subcarriers within the resource.

17. An apparatus for allocating uplink time-frequency resources, characterized in that the apparatus comprises at least a multiplexing and allocation module, the module is configured to:

18. The apparatus according to claim 17, wherein the frequency subcarriers in the frequency resource of the multiplexing and allocation module.

19. The apparatus according to claim 17, wherein the multiplexing and assigning module is configured to:

20. The apparatus of claim 19, wherein the multiplexing and assigning module is configured to:

21. The apparatus according to claim 19, wherein the multiplexing and assigning module is configured to:

Wherein, the residual frequency resource of any one of the different users is the comb of any one of the extended comb teeth occupied by the entire system frequency band and at least another user B pilot symbol of the different users. The teeth coincide.

22. The apparatus according to claim 17, wherein the apparatus further comprises a remaining resource allocation module, the module is configured to:

The remaining frequency resources other than the frequency resources occupied by the pilot symbols in the time resources of the pilot symbols are allocated for transmitting information of other users or control information of the user.

The apparatus according to claim 22, wherein the remaining resource allocation module is configured to: input information of another user.

24. The apparatus according to claim 22, wherein the remaining resource allocation module is used to:

The information of other users or the control information of the user are intermittently occupied by frequency subcarriers in the remaining frequency resources.

25. The apparatus according to claim 22, wherein the remaining resource allocation module is used to:

The information of the other user or the control information of the user is inserted into the remaining frequency resource in a manner of spacing at least two transmission/reception data processing units.

26. The apparatus according to claim 17, wherein the multiplexing and assigning module is configured to:

Page symbol The frequency subcarrier within the frequency resource occupied by the L data symbol.