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WO2017128289A1 - 信道状态信息反馈方法、资源分配方法、装置和通信系统 - Google Patents

信道状态信息反馈方法、资源分配方法、装置和通信系统 Download PDF

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Publication number
WO2017128289A1
WO2017128289A1 PCT/CN2016/072746 CN2016072746W WO2017128289A1 WO 2017128289 A1 WO2017128289 A1 WO 2017128289A1 CN 2016072746 W CN2016072746 W CN 2016072746W WO 2017128289 A1 WO2017128289 A1 WO 2017128289A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
state information
channel state
neighbor
base station
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
Application number
PCT/CN2016/072746
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English (en)
French (fr)
Inventor
郤伟
周华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to CN201680078317.4A priority Critical patent/CN108476495A/zh
Priority to PCT/CN2016/072746 priority patent/WO2017128289A1/zh
Publication of WO2017128289A1 publication Critical patent/WO2017128289A1/zh
Priority to US16/040,911 priority patent/US20180351622A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel state information (CSI) feedback method, a resource allocation method, a device, and a communication system.
  • CSI channel state information
  • V2V vehicle-to-vehicle
  • DSRC Institute of Electrical and Electronics Engineers
  • ITS intelligent transportation systems
  • LTE Long Term Evolution
  • LTE-Advanced Advanced Long Term Evolution
  • V2V communication requires lower latency and higher reliability than D2D communication.
  • the latency of V2V communication is usually less than 100 milliseconds; the V2V communication service involves security, so the reliability of V2V communication is extremely demanding.
  • the traditional mechanism for D2D needs to be further enhanced in various aspects, such as optimizing the resource pool structure, reducing resource collisions, overcoming large Doppler spread, enhancing demodulation reference signals and synchronization signals, etc. .
  • the embodiment of the invention provides a channel state information feedback method, a resource allocation method, a device and a communication system. To reduce resource collisions and improve signal quality.
  • a channel state information feedback method includes:
  • the user equipment feeds back the channel state information to the base station, where the channel state information includes: a link identifier of the link between the user equipment and the neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment,
  • the base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • a resource allocation method includes:
  • channel state information that is fed back by the user equipment, where the channel state information includes: a link identifier of a link with the neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment;
  • the base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • a channel state information feedback device which is configured on a user equipment, where the device includes:
  • a sending unit which feeds back channel state information to the base station, where the channel state information includes: a link identifier of a link between the user equipment and a neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment, so that The base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • a resource allocation apparatus configured in a base station, where the apparatus includes:
  • a receiving unit which receives channel state information that is fed back by the user equipment, where the channel state information includes: a link identifier of a link with a neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment;
  • An allocating unit allocates resources for each user equipment according to channel state information fed back by each user equipment.
  • a user equipment wherein the user equipment comprises the aforementioned channel state information feedback means.
  • a base station wherein the base station comprises the aforementioned resource allocation means.
  • a communication system comprising a base station and a user equipment, wherein
  • the user equipment is configured to: feed back channel state information to the base station, where the channel state information includes: a link identifier of a link with the neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment;
  • the base station is configured to: receive the channel state information that is fed back by the user equipment, and allocate resources to each user equipment according to channel state information fed back by each user equipment.
  • the beneficial effects of the embodiments of the present invention are that the method, the device or the system of the embodiment of the invention reduces resource collision and improves signal quality.
  • FIG. 1 is a schematic diagram of a method for feeding back channel state information according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of a resource allocation method according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic diagram of one embodiment of resource allocation in the method of FIG. 2;
  • Figure 5 is a schematic diagram of time domain resource allocation
  • FIG. 6 is a schematic diagram of frequency domain resource allocation
  • FIG. 7 is a schematic diagram of a feedback device for channel state information according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic diagram of a user equipment according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic diagram of a resource allocation apparatus according to Embodiment 4 of the present invention.
  • Figure 10 is a schematic illustration of a second dispensing module of the apparatus of Figure 9;
  • FIG. 11 is a schematic diagram of a base station according to Embodiment 4 of the present invention.
  • Figure 12 is a diagram showing the communication system of Embodiment 5 of the present invention.
  • a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions.
  • the term "base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • a mobile station or device may be referred to as a "user equipment” (UE).
  • UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a car, and the like.
  • PDA personal digital assistant
  • FIG. 1 is a schematic diagram of the method in this embodiment. As shown in FIG. 1, the method includes:
  • Step 101 The user equipment feeds back channel state information to the base station, where the channel state information includes: a link identifier of the link between the user equipment and the neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment,
  • the base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • the user equipment may be, for example, the terminal of the foregoing vehicle network, but the present invention is not limited thereto.
  • the user equipment may also be a terminal of another network system.
  • the embodiment of the present invention is only described by taking the vehicle network as an example, but is not limited thereto, and can be applied to any system that performs channel information feedback or resource allocation.
  • the base station may be a macro base station (for example, an eNB), and the macro generated by the user equipment by the macro base station A cell (for example, a macro cell) provides a service.
  • the base station in the embodiment of the present invention may also be a micro base station, and the user equipment is served by a micro cell (for example, a Pico cell) generated by the micro base station.
  • the embodiment of the present invention is not limited thereto, and a specific scenario may be determined according to actual needs.
  • the user equipment helps the base station to construct a topology of the user equipment by feeding back the channel state information to the base station, thereby allocating resources for each user equipment. Thereby, resource collisions are reduced and signal quality is improved.
  • the link may be an edge link between user equipments, and the link identifier is an identifier of the link.
  • the above link may also be other types of links according to the type of the communication system, or have other names.
  • the side link and the side link identifier are taken as an example for description.
  • the sidelink identity may be obtained by detecting a side link synchronization signal (SLSS) of the surrounding user equipment, and the specific detection method in this embodiment, and The method of obtaining the above SLID is not limited.
  • the user equipment identity may be obtained by using a physical side link discovery channel (PSDCH).
  • PSDCH physical side link discovery channel
  • the channel state information may further include any one of the following and/or any combination:
  • the signal strength received by the user equipment from each neighbor user equipment and/or
  • the base station can refer to the information when constructing the topology of the user equipment, so as to more accurately understand the relationship between the user equipments. Provide a reference for constructing the topology of the user equipment or allocating resources for the user equipment.
  • the user equipment may also feed back other channel state information, such as the identifier of the user equipment, to the base station, as needed, which is not limited in this embodiment.
  • the feedback resource for the channel state information may include a physical uplink share channel (PUSCH) and/or a physical uplink control channel (physical uplink). Control channel, PUCCH). That is, the user equipment may feed back the foregoing channel state information through a physical uplink channel, for example, each user equipment feeds back the channel state information on a PUSCH configured by its serving base station; for example, each user equipment is at its serving base station. The channel state information is fed back on the configured PUCCH.
  • PUSCH may be considered.
  • PUCCH may be considered, but this embodiment is not limited thereto.
  • the triggering manner of the feedback of the channel state information may be divided into a passive mode and an active mode.
  • the feedback is triggered by the base station, that is, the user equipment receives the feedback request of the base station.
  • the channel state information is sent back to the base station;
  • the active mode the feedback is automatically triggered by the user equipment, that is, after the user equipment detects that the topology of the neighbor user equipment changes, for example, a new neighbor user equipment appears. And/or the existing neighbor user equipment disappears, etc., and the channel state information is fed back to the base station.
  • the manner in which the user equipment detects the topology of the neighbor user equipment is not limited in this embodiment, and various existing methods capable of detecting the appearance and/or disappearing of the user equipment may be applied to the embodiment.
  • the feedback mode of the channel state information may be divided into periodic feedback and aperiodic feedback from the perspective of the feedback state, that is, the user equipment may perform the foregoing feedback periodically or non-periodically; From the perspective of feedback quantity, it can be divided into absolute feedback and incremental feedback, and can also be divided into partial feedback and full feedback.
  • the above feedback manners may be used interchangeably, and may be determined by pre-configuration or preset.
  • the user equipment can feed back the channel state information of all the neighbor user equipments each time.
  • the user equipment can only feed back and The feedback (such as the last feedback) is compared to the different parts.
  • the channel state information of its neighbor user equipment is fed back by means of periodic feedback, and the UE1 feeds back channel state information of UE2, UE3, UE4 and UE5 in the first feedback, and thereafter The topology of the neighboring user equipment of UE1 is changed.
  • UE1 only feeds back UE2 and the second feedback.
  • Channel state information of UE6 For example, if UE2 leaves (is no longer a neighbor of UE1), and UE6 joins (becomes a neighbor of UE1), UE1 only feeds back UE2 and the second feedback.
  • Channel state information of UE6 For example, if UE2 leaves (is no longer a neighbor of UE1), and UE6 joins (becomes a neighbor of UE1), UE1 only feeds back UE2 and the second feedback.
  • Channel state information of UE6 For example, if UE2 leaves (is no longer a neighbor of UE1), and UE6 joins (becomes a neighbor of UE1), UE1 only feeds back UE2 and the second feedback.
  • Channel state information of UE6 For example, if UE2 leaves (is no longer a neighbor of UE1), and UE6 joins (becomes a neighbor of UE
  • the user equipment may feed back channel state information of one or a part of neighboring user equipments each time, and for all feedback, the user equipment may Feedback channel state information of all neighbor user equipments. Which feedback method is used can be determined according to the needs or characteristics of the feedback resources.
  • the user equipment feeds back the channel state information of the neighbor user equipment to the base station, and the base station constructs the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, thereby reducing Resource collisions and improved signal quality.
  • the present embodiment provides a resource allocation method, which is applied to a base station, and is a processing on the base station side corresponding to the method in Embodiment 1, and the same content as Embodiment 1 is not repeatedly described.
  • FIG. 2 is a schematic diagram of an embodiment of the method of this embodiment. As shown in FIG. 2, the method includes:
  • Step 201 The base station receives the channel state information that is fed back by the user equipment, where the channel state information includes: a link identifier of the link between the user equipment and the neighbor user equipment, and/or a user equipment identifier of the neighbor user equipment. ;
  • Step 202 The base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • step 201 regarding the feedback resource of the channel state information, the triggering manner of the feedback, the feedback mode, and the content included in the channel state information, reference may be made to Embodiment 1, and the corresponding content of Embodiment 1 is incorporated herein. I will not repeat them here.
  • the base station may construct a topology of the user equipment by referring to the channel state information, thereby allocating resources for each user equipment, thereby reducing resource collision and improving The signal quality.
  • the specific resource allocation manner is not limited, and any manner of allocating resources to each user equipment according to channel state information fed back by each user equipment may be applied to this embodiment.
  • An embodiment of the resource allocation method in this embodiment is described below. The embodiment is merely illustrative and does not limit the embodiment.
  • the process of resource allocation can be implemented by the method of FIG. 3, as shown in FIG. 3, the method includes:
  • Step 301 The base station determines, according to channel state information fed back by each user equipment, a set of user equipments and a set of neighbor relationships between the user equipments.
  • Step 302 The base station allocates time domain resources to each user equipment by using a configurable transmission moment.
  • the user equipment set and the set of neighboring relationships between the user equipments are determined, that is, the topology of the user equipment is determined, and the base station can allocate resources to each user equipment by referring to the topology of the user equipment.
  • the configurable transmission time is allocated to each user equipment, so that the transmission time of the user equipment having the adjacent relationship is different and/or the frequency domain resources of the user equipment with the same transmission time are different, thereby reducing resource collision and improving The signal quality.
  • the user equipment set includes all user equipments that feed back the channel state information.
  • the user equipment set may further include user equipment that does not feed back the channel state information, but serves as the channel state information.
  • the user device of the neighbor user device appears.
  • the neighbor relationship set includes the neighbor relationship between each user equipment in the foregoing user equipment set.
  • UE1 feeds back the CSI of UE2, UE3 and UE4, UE2 feeds back the CSI of UE1, UE5, UE6 and UE7, UE3 and UE4 feed back the CSI of UE1, and UE5 feeds back the CSI of UE2 and UE6, UE6
  • the CSI of UE2 and UE5 is fed back.
  • UE7 does not feed back the CSI of any user equipment, but the neighbor user equipment of UE2 is fed back by UE2.
  • the user equipment set includes UE1, UE2, UE3, UE4, UE5, UE6, UE7, and
  • the adjacency relationship set includes the neighbor relationship between the UE1 and the UE2, the UE3, and the UE4, the neighbor relationship between the UE2 and the UE5, the UE6, and the UE7, and the neighbor relationship between the UE5 and the UE6.
  • the CSI is fed back twice, and the neighbor relationship between these user equipments can be weighted accordingly.
  • the channel state information fed back by each user equipment further includes the foregoing optional content, for example, any one or any combination of the following: the signal strength received by the user equipment from each neighbor user equipment; And/or an estimated value of the distance from the user equipment to each neighbor user equipment; and/or an estimated value of the path loss from the user equipment to each neighbor user equipment, the neighbor relationship between the user equipments Can be weighted accordingly.
  • this embodiment does not limit.
  • the resource allocation includes a time domain resource allocation and a frequency domain resource allocation, wherein the frequency domain resource allocation is optional, that is, if all user equipments having adjacent relationships cannot be used by time domain resource allocation
  • the domain resources are separated, and the frequency domain resource allocation can be further used to distinguish the user equipments with the same time domain resources.
  • the configurable transmission time is a time domain resource, which is a time when the data packet of the V2V message can be sent.
  • the number of the configurable transmission time may be equal to or smaller than the time.
  • the service of each user equipment is a period.
  • each transmission takes 2 milliseconds, and the number of transmission moments that can be configured is 5.
  • the periodic offsets are ⁇ 0, 1 ⁇ , ⁇ 2, 3 ⁇ , ⁇ 4, 5 ⁇ , ⁇ 6, 7 ⁇ , ⁇ 8, 9 ⁇ .
  • the configurable transmission time may be recycled to perform resources on the user equipment that does not allocate the time domain resource. distribution.
  • UE7 has a neighbor relationship with UE2, and has no neighbor relationship with UE1. It can allocate t1 to UE1 and UE7, and allocate t2 to UE2, UE3, and UE4.
  • the following frequency domain resource allocation can be continued for the user equipments having the same transmission time.
  • the method may further include:
  • Step 303 The base station allocates frequency domain resources to user equipments with the same transmission time according to channel state information fed back by each user equipment.
  • step 303 can be implemented by the method of FIG. 4, as shown in FIG. 4, the method includes:
  • Step 401 Determine a set of user equipments with the same sending time
  • Step 402 Determine, according to the channel state information and the interference and/or distance between the user equipments with the same sending time, the set of neighboring relationships between the user equipments with the same sending time;
  • Step 403 Allocate resources to the user equipment with the same sending time by using the available frequency domain resources.
  • the set of user equipments is a set of user equipments that are assigned the same transmission time in the foregoing time domain resource allocation process. Still taking FIG. 4 as an example, if UE5 is allocated t1 and UE6 is allocated t2, the set of user equipments may be UE1, UE5 and UE7 to which transmission time t1 is allocated, or may be assigned transmission time t2. UE2, UE3, UE4, UE6.
  • step 402 the neighbor relationship set needs to be determined, and the difference between the time domain allocation process and the time domain allocation process is that not only the channel information fed back by each user equipment but also the user equipment set is further considered. Interference and/or distance between user equipment.
  • the interference threshold and the distance threshold may be predefined or configured by the base station according to the speed, density, and the like of the user equipment, and the specific configuration method is not limited.
  • the distance refers to the number of edges of the link in which the number of edges is the smallest among the links between two user equipments.
  • the user equipment set includes UE1, UE5, and UE7.
  • ⁇ UE5 the number 2 of the side of the link UE1 ⁇ UE2 ⁇ UE5 is smaller than the number 3 of the side of the link UE1 ⁇ UE2 ⁇ UE6 ⁇ UE5, and the distance between the UE1 and the UE 5 is considered to be 2.
  • the channel state information fed back by each user equipment further includes the foregoing optional content, for example, any one or any combination of the following: the signal strength received by the user equipment from each neighbor user equipment; And/or an estimated value of the distance from the user equipment to each neighbor user equipment; and/or an estimated value of the path loss from the user equipment to each neighbor user equipment, the neighbor relationship between the user equipments (ie distance) can be weighted accordingly.
  • this embodiment does not limit.
  • step 403 similar to the time domain resource allocation, if the above-mentioned available frequency domain resources are insufficient to make the frequency domain resources of all the user equipments having the adjacent relationship in the user equipment set different, the base station may recycle the foregoing.
  • the available frequency domain resources allocate resources to user equipments that do not allocate frequency domain resources.
  • interference suppression may be considered, so that two user equipments that are far away from each other use the same frequency domain resource to ensure that Mutual interference can endure or fall below a certain threshold.
  • the base station can construct the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, reducing resource collision, and improving signal quality.
  • the problem of resource allocation can be modeled as a vertex coloring problem in graph theory. Therefore, the problem of resource allocation is divided into two sub-problems: time domain resource allocation and frequency domain resource allocation. Domain resource allocation is optional. Moreover, for each problem, the topology map of the user equipment can be separately constructed, and the vertices of the graph are respectively colored.
  • the resource allocation method of this embodiment will be described below from the perspective of graph theory.
  • time domain resource allocation is to determine the subframe offset of each periodic packet flow.
  • FIG. 5 is a schematic diagram of time domain resource allocation according to the embodiment. As shown in FIG. 5, the process of time domain resource allocation includes:
  • Step 501 Construct a graph with each user equipment as a vertex and the neighbor relationship of each pair of user equipments as the edge between the vertices corresponding to the pair of user equipments.
  • Step 502 Using a color set C t to map Perform vertex shading.
  • V is a set of user equipment, which can be expressed as ⁇ t is a set of neighbor relationships between user devices, which can be expressed as By constructing the above diagram The topology of the user equipment is obtained.
  • the edges between the two vertices may be weighted accordingly.
  • each configurable transmission time can be represented as a color, and all configurable transmission moments are recorded as a color set.
  • Use this color collection Can be on the map
  • this embodiment does not limit the specific coloring method, and existing mature algorithms in graph theory can be used.
  • the configurable transmission time is, for example, a subframe offset of the periodic service, and the number of configurable transmission moments may be equal to the period of the periodic service.
  • the configurable color if the configurable color is too small, it is insufficient for the figure. All vertices in the color are colored, ie Then configurable colors can be reused. For example, you can put a color collection As a circular linked list. When the last available color After use, the first color Will be reused as the next new color.
  • all user equipments can be divided into several groups, that is, The sending time of the user equipment in each group is the same, corresponding to the vertices of the same color in the time domain resource allocation. Frequency domain resource allocation needs to be performed for each user equipment in each group of user equipments having the same color.
  • FIG. 6 is a schematic diagram of the frequency domain resource allocation in the embodiment, without loss of generality.
  • the group V i is taken as an example.
  • the frequency domain resource allocation process includes:
  • Step 601 each user equipment to the group V i as a vertex, adjacent relation to each user equipment in the group V i as edges between the vertices of each pair corresponding to a user equipment, Fig construct
  • Step 602 using color set C f to map Perform vertex shading.
  • step 601 the set of user equipment V i V i in the group, can be expressed as A set of neighbor relationships between user devices, which can be expressed as By constructing the above diagram The topology of the user equipment in the group V i is obtained.
  • the "adjacent relationship" in the frequency domain resource allocation has a broader meaning than the time domain resource allocation.
  • the method includes: not only the neighbor relationship based on the channel state information feedback, but also the neighbor relationship in which the interference between the two user equipments is greater than a certain interference threshold and/or the distance between the two user equipments is less than a certain distance threshold.
  • “distance” herein refers to the number of edges included in the shortest path between two vertices.
  • the interference threshold and the distance threshold may be defined in advance or flexibly configured by the base station according to characteristics such as speed, density, and the like of the user equipment.
  • each frequency domain resource unit can be represented as a color, and all colors are recorded as a color set.
  • Use this color collection Can be on the map
  • this embodiment does not limit the specific coloring method, and existing mature algorithms in graph theory can be used.
  • the frequency domain resource is insufficient, or the configurable color is too small, it is insufficient for the map. All vertices in the color are colored, ie So similarly, this color (ie frequency domain resource) can be reused. For example, you can put a color collection As a circular linked list.
  • interference suppression may be considered, that is, the same color (the same frequency domain resource unit) is multiplexed between distant vertices to ensure mutual interaction between user equipments. Interference can tolerate or fall below a certain threshold.
  • the present embodiment provides a feedback device for the channel state information, which is configured on the user equipment.
  • the principle of the device is similar to that of the first embodiment. Therefore, the specific implementation may refer to the embodiment 1.
  • the implementation of the method, the same content will not be repeated.
  • FIG. 7 is a schematic diagram of the feedback device of the channel state information.
  • the device 700 includes: a sending unit 701, which feeds back channel state information to a base station, where the channel state information includes: the user equipment and the neighbor.
  • the channel state information may also include any one or any combination of the following:
  • the signal strength received by the user equipment from each neighbor user equipment and/or
  • the sending unit 701 may feed back the channel state information to the base station by using a physical uplink channel, such as a physical uplink shared channel and/or a physical uplink control channel.
  • a physical uplink channel such as a physical uplink shared channel and/or a physical uplink control channel.
  • the apparatus 700 may further include:
  • the receiving unit 702 receives the feedback request sent by the base station.
  • the feedback of the channel state information is passively triggered, that is, after the receiving unit 702 receives the feedback request of the base station, the transmitting unit 701 feeds back the channel state information to the base station.
  • the apparatus 700 may further include:
  • the detecting unit 703 detects the topology of the neighbor user equipment of the user equipment.
  • the feedback of the channel state information is actively triggered, that is, the sending unit 701 actively feeds back to the base station after detecting that the topology of the neighbor user equipment of the user equipment changes. The above channel state information.
  • the sending unit 701 may perform the foregoing feedback periodically or aperiodically, and/or the sending unit 701 may feed back channel state information of all neighbor user equipments of the user equipment, and may also feed back
  • the feedback unit 701 may feed back channel state information of one or a part of the neighbor user equipments of the user equipment each time, and may also feed back all neighbor user equipments of the user equipment each time. Channel status information.
  • the device of the present embodiment feeds back the channel state information to the base station, and the base station can construct the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, reducing resource collision, and improving Signal quality.
  • the embodiment further provides a user equipment, and a feedback device configured with channel state information as described above 700.
  • FIG. 8 is a schematic block diagram of a system configuration of a user equipment 800 according to an embodiment of the present invention.
  • the user device 800 can include a central processor 801 and a memory 802; the memory 802 is coupled to the central processor 801.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the feedback means of channel state information may be integrated into central processor 801.
  • the central processing unit 801 can be configured to implement the feedback method of the channel state information described in Embodiment 1.
  • the central processing unit 801 can be configured to: feed back channel state information to the base station, the channel state information including: a link identifier of a link between the user equipment and a neighbor user equipment, and/or the neighbor The user equipment identifier of the user equipment, so that the base station allocates resources to each user equipment according to channel state information fed back by each user equipment.
  • the channel state information further includes any one or any combination of the following:
  • the signal strength received by the user equipment from each neighbor user equipment and/or
  • the central processing unit 801 is further configured to: feed back the channel state information to the base station by using a physical uplink shared channel and/or a physical uplink control channel.
  • the central processing unit 801 is further configured to: feed back the channel state information to the base station after receiving the feedback request of the base station.
  • the central processing unit 801 is further configured to: feed back the channel state information to the base station after detecting that a topology of the neighbor user equipment of the user equipment changes.
  • the central processing unit 801 is further configured to: perform the foregoing feedback periodically or non-periodically.
  • the central processing unit 801 is further configured to: feed back channel state information of all neighbor user equipments of the user equipment, or feed back different parts compared to previous feedback.
  • the central processing unit 801 is further configured to: feed back channel state information of one or a part of the neighbor user equipments each time, or the user equipment feeds back channel state information of all neighboring user equipments.
  • the feedback device of the channel state information may be configured separately from the central processing unit 801.
  • the feedback device of the channel state information may be configured as a chip connected to the central processing unit 801 by the control of the central processing unit 801. The function of a feedback device that implements channel state information.
  • the user equipment 800 may further include: a communication module 803, an input unit 804, an audio processing unit 805, a display 806, and a power source 807. It should be noted that the user equipment 800 does not necessarily have to include all the components shown in FIG. 8; in addition, the user equipment 800 may also include components not shown in FIG. 8, and reference may be made to the prior art.
  • central processor 801 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls various aspects of user device 800. The operation of the part.
  • the memory 802 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • the above-described channel state information information can be stored, and a program for executing the related information can be stored.
  • the central processing unit 801 can execute the program stored by the memory 802 to implement information storage or processing and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of user device 800 may be implemented by special purpose hardware, firmware, software or a combination thereof without departing from the scope of the invention.
  • the user equipment of the embodiment feeds back the channel state information to the base station, and the base station can construct the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, reducing resource collision, and improving The signal quality.
  • the present embodiment provides a resource allocation device, which is configured in a base station.
  • the principle of the device is similar to the method of the second embodiment.
  • the specific implementation may refer to the implementation of the method in the second embodiment. Repeat the explanation.
  • FIG. 9 is a schematic diagram of a resource allocation apparatus according to the embodiment. As shown in FIG. 9, the apparatus 900 includes a receiving unit 901 and an allocating unit 902.
  • the receiving unit 901 receives channel state information that is fed back by the user equipment, where the channel state information includes: a link identifier of a link with a neighbor user equipment, and/or a user of the neighbor user equipment. Equipment Identity.
  • the channel state information has been described in detail in the foregoing embodiments, and the contents thereof are incorporated herein, and are not described herein again.
  • the allocating unit 902 allocates resources to each user equipment according to channel state information fed back by each user equipment. This embodiment does not limit the specific resource allocation mode. The following examples are provided.
  • the allocating unit 902 includes a first determining module 9021 and a first assigning module 9022.
  • the first determining module 9021 determines a set of user equipment according to channel state information fed back by each user equipment. And a set of neighboring relationships between the user equipments; the first allocating module 9022 allocates resources for each user equipment by using a configurable sending moment.
  • the first allocation module 9022 recycles the configurable The transmission time allocates resources to user equipments that do not allocate time domain resources.
  • the channel state information further includes any one or any combination of the following: the signal strength received by the user equipment from each neighbor user equipment; and/or from the user equipment to each neighbor An estimated value of the distance of the user equipment; and/or an estimated value of the path loss from the user equipment to each of the neighbor user equipments, the neighboring relationship between the user equipments is weighted accordingly.
  • the allocating unit 902 may further include a second allocating module 9023, which allocates the same user equipment at the same sending time according to channel state information fed back by each user equipment. Resources.
  • the second allocation module 9023 may further include: a second determining module 1001, a third determining module 1002, and a third assigning module 1003.
  • the second determining module 1001 determines the set of user equipments with the same sending time.
  • the third determining module 1002 determines, according to the channel state information and the interference and/or distance between the user equipments with the same sending time, the set of neighboring relationships between the user equipments with the same sending time.
  • the third allocation module 1003 allocates resources for the user equipments with the same transmission time by using the available frequency domain resources.
  • the third determining module 1002 determines that there is an adjacent relationship between the two user equipments.
  • the third determining module 1002 determines that there is an adjacency relationship between the two user equipments.
  • the distance is the number of edges of the link with the smallest number of edges among the links between the two user equipments.
  • the channel state information further includes any one or any combination of the following: a signal strength received by the user equipment from each neighbor user equipment; and/or from the user equipment to each An estimated value of the distance of the neighbor user equipment; and/or an estimated value of the path loss from the user equipment to each neighbor user equipment, the neighbor relationship between the user equipments is weighted accordingly.
  • the third allocation module 1003 is recycled.
  • the usable frequency domain resource allocates resources to user equipments that do not allocate frequency domain resources.
  • the device of the embodiment constructs the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, reducing resource collision, and improving signal quality.
  • the embodiment further provides a base station configured with the resource allocation device 900 as described above.
  • FIG. 11 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • the base station 1100 can include a central processing unit (CPU) 1101 and a memory 1102; the memory 1102 is coupled to the central processing unit 1101.
  • the memory 1102 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1101 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment.
  • the functionality of the resource allocation device can be integrated into the central processor 1101.
  • the central processing unit 1101 may be configured to implement the resource allocation method described in Embodiment 2.
  • the central processing unit 1101 may be configured to: receive channel state information fed back by the user equipment, where the channel state information includes: a link identifier of a link with a neighbor user equipment, and/or the neighbor user equipment The user equipment identifier is allocated to each user equipment according to channel state information fed back by each user equipment.
  • the central processing unit 1101 may be further configured to: determine, according to channel state information fed back by each user equipment, a set of user equipments and a set of neighboring relationships between the user equipments; The configured sending time allocates resources for each user equipment.
  • the central processing unit 1101 may be further configured to: recycle the location The configurable transmission time allocates resources to user equipments that do not allocate time domain resources.
  • the central processor 1101 may also be configured to: phase between the user equipments Neighbor relationships are weighted accordingly.
  • the central processing unit 1101 may be further configured to: allocate frequency domain resources to the user equipment with the same sending time according to channel state information fed back by each user equipment.
  • the central processing unit 1101 may be configured to: determine a set of user equipments with the same sending time; determine according to the channel state information and interference and/or distance between user equipments with the same sending time And transmitting, by using the available frequency domain resources, resource allocation for the user equipment with the same sending time.
  • the central processing unit 1101 may be configured to: determine that there is an adjacency relationship between the two user equipments.
  • the central processing unit 1101 may be configured to: determine that there is an adjacency relationship between the two user equipments.
  • the distance is the number of edges of the link with the smallest number of edges in the link between two user equipments.
  • the central processor 1101 may also be configured to: phase between the user equipments Neighbor relationships are weighted accordingly.
  • the central processing unit 1101 may be further configured to: Reusing the available frequency domain resources to allocate resources to user equipments that do not allocate frequency domain resources.
  • the resource allocation device may be configured separately from the central processing unit 1101.
  • the resource allocation device may be configured as a chip connected to the central processing unit 1101, and the function of the resource allocation device is implemented by the control of the central processing unit 1101. .
  • the base station 1100 may further include: a transceiver 1103, an antenna 1104, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 1100 does not have to include all the components shown in FIG. 11; in addition, the base station 1100 may also include not shown in FIG. For the components, refer to the prior art.
  • the base station in this embodiment constructs the topology of the user equipment according to the channel state information fed back by each user equipment, thereby better allocating resources for each user equipment, reducing resource collision, and improving signal quality.
  • the embodiment provides a communication system, including the base station as described in Embodiment 4 and the user equipment as described in Embodiment 3.
  • FIG. 12 is a schematic diagram of a configuration of a communication system according to an embodiment of the present invention.
  • the communication system 1200 includes a base station 1201 and a user equipment 1202.
  • the base station 1201 may be the base station 1100 described in Embodiment 4; the user equipment 1202 may be the user equipment 800 described in Embodiment 3.
  • the user equipment 1202 can be configured to: feed back channel state information to the base station 1201, the channel state information including: a link identifier of a link with a neighbor user equipment, and/or a user of the neighbor user equipment
  • the device identifier is configured to: receive the channel state information fed back by the user equipment 1202, and allocate resources to each user equipment according to channel state information fed back by each user equipment.
  • the user equipment feeds back the channel state information of the neighbor user equipment to the base station, so that the base station can allocate resources for each user equipment according to the channel state information fed back by each user equipment, thereby reducing resource collision. And improve the signal quality.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in an information processing apparatus or a user equipment, the program causes the computer to execute the embodiment 1 in the information processing apparatus or the user equipment Feedback method for channel state information.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the feedback method of the channel state information described in Embodiment 1 in the information processing device or the user equipment.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute the resource described in Embodiment 2 in the information processing device or a base station when the program is executed in an information processing device or a base station Distribution method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the resource allocation method described in Embodiment 2 in an information processing device or a base station.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method for feeding back channel information in the feedback device of the channel state information described in the embodiment of the present invention, or the resource allocation method in the resource allocation device may be directly embodied as hardware, a software module executed by the processor, or a combination thereof.
  • one or more of the functional block diagrams shown in FIG. 7 or FIG. 9 and/or one or more combinations of functional block diagrams may correspond to a computer program.
  • Each software module of the process may also correspond to each hardware module.
  • These software modules may correspond to the respective steps shown in FIG. 1 or FIG. 2, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional block diagrams described with respect to FIG. 7 or FIG. 9 and/or one or more combinations of functional block diagrams may be implemented for performing the purposes described herein.
  • Functional general purpose processor digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any Proper combination.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • 9 and/or one or more combinations of functional block diagrams may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple micro A processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • computing devices eg, a combination of a DSP and a microprocessor, multiple micro A processor, one or more microprocessors in communication with the DSP, or any other such configuration.

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Abstract

一种信道状态信息反馈方法、资源分配方法、装置和通信系统。该信道状态信息反馈方法包括：用户设备向基站反馈信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。由此，降低了资源碰撞，并提高了信号质量。

Description

信道状态信息反馈方法、资源分配方法、装置和通信系统 技术领域
本发明涉及通信领域，特别涉及一种信道状态信息(channel state information,CSI)反馈方法、资源分配方法、装置和通信系统。
背景技术
最近，车与车(vehicle-to-vehicle，V2V)通信逐渐成为无线通信领域的研究热点。在未来，不仅车与车之间能够互相连接，而且车能够自由接入互联网。这种“车联网”是一个全新的概念。而且，大量的应用也会应运而生，从而显著地改变我们的生活。因此，“车联网”已经吸引了大量研究机构和标准化组织的关注。到目前为止，已经涌现了大量的车与车通信系统和项目，典型的有电气和电子工程师协会(IEEE)802.11p专用短距离通信系统(dedicated short range communications，DSRC)、智能交通系统(intelligent transportation system，ITS)等。
另一方面，长期演进(Long Term Evolution，LTE)/高级长期演进(LTE-Advanced)系统在全球范围的巨大成功为车与车通信带来了新的机遇，使得车与车相连、车与互联网相连成为可能。由于目前LTE/LTE-Advanced已经支持设备间通信(device-to-device，D2D)，所以最直接的方案是基于D2D的PC5接口实现V2V通信。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
然而，发明人发现，与D2D通信相比，V2V通信要求更低的时延和更高的可靠性。例如，V2V通信的时延通常要低于100毫秒；V2V通信业务会涉及到安全性，因此在可靠性方面，V2V通信的要求极为苛刻严格。面对如此严格的技术要求，原本针对D2D的传统机制在各方面需要进一步增强，例如优化资源池结构，减少资源碰撞，克服较大的多普勒扩展，增强解调参考信号以及同步信号等等。
本发明实施例提供一种信道状态信息反馈方法、资源分配方法、装置和通信系统。以降低资源碰撞和提高信号质量。
根据本实施例的第一方面，提供了一种信道状态信息反馈方法，其中，该方法包括：
用户设备向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
根据本实施例的第二方面，提供了一种资源分配方法，其中，该方法包括：
基站接收用户设备反馈的信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
根据本实施例的第三方面，提供了一种信道状态信息反馈装置，配置于用户设备，其中，该装置包括：
发送单元，其向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
根据本实施例的第四方面，提供了一种资源分配装置，配置于基站，其中，该装置包括：
接收单元，其接收用户设备反馈的信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
分配单元，其根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
根据本实施例的第五方面，提供了一种用户设备，其中，所述用户设备包括前述的信道状态信息反馈装置。
根据本实施例的第六方面，提供了一种基站，其中，该基站包括前述的资源分配装置。
根据本实施例的第七方面，提供了一种通信系统，所述通信系统包括基站和用户设备，其中，
所述用户设备被配置为：向基站反馈信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
所述基站被配置为：接收用户设备反馈的所述信道状态信息，根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
本发明实施例的有益效果在于：通过本发明实施例的方法、装置或系统，降低了资源碰撞，并提高了信号质量。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是本发明实施例1的信道状态信息的反馈方法的一示意图；
图2是本发明实施例2的资源分配方法的一示意图；
图3是图2的方法中进行资源分配的一个实施方式的示意图；
图4是一个应用场景的示意图；
图5是时域资源分配的一个示意图；
图6是频域资源分配的一个示意图；
图7是本发明实施例3的信道状态信息的反馈装置的一示意图；
图8是本发明实施例3的用户设备的一示意图；
图9是本发明实施例4的资源分配装置的一示意图；
图10是图9的装置中第二分配模块的一示意图；
图11是本发明实施例4的基站的一示意图；
图12是本发明实施例5的通信系统的一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本发明的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
在本申请中，基站可以被称为接入点、广播发射机、节点B、演进节点B(eNB)等，并且可以包括它们的一些或所有功能。在文中将使用术语“基站”。每个基站对特定的地理区域提供通信覆盖。
在本申请中，移动站或设备可以被称为“用户设备”(UE)。UE可以是固定的或移动的，并且也可以称为移动台、终端、接入终端、用户单元、站等。UE可以是蜂窝电话、个人数字助理(PDA)、无线调制解调器、无线通信设备、手持设备、膝上型计算机、无绳电话、汽车等。
实施例1
本实施例提供了一种信道状态信息反馈方法，该方法应用于用户设备，图1是本实施例的方法的一示意图，如图1所示，该方法包括：
步骤101：用户设备向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
在本实施例中，该用户设备例如可以是前述车联网的终端，但本发明不限于此，例如该用户设备还可以是其他网络系统的终端。本发明实施例仅以车联网为例进行说明，但并不限于此，可以适用于任何进行信道信息反馈或者资源分配的系统。
在本实施例中，基站可以为宏基站(例如eNB)，用户设备由该宏基站产生的宏 小区(例如Macro cell)提供服务；本发明实施例的基站也可以为微基站，用户设备由该微基站产生的微小区(例如Pico cell)提供服务。本发明实施例不限于此，可以根据实际的需要确定具体的场景。
在本实施例中，用户设备通过向基站反馈上述信道状态信息，帮助基站构建用户设备的拓扑，从而为各个用户设备分配资源。由此，降低了资源碰撞，并提高了信号质量。
在本实施例中，上述链路可以是用户设备之间的边链路，上述链路标识即为该边链路的标识。但本实施例并不以此作为限制，上述链路也可以根据通信系统的类型是其他类型的链路，或者具有其他名称。在本实施例中，为了方便说明，以边链路和边链路标识为例进行说明。
在本实施例中，上述边链路标识(sidelink identity,SLID)可以通过对周围用户设备的边链路同步信号(sidelink synchronization signal,SLSS)进行检测获得，本实施例对具体的检测方法，以及获得上述SLID的方法不做限制。
在本实施例中，上述用户设备标识(user equipment identity,UEID)可以通过物理边链路发现信道(physical sidelink discovery channel,PSDCH)获得，本实施例对具体的获取方法不做限制。
在本实施例中，除了上述边链路标识和/或上述用户设备标识以外，该信道状态信息还可以包括以下任意一种和/或任意组合：
所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
从所述用户设备到每个邻居用户设备的距离的估计值；和/或
从所述用户设备到每个邻居用户设备的路损的估计值。
通过反馈上述信息，基站在构建用户设备的拓扑的时候可以参考这些信息，从而更加准确地了解各用户设备之间的关系。为构建用户设备的拓扑或者为用户设备分配资源提供参考。
上述信道状态信息的内容只是举例说明，在具体实现过程中，该用户设备还可以根据需要向基站反馈其它信道状态信息，例如该用户设备的标识等，本实施例对此不作限制。
在本实施例中，对于该信道状态信息的反馈资源，可以包括物理上行共享信道(physical uplink share channel,PUSCH)和/或物理上行控制信道(physical uplink  control channel,PUCCH)。也即，该用户设备可以通过物理上行信道反馈上述信道状态信息，例如每个用户设备在其服务基站为其配置的PUSCH上反馈上述信道状态信息；再例如，每个用户设备在其服务基站为其配置的PUCCH上反馈上述信道状态信息。在本实施例中，对于非周期性反馈，可以考虑使用PUSCH，对于周期性反馈，可以考虑使用PUCCH，但本实施例并不以此作为限制。
在本实施例中，对于该信道状态信息的反馈的触发方式，可以分为被动模式和主动模式，对于被动模式，该反馈由基站触发，也即，该用户设备在接收到上述基站的反馈请求后向该基站反馈上述信道状态信息；对于主动模式，该反馈由该用户设备自动触发，也即，该用户设备在检测到其邻居用户设备的拓扑发生变化后，例如新的邻居用户设备出现，和/或已有的邻居用户设备消失等，向上述基站反馈上述信道状态信息。本实施例对该用户设备检测其邻居用户设备的拓扑的方式不做限制，现有的能够检测用户设备的出现和/或消失的各种方式都可以应用于本实施例。
在本实施例中，对于该信道状态信息的反馈方式，从反馈状态的角度可以分为周期性反馈和非周期性反馈，也即，该用户设备可以周期性或者非周期性地进行上述反馈；从反馈量的角度可以分为绝对反馈和增量反馈，也可以分为部分反馈和全部反馈。并且，上述反馈方式可以交叉使用，具体可以通过预先配置或者预先设置来确定。
在绝对反馈和增量反馈的反馈方式中，对于绝对反馈，该用户设备可以每次都反馈其所有邻居用户设备的上述信道状态信息，对于增量反馈，该用户设备可以每次只反馈与之前的反馈(例如上一次反馈)相比不同的部分。例如，对于UE1，其采用了周期性反馈的方式反馈其邻居用户设备的上述信道状态信息，并且，在第一次反馈时，该UE1反馈了UE2,UE3,UE4和UE5的信道状态信息，此后，UE1的邻居用户设备的拓扑发生了变化，例如UE2离开了(不再是UE1的邻居)，并且UE6加入了(成为了UE1的邻居)，则UE1在第二次反馈时，只反馈UE2和UE6的信道状态信息。在本实施例中，对于用户设备的拓扑变化较快的情况，可以考虑使用绝对反馈，而对于用户设备拓扑不变或者变化较慢的情况，可以考虑使用增量反馈，在这种情况下，新的邻居用户设备的出现和/或已有的邻居用户设备的离开均不是很频繁，使用增量反馈的方式进行信道状态信息的反馈，可以大大地节约反馈开销。
在部分反馈和全部反馈的反馈方式中，对于部分反馈，该用户设备可以每次反馈其一个或者部分邻居用户设备的信道状态信息，对于全部反馈，该用户设备可以每次 反馈其所有邻居用户设备的信道状态信息。具体采用哪种反馈方式，可以根据需要或者反馈资源的特性来决定。
通过本实施例的方法，用户设备将其邻居用户设备的信道状态信息反馈给基站，基站根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
实施例2
本实施例提供了一种资源分配方法，该方法应用于基站，是与实施例1的方法对应的基站侧的处理，其中，与实施例1相同的内容不再重复说明。
图2是本实施例的方法的一个实施方式的示意图，如图2所示，该方法包括：
步骤201：基站接收用户设备反馈的信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
步骤202：所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
在步骤201中，关于该信道状态信息的反馈资源、反馈的触发方式、反馈方式，以及该信道状态信息所包含的内容等，可以参考实施例1，实施例1的相应内容被合并于此，此处不再赘述。
在步骤202中，基站在接收到各个用户设备反馈的上述信道状态信息后，可以参考该信道状态信息构建出用户设备的拓扑，从而为各个用户设备分配资源，由此降低了资源碰撞，并提高了信号质量。
在本实施例中，对具体的资源分配方式不做限制，任何根据各个用户设备反馈的信道状态信息为各个用户设备分配资源的方式，都可以应用于本实施例。下面对本实施例的资源分配方式的一个实施方式进行说明，该实施方式只是举例说明，不构成对本实施例的限制。
在本实施方式中，该资源分配的过程可以通过图3的方法来实现，如图3所示，该方法包括：
步骤301：基站根据各个用户设备反馈的信道状态信息，确定用户设备集合以及各用户设备之间的相邻关系集合；
步骤302：所述基站利用可配置的发送时刻为各个用户设备分配时域资源。
在本实施例中，确定了用户设备集合以及各用户设备之间的相邻关系集合，即确定了用户设备的拓扑，由此，该基站可以参考该用户设备的拓扑为各个用户设备分配资源，例如，将可配置的发送时刻分配给各个用户设备，使得具有相邻关系的用户设备的发送时刻不同和/或发送时刻相同的用户设备的频域资源不同，由此降低了资源碰撞，并提高了信号质量。
在步骤301中，用户设备集合包括了反馈上述信道状态信息的所有的用户设备，可选的，该用户设备集合还可以包括没有反馈上述信道状态信息，但是作为反馈了上述信道状态信息的用户设备的邻居用户设备出现了的用户设备。在步骤301中，相邻关系集合包括了上述用户设备集合中各用户设备之间的相邻关系。
以图4为例，假设UE1反馈了UE2,UE3和UE4的CSI，UE2反馈了UE1,UE5,UE6和UE7的CSI，UE3和UE4反馈了UE1的CSI，UE5反馈了UE2和UE6的CSI，UE6反馈了UE2和UE5的CSI，UE7没有反馈任何用户设备的CSI，但是作为UE2的邻居用户设备被UE2反馈了，则该用户设备集合包括UE1,UE2,UE3,UE4,UE5,UE6,UE7，而相邻关系集合包括UE1分别与UE2,UE3,UE4的相邻关系，UE2分别与UE5,UE6,UE7的相邻关系，以及UE5与UE6的相邻关系。并且，对于UE1与UE2，UE1与UE3，UE1与UE4，UE2与UE5，UE2与UE6，以及UE5与UE6，CSI被反馈了两次，则这些用户设备之间的相邻关系可以被相应加权。
在本实施方式中，如果各用户设备反馈的信道状态信息还包括前述可选内容，例如，以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则各个用户设备之间的相邻关系可以被相应的加权。对于具体的加权方法，本实施例不作限制。
在步骤302中，资源分配包括时域资源分配和频域资源分配，其中，频域资源分配是可选的，也即，如果通过时域资源分配不能将所有具有相邻关系的用户设备的时域资源分开，可以进一步采用频域资源分配来区分时域资源相同的用户设备。
在步骤302中，可配置的发送时刻即为时域资源，其是指可以用来发送V2V消息的数据包的时刻，对于周期性业务，该可配置的发送时刻的个数可以等于或小于该周期性业务的周期与每次发送所持续时间的商。例如，各个用户设备的业务均为周期 为10毫秒的周期性业务，每次发送需要占用2毫秒，那么可以配置的发送时刻的个数为5。其周期偏移分别为{0,1},{2,3},{4,5},{6,7},{8,9}。
在本实施方式中，如果该可配置的发送时刻不足以使得所有具有相邻关系的用户设备的发送时刻不同，则可以循环利用该可配置的发送时刻对未分配时域资源的用户设备进行资源分配。
仍以图4为例，假设可配置的发送时刻的个数为2，分别为t1,t2，则由于UE1和UE2,UE3,UE4具有相邻关系，而UE2,UE3,UE4之间不具有相邻关系，UE7与UE2具有相邻关系，与UE1不具有相邻关系，可以给UE1和UE7分配t1，给UE2,UE3,UE4分配t2。然而，由于UE2与UE5,UE6具有两两相邻关系，当前的2个发送时刻不足以分配给这三个用户设备，则对于具有相同发送时刻的用户设备，可以继续下面的频域资源分配。
如图3所示，该方法还可以包括：
步骤303：所述基站根据各个用户设备反馈的信道状态信息，为发送时刻相同的用户设备分配频域资源。
在本实施方式中，步骤303可以通过图4的方法来实现，如图4所示，该方法包括：
步骤401：确定所述发送时刻相同的用户设备的集合；
步骤402：根据所述信道状态信息以及所述发送时刻相同的用户设备之间的干扰和/或距离确定所述发送时刻相同的用户设备之间的相邻关系集合；
步骤403：利用可使用的频域资源为所述发送时刻相同的用户设备分配资源。
在步骤401中，该用户设备的集合即为在前述的时域资源分配过程中，被分配了相同的发送时刻的用户设备的集合。仍以图4为例，假设UE5被分配了t1，UE6被分配了t2，则该用户设备的集合可以是被分配了发送时刻t1的UE1,UE5和UE7，也可以是被分配了发送时刻t2的UE2,UE3,UE4,UE6。
在步骤402中，也需要确定相邻关系集合，而与时域分配过程不同的是，这里的相邻关系集合不仅要考虑各用户设备反馈的信道信息，还要进一步考虑上述用户设备集合中各用户设备之间的干扰和/或距离。
在本实施方式中，如果两个用户设备之间的干扰大于干扰门限，则确定所述两个用户设备之间存在相邻关系，或者，如果两个用户设备之间的距离小于距离门限，则 确定所述两个用户设备之间存在相邻关系。在本实施方式中，该干扰门限和该距离门限可以预先定义或者由基站根据用户设备的速度、密度等特征灵活配置，对于具体的配置方法不做限制。
在本实施方式中，距离是指两个用户设备之间的链路中，边的数量最小的链路的边的数量。以用户设备集合包括UE1,UE5和UE7为例，如图4所示，UE5与UE1之间具有两条链路，一条链路是UE1→UE2→UE5，另一条链路是UE1→UE2→UE6→UE5，则链路UE1→UE2→UE5的边的数量2小于链路UE1→UE2→UE6→UE5的边的数量3，则认为UE1与UE5之间的距离为2。
在本实施方式中，如果各用户设备反馈的信道状态信息还包括前述可选内容，例如，以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则各个用户设备之间的相邻关系(也即距离)可以被相应的加权。对于具体的加权方法，本实施例不作限制。
在步骤403中，与时域资源分配类似，如果上述可使用的频域资源不足以使得所述用户设备集合中所有具有相邻关系的用户设备的频域资源不同，则该基站可以循环利用上述可使用的频域资源对未分配频域资源的用户设备进行资源分配。并且，在循环利用上述可使用的频域资源对未分配频域资源的用户设备进行资源分配时，可以考虑干扰抑制，使得距离较远的两个用户设备使用相同的频域资源，以确保其相互干扰可以忍受或者低于某个门限值。
通过本实施例的方法，基站可以根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
在本实施例中，该资源分配的问题可以被建模为图论中的顶点着色问题，由此，该资源分配的问题被划分为时域资源分配和频域资源分配先后两个子问题，频域资源分配是可选的。并且，针对每个问题，可以分别构建用户设备的拓扑图，并分别对图的顶点进行着色。下面从图论的角度阐述本实施例的资源分配方法。
对于时域资源分配：
在本实施方式中，为了提高V2V消息的传输效率，如包接收率(packet reception ratio，PRR)，需要在时域资源分配中引入协调，以确保每个V2V消息的数据包周围 都有一定数量的用户设备来接收该数据包。否则半双工限制会大大降低V2V消息数据包的包接收率。尤其是用户设备成簇分布时，这种情况更为严重。对于周期性业务来说，时域资源分配就是确定每个周期性数据包流的子帧偏移。
图5是本实施方式的时域资源分配的一示意图，如图5所示，该时域资源分配的过程包括：
步骤501：以每个用户设备作为一个顶点，以每对用户设备的相邻关系作为这对用户设备所对应的顶点之间的边，构建图
Figure PCTCN2016072746-appb-000001
步骤502：用颜色集合Ct对图
Figure PCTCN2016072746-appb-000002
进行顶点着色。
在步骤501中，V为用户设备集合，可以表示为
Figure PCTCN2016072746-appb-000003
εt为用户设备之间的相邻关系集合，可以表示为
Figure PCTCN2016072746-appb-000004
通过构建上述图
Figure PCTCN2016072746-appb-000005
得到了用户设备的拓扑结构。在本实施方式中，如前所述，如果上述信道状态信息中的可选部分也被反馈，则这两个顶点之间的边可以被相应的加权。
在步骤502中，每个可以配置的发送时刻可以表示为一种颜色，所有可配置的发送时刻记为颜色集合
Figure PCTCN2016072746-appb-000006
利用该颜色集合
Figure PCTCN2016072746-appb-000007
可以对图
Figure PCTCN2016072746-appb-000008
进行顶点着色，本实施例对于具体的着色方法不做限制，图论中现有的成熟算法均可使用。
在本实施方式中，对于周期性业务，可配置的发送时刻例如为周期性业务的子帧偏移，并且可配置的发送时刻的个数可以等于该周期性业务的周期。
在本实施方式中，如果可配置的颜色太少，不足以对图
Figure PCTCN2016072746-appb-000009
中的所有顶点进行着色，也即
Figure PCTCN2016072746-appb-000010
那么可配置的颜色可以复用。例如，可以把颜色集合
Figure PCTCN2016072746-appb-000011
作为一个循环链表。当最后一个可用颜色
Figure PCTCN2016072746-appb-000012
用完之后，第一个颜色
Figure PCTCN2016072746-appb-000013
会作为下一个新的颜色重新使用。
通过图5的方法，实现了时域资源的分配。
对于频域资源分配：
在本实施方式中，时域资源分配之后，所有的用户设备可以分为若干个组，也即
Figure PCTCN2016072746-appb-000014
其中，每组中的用户设备的发送时刻相同，对应于时域资源分配中被着以相同颜色的顶点。频域资源分配需要对具有相同颜色的每组用户设备中的每个用户设备进行。
图6是本实施方式的频域资源分配的一示意图，不失一般性，在该示例中，以组 Vi为例，如图6所示，该频域资源分配的过程包括：
步骤601：以组Vi中的每个用户设备作为一个顶点，以组Vi中的每对用户设备的相邻关系作为每对用户设备所对应的顶点之间的边，构建图
Figure PCTCN2016072746-appb-000015
Figure PCTCN2016072746-appb-000016
步骤602：用颜色集合Cf对图
Figure PCTCN2016072746-appb-000017
进行顶点着色。
在步骤601中，Vi为组Vi中的用户设备集合，可以表示为
Figure PCTCN2016072746-appb-000018
Figure PCTCN2016072746-appb-000019
为用户设备之间的相邻关系集合，可以表示为
Figure PCTCN2016072746-appb-000020
通过构建上述图
Figure PCTCN2016072746-appb-000021
得到了组Vi中的用户设备的拓扑结构。
在本实施方式中，与时域资源分配相比，频域资源分配中的“相邻关系”有更广的含义。不仅包括基于上述信道状态信息反馈的相邻关系，而且还包括两个用户设备间的干扰大于某个干扰门限和/或两个用户设备之间的距离小于某个距离门限的相邻关系。在本实施方式中，这里的“距离”指两个顶点之间最短路径所含边的个数。在本实施方式中，如前所述，如果上述信道状态信息中的可选部分也被反馈，则这两个顶点之间的“距离”可以被相应的加权。在本实施方式中，如前所述，干扰门限和距离门限可以预先定义或者由基站根据用户设备的速度、密度等特征灵活地配置。
在步骤602中，每个频域资源单元可以表示为一种颜色，所有颜色记为颜色集合
Figure PCTCN2016072746-appb-000022
利用该颜色集合
Figure PCTCN2016072746-appb-000023
可以对图
Figure PCTCN2016072746-appb-000024
进行顶点着色，本实施例对于具体的着色方法不做限制，图论中现有的成熟算法均可使用。
在本实施方式中，如果频域资源不够，或者说可配置的颜色太少，不足以对图
Figure PCTCN2016072746-appb-000025
中的所有顶点进行着色，也即
Figure PCTCN2016072746-appb-000026
那么类似的，该颜色(也即频域资源)可以复用。例如，可以把颜色集合
Figure PCTCN2016072746-appb-000027
作为一个循环链表。
在本实施方式中，在复用的过程中，可以考虑干扰抑制，也即，同样的颜色(相同的频域资源单元)在相隔较远的顶点间复用，以确保用户设备之间的相互干扰可以忍受或者低于某个门限值。
通过图6的方法，实现了频域资源的分配。
实施例3
本实施例提供了一种信道状态信息的反馈装置，该装置配置于用户设备，由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参考实施例1 的方法的实施，内容相同之处不再重复说明。
图7是该信道状态信息的反馈装置的一示意图，如图7所示，该装置700包括：发送单元701，其向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
可选的，该信道状态信息还可以包括以下任意一种或任意组合：
所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
从所述用户设备到每个邻居用户设备的距离的估计值；和/或
从所述用户设备到每个邻居用户设备的路损的估计值。
在本实施例中，该发送单元701可以通过物理上行信道，例如物理上行共享信道和/或物理上行控制信道，向所述基站反馈所述信道状态信息。
在一个实施方式中，如图7所示，该装置700还可以包括：
接收单元702，其接收上述基站发送的反馈请求。在该实施方式中，上述信道状态信息的反馈是被动触发的，也即，该发送单元701在该接收单元702接收到上述基站的上述反馈请求后，在向该基站反馈上述信道状态信息。
在另一个实施方式中，如图7所示，该装置700还可以包括：
检测单元703，其检测该用户设备的邻居用户设备的拓扑。在该实施方式中，上述信道状态信息的反馈是主动触发的，也即，该发送单元701在该检测单元703检测到上述用户设备的邻居用户设备的拓扑发生变化后，主动向所述基站反馈上述信道状态信息。
在本实施例中，该发送单元701可以周期性或者非周期性地进行上述反馈，和/或，该发送单元701可以反馈上述用户设备的所有邻居用户设备的信道状态信息，也可以反馈与之前的反馈相比不同的部分，和/或，该发送单元701可以每次反馈所述用户设备的一个或者部分邻居用户设备的信道状态信息，也可以每次反馈所述用户设备的所有邻居用户设备的信道状态信息。
通过本实施例的装置向基站反馈上述信道状态信息，基站可以根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
本实施例还提供了一种用户设备，配置有如前所述的信道状态信息的反馈装置 700。
图8是本发明实施例的用户设备800的系统构成的一示意框图。如图8所示，该用户设备800可以包括中央处理器801和存储器802；存储器802耦合到中央处理器801。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，信道状态信息的反馈装置的功能可以被集成到中央处理器801中。其中，中央处理器801可以被配置为实现实施例1所述的信道状态信息的反馈方法。
例如，该中央处理器801可以被配置为：向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
可选的，该信道状态信息还包括以下任意一种或任意组合：
所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
从所述用户设备到每个邻居用户设备的距离的估计值；和/或
从所述用户设备到每个邻居用户设备的路损的估计值。
可选的，该中央处理器801还可以被配置为：通过物理上行共享信道和/或物理上行控制信道向所述基站反馈所述信道状态信息。
可选的，该中央处理器801还可以被配置为：在接收到所述基站的反馈请求后向所述基站反馈所述信道状态信息。
可选的，该中央处理器801还可以被配置为：在检测到所述用户设备的邻居用户设备的拓扑发生变化后向所述基站反馈所述信道状态信息。
可选的，该中央处理器801还可以被配置为：周期性或者非周期性地进行上述反馈。
可选的，该中央处理器801还可以被配置为：反馈所述用户设备的所有邻居用户设备的信道状态信息，或者反馈与之前的反馈相比不同的部分。
可选的，该中央处理器801还可以被配置为：每次反馈一个或者部分邻居用户设备的信道状态信息，或者所述用户设备每次反馈其所有邻居用户设备的信道状态信息。
在另一个实施方式中，信道状态信息的反馈装置可以与中央处理器801分开配置，例如可以将信道状态信息的反馈装置配置为与中央处理器801连接的芯片，通过中央处理器801的控制来实现信道状态信息的反馈装置的功能。
如图8所示，该用户设备800还可以包括：通信模块803、输入单元804、音频处理单元805、显示器806、电源807。值得注意的是，用户设备800也并不是必须要包括图8中所示的所有部件；此外，用户设备800还可以包括图8中没有示出的部件，可以参考现有技术。
如图8所示，中央处理器801有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器801接收输入并控制用户设备800的各个部件的操作。
其中，存储器802，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述与信道状态信息信息，此外还可存储执行有关信息的程序。并且中央处理器801可执行该存储器802存储的该程序，以实现信息存储或处理等。其他部件的功能与现有类似，此处不再赘述。用户设备800的各部件可以通过专用硬件、固件、软件或其结合来实现，而不偏离本发明的范围。
通过本实施例的用户设备向基站反馈上述信道状态信息，基站可以根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
实施例4
本实施例提供了一种资源分配装置，配置于基站中，由于该装置解决问题的原理与实施例2的方法类似，其具体的实施可以参考实施例2的方法的实施，内容相同之处不再重复说明。
图9是本实施例的资源分配装置的一示意图，如图9所示，该装置900包括：接收单元901和分配单元902。
在本实施例中，该接收单元901接收用户设备反馈的信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识。对于该信道状态信息，已经在前述实施例中做了详细说明，其内容被合并于此，此处不再赘述。
在本实施例中，该分配单元902根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。本实施例对于具体的资源分配方式不做限制，以下举例说明。
在一个实施方式中，如图9所示，该分配单元902包括第一确定模块9021和第一分配模块9022，该第一确定模块9021根据每个用户设备反馈的信道状态信息，确定用户设备集合以及各用户设备之间的相邻关系集合；该第一分配模块9022利用可配置的发送时刻为各个用户设备分配资源。
在本实施方式中，如果所述可配置的发送时刻的数量不足以使得所述用户设备集合中具有相邻关系的用户设备的发送时刻不同，则该第一分配模块9022循环利用所述可配置的发送时刻对未分配时域资源的用户设备进行资源分配。
在本实施方式中，如果上述信道状态信息还包括以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则所述各用户设备之间的相邻关系被相应加权。
在另一个实施方式中，如图9所示，该分配单元902还可以包括第二分配模块9023，该第二分配模块9023根据各个用户设备反馈的信道状态信息，为发送时刻相同的用户设备分配资源。
在本实施方式中，如图10所示，该第二分配模块9023还可以包括：第二确定模块1001、第三确定模块1002、以及第三分配模块1003。
该第二确定模块1001确定所述发送时刻相同的用户设备的集合。
该第三确定模块1002根据所述信道状态信息以及所述发送时刻相同的用户设备之间的干扰和/或距离确定所述发送时刻相同的用户设备之间的相邻关系集合。
该第三分配模块1003利用可使用的频域资源为所述发送时刻相同的用户设备分配资源。
在本实施方式中，该第三确定模块1002在两个用户设备之间的干扰大于干扰门限时，确定所述两个用户设备之间存在相邻关系。
在本实施方式中，该第三确定模块1002在两个用户设备之间的距离小于距离门限时，确定所述两个用户设备之间存在相邻关系。
在本实施方式中，所述距离为两个用户设备之间的链路中，边的数量最小的链路的边的数量。
在本实施方式中，如果所述信道状态信息还包括以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则所述各用户设备之间的相邻关系被相应加权。
在本实施方式中，如果所述可使用的频域资源的数量不足以使得所述用户设备集合中所有具有相邻关系的用户设备的频域资源不同，则所述第三分配模块1003循环利用所述可使用的频域资源对未分配频域资源的用户设备进行资源分配。
通过本实施例的装置根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
本实施例还提供一种基站，该基站配置有如前所述的资源分配装置900。
图11是本发明实施例的基站的一构成示意图。如图11所示，基站1100可以包括：中央处理器(CPU)1101和存储器1102；存储器1102耦合到中央处理器1101。其中该存储器1102可存储各种数据；此外还存储信息处理的程序，并且在中央处理器1101的控制下执行该程序，以接收该用户设备发送的各种信息、并且向用户设备发送请求信息。
在一个实施方式中，资源分配装置的功能可以被集成到中央处理器1101中。其中，中央处理器1101可以被配置为实现实施例2所述的资源分配方法。
例如，该中央处理器1101可以被配置为：接收用户设备反馈的信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
可选的，在一个实施方式中，该中央处理器1101还可以被配置为：根据每个用户设备反馈的信道状态信息，确定用户设备集合以及各用户设备之间的相邻关系集合；利用可配置的发送时刻为各个用户设备分配资源。
可选的，如果所述可配置的发送时刻的数量不足以使得所述用户设备集合中具有相邻关系的用户设备的发送时刻不同，则该中央处理器1101还可以被配置为：循环利用所述可配置的发送时刻对未分配时域资源的用户设备进行资源分配。
可选的，如果所述信道状态信息还包括以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户 设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则该中央处理器1101还可以被配置为：对所述各用户设备之间的相邻关系进行相应加权。
可选的，在另一个实施方式中，该中央处理器1101还可以被配置为：根据各个用户设备反馈的信道状态信息，为所述发送时刻相同的用户设备分配频域资源。
可选的，该中央处理器1101可以被配置为：确定所述发送时刻相同的用户设备的集合；根据所述信道状态信息以及所述发送时刻相同的用户设备之间的干扰和/或距离确定所述发送时刻相同的用户设备之间的相邻关系集合；利用可使用的频域资源为所述发送时刻相同的用户设备分配资源。
可选的，如果两个用户设备之间的干扰大于干扰门限，则该中央处理器1101可以被配置为：确定所述两个用户设备之间存在相邻关系。
可选的，如果两个用户设备之间的距离小于距离门限，则该中央处理器1101可以被配置为：确定所述两个用户设备之间存在相邻关系。
可选的，所述距离为两个用户设备之间的链路中，边的数量最小的链路的边的数量。
可选的，如果所述信道状态信息还包括以下任意一种或任意组合：所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或从所述用户设备到每个邻居用户设备的距离的估计值；和/或从所述用户设备到每个邻居用户设备的路损的估计值，则该中央处理器1101还可以被配置为：对所述各用户设备之间的相邻关系进行相应加权。
可选的，如果所述可使用的频域资源的数量不足以使得所述用户设备集合中所有具有相邻关系的用户设备的频域资源不同，则该中央处理器1101还可以被配置为：循环利用所述可使用的频域资源对未分配频域资源的用户设备进行资源分配。
在另一个实施方式中，资源分配装置可以与中央处理器1101分开配置，例如可以将资源分配装置配置为与中央处理器1101连接的芯片，通过中央处理器1101的控制来实现资源分配装置的功能。
此外，如图11所示，基站1100还可以包括：收发机1103和天线1104等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1100也并不是必须要包括图11中所示的所有部件；此外，基站1100还可以包括图11中没有示 出的部件，可以参考现有技术。
通过本实施例的基站根据各个用户设备反馈的信道状态信息构建用户设备的拓扑，从而更好地为各个用户设备分配资源，降低了资源碰撞，并提高了信号质量。
实施例5
本实施例提供一种通信系统，包括如实施例4所述的基站以及如实施例3所述的用户设备。
图12是本发明实施例的通信系统的一构成示意图，如图12所示，该通信系统1200包括基站1201以及用户设备1202。其中，基站1201可以是实施例4中所述的基站1100；用户设备1202可以是实施例3所述的用户设备800。
例如，该用户设备1202可以被配置为：向基站1201反馈信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；该基站1201可以被配置为：接收用户设备1202反馈的所述信道状态信息，根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
由于在前述实施例中，已经对基站和用户设备进行了详细说明，其内容被合并于此，此处不再赘述。
通过本实施例的通信系统，用户设备将其邻居用户设备的信道状态信息反馈给基站，由此，基站可以根据各个用户设备反馈的信道状态信息为各个用户设备进行资源分配，降低了资源碰撞，并提高了信号质量。
本发明实施例还提供一种计算机可读程序，其中当在信息处理装置或用户设备中执行所述程序时，所述程序使得计算机在所述信息处理装置或用户设备中执行实施例1所述的信道状态信息的反馈方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在信息处理装置或用户设备中执行实施例1所述的信道状态信息的反馈方法。
本发明实施例还提供一种计算机可读程序，其中当在信息处理装置或基站中执行所述程序时，所述程序使得计算机在所述信息处理装置或基站中执行实施例2所述的资源分配方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在信息处理装置或基站中执行实施例2所述的资源分配方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的在信道状态信息的反馈装置中信道信息的反馈方法，或者在资源分配装置中资源分配方法可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图7或图9中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合(例如，…单元、…单元、…单元等)，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图1或图2所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(例如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对图7或图9描述的功能框图中的一个或多个和/或功能框图的一个或多个组合(例如…单元、…单元、…单元等)，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件、或者其任意适当组合。针对图7或图9描述的功能框图中的一个或多个和/或功能框图的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (20)

  1. 一种信道状态信息反馈装置，配置于用户设备，其中，该装置包括：
    发送单元，其向基站反馈信道状态信息，所述信道状态信息包括：所述用户设备与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识，以便所述基站根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
  2. 根据权利要求1所述的装置，其中，所述信道状态信息还包括以下任意一种或任意组合：
    所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
    从所述用户设备到每个邻居用户设备的距离的估计值；和/或
    从所述用户设备到每个邻居用户设备的路损的估计值。
  3. 根据权利要求1所述的装置，其中，所述发送单元通过物理上行共享信道和/或物理上行控制信道向所述基站反馈所述信道状态信息。
  4. 根据权利要求1所述的装置，其中，所述装置还包括：
    接收单元，其接收所述基站的反馈请求；
    所述发送单元在所述接收单元接收到所述基站的反馈请求后向所述基站反馈所述信道状态信息。
  5. 根据权利要求1所述的装置，其中，所述装置还包括：
    检测单元，其检测所述用户设备的邻居用户设备的拓扑；
    所述发送单元在所述检测单元检测到所述用户设备的邻居用户设备的拓扑发生变化后向所述基站反馈所述信道状态信息。
  6. 根据权利要求1所述的装置，其中，所述发送单元周期性或者非周期性地进行上述反馈。
  7. 根据权利要求1所述的装置，其中，所述发送单元反馈所述用户设备的所有邻居用户设备的信道状态信息，或者反馈与之前的反馈相比不同的部分。
  8. 根据权利要求1所述的装置，其中，所述发送单元每次反馈所述用户设备的一个或者部分邻居用户设备的信道状态信息，或者所述发送单元每次反馈所述用户设备的所有邻居用户设备的信道状态信息。
  9. 一种资源分配装置，配置于基站，其中，该装置包括：
    接收单元，其接收用户设备反馈的信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
    分配单元，其根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
  10. 根据权利要求9所述的装置，其中，所述分配单元包括：
    第一确定模块，其根据每个用户设备反馈的信道状态信息，确定用户设备集合以及各用户设备之间的相邻关系集合；
    第一分配模块，其利用可配置的发送时刻为各个用户设备分配资源。
  11. 根据权利要求10所述的装置，其中，如果所述可配置的发送时刻不足以使得所述用户设备集合中所有具有相邻关系的用户设备的发送时刻不同，则所述第一分配模块循环利用所述可配置的发送时刻对未分配时域资源的用户设备进行资源分配。
  12. 根据权利要求10所述的装置，其中，所述信道状态信息还包括以下任意一种或任意组合：
    所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
    从所述用户设备到每个邻居用户设备的距离的估计值；和/或
    从所述用户设备到每个邻居用户设备的路损的估计值；
    所述第一确定模块所确定的所述各用户设备之间的相邻关系被相应加权。
  13. 根据权利要求10所述的装置，其中，所述分配单元还包括：
    第二分配模块，其根据各个用户设备反馈的信道状态信息，为发送时刻相同的用户设备分配资源。
  14. 根据权利要求13所述的装置，其中，所述第二分配模块包括：
    第二确定模块，其确定所述发送时刻相同的用户设备的集合；
    第三确定模块，其根据所述信道状态信息以及所述发送时刻相同的用户设备之间的干扰和/或距离确定所述发送时刻相同的用户设备之间的相邻关系集合；
    第三分配模块，其利用可使用的频域资源为所述发送时刻相同的用户设备分配资源。
  15. 根据权利要求14所述的装置，其中，所述第三确定模块在两个用户设备之间的干扰大于干扰门限时，确定所述两个用户设备之间存在相邻关系。
  16. 根据权利要求14所述的装置，其中，所述第三确定模块在两个用户设备之间的距离小于距离门限时，确定所述两个用户设备之间存在相邻关系。
  17. 根据权利要求14所述的装置，其中，所述距离为两个用户设备之间的链路中，边的数量最小的链路的边的数量。
  18. 根据权利要求14所述的装置，其中，所述信道状态信息还包括以下任意一种或任意组合：
    所述用户设备接收到的来自每个邻居用户设备的信号强度；和/或
    从所述用户设备到每个邻居用户设备的距离的估计值；和/或
    从所述用户设备到每个邻居用户设备的路损的估计值；
    则所述各用户设备之间的相邻关系被相应加权。
  19. 根据权利要求14所述的装置，其中，如果所述可使用的频域资源不足以使得所述用户设备集合中所有具有相邻关系的用户设备的频域资源不同，则所述第三分配模块循环利用所述可使用的频域资源对未分配频域资源的用户设备进行资源分配。
  20. 一种通信系统，所述通信系统包括基站和用户设备，其中，
    所述用户设备被配置为：向基站反馈信道状态信息，所述信道状态信息包括：与邻居用户设备之间的链路的链路标识，和/或所述邻居用户设备的用户设备标识；
    所述基站被配置为：接收用户设备反馈的所述信道状态信息，根据各个用户设备反馈的信道状态信息为各个用户设备分配资源。
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