CN108449795B - Method and device for resource allocation and communication system - Google Patents

Method and device for resource allocation and communication system Download PDF

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CN108449795B
CN108449795B CN201810045236.5A CN201810045236A CN108449795B CN 108449795 B CN108449795 B CN 108449795B CN 201810045236 A CN201810045236 A CN 201810045236A CN 108449795 B CN108449795 B CN 108449795B
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user equipment
size
resource block
resource
rbg
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CN108449795A (en
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黎超
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Honor Device Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method and a device for resource allocation and a communication system, aiming at flexibly allocating resource blocks for each user equipment. The method comprises the following steps: allocating at least one set of first resource blocks of size S1 for a first user equipment and at least one set of second resource blocks of size S2 for a second user equipment; indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively. On one hand, the method provided by the embodiment of the invention allocates resource blocks dedicated to one or more user equipment to different user equipment in different channel environments respectively according to the actual application scene, so that the receiving performance of the user equipment side can be optimized; on the other hand, the distributed resource blocks are respectively indicated to different user equipment, so that the overhead of system control signaling is reduced, and precious resources can be saved for the system.

Description

Method and device for resource allocation and communication system
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for resource allocation and a communication system.
Background
Currently, a radio communication system in which coherent demodulation based on a reference signal is used is mainly used, and therefore, the role of the reference signal is important in the radio communication system. For example, in a Multiple Input Multiple Output (MIMO) wireless communication system with Multiple antennas, the design of the reference signal is very critical, and particularly, the design requirement for the reference signal is higher as the number of antennas of the MIMO wireless communication system is larger. Taking the Release-8 (Rel-8) system of Long Term Evolution (LTE) as an example, it supports a configuration of 4 transmit antennas in total, and the Reference Signal used is a Cell-specific Reference Signal (CRS) based on an antenna port. Configuration of CRS has three cases of 1 antenna, 2 antennas, and 4 antennas. In other words, there are how many different CRS signals are needed to support demodulation of the signal on each antenna, as there are actual physical transmit antennas.
Dedicated pilot based DeModulation Reference Signal (DM-RS) was introduced gradually in LTE Rel-8 and later releases thereof. The DM-RS reference signal is sent on a layer parallel to an actually used space instead of only on a physical antenna port, for example, when there are 4 transmitting antennas, the CRS is used to allocate a reference signal to each transmitting antenna, and when the DM-RS is used, even if there are 4 physical antennas actually used, if there are only 2 layers in the space, only 2 layers of DM-RS are needed; the basic way to implement DM-RS is that the precoding vector used by the DM-RS for each user is the same as the precoding vector used by the data. From the above description, it is known that DM-RS is more flexible and more efficient than CRS, and therefore, the trend is to use DM-RS as much as possible where DM-RS can be used.
When DM-RS is used, there are two ways of allocating resources, such as Physical Resource Blocks (PRBs), to users, namely, continuous allocation and distributed allocation. From the receiver perspective on the User Equipment (UE) side, if joint channel estimation can be performed using as many consecutive PRBs as possible when performing channel estimation, the performance of the UE receiver can be guaranteed to the maximum extent. Of course, the joint channel estimation using DM-RSs from multiple consecutive PRBs has a precondition that the same precoding vector is used in the adjacent PRBs, which can ensure that the equivalent channels on the adjacent PRBs are consecutive. Since the precoding vector used by the DM-RS is completely the same as the precoding vector used by the data, in order to maximize the capacity, the scheduler on the base station (eNodeB) side allocates different precoding vectors to each PRB according to the obtained downlink Channel State Information (CSI), in other words, the precoding vectors allocated to adjacent PRBs may be the same or different. Since the joint channel estimation using DM-RSs from multiple consecutive PRBs has the aforementioned precondition, the uncertainty of allocating precoding vectors to adjacent PRBs actually means that no guarantee can be provided for the UE to perform joint channel estimation using DM-RSs from multiple consecutive PRBs.
In order to solve the above problems, the existing LTE protocol introduces the concept of PRB bundling in Rel-10 release, and further defines a Pre-coding Resource block Group (PRG). When the UE is configured in Transport Mode 9 (TM 9), each UE is allocated PRGs of the same size, i.e. each PRG contains the same number of PRBs, and the same precoding vector is used on all PRBs of the PRG.
However, the practical application scenario has diversified channel environments encountered by UEs, and each UE has different channel conditions, so the above-mentioned prior art method for allocating PRGs has the biggest drawback that the size of PRGs is fixed for each configured bandwidth, and it is not optimal to use the fixed-size PRGs for all users using TM9 in a cell. Typically, the coverage area of a small cell is usually only a range of several tens of meters to 100 meters, and the number of UEs communicating under the small cell is small, so that each UE is allocated more resources, and its wireless channel is more stable, i.e. the time-varying characteristic and the frequency selection characteristic of the channel are both small. In this scenario, the fixed-size PRG defined in Rel-10 by the existing LTE protocol no longer applies.
Disclosure of Invention
The embodiment of the invention provides a method and a device for resource allocation and a communication system, aiming at flexibly allocating resource blocks for each user equipment.
The embodiment of the invention provides a resource allocation method, which comprises the following steps:
allocating at least one set of first resource blocks of size S1 for a first user equipment and at least one set of second resource blocks of size S2 for a second user equipment, the first resource blocks being units of wireless resources used by the first user equipment for wireless communications and the second resource blocks being units of wireless resources used by the second user equipment for wireless communications;
indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively.
An embodiment of the present invention provides a device for resource allocation, where the device includes:
an allocating module, configured to allocate at least one group of first resource blocks with a size of S1 to a first user equipment and allocate at least one group of second resource blocks with a size of S2 to a second user equipment, where the first resource blocks are radio resource units used by the first user equipment for wireless communication, and the second resource blocks are radio resource units used by the second user equipment for wireless communication;
an indicating module, configured to indicate the first resource block with the size of S1 and the second resource block with the size of S2 to the first user equipment and the second user equipment, respectively.
An embodiment of the present invention provides a communication system, including: the base station, the first user equipment and the second user equipment;
the base station is configured to allocate at least one group of first resource blocks of size S1 to the first user equipment and allocate at least one group of second resource blocks of size S2 to the second user equipment, and respectively indicate the first resource blocks of size S1 and the second resource blocks of size S2 to the first user equipment and the second user equipment, where the first resource blocks are radio resource units used by the first user equipment for radio communication, and the second resource blocks are radio resource units used by the second user equipment for radio communication;
the first user equipment is configured to perform channel estimation according to the size S1 of the resource block indicated by the base station;
and the second user equipment is configured to perform channel estimation according to the size S2 of the resource block indicated by the base station.
As can be seen from the foregoing embodiments of the present invention, on one hand, because the method provided in the embodiments of the present invention allocates resource blocks dedicated to one or more user equipments to different user equipments in different channel environments according to an actual application scenario, the receiving performance at the user equipment side can be optimized; on the other hand, the distributed resource blocks are respectively indicated to different user equipment, so that the overhead of system control signaling is reduced, and precious resources can be saved for the system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed in the prior art or the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art.
FIG. 1 is a flowchart illustrating a method for allocating resources according to an embodiment of the present invention;
fig. 2 is a schematic signal propagation diagram in a small cell provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of allocating RBGs, i.e., the RBG and the PRG, to a first user equipment and a second user equipment according to an embodiment of the present invention;
fig. 4 is a schematic diagram of allocating RBGs, i.e., the RBG and the PRG, to a first user equipment and a second user equipment according to another embodiment of the present invention;
fig. 5 is a schematic diagram of allocating RBGs, i.e., the RBG and the PRG, to a first user equipment and a second user equipment according to another embodiment of the present invention;
fig. 6 is a schematic diagram of allocating RBGs, i.e., the RBG and the PRG, to a first user equipment and a second user equipment according to another embodiment of the present invention;
fig. 7 is a schematic view of an interaction flow between a user equipment in an LTE system according to a resource allocation method and an enb provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a long term evolution LTE communication system according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an apparatus for resource allocation according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 11 is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 12 is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 13 is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 14-a is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 14-b is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 14-c is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 14-d is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 14-e is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 15-a is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 15-b is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 15-c is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 15-d is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 15-e is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 16-a is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 16-b is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 16-c is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 16-d is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 16-e is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 17-a is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 17-b is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 17-c is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 17-d is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 17-e is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 18-a is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 18-b is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 18-c is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 18-d is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
FIG. 18-e is a schematic diagram of an apparatus for resource allocation according to another embodiment of the present invention;
fig. 19 is a schematic hardware structure diagram of a base station according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one skilled in the art from the embodiments given herein are intended to be within the scope of the invention.
Referring to fig. 1, a schematic flow chart of a method for resource allocation according to an embodiment of the present invention is shown, which mainly includes step S101 and step S102, and is described in detail as follows:
s101, allocating at least one group of first resource blocks with the size of S1 to the first user equipment and allocating at least one group of second resource blocks with the size of S2 to the second user equipment.
In this embodiment of the present invention, the first resource block is a radio resource unit used by the first user equipment for radio communication, the second resource block is a radio resource unit used by the second user equipment for radio communication, the first user equipment and the second user equipment may be two different user equipments under a small cell, and the radio resource used by the first user equipment and the second user equipment for radio communication may be a physical resource block PRB. In the embodiment of the present invention, if not specifically stated, a Group of Resource blocks (including a first Resource Block and a second Resource Block) may be a Pre-coding Resource Block Group (PRG) composed of a plurality of PRBs or a Resource Block Group (RBG) composed of a plurality of PRBs; in essence, both RBGs and PRGs are radio resources allocated to user equipment for wireless communications, and the relationship between them is that an RBG may contain one or more PRGs, and for the same PRG, all PRBs contained therein transmit data with the same precoding vector.
In the following, only the PRG is taken as an example of the resource blocks allocated to the user equipments, and at least one set of the first resource blocks with the size of S1 is allocated to the first user equipment, and at least one set of the second resource blocks with the size of S2 is allocated to the second user equipment. It should be noted that, without specific description, the method for allocating PRG to the ue is also applicable to allocating RBG to the ue.
In the present embodiment, the size of S1 may be different from S2. That is, in this embodiment, the enb may allocate resource blocks of different sizes for different ues. That is, one or more user equipments may be allocated resource blocks dedicated to the one or more user equipments, instead of limiting all resource blocks to the same size, which improves flexibility of resource unit allocation.
As described above, under a small cell, although the coverage of the site of the small cell becomes small, since the application scenarios are mainly urban areas with dense buildings and indoors, the coverage environment may become more complicated. So-called small cells, also called microcells (microcells), are cells with a small coverage radius (approximately 30-300 m), low transmission power (typically below 1W) and relatively low antennas for the transmitter/receiver under the macrocell, whose signal propagation mainly follows the line of sight of the street. As shown in fig. 2, is a schematic diagram of signal propagation in a small cell. In the example of fig. 2, the signal received by the first user equipment (UE1) from the small cell is different from the signal received by the second user equipment (UE2) by a relatively large amount, that is, the relative delay of the signal received by the first user equipment from different reflection sources is small, and the relative delay of the signal received by the second user equipment from different reflection sources is large, which corresponds to the fact that the wireless channel is characterized by a small delay spread of the channel of the first user equipment and a large delay spread of the channel of the second user equipment. The delay spread refers to a phenomenon in which the pulse width of a received signal is spread by multipath effects. In order to obtain the optimal beamforming gain and receiver performance for each ue, in this embodiment of the present invention, if the channel delay spread of a first ue is smaller than the channel delay spread of a second ue, a second resource block with a size larger than that of a first resource block allocated to the second ue is allocated to the first ue, that is, if a first resource block with a size of S1 is allocated to the first ue and a second resource block with a size of S2 is allocated to the second ue, S1 is greater than S2. Taking fig. 2 as an example, for the first user equipment (UE1), since the channel delay spread of the first user equipment is smaller relative to the channel delay spread of the second user equipment (UE2), the granularity of the resource allocated to the first user equipment (UE1) may be divided into coarser granularity and the granularity of the resource allocated to the second user equipment (UE2) may be divided into finer granularity, that is, the size S1 of the PRG allocated to the first user equipment (UE1) is larger than the size S2 of the PRG allocated to the second user equipment (UE 2).
For a given wireless communication system, the number of data streams that can be transmitted in parallel in space on one same time-frequency resource is characterized by using a Rank (Rank), that is, on the same time-frequency resource, the larger the number of data streams that can be transmitted in parallel in space by user equipment is, the higher the Rank can be supported by the user equipment is, the value range of the Rank is [1, min (Ntx, Nrx) ], that is, the minimum value of the Rank is 1, and the maximum value is the smaller value between the number of receiving antennas and the number of transmitting antennas in the wireless communication system composed of the user equipment and the base station. For example, if an evolved node b (eNB) has 4 antennas and a User Equipment (UE) has 2 antennas, the Rank value range is [1, 2 ]; if both the eNB and the UE have 4 antennas, the Rank value range is [1, 4 ]. When the number of the transmitting and receiving antennas of the eNB and the UE is fixed, the specific value of Rank is determined by the parallelism of the wireless channel, namely the maximum value of the H Rank of the wireless channel matrix. In a situation that the channel delay spread of the first user equipment and the channel delay spread of the second user equipment are substantially the same, as another embodiment of the present invention, which allocates at least one group of first resource blocks with a size of S1 to the first user equipment and allocates at least one group of second resource blocks with a size of S2 to the second user equipment, if the number of data streams that are transmitted in parallel in space by the first user equipment is larger than the number of data streams that are transmitted in parallel in space by the second user equipment on the same time-frequency resource, the second resource blocks with a size that is larger than the size of the first resource blocks allocated to the second user equipment are allocated to the first user equipment, that is, if the PRG with a size of S1 is allocated to the first user equipment and the PRG with a size of S2 is allocated to the second user equipment, S1 is larger than S2. Generally, the higher Rank is used in transmission, the higher the requirement for channel estimation, and the larger PRG, the higher the accuracy of channel estimation and demodulation. Therefore, if different PRGs are configured according to the rank used for actual transmission between the base station (eNB) and the User Equipment (UE), that is, a larger PRG is allocated to a user equipment with a larger rank used for actual transmission between the base station (eNB) and the User Equipment (UE), it is advantageous for the user equipment to improve the accuracy of channel estimation and demodulation.
Since the number of channels to be estimated for a user equipment using a Cell-specific Reference Signal (CRS) is proportional to the number of receiving antennas of the user equipment, i.e., the more antennas supported by the user equipment, the more channels to be estimated for a UE using the CRS. In this embodiment of the present invention, if the number of antennas supported by the first user equipment is greater than the number of antennas supported by the second user equipment, the first user equipment is allocated a second resource block with a size greater than that of the first resource block allocated to the second user equipment, that is, if the first user equipment is allocated a PRG with a size of S1 and the second user equipment is allocated a PRG with a size of S2, S1 is greater than S2.
As a further embodiment of the present invention, allocating at least one set of first resource blocks of size S1 to a first user equipment and at least one set of second resource blocks of size S2 to a second user equipment, at least one set of first resource blocks of size S1 may be allocated to the first user equipment and at least one set of second resource blocks of size S2 may be allocated to the second user equipment according to a first transmission mode used by the first user equipment and a second transmission mode used by the second user equipment, such that the first transmission mode corresponds to the first resource blocks and the second transmission mode corresponds to the second resource blocks. For example, the first transmission mode TM11a and the second transmission mode TM11b are defined, and the PRG sizes corresponding to various system bandwidths in the first transmission mode TM11a are shown in table 1-a, and the PRG sizes corresponding to various system bandwidths in the second transmission mode TM11b are shown in table 1-b:
Figure BDA0001550707980000061
TABLE 1-a
Figure BDA0001550707980000062
TABLE 1-b
When directly or indirectly indicating to the first user equipment that the transmission mode used is TM11a, then the first resource block allocated to the first user equipment is a PRG under the system bandwidth shown in table 1-a; when the transmission mode used is directly or indirectly indicated to the second user equipment as TM11b, then the second resource block allocated to said second user equipment is PRG under the system bandwidth shown in table 1-b, such that the first transmission mode corresponds to PRG under the system bandwidth shown in table 1-a and the second transmission mode corresponds to PRG under the system bandwidth shown in table 1-b. The benefit of this approach is that the size of the PRG is correlated with the information of the transmission mode, no additional separate indication to the user equipment by other signaling is needed, and the transmission mode can also be changed dynamically and rapidly, thus preserving sufficient flexibility.
It should be noted that, in the foregoing embodiments, the resource block allocation strategy is made on the premise that the communication environments of the first user equipment and the second user equipment are different, if the communication environments of the first user equipment and the second user equipment are completely the same, for example, the channel delay spread of the first user equipment is the same as the channel delay spread of the second user equipment, on the same time-frequency resource, the number of data streams transmitted by the first user equipment in parallel in space is equal to the number of data streams transmitted by the second user equipment in parallel in space, the number of antennas supported by the first user equipment is equal to the number of antennas supported by the second user equipment, or the first transmission mode used by the first user equipment is the same as the second transmission mode used by the second user equipment, and so on, it is not necessary to allocate resource blocks with different sizes to the first user equipment and the second user equipment, that is, the first user equipment may be allocated a second resource block with a size equal to that of the first resource block allocated to the second user equipment.
As described above, both RBGs and PRGs are radio resources allocated to user equipment for radio communication, and a relationship between them is that an RBG may include one or more PRGs. As another embodiment of the present invention, allocating at least one set of first resource blocks of size S1 for a first user equipment and at least one set of second resource blocks of size S2 for a second user equipment, may be allocating at least one first RBG of size S1 for the first user equipment (UE1) and at least one first PRG for the first user equipment within the first RBG, and allocating at least one second RBG of size S2 for the second user equipment (UE2) and at least one second PRG for the second user equipment within the second RBG. As shown in fig. 3, a first ue is allocated one RBG with size of 9PRBs, that is, the RBG includes 9PRBs, and two PRGs are allocated to the first ue within the RBG, wherein one PRG with size of 4PRBs includes 4PRBs, and the other PRG with size of 5PRBs includes 5 PRBs; allocating an RBG with a size of 8PRBs for the second ue, i.e. the RBG contains 8PRBs, and allocating two PRGs within the RBG for the second ue, wherein one PRG with a size of 3PRBs, i.e. the PRG contains 3PRBs, and the other PRG with a size of 5PRBs, i.e. the PRG contains 5 PRBs.
In the above embodiment, where at least one first RBG with the size S1 is allocated to a first user equipment, and at least one first PRG is allocated to the first user equipment in the first RBG, at least one first PRG with the size S' 1 may be allocated to the first user equipment in the first RBG, that is, the first RBG is divided into several first PRGs and then allocated to the first user equipment; in the above embodiment, in which at least one second RBG with the size of S2 is allocated to the second ue, and at least one second PRG is allocated to the second ue in the second RBG, at least one second PRG with the size of S' 2 may be allocated to the second ue in the second RBG, that is, the second RBG is divided into several second PRGs and then allocated to the second ue. As shown in fig. 4, an RBG with a size of 11PRBs, i.e. the RBG contains 11PRBs, is allocated to a first user equipment, and two PRGs are allocated to the first user equipment within the RBG, each PRG with a size of 5PRBs, i.e. each RBG contains 5 PRBs; the RBG with the size of 9PRBs allocated to the first user equipment, namely the RBG comprises 9PRBs, the second user equipment is allocated with two PRGs in the RBG, and each PRG with the size of 4PRBs, namely each RBG comprises 4 PRBs.
When at least one first PRG with the size of S '1 is allocated to the first user equipment in a first RBG with the size of S1, the S1 is an integral multiple of the S' 1 as much as possible; similarly, when at least one second PRG having the same size as S '2 is allocated to the second user equipment within the second RBG having the size of S2 allocated to the second user equipment, S2 is an integer multiple of S' 2 as much as possible. As shown in fig. 5, an RBG with a size of 12PRBs, i.e. the RBG contains 12PRBs, is allocated to a first user equipment, and two PRGs are allocated to the first user equipment within the RBG, each PRG with a size of 6PRBs, i.e. each RBG contains 6 PRBs; the RBG with the size of 10PRBs allocated to the first user equipment, namely the RBG comprises 10PRBs, the second user equipment is allocated with two PRGs in the RBG, and each PRG with the size of 5PRBs, namely each RBG comprises 5 PRBs. Since the entire resource is allocated in RBG units, when the size of the PRG can be divided by the size of the RBG, it is guaranteed that the PRG is allocated within one RBG without spanning multiple RBGs, which is an advantage of the allocation method illustrated in fig. 5.
As the present invention allocates at least one first RBG of size S1 to a first user equipment and allocates at least one first PRG within the first RBG to the first user equipment, and another embodiment where a second user equipment is assigned at least one RBG of size S2 and within the second RBG is assigned at least one second PRG for the second user equipment, a plurality of first PRGs of different sizes may be allocated to the first user equipment within the first RBG of size S1, and allocating the first user equipment a size of a larger one of the plurality of different-sized first PRGs to be an integer multiple of a size of a smaller first PRG, assigning a plurality of second PRGs of different sizes to the second user equipment within the second RBG of size S2, and allocating the second user equipment a size of a larger second PRG of the plurality of different-sized second PRGs to be an integer multiple of a size of a smaller second PRG. As shown in fig. 6, a RBG with a size of 15PRBs is allocated to a first ue, i.e. the RBG includes 15PRBs, and two PRGs are allocated to the first ue within the RBG, wherein one PRG with a size of 10PRBs includes 10PRBs, and the other PRG with a size of 5PRBs includes 5 PRBs; allocating an RBG with a size of 8PRBs for the second ue, i.e. the RBG comprises 12PRBs, and allocating two PRGs within the RBG for the second ue, wherein one PRG with a size of 8PRBs, i.e. the PRG comprises 8PRBs, and the other PRG with a size of 4PRBs, i.e. the PRG comprises 4 PRBs.
In the embodiment of the present invention, different PRGs may be allocated to all system bandwidths supported by the ue, and for a small cell, since throughput in a local region is improved, only a large system bandwidth may be allocated, that is, in the embodiment of the present invention, only PRGs of different sizes may be allocated to a large system bandwidth.
In the prior art, for user equipments in different communication environments, for example, under different channel conditions and different transmission modes, the RBGs are all fixed and the values are not too large, so that a great waste of signaling overhead is brought to user equipments with particularly good channel conditions. Because the smaller the RBG size is, the more signaling is required to indicate the RBGs, for example, a system with a bandwidth of 20MHz has 100PRBs, and is allocated according to the RBG size of 4PRBs, 100/4 ═ 25 resource locations need to be indicated; if the channel condition of a certain ue is good and the size of the RBG allocated to the ue is 10PRBs, it is only necessary to indicate 100/10 as 10 resource locations. Therefore, according to the embodiments of the present invention, RBGs and/or PRGs with different sizes are allocated to user equipments in different communication environments, for example, under different channel conditions, so that the overhead in DCI signaling for indicating resource allocation can be greatly reduced.
S102, indicating the first resource block with the size of S1 and the second resource block with the size of S2 to the first user equipment and the second user equipment respectively.
In an embodiment of the present invention, in the foregoing step S101, at least one group of first resource blocks with a size of S1 corresponds to a first resource block configuration table, and at least one group of second resource blocks with a size of S2 corresponds to a second resource block configuration table. As an embodiment of the present invention, indicating a first resource block with a size of S1 and a second resource block with a size of S2 to a first user equipment and a second user equipment, respectively, may be indicating the first resource block configuration table to the first user equipment through signaling to indicate the first resource block with the size of S1, and indicating the second resource block configuration table to the second user equipment through signaling to indicate the second resource block with the size of S2. The signaling may be Radio Resource Control (RRC) signaling, Downlink Control Information (DCI) signaling, or a combination of RRC and DCI signaling; the indication mode may be a displayed signaling indication, or a piggybacked or hidden indication using existing signaling and channels. The advantage of indicating the resource block configuration table to the user equipment by signaling is that less signaling is used, the dynamics are good and the signaling indicates the block, which can better adapt to the change of the channel.
As another embodiment of the present invention, which indicates a first resource block with a size of S1 and a second resource block with a size of S2 to a first user equipment and a second user equipment respectively, the size S1 of the first resource block allocated to the first user equipment can be indicated to the first user equipment through signaling, and the size S2 of the second resource block allocated to the second user equipment can be indicated to the second user equipment through signaling, that is, the size S1 of the first resource block allocated to the first user equipment is directly indicated to the first user equipment through signaling, and the size S2 of the second resource block allocated to the second user equipment is directly indicated to the second user equipment through signaling.
After step S102, the first resource block with size S1 and the second resource block with size S2 may be further utilized for signal transmission with the first user equipment and the second user equipment, respectively. After the resource unit allocation, the enb may communicate with the ue according to the allocated resource unit size, such as transmitting data. How to use resource units for data transmission between different communication devices is the prior art, and this embodiment will not be further described. By flexibly allocating resource units which are dedicated to one or more user equipment, the resource allocation is more flexible, and different user equipment can communicate by using the resource units which are more suitable for the communication conditions of the user equipment. Each method flow or device provided by the embodiment of the invention is particularly suitable for the application scene of the small cell, so that the user equipment in the small cell can communicate by using the resource unit which is dedicated to the user equipment, and the application environment in the small cell is better adapted.
As can be seen from the method for resource allocation provided in the foregoing embodiment of the present invention, on one hand, the method provided in the embodiment of the present invention allocates resource blocks of different sizes to the user equipments in different channel environments according to an actual application scenario, so that the receiving performance of the user equipment side can be optimized; on the other hand, by respectively indicating the allocated resource blocks with different sizes to different user equipment, the overhead of system control signaling is reduced, and precious resources can be saved for the system.
To more clearly illustrate the method for resource allocation provided by the above embodiment of the present invention, the interaction between the ue and the evolved node b (eNB) in the LTE system is further described below with reference to fig. 7, where the ue in the LTE system interacts with the evolved node b (eNB) according to the method for resource allocation provided by the embodiment of the present invention. In the example of fig. 7, the system bandwidth of 10MHz has 50 PRBs, and is allocated to 2 user equipments of a first user equipment and a second user equipment, the number of RBGs allocated by the first user equipment is 3, the size of each RBG is 10PRBs, the number of RBGs allocated by the second user equipment is 4, the size of each RBG is 5PRBs, and the interaction flow illustrated in fig. 7 is as follows:
s701, each user equipment reports CSI to an evolution base station (eNB).
The ue reports Information such as the status of Channel State Information (CSI) to an evolved node b (eNB).
S702, an evolution base station (eNB) determines the size of the RBG and/or the PRG allocated to each user equipment according to the scheduling information obtained by the scheduler.
The scheduling information obtained by the scheduler includes: one or any combination of the status of the CSI reported by each ue, the Rank value of each ue transmission, the number of antennas of each ue, and the transmission mode of each ue. The evolved node b (eNB) determines the size of the RBG and/or PRG allocated to each ue according to the scheduling information obtained by the scheduler, where the specific allocation method is as shown in step S101 in fig. 1. For example, according to the scheduling information obtained by the scheduler, the evolved node b (eNB) allocates 10PRBs to the first user equipment and 5PRBs to the second user equipment.
S703, the evolved node b (eNB) determines how many RBGs to allocate to each ue according to the size of the data volume to be transmitted.
For example, assuming that the amount of data that needs to be transmitted by the first user equipment (UE1) is larger, then 3 RBGs, each containing 10PRBs, are allocated to the first user equipment (UE1), and the amount of data that needs to be transmitted by the second user equipment (UE2) is smaller, then 4 RBGs, each containing 5PRBs, are allocated to the first user equipment (UE 1).
S704, the evolution base station (eNB) allocates precoding vectors to each PRB in each PRG.
Specifically, the evolved nodeb (eNB) allocates an optimal precoding vector to each PRB of each PRG in the allocated resource according to the size of the PRG determined in step S701 and the CSI fed back by each ue.
S705, the evolved node B (eNB) performs precoding operation on the data to be transmitted by using the selected precoding vector on each PRB.
S706, the evolution base station (eNB) maps the data after the precoding operation to each physical antenna port needing to be transmitted.
S707, the evolved node b (eNB) transmits data to each user equipment.
That is, the baseband data at each physical antenna port is sent to the rf unit for data transmission.
S708, the evolved node b (eNB) indicates the allocated resource blocks to each user equipment.
The specific indication method is as step S102 illustrated in fig. 1, and includes: the resource block configuration table is indicated to each user equipment through signaling to indicate the resource block corresponding to the resource block configuration table, where the signaling may be RRC signaling, DCI signaling, or a combination of RRC and DCI signaling, may be a displayed signaling indication, or a piggybacked or hidden indication using existing signaling and channels, or may be a size indicating the allocated resource block directly to each user equipment through signaling.
S709, the ue demodulates the resource block allocated to itself and the indication information of the size thereof from the signaling.
Specifically, each ue receives the transmitted data and signaling transmitted in the control channel from the traffic channel, demodulates the DCI sent to it commonly and exclusively from the control channel, e.g., PDCCH and enhanced PDCCH, and reads the RBG resources allocated to it (i.e., which RBGs on the bandwidth are allocated to itself) and the size information of the indicated RBG from the DCI; further, each user equipment reads size information indicating a PRG given to it from the DCI.
S710, each user equipment carries out channel estimation of DM-RS on a plurality of PRBs in the whole PRG.
Specifically, each user equipment performs channel estimation of DM-RS on a plurality of PRBs in the whole PRG according to the PRG size information acquired by the user equipment. According to the example of the size of the RBG and/or PRG allocated to each UE by the evolved nodeb (eNB) in step S701, for the first UE (UE1), the size of the RBG is 10PRBs, and the size of the PRG is 10PRBs, so the first UE (UE1) uses multiple consecutive PRBs for channel estimation within 10PRBs of the whole PRG. The number of actually used PRBs may be 10PRBs, which is the size of a PRG, or 3PRBs or 5PRBs, etc.; the number of PRBs used for channel estimation depends on the trade-off between channel estimation performance and complexity when the user equipment is implemented. The channel estimation method of the user equipment is characterized in that the user equipment performs combined channel estimation in the PRB where the PRG is located according to the size of the PRG after receiving the indication information of the size of the PRG.
S711, each ue acquires the demodulated and decoded information bits.
Each user equipment demodulates the data part of the received data sent to the RBG of the user equipment according to the estimated channel on each PRB on the corresponding RBG, finally obtains the demodulated and decoded information bits, and sends the information bits to the upper layer of a user equipment receiver for further processing.
Corresponding to the interaction flow of fig. 7, fig. 8 shows a long term evolution LTE communication system provided by the embodiment of the present invention, which includes an evolved base station 81 and a user equipment 82, wherein the evolved base station 81 includes a resource block selection unit 811, a scheduler 812, a precoder 813 and a transmission unit 814, and the user equipment 82 includes a receiver 821, a channel estimator 822 and a transmitter 823. The user equipment 82 feeds back information such as the status of CSI to the scheduler 812 of the evolved base station 81 via the transmitter 823. The scheduling information obtained by the scheduler 812 includes one or any combination of the CSI reported by each ue, the Rank value of transmission of each ue, the number of antennas of each ue, and the transmission mode of each ue, and the resource block selection unit 811 determines the RBGs and/or PRGs allocated to each ue according to the scheduling information obtained by the scheduler 812. The precoder 813 performs precoding operation on data to be transmitted by using a selected precoding vector on each PRB according to the size of the RBG and/or PRG determined to be allocated to each user equipment, maps the data after the precoding operation to each Physical antenna port that needs to be transmitted, and the transmitter 823 transmits baseband data on each Physical antenna port to the user equipment 82 through Physical channels such as a Physical Downlink Shared Channel (PDSCH). The receiver 821 of the user equipment 82 demodulates the common DCI and the DCI specifically transmitted to it from the control channel, for example, the PDCCH and the enhanced PDCCH, and then the channel estimator 822 performs channel estimation of the DM-RS on a plurality of PRBs in the whole PRG according to the demodulated DCI, for example, performs joint channel estimation in the PRBs where the PRG is located according to the size of the PRG.
Fig. 9 is a schematic structural diagram of a resource allocation apparatus 09 according to an embodiment of the present invention. For convenience of explanation, only portions related to the embodiments of the present invention are shown. The apparatus for resource allocation illustrated in fig. 9 may be a base station, for example, an evolved base station of an LTE system, or a functional unit/module therein, and includes an allocation module 901 and an indication module 902, where:
an allocating module 901, configured to allocate at least one group of first resource blocks with a size of S1 to a first user equipment and allocate at least one group of second resource blocks with a size of S2 to a second user equipment, where the first resource blocks are radio resource units used by the first user equipment for wireless communication, and the second resource blocks are radio resource units used by the second user equipment for wireless communication.
An indicating module 902, configured to indicate the first resource block with the size of S1 and the second resource block with the size of S2 to the first user equipment and the second user equipment, respectively.
It should be noted that, in the embodiment of the apparatus 09 for allocating resources, the division of each functional module is only an example, and in practical applications, the above-mentioned functional allocation may be performed by different functional modules according to needs, for example, configuration requirements of corresponding hardware or convenience of implementation of software, that is, the internal structure of the apparatus for allocating resources is divided into different functional modules to perform all or part of the above-described functions. Moreover, in practical applications, the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be implemented by corresponding hardware executing corresponding software, for example, the allocating module may be hardware having at least one set of first resource blocks with a size of S1 allocated to the first user equipment and at least one set of second resource blocks with a size of S2 allocated to the second user equipment, for example, an allocator, or a general processor or other hardware device capable of executing a corresponding computer program to implement the foregoing functions; as another example, the indicating module may be hardware having a function of performing the aforementioned indication of the first resource block with the size of S1 and the second resource block with the size of S2 to the first user equipment and the second user equipment, respectively, for example, an indicator, or a general processor or other hardware device capable of executing a corresponding computer program to complete the aforementioned functions (the foregoing description principles may be applied to various embodiments provided in this specification).
In the present embodiment, the size of S1 may be different from S2. That is, in this embodiment, the allocating module 901 may allocate resource blocks of different sizes for different user equipments. That is, one or more user equipments may be allocated resource blocks dedicated to the one or more user equipments, instead of limiting all resource blocks to the same size, which improves flexibility of resource unit allocation.
The allocation module 901 illustrated in fig. 9 may include a first allocation unit 1001, such as the apparatus 10 for resource allocation provided by another embodiment of the present invention shown in fig. 10. The first allocating unit 1001 is configured to allocate, to the first user equipment, a second resource block whose size is larger than that of a first resource block allocated to the second user equipment, if the channel delay spread of the first user equipment is smaller than that of the second user equipment.
The allocation module 901 illustrated in fig. 9 may include a second allocation unit 1101, such as the apparatus 11 for resource allocation provided by another embodiment of the present invention shown in fig. 11. The second allocating unit 1101 is configured to allocate, to the first user equipment, a second resource block having a size larger than that of a first resource block allocated to the second user equipment, if the number of data streams transmitted by the first user equipment in parallel in space is larger than that of data streams transmitted by the second user equipment in parallel in space on the same time-frequency resource.
The allocation module 901 illustrated in fig. 9 may include a third allocation unit 1201, such as the apparatus 12 for resource allocation provided by another embodiment of the present invention shown in fig. 12. The third allocating unit 1201 is configured to, if the number of antennas supported by the first user equipment is greater than the number of antennas supported by the second user equipment, allocate a second resource block having a size greater than that of the first resource block allocated to the second user equipment to the first user equipment.
The allocation module 901 illustrated in fig. 9 may include a fourth allocation unit 1301, such as the apparatus 13 for resource allocation provided by another embodiment of the present invention shown in fig. 13. The fourth allocating unit 1301 is configured to allocate at least one set of first resource blocks with a size of S1 to the first user equipment and at least one set of second resource blocks with a size of S2 to the second user equipment according to a first transmission mode used by the first user equipment and a second transmission mode used by the second user equipment, such that the first transmission mode corresponds to the first resource blocks and the second transmission mode corresponds to the second resource blocks.
In the apparatus for resource allocation illustrated in fig. 9 to 13, the first resource block and the second resource block each include at least one of a resource block group RBG and a precoding resource block group PRG.
The allocation module 901 shown in any of fig. 9 to 13 may further include a fifth allocation unit 1401, which is shown in fig. 14-a to 14-e and is used for allocating resources according to another embodiment of the present invention. The fifth allocating unit 14 is configured to allocate at least one first RBG of size S1 to the first user equipment and allocate at least one first PRG within the first RBG for the first user equipment, allocate at least one second RBG of size S2 to the second user equipment and allocate at least one second PRG within the second RBG for the second user equipment.
The fifth allocation unit 1401 as shown in any one of fig. 14-a to 14-e may comprise a sixth allocation unit 1501 and a seventh allocation unit 1502 as shown in fig. 15-a to 15-e, which are apparatuses 15 for resource allocation according to another embodiment of the present invention, wherein:
a sixth allocating unit 1501, configured to allocate, within the first RBG, at least one first PRG having a size S' 1 to the first user equipment;
a seventh allocating unit 1502, configured to allocate at least one second PRG with the same size as S' 2 to the second user equipment in the second RBG.
Further, for the apparatus of resource allocation illustrated in fig. 15, S1 may be an integer multiple of S '1, and S2 may be an integer multiple of S' 2.
The fifth allocating unit 1401 shown in any one of fig. 14-a to 14-e may include an eighth allocating unit 1601 and a ninth allocating unit 1602, as shown in fig. 16-a to 16-e, which are apparatuses 16 for allocating resources according to another embodiment of the present invention, wherein:
an eighth allocating unit 1601, configured to allocate, within the first RBG with the size of S1, a plurality of first PRGs with different sizes to the first user equipment, where a size of a larger first PRG of the plurality of first PRGs with different sizes is an integer multiple of a size of a smaller first PRG;
a ninth allocating unit 1602, configured to allocate, within the second RBG with the size of S2, a plurality of second PRGs with different sizes to the second user equipment, where a size of a larger second PRG of the plurality of second PRGs with different sizes is an integer multiple of a size of a smaller second PRG.
The indication module 902 of any of fig. 9 to 13 may include a first indication unit 1701, such as the resource allocation apparatus 17 shown in fig. 17-a to 17-e according to another embodiment of the present invention. A first indication unit 1701 is configured to indicate the first resource block configuration table to the first user equipment by signaling to indicate the first resource block of size S1 and to indicate the second resource block configuration table to the second user equipment by signaling to indicate the second resource block of size S2.
The indication module 902 of any of fig. 9 to 13 may also include a second indication unit 1801, as shown in fig. 18-a to 18-e, which is a resource allocation apparatus 18 according to another embodiment of the present invention. The second indicating unit 1801 is configured to indicate, to the first user equipment, a size of a first resource block allocated to the first user equipment through signaling S1, and indicate, to the second user equipment, a size of a second resource block allocated to the second user equipment through signaling S2.
After the instruction module 902 performs resource unit allocation, the apparatus related to the embodiment of the present invention may further include a communication module (which belongs to the prior art and is not shown in each drawing of the embodiment). The communication module may further utilize the first resource block of size S1 and the second resource block of size S2 for signaling with the first user equipment and the second user equipment, respectively. After the resource unit is allocated, the communication module may communicate with the user equipment according to the allocated resource unit size, such as transmitting data. Specifically, the present invention may be included in an evolved base station 81 (the apparatus is not shown in fig. 8) as shown in fig. 8, and is configured to implement an allocation function of resource units, to cooperate with a resource block selection unit 811, a scheduler 812, a precoder 813 and a transmission unit 814 in the evolved base station 81 shown in fig. 8, and the resource block selection unit 811, the scheduler 812, the precoder 813 and the transmission unit 814 are configured to implement a communication function. In practice, an evolved base station may be implemented by an integrated circuit, that is, the apparatus and its internal units or modules, as well as the resource block selection unit 811, the scheduler 812, the precoder 813 and the transmission unit 814 may be implemented by a logic integrated circuit, which may be used to implement the procedures and functions in the method embodiments of the present invention when the circuits execute specific driving software, such as LTE communication standard protocol software. Some details of the flow of the method embodiments, which are not shown in the device embodiments, may be known to those skilled in the art to which the detailed functions of the units or modules in the device embodiments refer to the previous method embodiments.
An embodiment of the present invention further provides a communication system, where the communication system includes a base station, a first user equipment, and a second user equipment, where:
a base station, configured to allocate at least one group of first resource blocks of size S1 to the first user equipment and at least one group of second resource blocks of size S2 to the second user equipment, and respectively indicate, to the first user equipment and the second user equipment, the first resource blocks of size S1 and the second resource blocks of size S2, where the first resource blocks are radio resource units used by the first user equipment for radio communication, and the second resource blocks are radio resource units used by the second user equipment for radio communication;
the first user equipment is used for carrying out channel estimation according to the size S1 of the resource block indicated by the base station;
and the second user equipment is used for performing channel estimation according to the size S2 of the resource block indicated by the base station.
It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present invention, the technical effect brought by the contents is the same as the method embodiment of the present invention, and specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program instructing associated hardware, such as one or more or all of the following methods:
allocating at least one set of first resource blocks of size S1 for a first user equipment and at least one set of second resource blocks of size S2 for a second user equipment, the first resource blocks being units of wireless resources used by the first user equipment for wireless communications and the second resource blocks being units of wireless resources used by the second user equipment for wireless communications;
indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively.
As shown in fig. 19, a schematic structural diagram of a base station provided in an embodiment of the present invention includes:
a memory 191 for storing wireless communication protocol software;
a processor 192, configured to read the wireless communication protocol software from the memory 191, and under the driving of the wireless communication protocol software, allocate at least one group of first resource blocks with a size of S1 to a first user equipment and allocate at least one group of second resource blocks with a size of S2 to a second user equipment, where the first resource blocks are wireless resource units used by the first user equipment for wireless communication, and the second resource blocks are wireless resource units used by the second user equipment for wireless communication;
a wireless transceiver 193 for indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively.
In particular, processor 192 may be configured to execute, under the driving of the software, the step of S101 in the method embodiment of the present invention. The specific process of how the processor 192 allocates resources for the two ues may refer to the description in the previous method embodiment, which is not described herein again. The radio transceiver 193 can communicate with each user equipment and implement the function of indicating resource blocks, as in step S102. The specific resource indication procedure performed by the wireless transceiver 193 is also described with reference to method embodiments.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The method, apparatus and communication system for resource allocation provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific embodiments, and the description of the embodiments is only used to help understanding the method and core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (19)

1. A method of resource allocation, the method comprising:
allocating at least one set of first resource blocks of size S1 for a first user equipment and at least one set of second resource blocks of size S2 for a second user equipment, the first resource blocks being units of wireless resources used by the first user equipment for wireless communications and the second resource blocks being units of wireless resources used by the second user equipment for wireless communications;
indicating the at least one first resource block of size S1 and the at least one second resource block of size S2 to the first user equipment and the second user equipment, respectively,
the allocating at least one set of first resource blocks of size S1 for the first user equipment and at least one set of second resource blocks of size S2 for the second user equipment comprises:
allocating at least one set of first resource blocks of size S1 for the first user equipment and at least one set of second resource blocks of size S2 for the second user equipment in accordance with a first transmission mode used by the first user equipment and a second transmission mode used by the second user equipment, the first transmission mode corresponding to the first resource blocks, the second transmission mode corresponding to the second resource blocks, and the first transmission mode being different from the second transmission mode;
if the channel delay spread of the first user equipment is smaller than the channel delay spread of the second user equipment, the S1 is greater than the S2.
2. The method of claim 1, wherein the first resource block and the second resource block each comprise: at least one of a resource block group RBG and a pre-coding resource block group PRG;
the allocating at least one set of first resource blocks of size S1 for the first user equipment and at least one set of second resource blocks of size S2 for the second user equipment comprises:
allocating at least one first RBG of size S1 for the first user equipment and allocating at least one first PRG for the first user equipment within the first RBG;
allocating at least one second RBG of size S2 for the second user equipment and allocating at least one second PRG for the second user equipment within the second RBG.
3. The method of claim 2, wherein said allocating at least one first PRG for the first user device within the first RBG comprises: allocating at least one first PRG of the same size S' 1 to the first user equipment within the first RBG;
said assigning at least one second PRG for said second user equipment within said second RBG comprises: allocating at least one second PRG of the same size S' 2 to the second user equipment within the second RBG.
4. The method of claim 3, wherein the S1 is an integer multiple of the S '1, and the S2 is an integer multiple of the S' 2.
5. The method of claim 2, wherein said allocating at least one first RBG of size S1 for the first user device and at least one first PRG for the first user device within the first RBG comprises: allocating a plurality of first different-sized PRGs to the first user equipment within the first RBG of size S1, the size of a larger first PRG of the plurality of first different-sized PRGs being an integer multiple of the size of a smaller first PRG;
the allocating at least one RBG of size S2 for the second user equipment and allocating at least one second PRG for the second user equipment within the second RBG comprises: and allocating a plurality of second PRGs with different sizes to the second user equipment within the second RBG with the size of S2, wherein the size of the larger second PRG of the plurality of second PRGs with different sizes allocated to the second user equipment is an integral multiple of the size of the smaller second PRG.
6. The method of claim 1, wherein the at least one first resource block of size S1 corresponds to a first resource block configuration table, and the at least one second resource block of size S2 corresponds to a second resource block configuration table;
the indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively, comprises:
indicating the first resource block configuration table to the first user equipment by signaling to indicate the first resource block of size S1, and;
signaling the second resource block configuration table to the second user equipment to indicate the second resource block of size S2.
7. The method of claim 1 or 2, wherein the indicating the first resource block of size S1 and the second resource block of size S2 to the first user device and the second user device, respectively, comprises:
a size of a first resource block allocated to a first user equipment is indicated to the first user equipment by signaling S1 and a size of a second resource block allocated to a second user equipment is indicated to the second user equipment by signaling S2.
8. An apparatus for resource allocation, the apparatus comprising:
an allocating module, configured to allocate at least one group of first resource blocks with a size of S1 to a first user equipment and allocate at least one group of second resource blocks with a size of S2 to a second user equipment, where the first resource blocks are radio resource units used by the first user equipment for wireless communication, and the second resource blocks are radio resource units used by the second user equipment for wireless communication;
an indication module for indicating the first resource block of size S1 and the second resource block of size S2 to the first user equipment and the second user equipment, respectively,
the distribution module includes:
a fourth allocating unit, configured to allocate at least one group of first resource blocks of size S1 to the first user equipment and at least one group of second resource blocks of size S2 to the second user equipment according to a first transmission mode used by the first user equipment and a second transmission mode used by the second user equipment, wherein the first resource blocks correspond to the first transmission mode and the second resource blocks correspond to the second transmission mode, and the first transmission mode is different from the second transmission mode;
the distribution module further comprises:
a first allocating unit, configured to allocate, to the first user equipment, a second resource block whose size is larger than that of a first resource block allocated to the second user equipment if the channel delay spread of the first user equipment is smaller than that of the second user equipment.
9. The apparatus of claim 8, wherein the first resource block and the second resource block each comprise: at least one of a resource block group RBG and a pre-coding resource block group PRG;
the distribution module further comprises:
a fifth allocating unit, configured to allocate at least one first RBG of size S1 for the first user equipment and allocate at least one first PRG for the first user equipment within the first RBG, allocate at least one second RBG of size S2 for the second user equipment and allocate at least one second PRG for the second user equipment within the second RBG.
10. The apparatus of claim 9, wherein the fifth dispensing unit further comprises:
a sixth allocating unit, configured to allocate, within the first RBG, at least one first PRG with a size S' 1 to the first user equipment;
a seventh allocating unit, configured to allocate, within the second RBG, at least one second PRG having a size S' 2 for the second user equipment.
11. The apparatus of claim 10, wherein the S1 is an integer multiple of the S '1, and the S2 is an integer multiple of the S' 2.
12. The apparatus of claim 9, wherein the fifth dispensing unit further comprises:
an eighth allocating unit, configured to allocate, within the first RBG with the size of S1, a plurality of first PRGs with different sizes to the first user equipment, where a size of a larger first PRG of the plurality of first PRGs with different sizes is an integer multiple of a size of a smaller first PRG;
a ninth allocating unit, configured to allocate, within the second RBG with the size of S2, a plurality of second PRGs with different sizes to the second user equipment, where a size of a larger second PRG of the plurality of second PRGs with different sizes is an integer multiple of a size of a smaller second PRG.
13. The apparatus of claim 8, wherein the at least one first resource block size of S1 corresponds to a first resource block configuration table and the at least one second resource block size of S2 corresponds to a second resource block configuration table, the means for indicating comprises:
a first indication unit, configured to indicate the first resource block configuration table to the first user equipment through signaling to indicate the first resource block with the size of S1 and indicate the second resource block configuration table to the second user equipment through signaling to indicate the second resource block with the size of S2.
14. The apparatus of claim 8, wherein the indication module comprises:
a second indicating unit, configured to indicate, to the first user equipment, a size of a first resource block allocated for the first user equipment through signaling S1 and indicate, to the second user equipment, a size of a second resource block allocated for the second user equipment through signaling S2.
15. A method for resource acquisition, the method comprising:
a first user equipment receives signaling, wherein the signaling indicates at least one group of first resource blocks allocated to the first user equipment, the first resource block size is S1, the first resource block is a wireless resource unit used by the first user equipment for wireless communication, the first user equipment uses a first transmission mode, the first resource block corresponds to the first transmission mode, the first transmission mode is different from a second transmission mode, the second transmission mode is a transmission mode used by a second user equipment, the second transmission mode corresponds to a second resource block with a size of S2, and the second resource block is a wireless resource unit used by the second user equipment for wireless communication;
the first user equipment uses the at least one group of first resource blocks for signal transmission;
if the channel delay spread of the first user equipment is smaller than the channel delay spread of the second user equipment, the S1 is greater than the S2.
16. An apparatus for resource acquisition, the apparatus comprising:
means for receiving signaling indicating at least one set of first resource blocks allocated for a first user equipment, the first resource block being of size S1, the first resource block being a unit of wireless resources used by the first user equipment for wireless communications, the first user equipment using a first transmission mode, the first resource block corresponding to the first transmission mode, the first transmission mode being different from a second transmission mode, the second transmission mode being a transmission mode used by a second user equipment, the second transmission mode corresponding to a second resource block of size S2, the second resource block being a unit of wireless resources used by the second user equipment for wireless communications; and
means for transmitting signals using the at least one set of first resource blocks;
if the channel delay spread of the first user equipment is smaller than the channel delay spread of the second user equipment, the S1 is greater than the S2.
17. A communication system, characterized in that the communication system comprises a base station, a first user equipment and a second user equipment;
the base station is configured to allocate at least one group of first resource blocks of size S1 to the first user equipment and allocate at least one group of second resource blocks of size S2 to the second user equipment, and indicate the at least one group of first resource blocks of size S1 and the at least one group of second resource blocks of size S2 to the first user equipment and the second user equipment, respectively, where the first resource blocks are units of wireless resources used by the first user equipment for wireless communication, and the second resource blocks are units of wireless resources used by the second user equipment for wireless communication;
the first user equipment is configured to perform channel estimation according to the size S1 of the resource block indicated by the base station;
the second user equipment is configured to perform channel estimation according to the size S2 of the resource block indicated by the base station;
if the channel delay spread of the first user equipment is smaller than the channel delay spread of the second user equipment, the S1 is greater than the S2.
18. A computer readable storage medium storing a program which, when executed, implements the method of any of claims 1 to 7 or 15.
19. An apparatus for resource allocation, comprising:
hardware associated with executing program instructions, an
A computer readable storage medium storing the program, wherein the program when executed implements the method of any of claims 1-7 or 15.
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