WO2007131413A1 - An allocation method of time-frequency resources and the apparatus and wireless communication system thereof - Google Patents
An allocation method of time-frequency resources and the apparatus and wireless communication system thereof Download PDFInfo
- Publication number
- WO2007131413A1 WO2007131413A1 PCT/CN2007/001308 CN2007001308W WO2007131413A1 WO 2007131413 A1 WO2007131413 A1 WO 2007131413A1 CN 2007001308 W CN2007001308 W CN 2007001308W WO 2007131413 A1 WO2007131413 A1 WO 2007131413A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- time
- frequency
- resource block
- virtual resource
- physical resource
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
-
- 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
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Definitions
- Time-frequency resource allocation method device thereof and wireless communication system
- the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for time-frequency resource allocation, and a wireless communication system. Background technique
- Cellular wireless communication systems achieve frequency reuse by dividing a large service area into many smaller coverage areas to increase system capacity. Each small coverage area is called a cell.
- a simple resource with a multiplexing factor of one is allocated, different cells use the same frequency, and signals of cells operating at the same frequency interfere with each other.
- Cellular system design requirements ensure that interference between users within the cell is as small as possible, while inter-cell interference is as even as possible.
- Orthogonal Frequency Division Multiplexing (OFDM) technology divides a wideband channel into a number of orthogonal narrowband subchannels in the frequency domain, and high speed data streams are transmitted in parallel on each subchannel by serial-to-parallel conversion. Due to the narrowband characteristics of the subchannels, the multipath effects can be overcome, the intersymbol interference is greatly eliminated, and the orthogonality is satisfied due to the overlapping of the subchannels, so that the cross improves the spectrum utilization. At the same time, due to the development of digital signal processing and the introduction of fast discrete Fourier transform, the signal modulation and demodulation of OFDM systems have become very simple, which makes OFDM technology gradually become the core technology of mobile communication systems.
- OFDM Orthogonal Frequency Division Multiplexing
- the entire frequency band is divided into a series of physical resource blocks (PRBs), and each physical resource block includes consecutive subcarriers in M frequency domains and consecutive symbols in N time domains, and M is initially determined to be 25. Without considering information such as pilot and control, N takes the value 7, which is the number of symbols in one subframe.
- the size of a physical resource block is represented by ,, that is, the total number of time-frequency units occupied by physical resource blocks, and one time-frequency unit refers to one sub-carrier within one symbol time.
- the OFDM system supports two transmission modes: Localized Distribution and Distributed Transmission. Centralized transmission occupies consecutive subcarriers, and is dispersed Transmission takes up some scattered subcarriers for frequency diversity purposes.
- virtual resource block (VRB)
- a virtual resource block is represented by two parameters, the first one is the resource block size (Size); the second is the type (Type), that is, the virtual resource block is divided into a centralized virtual resource block (LVRB, Localized Virtual Resource Block) and There are two types of distributed virtual resource blocks (DVRBs).
- the centralized virtual resource blocks (LVRBs) are mapped to physical resource blocks in a centralized manner, and the decentralized virtual resource blocks (DVRBs) are mapped to physical resource blocks in a decentralized manner.
- the two transmissions are multiplexed in a frequency division manner.
- mapping virtual resource blocks to physical resource blocks is an important part of the design of cellular wireless communication systems of OFDM technology.
- an implementation scheme is:
- the set virtual resource block (LVRB) is equal in size to the physical resource block (PRB), and a centralized virtual resource block is directly mapped to a physical resource block.
- the distributed virtual resource block (DVRB) is equal in size to the LVRB and the PRB, and the number is represented by MN ⁇ N DPRB , that is, the resource finally allocated to the distributed transmission user is less than or equal to the number of resources that the system can distribute to the distributed transmission.
- Each DVRB is divided into N-secrets, each of which is mapped to a section of a DPRB resource, which is continuous in both the frequency domain and the time domain.
- the specific segmentation and mapping methods are as follows:
- DVRB of 0 occupies 0, the 1st, 2nd, 3rd, 4th, 5th subcarriers of the DPRB All 7 symbols, and the first 4 symbols of the 6th subcarrier; all 7 of the 0th, 1st, 2nd, 3rd, 4th, 5th subcarriers of the DPRB of the production 1, 2, 3 Symbol, and the first symbol of the sixth subcarrier;
- the last 3 symbols of the 6th subcarrier of the DPRB, all 7 symbols of the 7th, 8th, 9th, 10th, and 11th subcarriers, and the first 5 symbols of the 12th subcarrier; occupy j' The last 6 symbols of the 6th subcarrier of the DPRB, all 7 symbols of the 7th, 8th, 9th, 10th, and 11th subcarriers, and the first 5 symbols of the 12th subcarrier; The last 6 symbols of the 6th subcarrier of the DPRB of the household 3, all 7 symbols of the 7th, 8th, 9th, 10th, and 11th subcarriers, and the first 2 symbols of the 12th subcarrier;
- the last 5 symbols of the 12th subcarrier of the DPRB occupying _/ 3, all 7 symbols of the 13th, 14th, 15th, 16th, and 17th subcarriers, and the front of the 18th subcarrier 3 symbols.
- the three maps on the left correspond to three DVRBs, and the four graphs in the middle correspond to four DPRBs.
- the occupied resources the right picture corresponds to 12 PRBs, and the gray part indicates the PRB occupied by the centralized transmission.
- the time-frequency resource occupation method of the distributed transmission cannot simultaneously strengthen the inter-cell interference randomization; and because a part of the DVRB is mapped to a DPRB, the occupied frequency resources are continuous, and one PRB in the system occupies When the bandwidth is large, such as 25 subcarriers, the continuous frequency resource cannot represent the channel condition experienced by 25 subcarriers, so the frequency diversity gain is limited; and when a PRB occupies a small bandwidth, such as 12 subcarriers. A DVRB may occupy only the same number of symbols on each PRB, losing time diversity gain.
- Embodiments of the present invention provide a method for allocating time-frequency resources, a device thereof, and a wireless communication system, which utilize randomized time-frequency resource occupation mode to achieve randomization of inter-cell interference and obtain sufficient frequency diversity gain and time diversity gain. .
- An embodiment of the present invention provides a method for allocating a time-frequency resource, including:
- the entire time-frequency plane is divided into R equal-sized physical resource blocks, and each physical resource block includes consecutive sub-carriers in the frequency domain and consecutive symbols in the time domain, where R, ⁇ , and ⁇ are positive Integer
- a physical resource block refers to a physical resource block allocated to a distributed virtual resource block.
- An embodiment of the present invention provides a time-frequency resource allocation apparatus, configured to determine a location of a resource of each virtual resource block in a physical resource block, to allocate a time-frequency resource, where the virtual resource block includes a centralized virtual resource block and is dispersed.
- Virtual resource block; the device includes:
- a physical resource division unit configured to divide the entire time-frequency plane into R equal-sized physical resource blocks, where each physical resource block includes consecutive sub-carriers in the frequency domain and consecutive symbols in the time domain, where R , ⁇ and ⁇ are positive integers;
- a time-frequency pattern setting unit connected to the physical resource dividing unit, configured to set each cell a set of orthogonal time-frequency patterns and used to fill the entire time-frequency plane;
- the time-frequency resource allocation unit is respectively connected to the physical resource dividing unit and the time-frequency pattern setting unit, and is configured to allocate the physical resource block to the centralized virtual resource block or/and the distributed virtual resource block, wherein the time-frequency in the distributed transmission physical resource block A slice of a pattern or a time-frequency pattern is assigned to one scatter virtual resource block, and the scatter-transport physical resource block refers to a physical resource block allocated to a scatter virtual resource block.
- An embodiment of the present invention provides a wireless communication system, where the system includes a base station and a mobile station that communicates with the base station, where the base station includes:
- a time-frequency resource allocation device configured to determine a location of a resource of each virtual resource block in a physical resource block, where a location of the distributed virtual resource block in the physical resource block is allocated according to a time-frequency pattern;
- the base station is configured to notify the mobile station of time-frequency resource information of the location of the resource of each virtual resource block in the physical source block;
- the mobile station adjusts the time-frequency location for receiving the information according to the received time-frequency resource information of the resource of each virtual resource block in the physical source block.
- the entire time-frequency plane is divided into several equal-sized physical resource blocks, and each physical resource block includes M sub-carriers in the frequency domain and N consecutive symbols in the time domain. , wherein R, M, and N are both positive integers; fill the entire time-frequency plane with a set of orthogonal time-frequency patterns specific to the cell; allocate physical resource blocks to the centralized virtual resource blocks and/or the distributed virtual resource blocks; Fragments of a time-frequency pattern or a time-frequency pattern distributed in a distributed transmission physical resource block are allocated to one distributed virtual resource block, and the distributed transmission physical resource block refers to a physical resource block allocated to the distributed virtual resource block.
- the time-frequency resource multiplexing of the frequency division orthogonal multiplexing (OFDM) cellular radio communication system is realized, so that the system only has distributed transmission, distributed transmission and centralized transmission.
- Frequency division multiplexing can meet the average possible requirement of inter-cell interference, and at the same time, sufficient frequency diversity gain can be obtained by distributed transmission.
- FIG. 1 is a schematic diagram of a schematic diagram of mapping a distributed virtual resource block to a physical resource block in the prior art
- FIG. 2 is a flowchart of a method for allocating time-frequency resources according to an embodiment of the present invention
- 3 is a schematic diagram showing a distribution of a time-frequency pattern in a physical resource block in the embodiment shown in FIG. 2;
- FIG. 4 is a schematic diagram of mapping a distributed virtual resource block to a physical resource block by a time-frequency pattern in an embodiment provided in an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a time-frequency resource allocation apparatus according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a wireless communication system provided in an embodiment of the present invention. detailed description
- FIG. 2 is a flowchart of a method for allocating time-frequency resources according to an embodiment of the present invention.
- the time-frequency resource allocation method includes:
- Step S11 Divide the entire time-frequency plane into R equal-sized physical resource blocks, where each physical resource block includes M sub-carriers in the frequency domain and N consecutive symbols in the time domain, where R, M, and N Are positive integers;
- Step S12 Set a set of orthogonal time-frequency patterns for each cell, and fill the entire time-frequency plane with the same;
- Step S13 Allocating a physical resource block to a centralized virtual resource block or/and a distributed virtual resource block, wherein a time-frequency pattern or a fragment of a time-frequency pattern distributed in the distributed transmission physical resource block is allocated to a distributed virtual resource block.
- the distributed transport physical resource block refers to a physical resource block allocated to a distributed virtual resource block.
- information such as pilot and control is not considered in the following description, and only the design of the entire time-frequency plane for data transmission is considered.
- the corresponding position such as the first or first two symbols of a sub-frame, is used for the pilot and other information, and the design of the remaining positions remains unchanged.
- step S11 the entire time-frequency plane is divided into R equal-sized physical resource blocks from the frequency domain, and each physical resource block includes M sub-carriers in the frequency domain.
- the entire time-frequency plane includes consecutive symbols in N time domains.
- Use ⁇ to indicate the size of a physical resource block, that is, the number of time-frequency resources included in one physical resource block.
- set the sequence number of the R physical resource blocks to 0, 1, 2, ..., R- lo
- step S12 a set of orthogonal time-frequency patterns is set for the cell and used to fill the entire time-frequency plane.
- one time-frequency pattern refers to a set of time-frequency resources; two time-frequency patterns orthogonally mean that two time-frequency patterns do not include a common time-frequency resource.
- each time-frequency pattern is kxRxN (the time-frequency pattern size, that is, the number of time-frequency units occupied by one time-frequency pattern)
- the entire time-frequency plane has M/k orthogonal time-frequency patterns, where k is any divisor of M, and the sequence number is set to the time-frequency pattern, ), l, 2, ..., M/ Kl.
- Each sub-time-frequency pattern has a size of kxN and contains N sets of resources on the corresponding physical resource block.
- the N sets of resources are respectively located on N different symbols, and each of the symbols occupies k subcarriers, and the k subcarriers may be continuous or discontinuous, for example, may be equally spaced.
- time-frequency pattern design can be carried out according to the description of the schemes described in the various patents, such as the patent application number: 200610005696.2, 200610006600.4 or / and 200610002999.9.
- a time-frequency pattern is represented by one or more sequences ⁇ S ') ⁇ , and its specific meanings are mainly as follows: 1.
- s (o represents the s (o) of the first time unit in a certain physical resource block a frequency unit, where one time unit is one symbol or multiple adjacent symbols, one frequency unit is one subcarrier or multiple adjacent subcarriers; and two, s( ) represents a certain physical resource block, on the first frequency unit
- the s 'th time unit; s( ) represents the S 'th frequency unit in the first physical resource block within a certain time unit.
- each sub-time-frequency pattern of each time-frequency pattern is assigned a specific sequence of length N, the sequence number of which corresponds to N symbols, and the value of the sequence corresponds to a sub-carrier position in one physical resource block.
- N the sequence number of which corresponds to N symbols
- the value of the sequence corresponds to a sub-carrier position in one physical resource block.
- the right picture shows 12 physical resource blocks, in which different patterns Corresponding to the sub-time-frequency pattern of the corresponding pattern, the blank portion is Other time-frequency patterns,
- the time-frequency pattern fills up.
- Different cells can use the same time-frequency pattern group or different time-frequency pattern groups. When different time-frequency pattern groups designed in the above patents are used, randomization of interference between cells can be conveniently obtained.
- the physical resource block is allocated to the centralized virtual resource block or/and the distributed virtual resource block, wherein the time-frequency pattern or the fragment of the time-frequency pattern distributed in the distributed transmission physical resource block is allocated to one distributed virtual resource block.
- the distributed transport physical resource block refers to a physical resource block allocated to a distributed virtual resource block.
- a feasible approach, but not limited to this, is to sequentially allocate the portions of the time-frequency pattern that are not occupied by the centralized transmission to the distributed transmission virtual resource blocks. Specifically, when a segment of a time-frequency pattern is used as the last time-frequency pattern segment assigned to a virtual resource block, the next segment of the time-frequency pattern is allocated as the first time-frequency pattern segment of the next virtual resource block. .
- each of the distributed virtual resource blocks may be sequentially allocated a sub-time-frequency pattern that is not occupied by the centralized transmission, that is, all the sub-time-frequency patterns that can be allocated to the distributed virtual resource blocks are uniformly numbered, and the sub-times are distributed in a small number.
- the resource block preferentially assigns a sub-time-frequency pattern with a small serial number.
- the number of centralized virtual resource blocks in the system is the number of distributed virtual resource blocks.
- the virtual resource block size for example MxN
- the scattered virtual resource blocks of the ⁇ are preferentially assigned a sub-time-frequency pattern with a small serial number.
- R-g sub-time-frequency patterns in each time-frequency pattern can be allocated to the distributed virtual resource blocks.
- the virtual resource block preferentially assigns a sub-time-frequency pattern with a small serial number to the scattered virtual resource blocks with small serial numbers.
- the position of each sub-time-frequency pattern of each time-frequency pattern in the physical resource block can be according to the application number: 200610005696.2, 200610006600.4 or I and The method provided by the patent of 200610002999.9 is determined, and the specific determination process is detailed in the above-mentioned patents, and details are not described herein again. These methods ensure that there is little interference between any two time-frequency patterns or time-frequency pattern segments from different cells.
- the design of the time-frequency pattern remains unchanged, and the virtual resource block will be divided into a part of the time-frequency pattern of the time-frequency pattern, that is, the fragment of the time-frequency pattern, which ensures the original The interference randomization is still valid.
- time-frequency pattern design Another purpose of the time-frequency pattern design is to obtain frequency diversity gain and time diversity gain by rearranging the order of the time-frequency lattice points. Compared with the prior art, when the user occupies resources in units of time-frequency patterns or time-frequency pattern segments, it can be mapped to discontinuous frequency bands and different symbols, and the frequency diversity gain and the time diversity gain are sufficiently obtained.
- the time-frequency pattern of each cell is pre-designed and well known to base stations and users. Therefore, for the distributed transmission users, only need to know which sub-time-frequency patterns are included in each of the distributed virtual resource blocks, and then the mapping relationship between each virtual resource block and the physical resource block can be known, so as to know that each virtual resource block actually occupies The case of frequency resources.
- the following illustrates the mapping method of the scheme from the distributed virtual resource block to the physical resource block.
- the physical resource block of 10 is occupied by the centralized transmission.
- the sub-time-frequency pattern of 8,11 in the time-frequency pattern, the sub-time-frequency pattern of 2,5,8,11 in the time-frequency pattern of ⁇ 13,14,15,16,17,
- the occupied subcarriers are in the same pattern.
- the Arabic numerals on the right side of the decentralized virtual resource block and the physical resource block represent subcarrier numbers 0-24, and the Arab numerals on the right side of the time-frequency pattern represent sub-time-frequency pattern numbers 0-11.
- a time-frequency resource allocation device is further provided, and a schematic structural diagram of the device is shown in FIG. 5.
- the device is configured to determine a location of a resource of each virtual resource block in a physical resource block to allocate a time-frequency resource, where the virtual resource block includes a centralized virtual resource block and a distributed virtual resource block, where the device includes:
- the physical resource dividing unit 51 is configured to divide the entire time-frequency plane into R equal-sized physical resource blocks, where each physical resource block includes consecutive sub-carriers in the frequency domain and consecutive time domains.
- the symbol of R, ⁇ , and ⁇ is a positive integer;
- the time-frequency pattern setting unit 52 is connected to the physical resource dividing unit 51, and is configured to set a set of orthogonal time-frequency patterns for each cell, and fill in the same Full time-frequency plane;
- a time-frequency pattern setting unit sets a set of equal-sized and orthogonal time-frequency patterns for each cell, and determines a size of each time-frequency pattern as: kxRxN; the number of the time-frequency patterns For example, M/k, k is any divisor of M; the function of the time-frequency pattern setting unit is further: a time-frequency pattern can be formed by setting R equal-sized sub-time-frequency patterns, the R sub-time-frequency The time-frequency resources occupied by the patterns are respectively located in R different physical resource blocks, and each sub-time-frequency pattern occupies k sub-carriers on each symbol.
- Time-frequency resource allocation unit And the physical resource dividing unit 51 and the time-frequency pattern setting unit 52 are respectively connected to allocate the physical resource block to the centralized virtual resource block or/and the distributed virtual resource block, where the distributed resource block is distributed in the physical resource block.
- a fragment of a frequency pattern or a time-frequency pattern is allocated to a decentralized virtual resource block, which refers to a physical resource block allocated to a decentralized virtual resource block.
- the specific function of assigning the time-frequency pattern to the scatter virtual resource block may be: configured to allocate a sub-time-frequency pattern in the time-frequency pattern to the scatter virtual resource block, where the time-frequency resource occupied by the sub-time-frequency pattern is located in the allocation In the physical resource block for distributed transmission;
- the time-frequency pattern and the sequence number of the distributed virtual resource block are separately set, and the portions of the time-frequency pattern that are not occupied by the centralized transmission are sequentially allocated to the distributed virtual resource block by the serial number, and when a time-frequency pattern is used
- the next segment of the time-frequency pattern is allocated as the first time-frequency pattern segment of the next virtual resource block; the sub-time-frequency pattern can also be utilized
- the division simplification operation that is, the function of the resource allocation unit may be more specifically described as: respectively setting the sequence numbers of the distributed virtual resource blocks and the sub-time-frequency patterns, wherein the sub-time-frequency patterns are located in the physical resource blocks allocated to the distributed transmission, And the sub-time-frequency patterns are sequentially allocated to the distributed virtual resource blocks by serial number.
- an embodiment of the present invention further provides a wireless communication system, and a schematic structural diagram of the system is shown in FIG. 6.
- the system includes a base station 61 and a mobile station 62 that communicates with a base station, where the base station includes time-frequency resource allocation means 611 for determining a location of a resource of each virtual resource block in a physical resource block, wherein the virtual resource block is dispersed The location in the physical resource block is allocated according to the time-frequency pattern; and the base station is configured to notify the mobile station of time-frequency resource information of the location of the resource of each virtual resource block in the physical source block;
- the mobile station 62 adjusts a time-frequency location for receiving information according to the received time-frequency resource information of the resource of each virtual resource block in the physical source block.
- the time-frequency resource allocation device 611 includes: a physical resource dividing unit 6111, a time-frequency pattern setting unit 6112, and a time-frequency resource allocating unit 6113, wherein functions and functions of the respective units are the same as those of the unit in FIG. For details, refer to the above, and details are not described herein again.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Description
时频资源的分配方法及其装置和无线通信系统
本申请要求于 2006 年 04 月 28 日提交中国专利局、 申请号为 200610077596.0,发明名称为 "时频资源的分配方法及其装置和无线通信系 统,' 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术械
本发明涉及通信技术领域, 特别涉及时频资源的分配方法及其装置和 无线通信系统。 背景技术
蜂窝无线通信系统通过把一个大的服务区划分成许多较小的覆盖区域 而实现频率重用,以提高系统容量。每一个小覆盖区被称为一个小区( cell )。 采用简单的复用因子为一的频率资源分配时, 不同小区采用相同的频率, 因而工作于同一频率的小区的信号之间会相互干扰。 蜂窝系统的设计要求 要保证小区内用户间的干扰尽可能小 , 同时小区间干扰尽可能平均化。
正交频分复用 ( OFDM, orthogonal frequency division multiplexing )技 术将宽带信道在频域内分成若干正交的窄带子信道, 高速数据流通过串并 变换在各个子信道上并行传输。 由于子信道的窄带特性, 可以克服多径影 响, 大大消除符号间的干扰, 同时由于子信道间的频措相互重叠的情况下 仍满足正交特性, 因而叉提高了频谱利用率。 同时, 由于数字信号处理的 发展以及快速离散傅立叶变换的引入, OFDM 系统的信号调制和解调也变 得非常简单, 这些都使得 OFDM技术逐渐成为移动通信系统的核心技术。
在现有技术中, 对于下行数据复用提出了如下解决方案:
将整个频带划分为一系列物理资源块(PRB ), 每个物理资源块包括 M 个频域上连续的子载波和 N个时域上连续的符号, M初步确定为 25。 在不 考虑导频和控制等信息的情况下, N取值 7, 为一个子帧中的符号数。 一个 物理资源块的大小 用 ΜχΝ表示, ΜχΝ即物理资源块占用的时频单元 总个数, 一个时频单元指一个符号时间内的一个子载波。
OFDM系统支持两种传输方式: 集中传输(Localized Distribution )和 分散传输( Distributed Transmission )。 集中传输占用连续的子载波, 而分散
传输则占用一些分散的子载波以达到频率分集的目的。 为了描述方便, 引 入虚拟资源块(VRB, Virtual Resource Block ) 的概念。 一个虚拟资源块由 两个参数表征, 第一个是资源块大小(Size ); 第二个是类型 (Type ), 即把 虛拟资源块分为集中虚拟资源块(LVRB, Localized Virtual Resource Block ) 和分散虚拟资源块 (DVRB, Distributed Virtual Resource Block)两种。
所述集中虚拟资源块(LVRB ) 以集中的方式映射到物理资源块上, 分 散虚拟资源块(DVRB )则以分散的方式映射到物理资源块上。 当一个子帧 内同时存在两种传输时, 两种传输以频分的方式复用在一起。
将虚拟资源块映射到物理资源块的方案是 OFDM技术的蜂窝无线通信 系统设计的重要内容, 目前, 一种实现的方案为:
设置集中虚拟资源块(LVRB )与物理资源块(PRB ) 大小相等, 把一 个集中虚拟资源块直接映射到一个物理资源块上。
用^½5表示 PRB的个数, 用 N ras表示 LVRB的个数, 由于 LVRB到 PRB 的映射——对应, 所以 N ras的值与用于集中传输的 PRB个数相等。 其余的 PRB可以用于分散传输, 用 DPRB表示, 个数是 N = N
设置分散虛拟资源块(DVRB )与 LVRB及 PRB大小相等, 个数用 表示, MN画≤NDPRB , 即最终分配给分散传输用户的资源少于或等于系统 可以分给分散传输的资源数量。
把每个 DVRB分割成 N隱份,每一份映射到一个 DPRB的一段资源上, 该段资源在频域和时域均连续。 具体的分割和映射方法如下:
给^層个0 1^设置序号 = 0,1 -1
同时给 N。層个 DPRB设置序号 j = 0, l, 2, 、N誦 - 1
把一个 DVRB分割成 N。 份, 其中第份映射到第 7·个 DPRB上。 那么第 个 DVRB的第 7·份大小由以下公式给出: 当 _/
当·≠ 时, su = ^DVRB
DPRB
其中 剛表示一个 DVRB的大小
序号较小的 DVRB优先映射。
计算第个 DVRB的第;部分在第个 DPRB上的起始位置,需要累加第 0个 到第 ζ·-1个 DVRB的第部分的大小。
下面举例说明现有技术方案中 DVRB到 DPRB的映射:
一个 5M带宽的系统,在一个子帧内有 12个 PRB,其中 8个用于集中传输, 因此 Λ^™=4。 设有 3个 DVRB将被映射到物理信道中。
不考虑导频和控制等信息, Sw^ = S^=MxN=25><7=l75。 所以
175
当_/ =埘, ¾. = 175 - (4-1) 46 175
当 _/·≠ /时, S . = : 43,
4
其中, ζ· = 0,1,¾_/ = 0,1,2,3 所以 =0的 DVRB 占用 =0的 DPRB的第 0, 第 1、 第 2、 第 3、 第 4、 第 5个 子载波的全部 7个符号, 以及第 6个子载波的前 4个符号; 占用产1 ,产 2, 3 的 DPRB的第 0, 第 1、 第 2、 第 3、 第 4、 第 5个子载波的全部 7个符号, 以及 第 6个子载波的第 1个符号;
的 DPRB的第 6个子载波的后 3个符号, 第 7、 第 8、 第 9、 第 10、 第 11个子载波的全部 7个符号, 以及第 12个子载波的前 5个符号; 占用 j'=l的 DPRB的第 6个子载波的后 6个符号, 第 7、 第 8、 第 9、 第 10、 第 11 个子载波的全部 7个符号, 以及第 12个子载波的前 5个符号; 占用户2,户 3的 DPRB的第 6个子载波的后 6个符号, 第 7、 第 8、 第 9、 第 10、 第 11个子载波 的全部 7个符号, 以及第 12个子载波的前 2个符号;
=2的 DVRB 占用 j'=0, 的 DPRB的第 12个子载波的后 2个符号,第 13、 第 14、 第 15、 第 16、 第 17个子载波的全部 7个符号, 以及第 18个子载波的前 6个符号; 占用 的 DPRB的第 12个子载波的后 5个符号,第 13、第 14、第 15、 第 16、 第 17个子载波的全部 7个符号, 以及第 18个子载波的前 6个符号; 占 用 _/=3的 DPRB的第 12个子载波的后 5个符号, 第 13、 第 14、 第 15、 第 16、 第 17个子载波的全部 7个符号, 以及第 18个子载波的前 3个符号。
如图 1所示, 左边的 3个图对应 3个 DVRB, 中间的 4个图对应 4个 DPRB,
其中, 占用的资源, 右斜线表示 =1的 DVRB占用的 资源,
占用的资源; 右边的图对应 12个 PRB, 其中 灰色的部分表示被集中传输占用的 PRB。
由上述公开的技术方案可知,该分散传输的时频资源占用方法不能同时 加强小区间干扰随机化; 并且由于一个 DVRB映射到一个 DPRB的部分占 用的频率资源是连续的, 当系统中一个 PRB占用带宽较大, 比如 25个子载 波时, 这段连续的频率资源不能艮好地代表 25个子载波经历的信道情况, 所以频率分集增益受限;而当一个 PRB占用带宽较小,比如 12个子载波时, 一个 DVRB可能在每个 PRB上只占用相同的几个符号,损失时间分集增益。 发明内容
本发明实施例提供一种时频资源的分配方法及其装置和无线通信系 统, 以利用分散传输的时频资源占用方式来实现小区间干扰的随机化并获 得充分的频率分集增益以及时间分集增益。
本发明实施例提供一种时频资源的分配方法, 包括:
将整个时频平面划分为 R个大小相等的物理资源块, 每个物理资源块 包含 Μ个频域上连续的子载波和 Ν个时域上连续的符号 , 其中 R, Μ和 Ν 均为正整数;
为小区设置一组正交的时频图案;
将物理资源块分配给集中虚拟资源块或 /和分散虚拟资源块, 其中将分 布在分散传输物理资源块中的时频图案或者时频图案的片断分配给一个分 散虚拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资源块的物 理资源块。
本发明实施例提供一种时频资源的分配装置, 用于确定每个虚拟资源 块的资源在物理资源块中的位置, 以分配时频资源, 所述虚拟资源块包括 集中虚拟资源块和分散虚拟资源块; 该装置包括:
物理资源划分单元, 用于将整个时频平面划分为 R个大小相等的物理 资源块, 每个物理资源块包含 Μ个频域上连续的子载波和 Ν个时域上连续 的符号, 其中 R, Μ和 Ν均为正整数;
时频图案设置单元, 与物理资源划分单元相连, 用于为每个小区设置
一组正交的时频图案, 并用其填满整个时频平面;
时频资源分配单元, 与物理资源划分单元和时频图案设置单元分别相 连, 用于分配物理资源块给集中虛拟资源块或 /和分散虚拟资源块, 其中在 分散传输物理资源块中的时频图案或者时频图案的片断被分配给一个分散 虚拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资源块的物理 资源块。
本发明实施例提供一种无线通信系统, 所述系统包括基站以及与基站 通信的移动台, 其中所述基站包括:
时频资源分配装置, 用于确定每个虚拟资源块的资源在物理资源块中 的位置, 其中分散虚拟资源块在物理资源块中的位置才艮据时频图案进行分 配;
所述基站用于将每个虚拟资源块的资源在物理源块中位置的时频资源 信息通知移动台;
所述移动台, 才艮据所接收到的每个虚拟资源块的资源在物理源块中位 置的时频资源信息, 调整用于接收信息的时频位置。
本发明实施例提供的技术方案中,将整个时频平面划分为若干个大小相 等的物理资源块, 每个物理资源块包含 M个频域上连续的子载波和 N个时 域上连续的符号, 其中 R, M和 N均为正整数; 用小区特定的一组正交的 时频图案填满整个时频平面; 将物理资源块分配给集中虚拟资源块和 /或分 散虚拟资源块; 其中将分布在分散传输物理资源块中的时频图案或者时频 图案的片断分配给一个分散虚拟资源块, 所述分散传输物理资源块是指分 配给分散虚拟资源块的物理资源块。 通过设计虚拟资源块到物理资源块的 映射关系, 来实现频分正交复用( OFDM )蜂窝无线通信系统的时频资源复 用, 使得系统中无论仅有分散传输, 还是分散传输和集中传输频分复用, 都能满足小区间干扰尽可能平均的要求, 同时分散传输可以获得充分的频 率分集增益。 附图说明
图 1是现有技术中将分散虚拟资源块映射到物理资源块的原理示意图; 图 2是本发明实施例中提供的时频资源的分配方法的流程图;
图 3是图 2所示的实施例中一个时频图案在物理资源块中分布情况的 示意图;
图 4是本发明实施例中提供的实施例中通过时频图案将分散虚拟资源 块映射到物理资源块的示意图;
图 5是本发明实施例中提供的时频资源的分配装置的结构示意图; 图 6是本发明实施例中提供的无线通信系统的结构示意图。 具体实施方式
为了便于理解本发明的原理、 特性和优点, 下面结合附图对本发明做 进一步的说明。
图 2所示为本发明实施例中提供的时频资源分配方法的流程图。 所述时 频资源分配方法包括:
步骤 S11: 将整个时频平面划分为 R个大小相等的物理资源块,每个物 理资源块包含 M个频域上连续的子载波和 N个时域上连续的符号,其中 R, M和 N均为正整数;
步骤 S12: 为每个小区设置一组正交的时频图案, 并用其填满整个时频 平面;
步骤 S13: 将物理资源块分配给集中虚拟资源块或 /和分散虚拟资源块, 其中将分布在分散传输物理资源块中的时频图案或者时频图案的片断分配 给一个分散虚拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资 源块的物理资源块。
为了筒化描述, 在以下的描述中不考虑导频和控制等信息, 只考虑整 个时频平面用于数据传输时的设计。 一旦系统中需要设置导频和控制等信 息, 则相应位置, 比如一个子帧的第一个或前两个符号用于导频等信息, 其余位置的设计保持不变。
在步骤 S11 中, 将整个时频平面从频域上划分为 R个大小相等的物理 资源块, 每个物理资源块包括 M个频域上连续的子载波。 整个时频平面包 括 N个时域上连续的符号。用 ΜχΝ表示一个物理资源块的大小, 即一个物 理资源块包括的时频资源数量。 并给 R个物理资源块设置序号 =0,1,2,..., R- l o
在步骤 S12 中, 为小区设置一组正交的时频图案, 并用其填满整个时 频平面。 其中, 一个时频图案指的是一组时频资源的集合; 两个时频图案 正交指两个时频图案不包含公共的时频资源。
为了叙述方便, 下面以每个时频图案的大小为 kxRxN (时频图案大小 即一个时频图案占用的时频单元的个数) 的情况为例进行说明。 此情况下, 整个时频平面共有 M/k个正交的时频图案, 其中 k是 M的任意一个约数, 并给时频图案设置序号, ),l,2,...,M/k-l。
把一个时频图案划分为大小相等的 R 个子时频图案, 并设置序号 户 0,1,2,..., R-1 , 第 。个子时频图案只包含第 个物理资源块上的时频资源, Jq=0,1,2,...,R-1。每个子时频图案大小为 kxN, 包含对应的物理资源块上的 N组资源。 这 N组资源分别位于 N个不同的符号上, 且每个符号上占用 k 个子载波, 这 k个子载波可以连续也可以不连续, 例如可以等间隔分布。
事实上, 可以根据多个专利所述方案的描述进行时频图案设计, 比如 申请号为: 200610005696.2、 200610006600.4或 /和 200610002999.9 的专利。 一个时频图案由一个或多个序列 {S ')}表示, 其具体含义主要有以下几种: 一、 s(o表示某个物理资源块中, 第 个时间单元上的第 s(o个频率单元, 其中一个时间单元为一个符号或多个相邻符号 , 一个频率单元为一个子载 波或多个相邻子载波; 二、 s( )表示某个物理资源块中, 第 个频率单元上 的第 s ')个时间单元; 三、 s( )表示某个时间单元内, 第 个物理资源块中 的第 S ')个频率单元。 当不同小区的时频图案组分别由不同序列组生成, 且 序列组之间具有较好的相关性时, 时频图案间可以获得干扰随机化。 具体 的序列设计过程详见所述专利, 在此不再赘述。
下面以时频图案大小为 kxRxN的情况为例作进一步说明。给每个时频 图案的每个子时频图案分配一个特定的长度为 N的序列, 该序列的序号对 应 N个符号, 该序列的值对应一个物理资源块中的子载波位置。 如图 3所 示,为一个时频图案在物理资源块中分布情况的实施例。其中取参数 M=25, N=7, R=12, k=5。 图 2中左边的图表示一个时频图案及其 12个子时频图案, 其中不同的花纹代表该时频图案中不同的子时频图案; 右边的图表示 12个 物理资源块, 其中不同的花紋对应于相应花紋的子时频图案, 空白部分被
其他的时频图案,
的时频图案填满。 不同小区可以釆用相 同的时频图案组也可以采用不同的时频图案组。 当采用上述专利中设计的 不同时频图案组时, 可以方便地获得小区间的干扰随机化。
在步骤 S13中, 将物理资源块分配给集中虚拟资源块或 /和分散虚拟资 源块, 其中将分布在分散传输物理资源块中的时频图案或者时频图案的片 断分配给一个分散虚拟资源块, 所述分散传输物理资源块指的是分配给分 散虚拟资源块的物理资源块。 一种可行的做法, 但不限于这种做法, 是把 时频图案中未被集中传输占用的部分顺序地分配给分散传输虚拟资源块。 特别地, 当一个时频图案的一个片断作为分配给一个虚拟资源块的最后一 个时频图案片断时, 分配该时频图案的下一片断作为下一个虚拟资源块的 第一个时频图案片断。
具体实施过程中, 可以给每个分散虚拟资源块顺序分配未被集中传输 占用的子时频图案, 即给所有可分配给分散虚拟资源块的子时频图案统一 编号, 给序号小的分散虚拟资源块优先分配序号小的子时频图案。
设某一时间, 系统中集中虚拟资源块的个数为 分散虚拟资源块的个 数为 Ρ。 给定虚拟资源块大小, 例如为 MxN, 则尸+g R。 给分散虚拟资源 块编号, =0,l,2,...,P-l。
当只有分散传输,即 β=0时,给所有的 个子时频图案统一编号, 例如原来的第 i0个时频图案的第 。个子时频图案的统一编号为 z = iQR + j0 , 其中 0 =0,1,2, .. " ^-l , j0 =0,1,2,..., R-l , Ζ =0,1,2,· · ·,
RM / k - l . 然后按照序号将子时频图案顺序地分配给虚拟资源块, 给序号
Ί、的分散虚拟资源块优先分配序号小的子时频图案。
当既有集中传输又有分散传输, 即^≠0时, 有 β个物理资源块用于集 中传输, 则每个时频图案中有 R-g个子时频图案可以分配给分散虚拟资源 块。 给这些可以分配给分散传输的 个子时频图案统一编号, z =0,1,2,..., (R - Q)M /k - \ ,然后按照序号将子时频图案顺序地分配给虛拟 资源块, 给序号小的分散虚拟资源块优先分配序号小的子时频图案。
按照以上所述方法, 每个时频图案的每个子时频图案在物理资源块中 的位置可以 据申请号为: 200610005696.2、 200610006600.4或 I和
200610002999.9的专利所提供的方法来确定,具体的确定过程详见上述所公 开的专利, 在此不再赘述。 这些方法保证了来自不同小区的任意两个时频 图案或时频图案片断之间干扰很小。 当集中传输占用了一部分物理资源块 时, 时频图案的设计保持不变, 虛拟资源块将分得时频图案的一部分子时 频图案, 即分得时频图案的片断, 这种做法保证原来的干扰随机化仍然有 效。
时频图案设计的另一个目的, 是通过对时频格点顺序的重新排列, 获 取频率分集增益和时间分集增益。 与现有技术相比, 当用户以时频图案或 时频图案片断为单位占用资源时, 可以映射到不连续的频段和不同符号上, 充分地获得频率分集增益和时间分集增益。
每个小区的时频图案是预先设计好的, 是基站和用户所共知的。 因此 对于分散传输用户, 只需要知道每个分散虚拟资源块包含哪些子时频图案, 即可得知每个虚拟资源块到物理资源块的映射关系, 从而得知每个虚拟资 源块实际占用时频资源的情况。
下面举例说明本方案从分散虚拟资源块到物理资源块的映射方法。
一个 5M带宽的系统中,在一个子帧内有 12个物理资源块,其中 8个用于 集中传输, 有 3个分散虚拟资源块将被映射到物理信道中。 仍然取 M=25, N=7。
根据上述条件, R=12, =3, Q=8„ 沿用现有技术一所举例子中集中传输 占用的物理资源块位置, 得到 j = 0 ,1 , 3 , 4 , 6 , 7 , 9 ,10 的物理资源块被集 中传输占用。
这里取 1的情况为例进行说明。 由于有 8个物理资源块被集中传输占 用,所以每个时频图案中只有 4个子时频图案, 即 = 2,5,8,11的子时频图案会 被分配给分散虚拟资源块, 共有 4x25 = 100个这样的子时频图案。 然后顺序 地 4巴每 25个子时频图案分配给一个虚拟资源块。 即:
中产 2,5,8的子时频图案。
如图 4所示, 为7=0的分散虚拟资源块的时频资源占用情况, 图中的例 子采用了一种特殊的时频图案, 即每个子时频图案在物理资源块中不同符 号上占用的子载波位置相同的图案。 图 3中左边的图表示/ ?=0的分散虚拟资 源块, 中间的 7个图表示分配给该虚拟资源块的 7个时频图案, 右边的图给 出了 12个物理资源块中的 3个物理资源块; 图中具有各种花紋的部分表示分 配给 =0的分散虛拟资源块使用, 灰色部分表示分配给集中传输的使用, 白 色部分表示分配给其他分散虚拟资源块使用或者未被分配。 分散虚拟资源 块和物理资源块右边的阿拉伯数字代表子载波编号 0-24,时频图案右边的阿 拉伯数字代表子时频图案编号 0-11。
另外, 本发明实施例中还提供一种时频资源的分配装置, 所述装置的 结构示意图详见图 5。所述装置用于确定每个虛拟资源块的资源在物理资源 块中的位置以分配时频资源, 所述虚拟资源块包括集中虚拟资源块和分散 虚拟资源块; 其中, 所述装置包括:
物理资源划分单元 51、 时频图案设置单元 52和时频资源分配单元 53。 其中, 所述物理资源划分单元 51 , 用于将整个时频平面划分为 R个大小相 等的物理资源块, 每个物理资源块包含 Μ个频域上连续的子载波和 Ν个时 域上连续的符号, 其中 R, Μ和 Ν均为正整数; 所述时频图案设置单元 52, 与物理资源划分单元 51相连, 用于为每个小区设置一组正交的时频图案, 并用其填满整个时频平面;
具体实施例中, 一种时频图案设置单元为每个小区设置一组大小相等 且正交的时频图案, 并确定每个时频图案的大小为: kxRxN; 所述时频图 案的个数为: M/k, k是 M的任意一个约数; 该时频图案设置单元的功能 进一步为: 可以通过设置 R个大小相等的子时频图案构成一个时频图案, 所述 R个子时频图案占用的时频资源分别位于 R个不同的物理资源块中, 且每个子时频图案在每个符号上占用 k个子载波。 所述时频资源分配单元
53, 与物理资源划分单元 51和时频图案设置单元 52分别相连, 用于将物 理资源块分配给集中虚拟资源块或 /和分散虚拟资源块, 其中将分布在分散 传输物理资源块中的时频图案或者时频图案的片断分配给一个分散虚拟资 源块, 所述分散传输物理资源块指的是分配给分散虚拟资源块的物理资源 块。 其中将时频图案分配给分散虚拟资源块的具体功能可以是: 用于将时 频图案中的子时频图案分配给分散虚拟资源块, 其中所述子时频图案占用 的时频资源位于分配给分散传输的物理资源块中;
更具体地说, 分别设置时频图案和分散虚拟资源块的序号, 并将所述 时频图案中未被集中传输占用的部分按序号顺序地分配给分散虚拟资源 块, 并且当一个时频图案的一个片断作为分配给一个虚拟资源块的最后一 个时频图案片断时, 分配该时频图案的下一片断作为下一个虚拟资源块的 第一个时频图案片断; 还可以利用子时频图案的划分简化操作, 即该资源 分配单元的功能可以更具体地描述为 , 分别设置分散虛拟资源块和子时频 图案的序号, 其中所述子时频图案位于分配给分散传输的物理资源块中, 并将所述子时频图案按序号顺序地分配给分散虚拟资源块。
以上所述装置的各个单元的实现功能请参见上述方法的具体实现过 程, 在此不再赘述。
另外, 本发明实施例又提供一种无线通信系统, 所述系统的结构示意 图详见图 6。 所述系统包括基站 61以及与基站通信的移动台 62, 其中所述 基站包括时频资源分配装置 611,用于确定每个虚拟资源块的资源在物理资 源块中的位置, 其中分散虚拟资源块在物理资源块中的位置根据时频图案 进行分配; 并且, 所述基站用于将每个虚拟资源块的资源在物理源块中位 置的时频资源信息通知移动台;
所述移动台 62, 根据所接收到的每个虚拟资源块的资源在物理源块中 位置的时频资源信息, 调整用于接收信息的时频位置。
所述时频资源分配装置 611 包括: 物理资源划分单元 6111、 时频图案 设置单元 6112和时频资源分配单元 6113 , 其中, 各个单元的功能和作用与 图 5中所述单元的功能和作用相同, 具体参见上述, 在此不再赘述。
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领域的
普通技术人员来说, 在不脱离本发明原理的前提下, 还可以做出若干改进 和润饰, 这些改进和润饰也应视为本发明的保护范围。
Claims
1、 一种时频资源的分配方法, 其特征在于, 包括:
将整个时频平面划分为 R个大小相等的物理资源块, 每个物理资源块 均为正整数;
为小区设置一组正交的时频图案;
将物理资源块分配给集中虚拟资源块或 /和分散虚拟资源块, 其中将分 布在分散传输物理资源块中的时频图案或者时频图案的片断分配给一个分 散虚拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资源块的物 理资源块。
2、 根据权利要求 1所述的分配方法, 其特征在于, 所述为每个小区设 置一组正交的时频图案, 所述每个时频图案的规格为: kxRxN; 所述时频 图案的个数为: M/k, k是 M的任意一个约数。
3、 根据权利要求 2所述的分配方法, 其特征在于, 设置 R个大小相等 的子时频图案构成一个时频图案, 所述 R个子时频图案占用的时频资源分 别位于 R个不同的物理资源块中。
4、 根据权利要求 3所述的分配方法, 其特征在于, 所述子时频图案在 一个符号上占用 k个子载波。
5、 根据权利要求 1所述的分配方法, 其特征在于, 所述为不同小区设 置的时频图案相同或不相同。
6、 根据权利要求 1所述的分配方法, 其特征在于, 所述将物理资源块 分配给集中虛拟资源块或 /和分散虚拟资源块具体包括:
将物理资源块全部分配给集中虚拟资源块或者全部分配给分散虚拟资 源块, 或者
将一部分物理资源块分配给集中虚拟资源块, 将其余物理资源块分配 给分散虚拟资源块。
7、 根据权利要求 3或 4所述的分配方法, 其特征在于, 将时频图案中 的子时频图案分配给分散虚拟资源块, 其中所述子时频图案占用的时频资 源位于分配给分散传输的物理资源块中。
8、 根据权利要求 1所述的分配方法, 其特征在于, 所迷将时频图案或 者时频图案的片断分配给分散虚拟资源块的具体过程包括:
分别对时频图案和 /或时频图案的片断以及分散虚拟资源块排序, 并将 未被集中传输占用的所述时频图案或者时频图案的片断顺序地分配给分散 虚拟资源块。
9、 根据权利要求 8 所述的分配方法, 其特征在于, 所述将时频图案或 者时频图案的片断分配给分散虚拟资源块的具体过程包括:
分别对分散虚拟资源块和子时频图案排序 , 其中所述子时频图案位于 分配给分散传输的物理资源块中; 并将所述子时频图案顺序地分配给分散 虚拟资源块。
10、 根据权利要求 1所述的分配方法, 其特征在于, 所述方法还包括: 将一个或多个虛拟资源块分配给一种信道或者一个用户使用。
11、一种时频资源的分配装置,用于确定每个虚拟资源块的资源在物理 资源块中的位置, 以分配时频资源, 所述虚拟资源块包括集中虚拟资源块 和分散虚拟资源块; 其特征在于, 该装置包括:
物理资源划分单元, 用于将整个时频平面划分为 R个大小相等的物理 资源块, 每个物理资源块包含 M个频域上连续的子载波和 N个时域上连续 的符号, 其中 R, M和 N均为正整数;
时频图案设置单元, 与物理资源划分单元相连, 用于为每个小区设置 一组正交的时频图案, 并用其填满整个时频平面;
时频资源分配单元, 与物理资源划分单元和时频图案设置单元分别相 连, 用于分配物理资源块给集中虚拟资源块或 /和分散虚拟资源块, 其中在 分散传输物理资源块中的时频图案或者时频图案的片断被分配给一个分散 虚拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资源块的物理 资源块。
12、 根据权利要求 11所述时频资源分配装置, 其特征在于, 所述时频 图案设置单元为每个小区设置的一组正交的时频图案中每个时频图案的规 格为: kxRxN; 所述时频图案的个数为: M/k, k是 M的任意一个约数。
13、 根据权利要求 12所述时频资源分配装置, 其特征在于, 所述时频
图案设置单元设置的一組时频图案包括 R个大小相等的子时频图案,所述 R 个子时频图案占用的时频资源分別位于 R个不同的物理资源块中, 且每个 子时频图案在每个符号上占用 k个子载波。
14、根据权利要求 11至 13任意一项所述时频资源分配装置,其特征在 于, 所述时频资源分配单元将时频图案中的子时频图案分配给分散虚拟资 源块, 其中所述子时频图案占用的时频资源位于分配给分散传输的物理资 源块中。
15、 根据权利要求 11所述时频资源分配装置, 其特征在于, 所述时频 资源分配单元将时频图案分配给分散虚拟资源块, 具体用于分别对时频图 案和分散虚拟资源块排序, 并将未被集中传输占用的所述时频图案或者时 频图案的片断顺序地分配给分散虚拟资源块。
16、 根据权利要求 15所述时频资源分配装置, 其特征在于, 所述时频 资源分配单元将时频图案分配给分散虚拟资源块, 分别对分散虚拟资源块 和子时频图案排序, 其中所述子时频图案位于分配给分散传输的物理资源 块中; 并将所述子时频图案顺序地分配给分散虚拟资源块。
17、 一种无线通信系统, 其特征在于, 所述系统包括基站以及与基站 通信的移动台, 其中所述基站包括:
时频资源分配装置, 用于确定每个虚拟资源块的资源在物理资源块中 的位置, 其中分散虚拟资源块在物理资源块中的位置才 据时频图案进行分 配;
所述基站用于将每个虚拟资源块的资源在物理源块中位置的时频资源 信息通知移动台;
所述移动台, 根据所接收到的每个虚拟资源块的资源在物理源块中位 置的时频资源信息, 调整用于接收信息的时频位置。
18、 根据权利要求 17所述无线通信系统, 其特征在于, 所述时频资源 分配装置包括:
物理资源划分单元, 用于将时频平面划分为 R个大小相等的物理资源 块, 每个物理资源块包括 M个频域上连续的子载波和 N个时域上连续的符 号,其中 R, M和 N均为正整数;
时频图案设置单元, 与物理资源划分单元相连, 根据时频资源为每个 小区设置一组正交的时频图案, 并用其填满整个时频平面;
时频资源分配单元, 与物理资源划分单元和时频图案设置单元分别相 连, 将物理资源块分配给集中虚拟资源块或 /和分散虚拟资源块, 其中在分 散传输物理资源块中的时频图案或者时频图案的片断被分配给一个分散虚 拟资源块, 所述分散传输物理资源块是指分配给分散虚拟资源块的物理资 源块。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610077596.0 | 2006-04-28 | ||
| CNA2006100775960A CN101064706A (zh) | 2006-04-28 | 2006-04-28 | 时频资源的分配方法及其装置和无线通信系统 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007131413A1 true WO2007131413A1 (en) | 2007-11-22 |
Family
ID=38693533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/001308 Ceased WO2007131413A1 (en) | 2006-04-28 | 2007-04-20 | An allocation method of time-frequency resources and the apparatus and wireless communication system thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN101064706A (zh) |
| WO (1) | WO2007131413A1 (zh) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2457242A (en) * | 2008-02-05 | 2009-08-12 | Nec Corp | Resource allocation in a communication system |
| CN102726109A (zh) * | 2010-01-26 | 2012-10-10 | Lg电子株式会社 | 在无线通信系统中分配资源的方法和设备 |
| RU2501191C2 (ru) * | 2008-01-04 | 2013-12-10 | Панасоник Корпорэйшн | Способ компоновки каналов и устройство базовой станции для беспроводной связи |
| EP2352267A4 (en) * | 2008-11-06 | 2014-02-12 | Zte Corp | Method for mapping resource cells |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426268B (zh) * | 2007-11-02 | 2010-08-25 | 大唐移动通信设备有限公司 | 导频资源分配方法、系统和设备 |
| ES2524668T3 (es) * | 2007-11-07 | 2014-12-10 | Apple Inc. | Procedimientos y sistemas para canalización |
| DK2890201T3 (en) * | 2007-12-10 | 2016-11-28 | ERICSSON TELEFON AB L M (publ) | Improved planning in a cellular system |
| CN101540625B (zh) * | 2008-03-21 | 2012-12-19 | 电信科学技术研究院 | 信号接收检测方法、移动终端、信号发送方法和设备 |
| CN101605117B (zh) * | 2008-06-13 | 2012-09-05 | 中兴通讯股份有限公司 | 导频分配方法及系统 |
| CN101778343B (zh) * | 2009-01-14 | 2014-03-12 | 中兴通讯股份有限公司 | 长期演进系统中mbms的物理资源块的设置方法与装置 |
| CN102088309B (zh) * | 2009-12-04 | 2014-09-10 | 重庆无线绿洲通信技术有限公司 | 用于估计信道质量的参考信号生成方法及装置 |
| CN102149202B (zh) * | 2010-02-10 | 2014-10-29 | 电信科学技术研究院 | 一种上行反馈资源分配方法和设备 |
| CN103781081B (zh) * | 2014-02-28 | 2017-05-24 | 清华大学 | 基于机会共享的无线虚拟化资源分配方法 |
| WO2016070415A1 (en) * | 2014-11-07 | 2016-05-12 | Mediatek Singapore Pte. Ltd. | Methods for resource allocation |
| CN110430612B (zh) * | 2016-09-19 | 2021-10-29 | 上海朗帛通信技术有限公司 | 一种ue、基站中的支持发射功率调整的方法和装置 |
| CN115941563B (zh) * | 2023-03-14 | 2023-05-02 | 湖南智芯微科技有限公司 | 集成多指挥平台信息的任务监测方法及装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728695A (zh) * | 2004-07-27 | 2006-02-01 | 华为技术有限公司 | 一种通信系统时频资源的分配方法 |
-
2006
- 2006-04-28 CN CNA2006100775960A patent/CN101064706A/zh active Pending
-
2007
- 2007-04-20 WO PCT/CN2007/001308 patent/WO2007131413A1/zh not_active Ceased
- 2007-04-20 CN CNA2007800134273A patent/CN101421947A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728695A (zh) * | 2004-07-27 | 2006-02-01 | 华为技术有限公司 | 一种通信系统时频资源的分配方法 |
Non-Patent Citations (1)
| Title |
|---|
| SHEN J.: "THE CORE TECHNICS OF 3GPP LTE AND ITS STANDARDIZATION IMPROVEMENT", MOBILE COMMUNICATIONS, no. 4, 10 April 2006 (2006-04-10), pages 45 - 49 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2501191C2 (ru) * | 2008-01-04 | 2013-12-10 | Панасоник Корпорэйшн | Способ компоновки каналов и устройство базовой станции для беспроводной связи |
| GB2457242A (en) * | 2008-02-05 | 2009-08-12 | Nec Corp | Resource allocation in a communication system |
| US8521881B2 (en) | 2008-02-05 | 2013-08-27 | Nec Corporation | Resource allocation |
| US9204436B2 (en) | 2008-02-05 | 2015-12-01 | Nec Corporation | Resource allocation |
| EP2352267A4 (en) * | 2008-11-06 | 2014-02-12 | Zte Corp | Method for mapping resource cells |
| CN102726109A (zh) * | 2010-01-26 | 2012-10-10 | Lg电子株式会社 | 在无线通信系统中分配资源的方法和设备 |
| US8817692B2 (en) | 2010-01-26 | 2014-08-26 | Lg Electronics Inc. | Method and apparatus for allocating resources in a wireless communication system |
| US9107189B2 (en) | 2010-01-26 | 2015-08-11 | Lg Electronics Inc. | Method and apparatus for allocating resources in a wireless communication system |
| CN102726109B (zh) * | 2010-01-26 | 2016-01-20 | Lg电子株式会社 | 在无线通信系统中分配资源的方法和设备 |
| CN105450379A (zh) * | 2010-01-26 | 2016-03-30 | Lg电子株式会社 | 在无线通信系统中分配资源的方法和设备 |
| CN105450379B (zh) * | 2010-01-26 | 2018-11-27 | Lg电子株式会社 | 在无线通信系统中分配资源的方法和设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101064706A (zh) | 2007-10-31 |
| CN101421947A (zh) | 2009-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2007131413A1 (en) | An allocation method of time-frequency resources and the apparatus and wireless communication system thereof | |
| JP5431538B2 (ja) | 無線通信システムにおけるリソース割り当ておよびマッピング | |
| KR100842588B1 (ko) | 다중 반송파 전송 방식을 사용하는 광대역 무선 통신시스템의 부반송파 할당 방법 및 장치 | |
| CN1930797B (zh) | 在正交频分多址蜂窝通信系统中分配子信道的方法 | |
| JP5529763B2 (ja) | 無線通信システムにおけるダイバーシティ副チャンネルの構成装置及びその方法 | |
| CN101242257B (zh) | 基于多载波的传输系统中的数据传输的方法及装置 | |
| CN103716146B (zh) | 基站及移动台装置、资源块分配及数据接收方法、集成电路 | |
| CN113748640B (zh) | 用于无线网络中非连续的多资源单元的设备和方法 | |
| WO2008001728A1 (en) | Radio communication base station device and resource block allocation method | |
| CN1902840A (zh) | 正交频分多址蜂窝系统中划分资源空间、分配物理信道以及分派功率的方法 | |
| US8218420B2 (en) | Non-cyclic evolving-type user resource structure for OFDMA based system with null guard tones | |
| WO2006121302A1 (en) | Method and apparatus for indexing physical channels in an ofdma system | |
| CN101146317A (zh) | 资源分配及控制信令传输方法 | |
| CN105792360B (zh) | 超级小区下资源分配的方法及装置 | |
| US9185689B2 (en) | Apparatus and method for resource allocation in wireless communications | |
| CN101080081B (zh) | 系统资源的分配及指示方法 | |
| CN100466799C (zh) | 软频率复用的方法 | |
| WO2009065263A1 (en) | A method for dividing permutation zone of subcarriers and an information configuration system | |
| CN101137182B (zh) | 一种无线通信系统中的资源分配方法及系统 | |
| CN101425989B (zh) | 用于正交频分复用系统的数据传输方法及系统 | |
| CN1889554B (zh) | 导频传送方法 | |
| JP6152948B2 (ja) | 移動局がリソースを識別できるようにするパラメータから得られる値を決定する方法及び装置、移動局がリソースを識別できるようにするパラメータを決定する方法及び装置、ならびにコンピュータプログラム | |
| CN100563137C (zh) | 一种在正交频分多址系统中实现快跳频的方法 | |
| CN1881853A (zh) | 一种无线通信系统时频资源的分配方法 | |
| RU2801312C9 (ru) | Передающее устройство, приемное устройство, способ передачи и способ приема |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07720881 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 200780013427.3 Country of ref document: CN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 07720881 Country of ref document: EP Kind code of ref document: A1 |