CN100579000C - Multiplexing method for time-frequency resource in radio communication system - Google Patents
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Abstract
The invention discloses a time and frequency resource multipurpose method of wireless communication system, which comprises the following steps: A. distributing time and frequency pattern group for deme of wireless communication system in each transmission time deme TTI; B. dividing dispatching band on the subcarrier of time frequency plane in the deme; dividing dispatching band for each user or channel in the deme; C. dividing the selected time frequency pattern in the time frequency pattern group to each user or channel in the deme without intersection. The invention can realize diversity gain, which improves transmission quality of time frequency pattern transmission data.
Description
Technical Field
The present invention relates to a technique for allocating time-frequency resources in a wireless communication system, and more particularly, to a method for multiplexing time-frequency resources in a wireless communication system using a frequency hopping Orthogonal Frequency Division Multiplexing (OFDM) technique.
Background
Since the 90 s of the 20 th century, multicarrier techniques based on OFDM have been developed in wireless communication systems. The OFDM technology divides time-frequency resources of a wireless communication system into a plurality of orthogonal narrow-band sub-channels in a frequency domain, and high-speed data streams are transmitted in parallel on each sub-channel through serial-parallel conversion. Due to the narrow-band characteristic of the sub-channels, the influence of multipath can be overcome, and the orthogonality among the sub-channels is kept, so that the interference among users in a cell is ensured to be small.
Frequency hopping techniques may also be introduced in OFDM-based wireless communication systems, i.e., the subcarrier frequency used by each user is selected according to a pre-set time-frequency pattern in each Transmission Time Interval (TTI), allowing each user to transmit data using a different time-frequency pattern. Thus, the OFDM-based wireless communication system is actually updated to a wireless communication system using the frequency hopping OFDM technique.
In a wireless communication system based on a frequency hopping OFDM technique, disjoint subcarrier sets are allocated to different users in the same cell, i.e., different time-frequency patterns are allocated, and the time-frequency pattern patterns of different users are usually designed as follows: the time frequency patterns of different users in the same cell are ensured to be orthogonal, and the interference of each user in the current cell to the adjacent co-frequency cells is ensured to be basically the same, namely the interference is averaged. Therefore, different users transmit data by adopting different time frequency patterns, so that the wireless communication system based on the frequency hopping OFDM technology can not generate inter-cell interference under the condition of proper frequency and timing synchronization. In addition, the frequency hopping OFDM technique also produces effects of frequency diversity and inter-cell interference averaging.
Currently, the way to implement the allocation of time-frequency resources in a wireless communication system based on the frequency hopping OFDM technology is: first, an entire frequency band in a wireless communication system is divided into a plurality of frequency units and represented in frequency subbands, each of which may contain one or more subcarriers; secondly, in each TTI, frequency hopping is carried out in a frequency domain by taking a frequency sub-band as a unit and in a time domain by taking an OFDM symbol as a unit, a time-frequency pattern is generated through a Costas sequence or other sequences, and different time-frequency patterns can be obtained based on different time offsets and frequency offsets; finally, inside a cell of the wireless communication system, a group of time-frequency pattern groups is formed based on all cyclic frequency (or time domain) shifts of the Costas sequence or other sequences, the time-frequency patterns of the group are all orthogonal, and the group of time-frequency patterns is allocated to users inside the cell for transmitting data. Similarly, in different cells of the wireless communication system, a group of time-frequency pattern groups is formed based on all cyclic time domain (or frequency) shifts of the Costas sequence or other sequences, and the group of time-frequency patterns is respectively allocated to different cells. The expression is that in a time frequency plane, a plurality of time frequency patterns subjected to cyclic shift occupy the whole time frequency plane in one TTI, no intersection point exists between the time frequency patterns in one cell, and the time frequency patterns of any two different cells have few intersection points. In this way, it is ensured that different users in different cells in a wireless communication system do not generate interference and that interference between cells is averaged when transmitting data with disjoint time-frequency patterns.
The detailed description process of the above scheme can be found in chinese patent application with application date of 2004, 7/27/7, application number of CN200410054667.6, entitled "a method for allocating time-frequency resources in a communication system".
According to the scheme, the time-frequency patterns adopted by different users in the wireless communication system for receiving and transmitting data are all the time-frequency patterns in the time-frequency pattern group generated by various sequences in a pseudo-random mode along with time or frequency change, the time-frequency pattern units in the time-frequency patterns can be positioned on any subcarrier on a time-frequency plane, the time-frequency pattern units in a scheduling frequency band are not distributed according to the requirements of the users for transmitting data, and therefore the grading gain of multi-user time-frequency resource distribution in the wireless communication system cannot be achieved.
At present, in order to achieve a hierarchical gain of time-frequency resource allocation for multiple users in a wireless communication system, in the wireless communication system, after a time-frequency pattern group is generated by adopting a pseudo-random manner along with time or frequency change according to the requirements of each user, a time-frequency pattern unit in a scheduling frequency band is selected from the generated time-frequency pattern group to transmit data.
However, in this TTI, the selection of the scheduling frequency band is determined according to the channel information fed back by the channel estimation of the previous TTI or several TTIs, that is, the sub-carrier with good transmission quality in the previous TTI or several TTIs is selected as the scheduling frequency band, for the user with fast moving speed, the sub-carrier with good transmission quality in the previous TT1 is not necessarily good in the transmission quality of this TTI, which may cause the user with fast moving speed to use the time-frequency pattern unit in the scheduling frequency band to transmit data in the transmission quality of this TTI to be degraded.
Therefore, how to ensure multi-user classification of users with slow moving speed and realize diversity gain when allocating time-frequency resources to each user in a wireless communication system, and how to ensure that transmission quality of users with fast moving speed of the wireless communication system cannot be reduced when transmitting data by using allocated time-frequency patterns, that is, how to realize multi-user multiplexing of allocating time-frequency resources in the wireless communication system, becomes a problem to be solved urgently.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method for multiplexing time-frequency resources in a wireless communication system, which can ensure multi-user classification of users with slow moving speed, achieve diversity gain, and ensure that transmission quality of users with fast moving speed in the wireless communication system will not be reduced when they use allocated time-frequency patterns to transmit data, thereby achieving multi-user multiplexing of time-frequency resources in the wireless communication system.
According to the above purpose, the technical scheme of the invention is realized as follows:
a multiplexing method of time-frequency resources in a wireless communication system, the method comprising:
A. allocating a set of frequency patterns for cells in the wireless communication system in each transmission time interval, TTI;
B. dividing sub-carriers on a time-frequency plane in the cell into scheduling frequency bands, and allocating the divided scheduling frequency bands to each user or channel of the cell;
C. and selecting time frequency patterns from the time frequency pattern group to be distributed to each user or channel of the cell, wherein each user or channel adopts the time frequency pattern units of the distributed time frequency patterns in the distributed scheduling frequency band to transmit data, and the time frequency pattern units adopted by each user or channel do not have intersection points.
Wherein a user in the cell is assigned an EPallAnd a certain appropriate SBSubset kWhile another user in the cell is assigned a SBallAnd a suitable FPSubset jThe intersection of (B), the SBSubset kRepresenting the scheduling frequency band occupied by the user, the subset k being a subset of the set {1, 2., N }, the entire frequency band on the time-frequency plane being divided into N scheduling frequency bands, the FPSubset jRepresenting the time frequency pattern distributed by the user, wherein the subset j is the subset of a set {1, 2., M }, wherein M is the number of the time frequency patterns occupying the whole time frequency plane, and FPallThe time frequency pattern occupied by the user is the time frequency pattern occupying the whole time frequency plane, and the SBallThe scheduling frequency band occupied by the user is the whole frequency band on the time frequency plane.
When the user moving speed in the cell is high, the scheduling frequency band allocated to the user in the step B is the whole frequency band on the time-frequency plane in the cell;
and when the moving speed of the user in the cell is low, the scheduling frequency band allocated to the user in the step B is a scheduling frequency band with good transmission quality fed back by the channel estimation of the previous TTI or TTIs.
The user with high moving speed is that the moving speed is equal to or more than 120 km/h; the user with slow moving speed is the user with the moving speed less than 120 km/h.
And B, allocating one or more than one divided scheduling frequency bands to each user or channel of the cell.
The time frequency pattern distributed to each user or channel in step C is one or more according to the transmission rate of the data to be transmitted.
When the time-frequency patterns allocated to the respective users or channels in step C are the same,
the divided scheduling frequency bands allocated to the users or the channels are different.
When the time-frequency patterns allocated to the respective users or channels in step C are not the same,
the scheduling frequency bands divided by the user or channel allocation are the same.
The time-frequency pattern group in the step A is formed by the cyclic shift of a Costas sequence, a Latin sequence or a linear hyperbolic sequence through a frequency domain or a time domain; or a plurality of time frequency patterns which have no intersection point and occupy the whole time frequency plane.
It can be seen from the above-mentioned solution that the method provided by the present invention generates time-frequency pattern groups for all users in a cell, when each user in the cell transmits data, the wireless communication system allocates time-frequency patterns to different users from the time-frequency pattern groups, and different users transmit data using the time-frequency pattern units of their allocated time-frequency patterns in their allocated scheduling frequency bands. Furthermore, the invention can also allocate time-frequency pattern units to the channels in the cell for transmitting data. Because the user of the invention adopts the time-frequency pattern unit in the allocated scheduling frequency band to transmit data, different scheduling frequency bands can be allocated to meet different user requirements, for example, the scheduling frequency band allocated to the user with high moving speed is the best whole frequency band of the frequency-frequency plane as many as possible, and the scheduling frequency band allocated to the user with low moving speed is the scheduling frequency band with good transmission quality, so that the method not only ensures the multi-user classification of the user with low moving speed, realizes diversity gain, but also ensures that the transmission quality of the user with high moving speed of the wireless communication system can not be reduced when the user uses the allocated time-frequency pattern to transmit data, and finally realizes the multi-user multiplexing of the time-frequency resource allocated in the wireless communication system.
Drawings
FIG. 1 is a flow chart of a method for multiplexing time-frequency resources in a wireless communication system according to the present invention;
FIG. 2 is a schematic diagram of a time-frequency pattern assigned to FP1 according to an embodiment of the present invention;
fig. 3 is a schematic diagram of time-frequency patterns allocated to user k, user a, and user b in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
In a wireless communication system, the invention allocates different types of time-frequency patterns for users with different requirements: for a user with high moving speed, the allocated time-frequency pattern is one or more time-frequency patterns in the time-frequency pattern group in the cell generated according to the prior art; for users with low moving speed, the allocated time-frequency pattern is the time-frequency pattern unit in the scheduling frequency band in the time-frequency pattern group in the local cell generated according to the prior art. Therefore, the multi-user classification of users with low moving speed can be ensured, the diversity gain is realized, the transmission quality of multi-users with high moving speed of the wireless communication system can be ensured not to be reduced when the distributed time-frequency patterns are used for transmitting data, and the multi-user multiplexing of time-frequency resources in the wireless communication system is realized.
The method provided by the invention determines the time-frequency pattern selected by the user in the cell of the wireless communication system by the following two parameters, wherein one parameter is a preset scheduling frequency band, and the other parameter is a time-frequency pattern group in the cell generated according to the prior art.
Fig. 1 is a flow chart of a method for multiplexing time-frequency resources in a wireless communication system, which specifically comprises the following steps:
The time-frequency patterns in the time-frequency pattern group can be obtained by cyclic shift of time or frequency of sequences, and the sequences can be Costas sequences, Latin sequences or linear hyperbolic sequences. The generated time-frequency pattern group occupies the whole time-frequency plane.
The division scheduling frequency band is divided according to the user requirement in the cell, and the coherent bandwidth of the channel environment in the TTI can also be referred to.
Users in the cell may allocate one or more divided scheduling frequency bands as needed.
The method for allocating the scheduling frequency band comprises the following steps: if the user is a user with high moving speed, the allocated scheduling frequency band is the best whole frequency band of the frequency band on the time-frequency plane as much as possible, namely all the divided scheduling frequency bands are allocated to the user as much as possible; if the user is a user with low moving speed, the set scheduling frequency band is a scheduling frequency band with good transmission quality fed back by the channel estimation of the user in the last one or several TT1, that is, the divided scheduling frequency band with good transmission quality is allocated to the user.
The time frequency patterns allocated to different users by the invention can be the same, but the scheduling frequency bands set by the users must be different, thereby ensuring that different users do not use the same time frequency pattern unit to transmit data.
Of course, the time-frequency pattern allocated to a user may be one or more than one time-frequency pattern in the time-frequency pattern group according to the rate of data transmission by the user, for example, when the rate of data transmission by the user is two OFDM symbols transmitted in one TTI, two time-frequency patterns may be allocated. Therefore, the time frequency pattern units adopted by the user in the set scheduling frequency band can be increased, and the data transmission rate is increased.
The specific implementation method comprises the following steps:
first, according to the prior art, a group of time-frequency patterns assigned to the local cell is generated.
Set in the local cell, the time frequency pattern group based on all time or frequency cyclic shift of the sequence is FPiAnd if i is the number of different sequences, i belongs to {1, 2., M }, and M is the number of sequences occupying the whole time-frequency plane. If a certain user occupies oneSeveral or several time-frequency patterns, possibly using FPSubset kSubset of
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To indicate. One time-frequency pattern may also be allocated to multiple users in the cell.
Of course, the time-frequency pattern group of the cell may also be generated not by all time or frequency cyclic shifts of the sequence, but by a plurality of unrelated time-frequency patterns, but it is ensured that the unrelated time-frequency patterns have no intersection, and the generated time-frequency pattern group may occupy the whole time-frequency plane.
Next, a scheduling band used by the user in the own cell is set.
The entire frequency band on the time-frequency plane is divided into a number of frequency units and represented in frequency sub-bands. Each frequency sub-band may contain one or several sub-carriers, which constitute a scheduling band SBjIndicating that j represents the selected scheduling band number, and j ∈ {1, 2.., N } assuming that the entire band is divided into N scheduling bands. SB can be used if a user occupies one or several scheduling bandsSubset kSubset of
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To indicate. One scheduling band may also be allocated to multiple users.
Of course, the scheduling frequency band may also be the whole frequency band on the time-frequency plane, and in this case, in this cell, all the time-frequency resources in one TTI may be denoted as TFallI.e. TFall＝FPall＝SBall。
And finally, allocating time-frequency resources to the users in the cell.
When allocating time frequency resource to one user k in the cell, the time frequency resource TF allocated to the userkIs SBSubset kAnd FPSubset kThe intersection of, i.e. TFk＝SBSubset k∩FPSubset k。
In addition, TFkCan also be expressed as
Wherein j belongs to {1, 2.,. N }, i belongs to {1, 2.,. M }, i selects several pairs of FPiAnd SBjThe several pairs of FPs are then combinediAnd SBjThe intersection of (2) is merged to obtain TFk. This has the advantage that the selected time-frequency resources TF are selectedkMay be represented by one or more coordinates (i, j).
All users in the current TTI in the current cell can be allocated according to the allocation mode of the time frequency resource, but it must be ensured that the time frequency patterns selected by each user do not have an intersection, i.e. the intersection of the time frequency pattern selected by a certain user a and the time frequency pattern selected by a certain user b is empty, and TF is useda∩TFbΦ, where a ≠ b, Φ denotes null.
In order that the time frequency patterns selected by each user in the TTI in the cell have no intersection, the invention allocates time frequency resources TF to the userss，TFsMust satisfy TFs∈TFallocatedIn which TFallocatedTime frequency resource, TF, which represents the time frequency resource allocated to other users in the local cellallocatedIs at TFallMiddle TFallocatedThe complement of (c).
All allocable time frequency resources in the current TTI in the current cell can be selected from
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Where Ψ represents the set of all users that need to be allocated within the cell.
At this time, one of the users in the cell is allocated with FPallAnd a certain appropriate SBSubset kWhile the intersection of the two sets of time-frequency patterns is obtained, the SB is also allocated to another user in the cellallAnd a suitable FPSubset kThe time-frequency pattern obtained by the intersection.
Therefore, the method provided by the invention can allocate the time-frequency resource flexibly, namely when the time-frequency resource SB of one userSubset kHaving been determined, for another user, the divide SB can be selectedSubset kAny one of the time-frequency patterns of (a); or when the time frequency resource FP of a userSubset kHaving been determined, a divide FP may be selected for another userSubset kAnd any time unit in a scheduling frequency band with better channel quality, namely an OFDM symbol.
When allocating time-frequency resources to users in the cell according to the method in the TTI, the scheduling frequency band selected by the user with high moving speed can be the best whole frequency band as much as possible on the time-frequency plane, so that one or more time-frequency patterns in the best whole frequency band as much as possible on the time-frequency plane are selected from the time-frequency pattern group generated by the cell in the TTI for data transmission; the scheduling frequency band of the user with low moving speed can be determined according to the channel information fed back by the channel estimation of the previous TTI or TTIs, that is, the sub-carrier with good transmission quality is determined as the scheduling frequency band, so that one or more time-frequency patterns in the scheduling frequency band are selected from the time-frequency pattern group generated by the local cell in the TTI to transmit data. However, it must be ensured that, within the same TTI, there is no intersection between the time-frequency patterns selected by different users in the cell.
The user with high moving speed can be the user with the speed per hour equal to or more than 120 kilometers per hour, and the user with low moving speed can be the user with the speed per hour less than 120 kilometers per hour.
Of course, one or more time-frequency patterns may also be selected from the time-frequency pattern group generated by the local cell in the TTI according to the above method to be allocated to the channel of the local cell for data transmission.
In the following, the present invention is described with reference to a specific embodiment, where N is 17 subbands and M is 17 OFDM symbols per TTI.
In the cell, it is assumed that when a user k moves at a high speed, the requirement for transmitting data by the user k must be satisfied by frequency diversity of a scheduling frequency band, and in addition, two users a and b with lower moving speeds exist, and the required data transmission rates are the same and are two OFDM symbols in each TTI.
For a user k, the set scheduling frequency band is the whole frequency band of the time-frequency plane; for a user a and a user b, in the last one or several TTIs, the channel quality fed back by the user a through channel estimation on 1-8 frequency subbands is better, and the channel quality fed back by the user b through channel estimation on 9-17 frequency subbands is better, so that the scheduling frequency band set for the user a by the wireless communication system is 1-8 frequency subbands, and the scheduling frequency band set for the user b is 9-17 frequency subbands.
Suppose that a time-frequency pattern generated based on a Costas sequence in this cell is: and L is {3, 9, 10, 13, 5, 15, 11, 16, 14, 8, 7, 4, 12, 2, 6, 1, 17}, and the time-frequency pattern is subjected to all time cycle shifts to form a time-frequency pattern group of the cell, which is denoted as FPiI is the number of the different sequences, i ═ 1, 2,., 17, in which case FP is then formed1L is {3, 9, 10, 13, 5, 15, 11, 16, 14, 8, 7, 4, 12, 2, 6, 1, 17}, as shown in fig. 2.
For user a and user b, the 17 frequency sub-bands in the whole band are divided into two scheduling bands in SBjWhere j represents the selected scheduling band number, and j ═ 1, 2.
In this case, for user k, the scheduling bandwidth is equivalent to the bandwidth of the whole time-frequency plane, and in this case, TF is usedk＝SBSubset k∩FPSubset kCan be equal to FP1I.e. FP can be selected1As a time-frequency pattern for user k. For user a and user b, the allocated time frequency pattern is TF respectivelya＝SBSubset a∩FPSubset aAnd TFb＝SBSubset b∩FPSubset b。
As shown in FIG. 3, the time-frequency pattern FP will be represented at ■1Assigned to user k, the frequency band SB will be scheduled since the data transmission rate required by user a and user b is two OFDM symbols per TTI1To Chinese
And
FP of the representation2And FP3Allocating to a scheduling user a to schedule a frequency band SB2To Chinese
And
FP of the representation2And FP3To the scheduling user b. Wherein,
FP of the representation2Is through FP1A time-frequency pattern obtained by performing a time shift,
represents FP3Is through FP1And performing two time shifts to obtain a time-frequency pattern.
When the data transmission rates required by the user a and the user b are different, different time-frequency patterns in the time-frequency pattern group of the cell can be allocated to the user a and the user b, so that the user a and the user b respectively select the time-frequency pattern units of the allocated time-frequency patterns in the set scheduling frequency band to transmit data. Similarly, the scheduling frequency bands set by the user a and the user b may be different.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for multiplexing time-frequency resources in a wireless communication system, the method comprising:
A. allocating a set of frequency patterns for cells in the wireless communication system in each transmission time interval, TTI;
B. dividing sub-carriers on a time-frequency plane in the cell into scheduling frequency bands, and allocating the divided scheduling frequency bands to each user of the cell;
C. selecting time frequency pattern from the time frequency pattern group to distribute to each user of the district, each user adopts the distributed time frequencyThe time frequency pattern units of the pattern in the assigned scheduling frequency band transmit data, the time frequency pattern units adopted by each user have no intersection point, wherein, an FP is assigned to one user in the cellallAnd a certain appropriate SBSubset kThe time-frequency pattern unit obtained by the intersection of the two groups allocates SB to another user in the cellallAnd a suitable FPSubset jThe intersection of (a) the resulting time-frequency pattern unit, the SBSubset kRepresenting the scheduling frequency bands occupied by users, the subset k is a subset of the set {1, 2., N }, the whole frequency band on the time-frequency plane is divided into N scheduling frequency bands, and the FPSubset jRepresenting the time frequency patterns occupied by users, wherein the subset j is the subset of a set {1, 2., M }, and M is the number of the time frequency patterns occupying the whole time frequency plane, and FPallThe time frequency pattern occupied by the user is the time frequency pattern occupying the whole time frequency plane, and the SBallThe scheduling frequency band occupied by the user is the whole frequency band on the time frequency plane.
2. The method of claim 1, wherein when the moving speed of the user in the cell is fast, the scheduling frequency band allocated to the user in step B is the whole frequency band on the time-frequency plane in the cell;
and when the moving speed of the user in the cell is low, the scheduling frequency band allocated to the user in the step B is a scheduling frequency band with good transmission quality fed back by the channel estimation of the previous TTI or TTIs.
3. The method of claim 2, wherein the fast moving user is a user moving at 120 km/h or more; the user with slow moving speed is the user with the moving speed less than 120 km/h.
4. The method of claim 1, wherein the allocated scheduling frequency bands for each user in the cell in step B are one or more.
5. The method of claim 1, wherein the time-frequency pattern assigned to each user in step C is one or more according to the transmission rate of the data to be transmitted.
6. The method of claim 1, wherein when the time-frequency patterns allocated to the respective users in step C are the same,
the divided scheduling frequency bands allocated by the users are different.
7. The method of claim 1, wherein when the time-frequency patterns allocated to the respective users in step C are different,
and the scheduling frequency bands allocated and divided by the users are the same.
8. The method of claim 1, wherein the time-frequency pattern group of step a is composed of Costas sequence, Latin sequence or linear hyperbolic sequence through cyclic shift in frequency domain or time domain; or a plurality of time frequency patterns which have no intersection point and occupy the whole time frequency plane.
9. The method of claim 1, wherein the one suitable FPSubset jIncluding one or more time-frequency patterns selected from the set of time-frequency patterns allocated for cells in a wireless communication system, based on the rate at which data is to be transmitted by the user.
10. The method of claim 1, wherein the certain proper subset of FPs j includes a SB in the one subscriberSubset kAfter determination, with the SBSubset kAny time-frequency pattern with empty intersection; or
The certain appropriate SBSubset kIncluding, at the FP of the other userSubset jDeterminingThen, with the FPSubset jAny time cell within a scheduling band with a better channel quality whose intersection is empty.
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| EP2159938A4 (en) * | 2007-06-18 | 2013-09-18 | Mitsubishi Electric Corp | Communication method, wireless communication system, transmitter, and receiver |
| CN101599793B (en) * | 2008-06-05 | 2014-03-12 | 华为技术有限公司 | Method for determining service condition of physical resource block, device and system |
| CN102271407B (en) * | 2008-09-04 | 2014-04-30 | 中兴通讯股份有限公司 | Method for dispatching terminal |
| US8855064B2 (en) * | 2010-01-12 | 2014-10-07 | Qualcomm Incorporated | Bundled frequency division multiplexing structure in wireless communications |
| CN102684851A (en) * | 2011-03-11 | 2012-09-19 | 中兴通讯股份有限公司 | Channel information feedback method and device |
| WO2013050247A1 (en) * | 2011-10-03 | 2013-04-11 | Telefonaktiebolaget L M Ericsson (Publ) | Multiplexing control and data in one resource block |
| CN109039565A (en) * | 2012-03-16 | 2018-12-18 | 北京新岸线移动多媒体技术有限公司 | A kind of resource regulating method and device |
| CN108282867B (en) * | 2017-01-05 | 2021-09-21 | 华为技术有限公司 | Data transmission method, device and system |
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2005
- 2005-06-07 CN CN200510075794A patent/CN100579000C/en active Active
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