WO2015042849A1 - 一种数据传输方法和装置 - Google Patents

一种数据传输方法和装置 Download PDF

Info

Publication number
WO2015042849A1
WO2015042849A1 PCT/CN2013/084404 CN2013084404W WO2015042849A1 WO 2015042849 A1 WO2015042849 A1 WO 2015042849A1 CN 2013084404 W CN2013084404 W CN 2013084404W WO 2015042849 A1 WO2015042849 A1 WO 2015042849A1
Authority
WO
WIPO (PCT)
Prior art keywords
codebook
base station
terminal
data transmission
cooperation
Prior art date
Application number
PCT/CN2013/084404
Other languages
English (en)
French (fr)
Inventor
张舜卿
陈雁
李云岗
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to AU2013401795A priority Critical patent/AU2013401795A1/en
Priority to RU2016116244A priority patent/RU2633370C1/ru
Priority to BR112016006537-9A priority patent/BR112016006537B1/pt
Priority to PCT/CN2013/084404 priority patent/WO2015042849A1/zh
Priority to CN201380079395.2A priority patent/CN105766056B/zh
Priority to CA2924638A priority patent/CA2924638C/en
Priority to KR1020167009914A priority patent/KR101879963B1/ko
Priority to EP13894565.4A priority patent/EP3051923B1/en
Publication of WO2015042849A1 publication Critical patent/WO2015042849A1/zh
Priority to US15/080,593 priority patent/US9967010B2/en
Priority to AU2017279700A priority patent/AU2017279700B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478Special codebook structures directed to feedback optimisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/005Interference mitigation or co-ordination of intercell interference
    • H04J11/0053Interference mitigation or co-ordination of intercell interference using co-ordinated multipoint transmission/reception

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • Base station cooperative transmission refers to a plurality of base stations separated geographically, cooperatively participating in data transmission for one terminal or jointly receiving data transmitted by one terminal, and multiple base stations participating in cooperation generally refer to base stations of different cells.
  • the base station cooperation technology places the edge users on the same frequency of several base stations, and several base stations simultaneously serve the users to improve the coverage performance of the edge users.
  • the use of base station cooperation can reduce inter-cell interference, which is mainly to improve the spectrum efficiency of cell edge users.
  • the amount of information exchanged between network nodes is large, which results in complicated data transmission in the cooperation process, and has a large impact on the network backhaul system, and the network transmission efficiency is low.
  • the present invention provides a data transmission method and apparatus, which can solve the problem of large network interaction information overhead in a base station cooperative communication system.
  • embodiments of the present invention adopt the following technical solutions:
  • an embodiment of the present invention provides a base station, including: a receiver, configured to receive a codebook command sent by a controller, where the codebook command is used to specify a codebook that can be used by a base station in data transmission with a terminal, and a codebook.
  • the sparse code common codebook set is a set of sparse code codebooks that can be used for data transmission by each base station in the cooperative set, and the cooperation set is a set and cooperation of base stations that provide data transmission to the same terminal.
  • the centralized base station is different from the codebook that can be used in the terminal data transmission;
  • the transmitter is configured to send a codebook notification to the terminal, and the codebook notification is used to notify the terminal to the cooperation codebook, and the cooperation codebook is the base station in the cooperative set.
  • a codebook used for data transmission with the terminal, and the cooperative codebook belongs to a codebook specified by the codebook instruction received by the base station in the cooperation set;
  • the processor is configured to use the collaboration codebook to perform data transmission with the terminal.
  • the transmitter is further configured to: send a codebook request to the controller, where the codebook request carries information about a minimum number of codebooks required by the base station, so as to facilitate the controller. Allocating a codebook that can be used by the base station in data transmission according to the minimum codebook number;
  • the codebook instruction is further used to specify a codebook that is not less than the minimum number of codebooks that the base station can use in performing data transmission.
  • a second possible implementation manner of the first aspect is further provided, where the processor is further configured to: The number of streams determines the minimum number of codebooks required, where the minimum number of codebooks is not less than the number of streams.
  • the receiver is further configured to receive control The sparse code common codebook set sent by the processor; the processor is further configured to determine, in the sparse code common codebook set, the codebook that the base station can use in the data transmission according to the codebook instruction.
  • a fourth possible implementation manner of the first aspect is further provided, where the codebook instruction further includes The collaboration set information is further used by the processor to determine, according to the collaboration set information, a collaboration set to which the codebook instruction applies.
  • a fifth possible implementation manner of the first aspect is further provided, where the transmitter is further used And transmitting the sparse code common codebook set to the terminal, so that the terminal receives and saves the sparse code common codebook set, and the terminal is configured to determine, according to the codebook notification, the cooperative codebook for data transmission from the base station from the sparse code common codebook set.
  • an embodiment of the present invention provides a controller, including: a processor, configured to determine a collaboration set, where the cooperation set is a base station that provides data transmission to the same terminal. And a transmitter, configured to send a codebook instruction to each base station in the cooperation set, where the codebook instruction is used to specify a codebook that can be used by each base station in the cooperation set in the data transmission with the terminal, and each base station is in data transmission.
  • the codebooks that can be used belong to the sparse code common codebook set and are different from each other.
  • the sparse code common codebook set is a set of sparse codebooks that can be used for data transmission by each base station in the cooperative set.
  • the controller further includes a receiver, configured to receive a codebook request sent by each base station in the cooperation set, where the codebook request carries a minimum codebook required by the base station a quantity of information; the processor is further configured to determine, according to the minimum number of pieces of information, a proportion of a minimum number of codebooks of each base station in the cooperation set, and determine, according to a ratio of the minimum number of codebooks, each base station in the cooperation set and the terminal The proportion of the number of codebooks that can be used in data transmission.
  • a second possible implementation manner of the second aspect is further provided, where the codebook instruction is further used to specify each collaboration set A codebook that can be used by a base station in not less than the minimum number of codebooks in data transmission.
  • the codebook instruction further includes a collaboration set The information, the cooperation set information is used by the base station that receives the codebook instruction to determine the cooperation set to which the codebook instruction applies according to the cooperation set information.
  • a fourth possible implementation manner of the second aspect is further provided, where the transmitter is further used Transmitting a sparse code common codebook set to each base station in the cooperation set, so that each base station in the cooperation set receives and saves the sparse code common codebook set, and facilitates each base station in the cooperation set to follow the codebook instruction from the sparse code.
  • the common codebook set determines a cooperative codebook for data transmission with the terminal, and the cooperative codebook is a codebook used for data transmission between the base station and the terminal in the cooperative set.
  • an embodiment of the present invention provides a terminal, including: a receiver, configured to receive a codebook notification sent by at least one base station in a collaboration set, where the codebook notification is used by at least one base station to notify a terminal of a collaboration codebook, and cooperate
  • the codebook is a sparse code codebook used for data transmission by at least one base station and a terminal
  • the cooperation set is a base station that provides data transmission to the same terminal.
  • the set of base stations in the cooperative set and the sparse code codebooks that can be used in the terminal data transmission are different from each other;
  • a processor configured to perform data transmission with the at least one base station by using the cooperative codebook.
  • the receiver is further configured to receive and save a sparse code common codebook set sent by the base station in the cooperation set;
  • the processor is further configured to determine the collaborative codebook in the sparse code common codebook set according to the codebook notification.
  • the processor is further configured to: use a cooperative codebook pair At least one data stream sent by the received at least one base station is decoded.
  • a third possible implementation manner of the third aspect is further provided, if the processor is configured to at least one data If the decoding fails, the terminal further includes: a transmitter, configured to send a retransmission request to the base station that sends the data stream that fails to decode, and the retransmission request is used to retransmit the decoding of the base station that requests the data stream that fails to be decoded. Failed data flow.
  • an embodiment of the present invention provides a data transmission method, including: receiving, by a base station, a codebook command sent by a controller, where the codebook command is used to specify a codebook that can be used by a base station in data transmission with a terminal, where the codebook belongs to Sparse code common codebook set, the sparse code common codebook set is a set of sparse code codebooks that can be used for data transmission by each base station in the cooperative set, and the cooperative set is a set of base stations that provide data transmission to the same terminal and collaborate concentrated.
  • the base station is different from the codebook that can be used in the terminal data transmission;
  • the base station sends a codebook notification to the terminal, where the codebook notification is used to notify the terminal of the cooperation codebook, and the cooperation codebook is a codebook used by the base station and the terminal in the cooperation set to perform data transmission, and the cooperative codebook belongs to the base station in the cooperation set.
  • the base station uses the cooperative codebook to perform data transmission with the terminal.
  • the method before the base station receives the codebook command sent by the controller, the method further includes: Sending a codebook request to the controller, where the codebook request carries information about the minimum number of codebooks required by the base station, so that the controller allocates the codebooks that the base station can use in the data transmission according to the minimum number of codebooks;
  • the codebook instruction is further used to specify a codebook that is not less than the minimum number of codebooks that the base station can use in performing data transmission.
  • a second possible implementation manner of the fourth aspect is further provided, where the base station determines, according to the number of data flows in the data transmission, The minimum number of codebooks required, where the minimum number of codebooks is not less than the number of data streams.
  • a third possible implementation manner of the fourth aspect is further provided, where the base station sends a codebook notification to the terminal
  • the method further includes: the base station receiving the sparse code common codebook set sent by the controller; and the base station determining, according to the codebook instruction, the codebook that the base station can use in the data transmission in the sparse code common codebook set.
  • the codebook instruction further includes The collaboration set information, the base station determines the cooperation set to which the codebook instruction applies according to the cooperation set information.
  • the base station sends a code to the terminal Before the notification, the method further includes: the base station transmitting the sparse code common codebook set to the terminal, so that the terminal receives and saves the sparse code common codebook set, and the terminal is configured to determine, according to the codebook notification, the base station from the sparse code common codebook set. Cooperative codebook for data transmission.
  • an embodiment of the present invention provides a data transmission method, where: the controller determines a cooperation set, where the cooperation set is a set of base stations that provide data transmission to the same terminal; the controller sends to each base station in the cooperation set.
  • the codebook instruction is used to specify a codebook that can be used by each base station in the cooperation set in the data transmission with the terminal.
  • the codebook that can be used by each base station in the data transmission belongs to the sparse code common codebook set and does not mutually Same, sparse code common codebook A set of sparse codebooks that can be used for data transmission by each base station in the cooperative set.
  • the method before the controller sends the codebook command to each of the base stations in the cooperation set, the method further includes: the controller receiving the codebook request sent by each base station in the cooperation set, the code The request carries information about the minimum number of codebooks required by the base station; the controller determines the proportion of the minimum codebook number of each base station in the cooperation set according to the minimum codebook quantity information; the controller according to the ratio of the minimum codebook quantity, The ratio of each base station in the collaboration set to the number of codebooks that can be used in the terminal data transmission is determined.
  • a second possible implementation manner of the fifth aspect is further provided, where the codebook instruction is further used to specify each collaboration set.
  • the codebook instruction further includes a collaboration set The information, the cooperation set information is used by the base station that receives the codebook instruction to determine the cooperation set to which the codebook instruction applies according to the cooperation set information.
  • the fourth possible implementation manner of the fifth aspect is further provided, Before each base station sends the codebook command, the method further includes: the controller sending the sparse code common codebook set to each base station in the cooperation set, so that each base station in the cooperation set receives and saves the sparse code common codebook set, and Each base station in the cooperation set determines a cooperative codebook for data transmission from the sparse code common codebook set according to the codebook command, and the cooperative codebook is a codebook used for data transmission by the base station and the terminal in the cooperative set.
  • an embodiment of the present invention provides a data transmission method, where: a terminal receives a codebook notification sent by at least one base station in a collaboration set, and the codebook notification is used by at least one base station to notify the terminal of the collaboration codebook, and cooperates.
  • the codebook is a sparse code codebook used by at least one base station to perform data transmission with the terminal
  • the cooperative set is a set of base stations that provide data transmission to the same terminal, and the sparse code codebook that the cooperative centralized base station can use in the terminal data transmission. Different from each other;
  • the terminal uses the cooperative codebook to perform data transmission with at least one base station.
  • the method before the terminal receives the codebook notification sent by the at least one base station in the collaboration set, the method further includes:
  • the terminal receives and saves the sparse code common codebook set sent by the base station in the cooperation set; and the terminal determines the collaboration codebook in the sparse code common codebook set according to the codebook notification.
  • the terminal uses the codebook to notify the notified cooperative codebook
  • the data transmission with the at least one base station is specifically: the terminal decodes the at least one data stream sent by the received at least one base station by using the cooperative codebook.
  • the third possible implementation manner of the sixth aspect is further provided, if the terminal is configured to at least one data stream If the decoding fails, the method further includes: the base station sends a retransmission request by the base station that sends the decoded data stream, and the retransmission request is used to request the base station that sends the decoded data stream to resend the data stream that fails to be decoded.
  • the present invention utilizes the sparse code codebook that can be used in the data transmission of the terminal in the cooperative centralized base station to realize the independent data transmission between the base station and the terminal, and does not require data interaction and channel information interaction between the base stations.
  • the overhead of the system is reduced, and the efficiency of network transmission is improved.
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of another data transmission method according to an embodiment of the present invention
  • 4A is a schematic diagram of a data transmission scenario according to an embodiment of the present invention
  • FIG. 4B is a flowchart of another data transmission method according to an embodiment of the present invention
  • 4C is a schematic diagram of a method for exchanging information between a controller and a base station according to an embodiment of the present invention
  • 4D is a schematic diagram of a method for interacting information between a base station and a terminal according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another data transmission scenario according to an embodiment of the present disclosure.
  • FIG. 5B is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 5C is a schematic diagram of another method for interacting information between a controller and a base station according to an embodiment of the present invention.
  • 5D is a schematic diagram of another method for interacting information between a controller and a base station according to an embodiment of the present invention.
  • 5E is a schematic diagram of another method for interacting information between a base station and a terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7A is a schematic diagram of a controller according to an embodiment of the present invention.
  • FIG. 7B is a schematic diagram of another controller according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 8B is a schematic diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 10A is a schematic diagram of another controller according to an embodiment of the present invention.
  • FIG. 10B is a schematic diagram of another controller according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 11B is a schematic diagram of another terminal according to an embodiment of the present invention. detailed description
  • Embodiment 1 Multiple access refers to a method of simultaneously accessing multiple users within a specified radio resource. Common multiple access methods include Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), and Code Division Multiple Access (CDMA). And Orthogonal Frequency Division Multiple Access (OFDMA).
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • CDMA Code Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • Sparse Code Multiple Access is a method that uses low-density sparse codes to be extended in a specific time-frequency domain and achieves simultaneous access by a large number of users in a non-orthogonal manner. The number is larger than the number of orthogonal resource blocks, thereby improving the utilization of resource blocks.
  • Base station cooperative transmission refers to multiple base stations separated by geographical location, cooperatively participating in data transmission for one terminal or jointly receiving data transmitted by one terminal.
  • the sparse code codebook in the sparse code common codebook set is used by the base station in the terminal access cooperative set.
  • this embodiment provides a data transmission method. As shown in FIG. 1, the specific process is as follows:
  • the base station receives the codebook command sent by the controller.
  • the base station provided in this embodiment includes a plurality of devices including a power amplifier (PA), such as a base station or a relay in various forms in a communication system, and an access point (AP).
  • PA power amplifier
  • AP access point
  • the base station receives a codebook command sent by the controller, where the codebook command includes the cooperation set information, and the base station determines, according to the cooperation set information, a cooperation set to which the codebook instruction applies.
  • the base station 0 when the base station 0 belongs to the cooperation set 0 and the cooperation set 1 at the same time, when the controller sends the codebook instruction 0 to the base station, it also specifies that the codebook instruction 0 is applicable to the cooperation set 0, or when the controller sends the codebook instruction 1 to the base station, The specified codebook instruction 1 applies to the collaboration set 1.
  • the base station After receiving the codebook command sent by the controller, the base station can determine at least one codebook in the common codebook set of the sparse code of the cooperation set that can be used in the data transmission.
  • the codebook command may be, but is not limited to, carrying the codebook information in multiple forms, such as directly carrying the codebook itself, or carrying the codebook index number, the codebook serial number, and the like.
  • the sparse code common codebook set is capable of being used for each of the collaborative sets A set of sparse codebooks used by the base station for data transmission. It is important to note that the codebooks assigned by the controller to each base station are different from each other.
  • the sparse code codebook in the sparse code common codebook set is used by the base station in the terminal access cooperative set. When performing data transmission, the base station needs to use the codebook in the sparse code common codebook set to complete terminal access and data transmission.
  • the number of access users allowed by the SCMA is greater than the number of orthogonal resource blocks.
  • the number of orthogonal resource blocks is 20, but the number of users that can actually access is 30.
  • Non-orthogonal multi-user access mode can greatly increase the number of user accesses on limited radio resources, thereby increasing the utilization rate of resource blocks.
  • the sparse code common codebook set may be specifically:
  • the sparse code access codebook set is a set of sparse code codebooks that can be used by all or part of the base station for access.
  • the sparse code codebook may be, but is not limited to, calculated or searched by a computer. The calculation or search method of the sparse code codebook can use well-known technical means, and details are not described herein again.
  • the sparse code common codebook set may be composed of at least one codebook that can be used for base station cooperation in the sparse code access codebook set, that is, the sparse code common codebook set is a non-empty subset of the sparse code access codebook set.
  • each base station may be different, that is, the sparse code codebook supported by each base station may be different.
  • the sparse code access code set supported by each base station in the cooperation set providing data transmission to the same terminal is different, the sparse code common codebook set may be accessed by the sparse code to each base station in the cooperation set in the codebook set.
  • the method for the base station to obtain the common codebook set of the sparse code may be specifically: the base station can receive and save the sparse code common codebook set sent by the controller before receiving the codebook command sent by the controller.
  • the method for the base station to obtain the common codebook set of the sparse code may be specifically: the operator directly sets and saves the available sparse code common codebook set in the process of network planning or network optimization, so that the base station directly Use; or during the operation of the network, by related network control nodes, such as Mobility Management Entity ( ⁇ ), etc.
  • the sparse code common codebook set is set or updated and saved for direct use by the base station.
  • the base station can obtain the codebook number carried according to the obtained sparse code common codebook set and the codebook command. , Determine the codebook that can be used in data transmission.
  • the base station may send a codebook request to the controller, where the codebook request carries information about a minimum number of codebooks required by the base station, so that the controller is based on the minimum code. This number is assigned to the codebook that the base station can use in performing data transmission.
  • the base station can send a codebook request carrying the minimum codebook quantity information required by the base station to the controller according to the actual needs of its own operation.
  • the method for determining, by the base station, the minimum number of codebooks required by the base station may be specifically: The base station determines, according to the number of data streams in the data transmission, that the minimum number of codebooks is not less than the number of data streams. For example, when the base station 5 serves the terminal, two data streams are required to meet the data transmission requirement of the terminal, and the minimum number of codebooks reported by the base station 5 is 2.
  • the base station can also report the minimum number of codebooks larger than the number of data streams according to actual requirements. For example, based on the traffic volume model and the like, it can predict that the data transmission to be started requires an additional data stream for bearer.
  • the controller can obtain the minimum codebook quantity information required by each base station according to the codebook request sent by each base station in the acquired cooperation set, and can be used in the data transmission of each base station in the cooperation set.
  • the number of codebooks in the code common codebook set is allocated, and the codebook command is sent to the base station.
  • the codebook command is further used to specify a codebook that is not less than the minimum codebook number that the base station can use in performing data transmission.
  • the base station receives the codebook command sent by the controller to determine a codebook that can be used for data transmission.
  • the base station sends a codebook notification to the terminal.
  • the base station sends a codebook notification to the terminal to inform the terminal of the cooperation code used when performing data transmission.
  • the codebook notification may be, but is not limited to, information carrying the codebook in various forms, such as directly carrying the codebook itself, or carrying the codebook index number, the codebook serial number, and the like.
  • the base station may determine the collaboration codebook in the codebook specified by the codebook instruction included in the saved sparse code common codebook set.
  • the method for determining the cooperative codebook by the base station may be a method of random selection, or the base station or the terminal may perform matching between the terminal and the codebook according to a certain rule, where the rule may be, but is not limited to, a channel quality indicator (Channel Quality) Indicator, CQI), etc., the matching method may use any known technical means, and will not be described here.
  • the base station may determine, according to the number of data streams in the data transmission, the same codebook as the number of data streams from the codebook specified in the codebook instruction as the cooperative codebook.
  • the cooperative codebook is a codebook used for data transmission between the base station and the terminal.
  • the base station may send the acquired sparse code common codebook set to the terminal, so that the terminal receives and saves the sparse code common codebook set, and facilitates the terminal to save according to the codebook notification.
  • the sparse code common codebook set determines that the codebook specified by the codebook is used for data transmission.
  • the terminal may notify the carried codebook number according to the obtained sparse code common codebook set and the codebook. Determine the codebook used in the data transmission.
  • the base station uses the cooperative codebook to perform data transmission with the terminal.
  • the base station performs a codebook mapping on the data stream that needs to be transmitted by using the cooperative codebook, and sends the data stream after the codebook mapping to the terminal.
  • the method of the codebook mapping may use a well-known technical means, and details are not described herein again.
  • SCMA access mode non-orthogonal multi-user access is implemented through the sparse code, and the number of user accesses on the limited radio resources is greatly improved, and the base station can independently process the information, Data interaction between the base stations and channel information are required, which reduces the overhead of the system and improves the efficiency of network transmission.
  • Embodiment 2 In the communication system of the SCMA, this embodiment provides a data transmission method, as shown in FIG. 2, the specific process is as follows: 201: The controller determines a collaboration set.
  • the cooperative set is a set of base stations that provide data transmission to the same terminal, and may be combined by using a dynamic, semi-dynamic, or static method. The combined method of the cooperative set may use a well-known technical means, and details are not described herein again.
  • the controller sends a codebook instruction to each base station in the collaboration set.
  • the controller sends a codebook instruction to each base station in the cooperation set, and specifies at least one codebook located in the coherent code common codebook set of the cooperation set that can be used by each base station in the cooperation set in performing data transmission.
  • the codebook command may be, but is not limited to, carrying the codebook information in multiple forms, such as directly carrying the codebook itself, or carrying the codebook index number, the codebook serial number, and the like.
  • the sparse code common codebook set is a set of sparse codebooks that can be used for data transmission by each base station in the cooperative set. It is important to note that the codebooks assigned by the controller to each base station are different from each other.
  • the SCMA can implement the number of access users larger than the number of orthogonal resource blocks, and greatly increase the number of user accesses on the limited radio resources, thereby improving the utilization of resource blocks.
  • the base station receives the codebook command sent by the controller, where the controller further needs to specify a collaboration set to which the codebook instruction applies.
  • the controller sends the codebook instruction 0 to the base station, it is also required to specify that the codebook instruction 0 is applicable to the cooperation set 0, or when the controller sends the codebook instruction 1 to the base station, It is also necessary to specify codebook instruction 1 for collaboration set 1.
  • the controller obtains the sparse code common codebook set, which may be specifically:
  • the sparse code access codebook set is a set of sparse code codebooks that may be used by all or part of the base station for access.
  • the sparse code codebook may be, but is not limited to, calculated or searched by a computer.
  • the calculation or search method of the sparse code codebook may use well-known technical means, and details are not described herein again.
  • the controller determines, from the sparse code access codebook set, at least one codebook that can be used for base station cooperation to form a sparse code common codebook set, that is, the sparse code common codebook set is a non-empty subset of the sparse code access codebook set.
  • each base station may be different, that is, the sparse code access code set supported by each base station may be different.
  • the controller determines, from the sparse code access codebook set, each base station supported by at least one cooperation set.
  • the codebook constitutes a sparse code common codebook set.
  • the controller obtains the sparse code common codebook set.
  • the controller may also be specifically: The operator directly uses the available sparse code common codebook set in the process of network planning or network optimization.
  • the relevant code control set such as MME, sets or updates the sparse code common codebook set and saves it for direct use by the controller.
  • the controller sends a codebook command to each base station in the cooperation set, where the codebook command carries a non-empty subset of the common codebook set of the sparse code determined by the controller, and is used to specify at least one that the base station can use in performing data transmission.
  • a codebook located in a sparse code common codebook set specifies that the codebook can use the codebook number to identify the codebook when the codebook can be used for data transmission, and only sends the codebook number instead of the codebook when transmitting the codebook command.
  • the controller may send the sparse code common codebook set to each base station in the cooperation set, so that the base station receives and saves the sparse code common codebook set, and The base station determines the codebook specified by the codebook instruction from the saved sparse code common codebook set for data transmission.
  • the base station can obtain the codebook number carried according to the obtained sparse code common codebook set and the codebook command. , Determine the codebook that can be used in data transmission.
  • the controller may receive a codebook request sent by each base station in the cooperation set, where the codebook request carries the minimum codebook required by the base station.
  • the amount of information The number of data streams that each base station actually needs to use is different, and the amount of traffic to be borne is different. Therefore, the minimum number of codebooks required during data transmission is also different.
  • the base station can send a codebook request carrying the minimum codebook quantity information required by the base station to the controller according to the actual needs of its own operation.
  • the controller can obtain the minimum number of codebooks required by each base station in the collaboration set. Further optionally, after receiving the codebook request, the controller specifies that the base station is in data transmission.
  • the method of the codebook that can be used may be specifically: the controller may obtain the minimum number of codebooks required by each base station according to the codebook request sent by each base station in the received cooperation set, and according to the needs of each base station.
  • the ratio of the minimum number of codebooks is allocated to the number of codebooks in the sparse code common codebook set that can be used by each base station in the cooperation set for data transmission. For example, the number of codebooks in the common codebook set of the sparse code is 6, the number of minimum codebooks reported by the base station 1 is 2, and the minimum number of codebooks reported by the base station 2 is 1, the controller can allocate 4 codebooks. To the base station 1, two codebooks are allocated to the base station 2.
  • the controller may appropriately adjust the codebook allocation manner according to specific situations, for example, when the number of codebooks in the common codebook set of the sparse code is proportionally assigned to a non-integer number, the method may be, but is not limited to, rounding or rounding.
  • the number of codebooks allocated to each base station in the collaboration set is determined. For example, the number of codebooks in the common codebook set of the sparse code is 8, the number of minimum codebooks reported by the base station 3 in the cooperation set is 2, and the minimum number of codebooks reported by the base station 4.
  • the controller can allocate 5 codebooks to the base station 3 according to the rounding method, and allocate 3 codebooks to the base station. 4. It is also possible to allocate 5 codebooks to the base station 3 according to the rounding down method, and allocate 2 codebooks to the base station 4. After the allocation of the number of codebooks is completed, the controller specifies a codebook that the base station can use in data transmission not less than the minimum number of codebooks, and sends a codebook command to inform the base station.
  • Embodiment 3 In the communication system of the SCMA, this embodiment provides a data transmission method, as shown in FIG. 3, the specific process is as follows:
  • the terminal receives the codebook notification sent by the base station in the collaboration set.
  • the base station determines the collaboration codebook used when the terminal performs data transmission, and sends a codebook notification.
  • the codebook notification is used by the base station to notify the terminal of the collaboration codebook.
  • the codebook notification may be, but is not limited to, information carrying the codebook in various forms, such as directly carrying the codebook itself, or carrying the codebook index number, the codebook serial number, and the like. It is important to note that the cooperative codebooks of each base station in the collaboration set are different from each other.
  • the terminal After receiving the codebook notification, the terminal can determine the codebook that can be used in the process of data transmission.
  • the sparse code codebook in the sparse code common codebook set is used by the base station in the terminal access cooperative set.
  • the terminal needs to use the codebook in the sparse code common codebook set to complete terminal access and data transmission.
  • the SCMA can implement the number of access users larger than the number of orthogonal resource blocks, and greatly increase the number of user accesses on the limited radio resources, thereby improving the utilization of resource blocks.
  • the method for the terminal to obtain the common codebook set of the sparse code may be specifically: before receiving the codebook notification sent by the base station in the cooperation set, the terminal may receive and save the sparse code common codebook set sent by the base station in the cooperation set.
  • each base station in the cooperation set may send the sparse code common codebook set to the terminal during data transmission.
  • the method for obtaining the common codebook set of the sparse code by the terminal may be specifically: setting, by the manufacturer or the like, the common codebook set of the sparse code in the manufacturing process of the terminal, and saving the terminal for direct use; or in the network During the running process, the related code control node sets or updates the sparse code common codebook set and saves it for direct use by the terminal.
  • the terminal may notify the carried codebook number according to the obtained sparse code common codebook set and the codebook. Determine the codebook that can be used in data transmission.
  • the terminal uses the codebook to notify the coordinated codebook to perform data transmission with the base station.
  • the terminal may obtain the collaboration codebook from the codebook notification.
  • the terminal uses the cooperation codebook to decode the received at least one data stream.
  • the method for the terminal to use the collaboration codebook to decode the received at least one data stream may be specifically: The terminal decodes at least one data stream transmitted by each base station received in the cooperation set using the cooperative codebook.
  • the method for decoding the terminal may be joint decoding, to respectively solve the data stream 6 and the data stream 7, where The method of joint decoding is a well-known technical means, and will not be described again.
  • the terminal if the terminal fails to decode the at least one data stream, the terminal sends a retransmission request to the base station that sends the data stream that fails to be decoded, where the retransmission request is used for the base station that requests the data stream that fails to be decoded. Resend the data stream that failed to decode.
  • the retransmission method may be, but is not limited to, an existing technology such as an automatic repeat request (ARQ) or a hybrid automatic repeat request (HQQ), and is not described here.
  • the base station can process the information independently, and does not need to perform data interaction and channel information interaction between the base stations, thereby reducing system overhead and improving network transmission efficiency.
  • the terminal can separately receive and process different data streams sent from different base stations, and independently retransmit the data stream, the complexity of the data transmission process of the network is greatly reduced, and the efficiency of network transmission is improved.
  • the base station controlled and managed by the controller Controlle includes the BS41 and the BS42, and the terminal UE4 is in the common coverage range of the BS41 and the BS42, and requests the BS41 and the BS42 to perform data transmission, as shown in FIG. 4A.
  • Controller4 confirms that a cooperative set consisting of BS41 and BS42 provides data transmission services for UE4.
  • This embodiment provides a data transmission method. As shown in FIG. 4B, the specific process is as follows:
  • the controller determines a collaboration set.
  • the Controller 4 determines that the cooperative set is composed of the BS 41 and the BS 42 and performs data transmission for the UE 4.
  • the controller sends a codebook instruction to each base station in the collaboration set.
  • the controller 4 sends the codebook instructions 141 and 142 to the BS41 and the BS42 in the cooperation set respectively.
  • the base station receives the codebook command sent by the controller. After receiving the codebook instructions 141 and 142, respectively, the BS 41 and the BS 42 in the cooperative set can determine the codebook that can be used in the process of data transmission.
  • the base station sends a codebook notification to the terminal.
  • the BS 41 sends a codebook notification N41 to the UE4, and informs the UE4 that the C42 codebook needs to be used to access the BS 441.
  • the BS 42 sends a codebook notification N42 to the UE4, and informs the UE4 that it needs to access the BS 42 by using C44 and C45, as shown in FIG. 4D.
  • the terminal receives the codebook notification sent by the base station in the collaboration set. After receiving the codebook notifications N41 and N42 sent by the BS 41 and the BS 42 respectively, the UE 4 can determine the codebook that can be used in the process of performing data transmission, that is, the UE 4 uses C42 in the data transmission with the BS 41, C44 and C45 are used for data transmission by BS42.
  • the base station and the terminal use the cooperative codebook to perform data transmission.
  • the BS 41 transmits the data stream D41 to the UE4, and performs the mapping of the D41 with the C42, the BS42 transmits the data streams D42 and D43 to the UE4, and performs the codebook mapping of the D42 and the D43 with the C44 and C45, respectively, and the data stream actually transmitted by the BS41.
  • the base station controlled and managed by the controller Controlle includes BS51, BS52, and BS53, and the terminal UE5 is in the common coverage range of BS51, BS52, and BS53, as shown in FIG. 5A.
  • the control group determines that the BS51, the BS52, and the BS53 form a cooperation set to provide data transmission for the UE5 according to the composition method of the cooperation set.
  • This embodiment provides a data transmission method, as shown in FIG. 5B. as follows:
  • the controller determines a collaboration set.
  • the Controller 5 determines that the cooperative set 51 is composed of the BS 51, the BS 52, and the BS 53, and performs data transmission for the UE 5.
  • BS51 also belongs to another collaboration set 52.
  • the controller determines, from the sparse code access codebook set, at least one codebook that can be used for base station cooperation to form a sparse code common codebook set.
  • the controller sends the sparse code common codebook set to each base station in the cooperation set.
  • the base station receives and saves the sparse code common codebook set sent by the controller.
  • the base station sends a codebook request to the controller.
  • BS51, BS52, and BS53 determine information on the minimum number of codebooks required, respectively.
  • BS51 and BS53 determine that the minimum number of codebooks required is 1 and BS52 determines the minimum number of codebooks required to be 2.
  • BS51, BS52, and BS53 respectively send codebook requests Q51, Q52, and Q53 to Controlle, as shown in Fig. 5C, where Q51, Q52, and Q53 carry information of the minimum number of codebooks required by BS51, BS52, and BS53, respectively.
  • the controller receives a codebook request sent by each base station in the cooperation set, and determines, according to the minimum code quantity information, a proportion of the minimum codebook number of the base stations in the cooperation set.
  • Controller 5 is based on Q51, Q52, and Q53 sent by BS51, BS52, and BS53.
  • the minimum number of codebooks required for BS51, BS52, and BS53 can be 1, 2, and 1, respectively, and the data is transmitted to BS51, BS52, and BS53 according to the ratio of the minimum number of codebooks required by BS51, BS52, and BS53.
  • the number of codebooks in the sparse code common codebook set S5, ⁇ C52, C53, ⁇ ., C56 ⁇ that can be used is allocated.
  • the controller 5 transmits the codebook instructions 151, 152, and 153 to the BS 51, BS 52, and BS 53 in the cooperation set 51, respectively.
  • the 151, 152, and 153 respectively carry the non-sparse code common codebook set determined by the controller.
  • Controlle also needs to specify 151 as the codebook instruction used by BS51 for data transmission in the cooperative set 51 through the cooperation set information.
  • the base station determines the collaboration codebook from the codebook specified by the codebook instruction.
  • the BS 52 determines, according to the CQI information fed back by the UE 5, C54 that can maximize the channel gain of the UE5 as the cooperation code. this.
  • the base station sends the sparse code common codebook set to the terminal.
  • each base station in the cooperative set 51 that is, BS51, BS52 and BS53, has no information interaction, and the data transmission process is independent of each other, BS51, BS52 and BS53 can independently transmit the sparse code common codebook set S5 to the UE5, respectively.
  • the base station sends a codebook notification to the terminal.
  • the BS 51, the BS 52, and the BS 53 respectively transmit the transmission codebook notifications N51, N52, and N53 to the UE 5, as shown in FIG. 5E, and inform the UE 5 that the C52 codebook needs to be used to access the BS 51, the C54 is used to access the BS 52, and the C55 is used to access the BS 53.
  • the terminal receives the codebook notification sent by the base station in the collaboration set.
  • the UE5 After receiving the codebook notifications N51, N52 and N53 sent by the respective BSs 51, BS52 and BS53, the UE5 can determine the codebook that can be used in the process of data transmission, that is, the UE5 is used in data transmission with the BS51.
  • C52, C54 is used for data transmission with BS52, and C55 is used for data transmission with BS53.
  • 512 The base station and the terminal use the cooperative codebook to perform data transmission.
  • the BS 51 transmits the data stream D51 to the UE 5, and performs a mapping of the data to the D51 using C52
  • the BS 52 transmits the data stream D52 to the UE 5, and performs codebook mapping on the D52 using C54
  • the BS 53 transmits the data stream D53 to the UE 5, and performs the D53 on the C53 using the C55.
  • the codebook mapping the data stream actually sent by BS51 is D51*C52
  • the data stream actually transmitted by BS52 is D52*C54
  • the data stream actually transmitted by BS53 is D53*C55
  • the operation symbol * is a custom operator
  • Embodiment 6 This embodiment provides a base station 60.
  • the base station 60 may be a base station of various forms in a communication system such as a macro base station, a home base station, or a small base station. As shown in FIG. 6, the method includes the following:
  • 601 a receiver, configured to receive a codebook command sent by a controller, where the codebook command is used to specify a codebook that the base station can use in transmitting data with the terminal, the codebook belongs to a sparse code common codebook set, and the sparse code common codebook A set of sparse codebooks that can be used for data transmission by each base station in the cooperative set, the cooperative set is a set of base stations that provide data transmission to the same terminal, and a code that can be used by the base station in the cooperative set in the data transmission with the terminal This is different from each other; 602: The transmitter is configured to send a codebook notification to the terminal, where the codebook notification is used to notify the terminal to the collaboration codebook, where the collaboration codebook is a codebook used for data transmission between the base station and the terminal in the collaboration set, and the collaboration codebook belongs to The codebook specified by the codebook instruction received by the base station in the cooperation set;
  • the processor is configured to use the collaboration codebook to perform data transmission with the terminal.
  • the receiver and the transmitter may exist separately in an independent manner, or may be integrated in one transceiver to simultaneously assume the functions of the receiver and the transmitter. This is not limited.
  • the 601 receiver may be further configured to: receive a sparse code common codebook set sent by the controller. As a specific description of the base station 60 shown in FIG.
  • the 602 transmitter may be further configured to: send a codebook request to the controller, where the codebook request carries the minimum number of codebooks required by the base station, so that the controller can The minimum number of codebooks is assigned to the codebooks that the base station can use in data transmission.
  • the codebook instruction is further used to specify a codebook that is not less than the minimum number of codebooks that the base station can use in performing data transmission.
  • the 602 transmitter may be further configured to: send a sparse code common codebook set to the terminal, so that the terminal receives and saves the sparse code common codebook set, and facilitates the terminal according to the code.
  • the 603 processor may be further configured to: determine the minimum number of codebooks required according to the number of data streams in the data transmission, where the minimum number of codebooks is not less than the number of data streams.
  • the 603 processor may be further configured to: determine, according to the codebook instruction, a codebook that can be used by the base station in data transmission in the sparse code common codebook set.
  • the 603 processor may be further configured to: determine, according to the cooperation set information, a cooperation set to which the codebook instruction applies.
  • the present embodiment provides a controller 70.
  • the controller 70 may be in an independent form or integrated in other control nodes in the communication system, as shown in FIG. 7A, and specifically includes the following:
  • a processor configured to determine a collaboration set, where the cooperation set is a set of base stations that provide data transmission to the same terminal;
  • the transmitter is configured to send a codebook command to each base station in the collaboration set, where the codebook command is used to specify a codebook that can be used by each base station in the cooperation set in the data transmission with the terminal, and each base station is in data transmission.
  • the codebooks that can be used belong to the sparse code common codebook set and are different from each other.
  • the sparse code common codebook set is a set of sparse codebooks that can be used for data transmission by each base station in the cooperative set.
  • an optional scheme of the controller 70 is as shown in FIG. 7B, and may further include:
  • the receiver is configured to receive a codebook request sent by each base station in the cooperation set, where the codebook request carries information about a minimum number of codebooks required by the base station.
  • the receiver and the transmitter may exist separately in separate forms, or may be integrated in one transceiver to simultaneously assume the functions of the receiver and the transmitter, and the embodiment of the present invention This is not limited.
  • the 703 receiver can be further used for:
  • the codebook request carries information of the minimum number of codebooks required by the base station.
  • the codebook instructions are further used to specify a codebook of not less than the minimum number of codebooks that can be used by each base station in the cooperation set in data transmission.
  • the 701 processor can be further used for:
  • the codebook command sent by each base station in the set further includes cooperation set information, and the cooperation set information is used by the base station that receives the codebook command to determine a cooperation set to which the codebook instruction applies according to the cooperation set information.
  • the controller 70 shown in FIG. 7A or FIG. 7B wherein the 702 transmitter is to the association
  • the codebook command sent by each base station in the set further includes cooperation set information, and the cooperation set information is used by the base station that receives the codebook command to determine a cooperation set to which the codebook instruction applies according to the cooperation set information.
  • the 702 transmitter may be further configured to: send a sparse code common codebook set to each base station in the cooperation set, so that each base station in the cooperation set receives and Preserving the sparse code common codebook set, and so that each base station in the cooperation set determines a cooperative codebook for data transmission from the sparse code common codebook set according to the codebook command, and the cooperation codebook is performed by the base station and the terminal in the cooperative set.
  • Embodiment 8 This embodiment provides a terminal 80, as shown in FIG. 8A, specifically including the following:
  • the receiver is configured to receive a codebook notification sent by at least one base station in the cooperation set, where the codebook notification is used by at least one base station to notify the terminal of the cooperation codebook, where the cooperation codebook is used for data transmission by at least one base station and the terminal.
  • a sparse code codebook where the cooperation set is a set of base stations that provide data transmission to the same terminal, and the base stations in the cooperative set are different from each other in a sparse code codebook that can be used in terminal data transmission;
  • a processor configured to perform data transmission with at least one base station by using a cooperative codebook.
  • the 801 receiver may be further configured to: receive and save the sparse code common codebook set sent by the base station in the cooperation set.
  • the 802 processor may be further configured to: determine the cooperative codebook in the sparse code common codebook set according to the codebook notification.
  • the 802 processor may be further configured to: obtain a cooperative codebook from the codebook notification, and use the cooperative codebook to decode the at least one data stream sent by the received at least one base station.
  • an alternative of the terminal 80 may further include:
  • the transmitter is configured to send a retransmission request to the base station that sends the data stream that fails to decode, and the retransmission request is used to request the base station that sends the data stream that fails to decode to resend the data stream that fails to be decoded.
  • the receiver and the transmitter may exist separately in separate forms, or may be integrated in one transceiver to simultaneously assume the functions of the receiver and the transmitter, and the embodiment of the present invention This is not limited.
  • Embodiment 9 provides a base station 90.
  • the base station 90 may be a base station of various forms in a communication system such as a macro base station, a home base station, or a small base station. As shown in FIG. 9, the method includes the following:
  • the receiving unit is configured to receive a codebook command sent by the controller, where the codebook command is used to specify a codebook that the base station can use in the data transmission with the terminal, the codebook belongs to the sparse code common codebook set, and the sparse code common codebook.
  • a set of sparse codebooks that can be used for data transmission by each base station in the cooperative set, the cooperative set is a set of base stations that provide data transmission to the same terminal, and a code that can be used by the base station in the cooperative set in the data transmission with the terminal This is different from each other;
  • a transmitting unit configured to send a codebook notification to the terminal, where the codebook notification is used to notify the terminal to the collaboration codebook, where the collaboration codebook is a codebook used for data transmission between the base station and the terminal in the collaboration set, and the collaboration codebook belongs to The codebook specified by the codebook instruction received by the base station in the cooperation set;
  • the processing unit is configured to use the collaboration codebook to perform data transmission with the terminal.
  • the receiving unit and the transmitting unit may exist separately in an independent manner, or may be integrated in one transceiver unit to simultaneously perform the functions of the receiving unit and the transmitting unit. This is not limited.
  • the 901 receiving unit may be further configured to: receive a sparse code common codebook set sent by the controller.
  • the 902 transmitting unit can be further used for:
  • a codebook request is sent to the controller, and the codebook request carries the minimum number of codebooks required by the base station, so that the controller allocates the codebooks that the base station can use in the data transmission according to the minimum number of codebooks.
  • the codebook instruction is further used to specify a codebook that the base station can use in performing data transmission not less than the minimum number of codebooks.
  • the sparse code common codebook set is sent to the terminal, so that the terminal receives and saves the sparse code common codebook set, and the terminal is configured to determine, according to the codebook notification, the cooperative codebook for data transmission from the base station from the sparse code common codebook set.
  • the 903 processing unit can be further used for:
  • the minimum number of codebooks required is determined according to the number of data streams in the data transmission, wherein the minimum number of codebooks is not less than the number of data streams.
  • the 903 processing unit can be further used for:
  • the codebook that the base station can use in the data transmission is determined in the sparse code common codebook set according to the codebook instruction.
  • the processing unit 903 may be further configured to: determine, according to the cooperation set information, a cooperation set to which the codebook instruction applies.
  • the present embodiment provides a controller 100.
  • the controller 100 may be in an independent form or integrated in other control nodes in the communication system, as shown in FIG. 10A, and specifically includes the following:
  • a processing unit configured to determine a collaboration set, where the cooperation set is a set of base stations that provide data transmission to the same terminal;
  • a transmitting unit configured to send a codebook command to each base station in the collaboration set, where the codebook command is used to specify a codebook that can be used by each base station in the cooperation set in the data transmission with the terminal, and each base station is in data transmission.
  • the codebooks that can be used belong to the sparse code common codebook set and are different from each other.
  • the sparse code common codebook set is a set of sparse codebooks that can be used for data transmission by each base station in the cooperative set.
  • an alternative of the controller 100 may further include: 1003:
  • the receiving unit is configured to receive a codebook request sent by each base station in the cooperation set, where the codebook request carries information about a minimum number of codebooks required by the base station.
  • the receiving unit and the transmitting unit may exist separately in an independent manner, or may be integrated in one transceiver unit to simultaneously perform the functions of the receiving unit and the transmitting unit, and the embodiment of the present invention This is not limited.
  • the 1003 receiving unit may be further configured to: receive a codebook request sent by each base station in the cooperation set, where the codebook request carries information about a minimum number of codebooks required by the base station. .
  • the codebook instruction is further used to specify a codebook of not less than the minimum number of codebooks that can be used by each base station in the cooperation set in data transmission.
  • the 1001 processing unit may be further configured to: determine, according to the minimum codebook quantity information, a proportion of the minimum codebook number of each base station in the cooperation set, according to the minimum codebook quantity The ratio determines the ratio of each base station in the collaboration set to the number of codebooks that can be used in the terminal data transmission.
  • the codebook instruction sent by the 1002 transmitting unit to each base station in the cooperation set further includes cooperation set information, and the cooperation set information is used for the base station that receives the codebook instruction.
  • the collaboration set to which the codebook instruction applies is determined based on the collaboration set information.
  • the 1002 transmitting unit may be further configured to: send a sparse code common codebook set to each base station in the cooperation set, so that each base station in the cooperation set receives and Preserving the sparse code common codebook set, and so that each base station in the cooperation set determines a cooperative codebook for data transmission from the sparse code common codebook set according to the codebook command, and the cooperation codebook is performed by the base station and the terminal in the cooperative set.
  • Embodiment 11 This embodiment provides a terminal 110, as shown in FIG. 11A, specifically including the following:
  • a receiving unit configured to receive a codebook notification sent by at least one base station in the collaboration set,
  • the codebook notification is used by at least one base station to inform the terminal of the cooperative codebook
  • the cooperative codebook is a sparse code codebook used for data transmission by at least one base station and the terminal
  • the cooperation set is a set and cooperation of base stations that provide data transmission to the same terminal.
  • the centralized base station is different from the sparse code codebook that can be used in the terminal data transmission;
  • the processing unit is configured to perform data transmission with the at least one base station by using the cooperative codebook.
  • the 1101 receiving unit may be further configured to: receive and save a sparse code common codebook set sent by the base station in the cooperation set.
  • the 1102 processing unit can be further used for:
  • the collaborative codebook is determined in the sparse code common codebook set according to the codebook notification.
  • the 1102 processing unit can be further used for:
  • the cooperative codebook is obtained from the codebook notification, and the at least one data stream transmitted by the received at least one base station is decoded using the cooperative codebook.
  • an alternative of the terminal 110 as shown in FIG. 11B, may further include:
  • a transmitting unit configured to send a retransmission request to a base station that sends a data stream that fails to be decoded, where the retransmission request is used to resend a data stream that fails to decode.
  • the receiving unit and the transmitting unit may exist separately in an independent manner, or may be integrated in one transceiver unit to simultaneously perform the functions of the receiving unit and the transmitting unit, and the embodiment of the present invention This is not limited.
  • the present invention provides a data transmission method and apparatus, which utilizes a sparse code codebook that can be used in connection with a terminal data transmission by a base station in a cooperative set to realize independent data transmission between a base station and a terminal, and does not require a base station. Data interaction and channel information interaction, reducing the system The overhead increases the efficiency of network transmission.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供了一种数据传输方法和装置,利用协作集中的基站在与终端数据传输中能够使用的稀疏码码本互不相同,实现基站之间独立的与终端进行数据传输,不需要基站之间进行数据交互和信道信息的交互,减小了系统的开销,提高了网络传输的效率。

Description

一种数据传输方法和装置
技术领域
本发明涉及通信技术领域, 尤其涉及一种数据传输方法和装置。
背景技术
基站协作传输是指地理位置上分离的多个基站,协同参与为一个终端进 行数据传输或者联合接收一个终端发送的数据, 参与协作的多个基站通常指 不同小区的基站。 基站协作技术将边缘用户置于几个基站的同频率上, 几个 基站同时为该用户服务, 以提高边缘用户的覆盖性能。 采用基站协同能够降 低小区间干扰, 主要是能够提升小区边缘用户的频谱效率。 现有技术在实现基站协作的方案中, 网络节点间交互的信息量较大, 致 使协作过程中数据传输较为复杂, 对网络的回传系统影响较大, 网络传输效 率较低。
发明内容
本发明提供了一种数据传输方法和装置, 能够解决基站协作通信系统中 网络交互信息开销较大的问题。 为了达到上述目的, 本发明的实施例采用如下技术方案:
一方面, 本发明实施例提供了一种基站, 包括: 接收机, 用于接收控制器发送的码本指令, 码本指令用于指定基站在与 终端数据传输中能够使用的码本, 码本属于稀疏码公共码本集, 稀疏码公共 码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏码码本的 集合,协作集为向同一终端提供数据传输的基站的集合且协作集中的基站在 与终端数据传输中能够使用的码本互不相同; 发射机,用于向终端发送码本通知,码本通知用于将协作码本告知终端, 协作码本为协作集中的基站与终端进行数据传输所采用的码本, 并且协作码 本属于协作集中的基站收到的码本指令所指定的码本; 处理器, 用于使用协作码本, 与终端进行数据传输。 在所述第一方面的第一种可能的实现方式中, 发射机进一步用于: 向控制器发送码本请求,码本请求携带有基站所需的最小码本数量的信 息, 以便于控制器根据最小码本数量对基站在数据传输中能够使用的码本进 行分配;
其中码本指令进一步用于指定基站在进行数据传输中能够使用的不少 于最小码本数量的的码本。 在所述第一方面或所述第一方面的第一种可能的实现方式中,还提供了 所述第一方面的第二种可能的实现方式, 处理器进一步用于: 根据数据传输中的数据流数量确定所需的最小码本数量, 其中最小码本 数量不少于数据流数量。 在所述第一方面或所述第一方面的第一种或第二种可能的实现方式中, 还提供了所述第一方面的第三种可能的实现方式: 接收机进一步用于接收控制器发送的稀疏码公共码本集; 处理器进一步用于根据码本指令在稀疏码公共码本集中确定基站在数 据传输中能够使用的码本。 在所述第一方面或所述第一方面的第一种至第三种任一可能的实现方 式中, 还提供了所述第一方面的第四种可能的实现方式, 码本指令进一步包 含协作集信息,处理器进一步用于根据协作集信息确定码本指令适用的协作 集。 在所述第一方面或所述第一方面的第一种至第四种任一可能的实现方 式中,还提供了所述第一方面的第五种可能的实现方式,发射机进一步用于: 向终端发送稀疏码公共码本集, 以便于终端接收并保存稀疏码公共码本 集, 并以便于终端根据码本通知从稀疏码公共码本集中确定与基站进行数据 传输的协作码本。 另一方面, 本发明实施例提供了一种控制器, 包括: 处理器, 用于确定协作集, 协作集为向同一终端提供数据传输的基站的 集合; 发射机, 用于向协作集中的每一个基站发送码本指令, 码本指令用于指 定协作集中的每一个基站在与终端数据传输中能够使用的码本,每一个基站 在数据传输中能够使用的码本属于稀疏码公共码本集且互不相同,稀疏码公 共码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏码码本 的集合。 在所述第二方面的第一种可能的实现方式中, 控制器还包括接收机, 用 于接收协作集中的每一个基站发送的码本请求,码本请求携带有基站所需的 最小码本数量的信息; 处理器进一步用于根据最小码本数量的信息,确定协作集中的每一个基 站的最小码本数量的比例, 根据最小码本数量的比例, 确定协作集中的每一 个基站在与终端数据传输中能够使用的码本数量的比例。 在所述第二方面或所述第二方面的第一种可能的实现方式中,还提供了 所述第二方面的第二种可能的实现方式,码本指令进一步用于指定协作集中 的每一个基站在数据传输中能够使用的不少于最小码本数量的的码本。 在所述第二方面或所述第二方面的第一种或第二种可能的实现方式中, 还提供了所述第二方面的第三种可能的实现方式,码本指令进一步包含协作 集信息,协作集信息用于接收到码本指令的基站根据协作集信息确定码本指 令适用的协作集。 在所述第二方面或所述第二方面的第一种至第三种任一可能的实现方 式中,还提供了所述第二方面的第四种可能的实现方式,发射机进一步用于: 向协作集中的每一个基站发送稀疏码公共码本集, 以便于协作集中的每 一个基站接收并保存稀疏码公共码本集, 并以便于协作集中的每一个基站根 据码本指令从稀疏码公共码本集中确定与终端进行数据传输的协作码本,协 作码本为协作集中的基站与终端进行数据传输所采用的码本。 另一方面, 本发明实施例提供了一种终端, 包括: 接收机, 用于接收协作集中的至少一个基站发送的码本通知, 码本通知 用于至少一个基站将协作码本告知终端,协作码本为至少一个基站与终端进 行数据传输所采用的稀疏码码本,协作集为向同一终端提供数据传输的基站 的集合且协作集中的基站在与终端数据传输中能够使用的稀疏码码本互不 相同;
处理器, 用于使用协作码本与至少一个基站进行数据传输。
在所述第三方面的第一种可能的实现方式中: 接收机进一步用于接收并保存协作集中的基站发送的稀疏码公共码本 集;
处理器进一步用于根据码本通知在稀疏码公共码本集中确定协作码本。 在所述第三方面或所述第三方面的第一种可能的实现方式中,还提供了 所述第三方面的第二种可能的实现方式, 处理器进一步用于: 使用协作码本对接收的至少一个基站发送的至少一个数据流进行译码。 在所述第三方面或所述第三方面的第一种或第二种可能的实现方式中, 还提供了所述第三方面的第三种可能的实现方式, 若处理器对至少一个数据 流进行译码失败, 则终端还包括: 发射机, 用于向发送译码失败的数据流的基站发送重传请求, 重传请求 用于要求发送译码失败的数据流的基站重新发送译码失败的数据流。
另一方面, 本发明实施例提供了一种数据传输方法, 包括: 基站接收控制器发送的码本指令,码本指令用于指定基站在与终端数据 传输中能够使用的码本, 码本属于稀疏码公共码本集, 稀疏码公共码本集为 能够供协作集中的每一个基站进行数据传输使用的稀疏码码本的集合,协作 集为向同一终端提供数据传输的基站的集合且协作集中的基站在与终端数 据传输中能够使用的码本互不相同;
基站向终端发送码本通知, 码本通知用于将协作码本告知终端, 协作码 本为协作集中的基站与终端进行数据传输所采用的码本, 并且协作码本属于 协作集中的基站收到的码本指令所指定的码本;
基站使用协作码本, 与终端进行数据传输。 在所述第四方面的第一种可能的实现方式中,基站接收控制器发送的码 本指令之前, 还包括: 向控制器发送码本请求,码本请求携带有基站所需的最小码本数量的信 息, 以便于控制器根据最小码本数量对基站在数据传输中能够使用的码本进 行分配;
其中码本指令进一步用于指定基站在进行数据传输中能够使用的不少 于最小码本数量的的码本。 在所述第四方面或所述第四方面的第一种可能的实现方式中,还提供了 所述第四方面的第二种可能的实现方式,基站根据数据传输中的数据流数量 确定所需的最小码本数量, 其中最小码本数量不少于数据流数量。 在所述第四方面或所述第四方面的第一种或第二种可能的实现方式中, 还提供了所述第四方面的第三种可能的实现方式,基站向终端发送码本通知 之前, 还包括: 基站接收控制器发送的稀疏码公共码本集; 基站根据码本指令在稀疏码公共码本集中确定基站在数据传输中能够 使用的码本。 在所述第四方面或所述第四方面的第一种至第三种任一可能的实现方 式中, 还提供了所述第四方面的第四种可能的实现方式, 码本指令进一步包 含协作集信息, 基站根据协作集信息确定码本指令适用的协作集。 在所述第四方面或所述第四方面的第一种至第四种任一可能的实现方 式中, 还提供了所述第四方面的第五种可能的实现方式, 基站向终端发送码 本通知之前, 还包括: 基站向终端发送稀疏码公共码本集, 以便于终端接收并保存稀疏码公共 码本集, 并以便于终端根据码本通知从稀疏码公共码本集中确定与基站进行 数据传输的协作码本。 另一方面, 本发明实施例提供了一种数据传输方法, 其特征在于: 控制器确定协作集, 协作集为向同一终端提供数据传输的基站的集合; 控制器向协作集中的每一个基站发送码本指令,码本指令用于指定协作 集中的每一个基站在与终端数据传输中能够使用的码本,每一个基站在数据 传输中能够使用的码本属于稀疏码公共码本集且互不相同,稀疏码公共码本 集为能够供协作集中的每一个基站进行数据传输使用的稀疏码码本的集合。 在所述第五方面的第一种可能的实现方式中,控制器向协作集中的每一 个基站发送码本指令之前, 还包括: 控制器接收协作集中的每一个基站发送的码本请求,码本请求携带有基 站所需的最小码本数量的信息; 控制器根据最小码本数量的信息,确定协作集中的每一个基站的最小码 本数量的比例; 控制器根据最小码本数量的比例,确定协作集中的每一个基站在与终端 数据传输中能够使用的码本数量的比例。 在所述第五方面或所述第五方面的第一种可能的实现方式中,还提供了 所述第五方面的第二种可能的实现方式,码本指令进一步用于指定协作集中 的每一个基站在数据传输中能够使用的不少于最小码本数量的的码本。 在所述第五方面或所述第五方面的第一种或第二种可能的实现方式中, 还提供了所述第五方面的第三种可能的实现方式,码本指令进一步包含协作 集信息,协作集信息用于接收到码本指令的基站根据协作集信息确定码本指 令适用的协作集。 在所述第五方面或所述第五方面的第一种至第三种任一可能的实现方 式中, 还提供了所述第五方面的第四种可能的实现方式, 控制器向协作集中 的每一个基站发送码本指令之前, 还包括: 控制器向协作集中的每一个基站发送稀疏码公共码本集, 以便于协作集 中的每一个基站接收并保存稀疏码公共码本集, 并以便于协作集中的每一个 基站根据码本指令从稀疏码公共码本集中确定与终端进行数据传输的协作 码本, 协作码本为协作集中的基站与终端进行数据传输所采用的码本。 另一方面, 本发明实施例提供了一种数据传输方法, 其特征在于: 终端接收协作集中的至少一个基站发送的码本通知,码本通知用于至少 一个基站将协作码本告知终端,协作码本为至少一个基站与终端进行数据传 输所采用的稀疏码码本,协作集为向同一终端提供数据传输的基站的集合且 协作集中的基站在与终端数据传输中能够使用的稀疏码码本互不相同; 终端使用协作码本与至少一个基站进行数据传输。 在所述第六方面的第一种可能的实现方式中,终端接收协作集中的至少 一个基站发送的码本通知之前, 还包括:
终端接收并保存协作集中的基站发送的稀疏码公共码本集; 终端根据码本通知在稀疏码公共码本集中确定协作码本。 在所述第六方面或所述第六方面的第一种可能的实现方式中,还提供了 所述第六方面的第二种可能的实现方式, 终端使用码本通知告知的协作码 本, 与至少一个基站进行数据传输具体为: 终端使用协作码本对接收的至少一个基站发送的至少一个数据流进行 译码。 在所述第六方面或所述第六方面的第一种或第二种可能的实现方式中, 还提供了所述第六方面的第三种可能的实现方式, 若终端对至少一个数据流 进行译码失败, 则方法还包括: 终端发送译码失败的数据流的基站发送重传请求, 重传请求用于要求发 送译码失败的数据流的基站重新发送译码失败的数据流。
本发明利用协作集中的基站在与终端数据传输中能够使用的稀疏码码 本互不相同, 实现基站之间独立的与终端进行数据传输, 不需要基站之间进 行数据交互和信道信息的交互,减小了系统的开销,提高了网络传输的效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作一筒单地介绍, 显而易见地, 下 面描述中的附图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, 还能够根据这些附图获得其他的附图。 图 1为本发明实施例提供的一种数据传输方法的流程图;
图 2为本发明实施例提供的另一种数据传输方法的流程图;
图 3为本发明实施例提供的另一种数据传输方法的流程图; 图 4A为本发明实施例提供的一种数据传输场景的示意图; 图 4B为本发明实施例提供的另一种数据传输方法的流程图;
图 4C为本发明实施例提供的一种控制器与基站交互信息的方法的示意 图;
图 4D 为本发明实施例提供的一种基站与终端交互信息的方法的示意 图;
图 5A为本发明实施例提供的另一种数据传输场景的示意图;
图 5B为本发明实施例提供的另一种数据传输方法的流程图;
图 5C为本发明实施例提供的另一种控制器与基站交互信息的方法的示 意图;
图 5D为本发明实施例提供的另一种控制器与基站交互信息的方法的示 意图;
图 5E为本发明实施例提供的另一种基站与终端交互信息的方法的示意 图;
图 6为本发明实施例提供的一种基站的示意图;
图 7A为本发明实施例提供的一种控制器的示意图;
图 7B为本发明实施例提供的另一种控制器的示意图;
图 8A为本发明实施例提供的一种终端的示意图;
图 8B为本发明实施例提供的另一种终端的示意图;
图 9为本发明实施例提供的另一种基站的示意图;
图 10A为本发明实施例提供的另一种控制器的示意图;
图 10B为本发明实施例提供的另一种控制器的示意图;
图 11A为本发明实施例提供的另一种终端的示意图;
图 11B为本发明实施例提供的另一种终端的示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。 实施例 1 多址接入是指在指定无线资源内, 实现多个用户同时接入的方式。 常见 的多址接入方式包括时分多址接入 ( Time Division Multiple Access , TDMA )、 频分多址接入 ( Frequency Division Multiple Access, FDMA )、 码分多址接入 ( Code Division Multiple Access , CDMA ) 和正交频分多址 ( Orthogonal Frequency Division Multiple Access , OFDMA )等方式。 稀疏码多址接入 ( Sparse Code Multiple Access, SCMA )是利用低密度 的稀疏码在特定的时频域进行扩展,通过非正交的方式实现大量用户同时接 入的方式, 能够使接入用户的数量大于正交资源块的数量, 从而提高了资源 块的利用率。 基站协作传输是指地理位置上分离的多个基站,协同参与为一个终端进 行数据传输或者联合接收一个终端发送的数据。 在 SCMA 系统的数据传输 方法中, 稀疏码公共码本集中的稀疏码码本, 用于终端接入协作集中的基站 使用。 在基于 SCMA 的通信系统中, 本实施例提供了一种数据传输方法, 如 图 1所示, 具体流程如下:
101 : 基站接收控制器发送的码本指令。 本实施例提供的基站, 包括多种包含功率放大器(Power Amplifier, PA ) 的设备,如通信系统中各种形态的基站或中继( Relay ),无线接入点( Access Point, AP )等。 可选的, 当一个基站同时属于多个协作集时, 基站接收控制器发送的码 本指令, 其中码本指令包含协作集信息, 基站根据协作集信息确定码本指令 适用的协作集。 例如, 基站 0同时属于协作集 0和协作集 1 , 控制器向基站 发送码本指令 0时, 还指定码本指令 0适用于协作集 0, 或控制器向基站发 送码本指令 1时, 还指定码本指令 1适用于协作集 1。 基站接收控制器发送的码本指令后, 即可确定在进行数据传输中能够使 用的至少一个位于协作集的稀疏码公共码本集中的码本。码本指令可以但不 限定为通过多种形式携带码本的信息, 例如直接携带码本本身, 或携带码本 索引号、 码本序号等。 其中, 稀疏码公共码本集为能够供协作集中的每一个 基站进行数据传输使用的稀疏码码本的集合。 需要特别注意的是, 控制器向 每一个基站指定的码本互不相同。 在 SCMA系统的数据传输方法中, 稀疏码公共码本集中的稀疏码码本, 用于终端接入协作集中的基站使用。 基站在进行数据传输时, 需要使用稀疏 码公共码本集中的码本完成终端的接入与数据传输。
SCMA能够实现接入用户的数量大于正交资源块的数量, 例如, 正交资 源块数量为 20, 但实际能够接入的用户数为 30等。 非正交的多用户接入方 式, 能够大大提高有限的无线资源上的用户接入数量, 从而提高资源块的利 用率。
可选的, 稀疏码公共码本集可以具体为: 在 SCMA 系统中, 稀疏码接入码本集为全部或部分能够供基站接入使 用的稀疏码码本的集合。 其中, 稀疏码码本可以但不限定为通过计算机进行 计算或搜索得到, 稀疏码码本的计算或搜索方法能够使用公知技术手段, 此 处不再赘述。 稀疏码公共码本集可以由稀疏码接入码本集中的至少一个可用于基站 协作的码本组成, 即稀疏码公共码本集为稀疏码接入码本集的非空子集。 进一步可选的, 在 SCMA 系统中, 每个基站的技术规格可以不相同, 也就是说, 每个基站支持的稀疏码码本可以不相同。 当向同一终端提供数据传输的协作集中的各个基站所支持的稀疏码接 入码本集不相同的时候,稀疏码公共码本集可以由稀疏码接入码本集中的协 作集中的每一个基站均支持的码本组成。 可选的, 基站获取稀疏码公共码本集的方法可以具体为: 基站在接收控制器发送的码本指令之前, 能够接收并保存控制器发送的 稀疏码公共码本集。 可选的, 基站获取稀疏码公共码本集的方法还可以具体为: 由运营商在网络规划或网络优化的过程中, 直接将可用的稀疏码公共码 本集进行设置并保存, 以便基站直接使用; 或在网络的运行过程中, 由相关 的网络控制节点,如移动管理实体( Mobility Management Entity , ΜΜΕ )等, 对稀疏码公共码本集进行设置或更新, 并保存以便基站直接使用。 特别的, 当基站获取稀疏码公共码本集后, 若控制器发送码本指令时只 发送码本的编号,基站即可根据获取的稀疏码公共码本集和码本指令携带的 码本编号, 确定在进行数据传输中可以使用的码本。 例如, 基站获取的稀疏 码公共码本集为 S1 = {C11 , C12, ..· , C16} , 且码本指令可以不携带码本本 身, 而仅携带码本编号为 4和 5 , 则基站可以确定 S1中的 C14和 C15为在 进行数据传输中可以使用的码本。 可选的, 基站接收控制器发送的码本指令之前, 可以向控制器发送码本 请求, 其中码本请求携带有基站所需的最小码本数量的信息, 以便于所述控 制器根据最小码本数量对基站在进行数据传输中可以使用的码本进行分配。 每个基站实际需要使用的数据流的数量不相同, 负担的业务量不相同, 因而在数据传输的过程中, 所需要的最小码本数量也不相同。 基站可以根据 自身运行的实际需要, 向控制器发送携带有基站所需的最小码本数量信息的 码本请求。 进一步可选的, 基站确定所需的最小码本数量的方法可以具体为: 基站根据数据传输中的数据流数量,确定最小码本数量不少于数据流数 量。 例如, 基站 5为终端进行服务时, 需要 2条数据流以达到终端的数据传 输需求, 则基站 5上报的最小码本数量为 2。 需要注意的是, 基站还可以根 据实际需求上报大于数据流数量的最小码本数量, 例如, 基于业务量模型等 方法可以预测即将开始进行的数据传输需要额外的数据流来进行承载等。 控制器根据获取的协作集中的每一个基站发送的码本请求,可以得到每 一个基站所需要的最小码本数量的信息, 并对协作集中的每一个基站在进行 数据传输中可以使用的位于稀疏码公共码本集中的码本的数量进行分配,进 而向基站发送码本指令。 其中, 码本指令进一步用于指定基站在进行数据传 输中可以使用的不少于最小码本数量的码本。 基站接收控制器发送的码本指令, 即可确定可以用于在进行数据传输中 可以使用的码本。
102: 基站向终端发送码本通知。 基站向终端发送码本通知,告知终端在进行数据传输时所使用的协作码 本。 码本通知可以但不限定为通过多种形式携带码本的信息, 例如直接携带 码本本身, 或携带码本索引号、 码本序号等。 可选的,基站可以在保存的稀疏码公共码本集所包含的码本指令所指定 的码本中确定协作码本。基站确定协作码本的方法,可以为随机选择的方法, 也可以为由基站或终端根据某一规则进行终端与码本之间的匹配, 其中的规 则可以但不限定为信道质量指示(Channel Quality Indicator, CQI )等, 匹配 的方法可以采用任一种公知技术手段, 此处不再赘述。 进一步可选的, 基站可以根据数据传输中的数据流数量, 从码本指令中 指定的码本中确定与数据流数量相同数量的码本作为协作码本。 其中, 协作 码本为基站与终端进行数据传输所采用的码本。 可选的, 基站向终端发送码本通知之前, 可以向终端发送获取的稀疏码 公共码本集, 以便于终端接收并保存稀疏码公共码本集, 并以便于终端根据 码本通知在保存的稀疏码公共码本集中确定码本通知指定的协作码本用于 数据传输。 特别的, 当终端获取稀疏码公共码本集后, 若基站发送码本通知 时只发送码本的编号, 终端即可根据获取的稀疏码公共码本集和码本通知携 带的码本编号, 确定在进行数据传输中使用的码本。
103: 基站使用协作码本, 与终端进行数据传输。 基站使用协作码本对所需进行传输的数据流进行码本映射, 并向终端发 送经过码本映射后的数据流, 其中码本映射的方法可以使用公知技术手段, 此处不再赘述。 本实施例中, 通过采用 SCMA 的接入方式, 通过稀疏码实现非正交的 多用户接入, 大大提高了有限的无线资源上的用户接入数量, 基站可以独立 的对信息进行处理, 不需要基站之间进行数据交互和信道信息的交互, 减小 了系统的开销, 提高了网络传输的效率。 此外, 本实施例提供的方案, 只需 要基站与控制器之间进行信息交互, 不需要基站之间进行信息交互, 大大的 降低了数据传输的复杂度, 同时减小了系统的负荷。 实施例 2 在 SCMA 的通信系统中, 本实施例提供了一种数据传输方法, 如图 2 所示, 具体流程如下: 201: 控制器确定协作集。 协作集为向同一终端提供数据传输的基站的集合, 可以使用动态、 半动 态或静态等方法进行组合, 协作集的组合方法可以使用公知技术手段, 此处 不再赘述。 202: 控制器向协作集中的每一个基站发送码本指令。 控制器向协作集中的每一个基站发送码本指令,指定协作集中的每一个 基站在进行数据传输中可以使用的至少一个位于协作集的稀疏码公共码本 集中的码本。 码本指令可以但不限定为通过多种形式携带码本的信息, 例如 直接携带码本本身, 或携带码本索引号、 码本序号等。 其中, 稀疏码公共码 本集为可以供协作集中的每一个基站进行数据传输使用的稀疏码码本的集 合。 需要特别注意的是, 控制器向每一个基站指定的码本互不相同。
SCMA可以实现接入用户的数量大于正交资源块的数量,大大提高有限 的无线资源上的用户接入数量, 从而提高资源块的利用率。 可选的, 当一个基站同时属于多个协作集时, 基站接收控制器发送的码 本指令, 其中控制器还需要指定码本指令适用的协作集。 例如, 基站 0同时 属于协作集 0和协作集 1 , 控制器向基站发送码本指令 0时, 还需要指定码 本指令 0适用于协作集 0, 或控制器向基站发送码本指令 1时, 还需要指定 码本指令 1适用于协作集 1。 可选的, 控制器获取稀疏码公共码本集可以具体为: 在 SCMA 系统中, 稀疏码接入码本集为全部或部分可以供基站接入使 用的稀疏码码本的集合。 其中, 稀疏码码本可以但不限定为通过计算机进行 计算或搜索得到, 稀疏码码本的计算或搜索方法可以使用公知技术手段, 此 处不再赘述。 控制器从稀疏码接入码本集中确定至少一个可用于基站协作的码本组 成稀疏码公共码本集, 即稀疏码公共码本集为稀疏码接入码本集的非空子 集。 进一步可选的, 在 SCMA 系统中, 每个基站的技术规格可以不相同, 也就是说, 每个基站支持的稀疏码接入码本集可以不相同。 当向同一终端提供数据传输的协作集中的各个基站所支持的稀疏码接 入码本集不相同的时候,控制器从稀疏码接入码本集中确定至少一个协作集 中的每一个基站均支持的码本组成稀疏码公共码本集 可选的, 控制器获取稀疏码公共码本集还可以具体为: 由运营商在网络规划或网络优化的过程中, 直接将可用的稀疏码公共码 本集进行设置并保存, 以便控制器直接使用; 或在网络的运行过程中, 由相 关的网络控制节点, 如 MME等, 对稀疏码公共码本集进行设置或更新, 并 保存以便控制器直接使用。 控制器向协作集中的每一个基站发送码本指令,码本指令中携带有控制 器确定的稀疏码公共码本集的一个非空子集, 用于指定基站在进行数据传输 中可以使用的至少一个位于稀疏码公共码本集中的码本。 进一步可选的, 码 本指令指定基站在进行数据传输中可以使用的码本时, 可以使用码本的编号 对码本进行标识, 在发送码本指令时只发送码本的编号而非码本本身, 从而 可以进一步减小系统开销。 可选的, 控制器向协作集中的每一个基站发送码本指令之前, 可以向协 作集中的每一个基站发送稀疏码公共码本集, 以便于基站接收并保存稀疏码 公共码本集, 并以便于基站从保存的稀疏码公共码本集中确定码本指令指定 的码本用于数据传输。 特别的, 当基站获取稀疏码公共码本集后, 若控制器 发送码本指令时只发送码本的编号,基站即可根据获取的稀疏码公共码本集 和码本指令携带的码本编号, 确定在进行数据传输中可以使用的码本。 可选的, 控制器向协作集中的每一个基站发送所述码本指令之前, 控制 器可以接收协作集中的每一个基站发送的码本请求, 其中码本请求携带有基 站所需的最小码本数量的信息。 每个基站实际需要使用的数据流的数量不相同, 负担的业务量不相同, 因而在数据传输的过程中, 所需要的最小码本数量也不相同。 基站可以根据 自身运行的实际需要, 向控制器发送携带有基站所需的最小码本数量信息的 码本请求。 控制器接收到码本请求后, 即可获得协作集中每一个基站所需的 最小码本数量的信息。 进一步可选的, 控制器接收到码本请求后, 指定基站在进行数据传输中 可以使用的码本的方法可以具体为: 控制器根据接收的协作集中的每一个基站发送的码本请求, 可以获取每 一个基站所需要的最小码本数量的信息, 并依照每一个基站所需要的最小码 本数量的比例,对协作集中的每一个基站在进行数据传输中可以使用的位于 稀疏码公共码本集中的码本的数量进行分配。 例如, 稀疏码公共码本集中的 码本数量为 6, 协作集中有基站 1上报的最小码本数量为 2, 基站 2上报的 最小码本数量为 1 , 则控制器可以将 4个码本分配给基站 1 , 将 2个码本分 配给基站 2。 特别的, 控制器可以依照具体情况对码本分配方式适当调整, 如当稀疏 码公共码本集中的码本数量按比例分配非整数时, 可以但不限定为通过四舍 五入或向下取整等方法确定分配给协作集中每一个基站的码本数量, 例如, 稀疏码公共码本集中的码本数量为 8, 协作集中有基站 3上报的最小码本数 量为 2, 基站 4上报的最小码本数量为 1 , 依照比例, 基站 3与基站 4被分 配到的码本数量分别为 5.33和 2.66, 则控制器可以依照四舍五入的方法将 5 个码本分配给基站 3 , 将 3个码本分配给基站 4, 也可以依照向下取整的方 法将 5个码本分配给基站 3 , 将 2个码本分配给基站 4。 完成码本数量的分配后,控制器指定基站在进行数据传输中可以使用的 不少于最小码本数量的码本, 并发送码本指令告知基站。 本实施例中, 通过采用 SCMA 的接入方式, 通过稀疏码实现非正交的 多用户接入, 大大提高了有限的无线资源上的用户接入数量, 基站可以独立 的对信息进行处理, 不需要基站之间进行数据交互和信道信息的交互, 减小 了系统的开销, 提高了网络传输的效率。 此外, 本实施例所提供的方法, 控 制器和基站之间所需的交互信息开销非常有限, 最少仅需向基站发送用于进 行数据传输的稀疏码码本, 对回传系统的影响极小。 实施例 3 在 SCMA 的通信系统中, 本实施例提供了一种数据传输方法, 如图 3 所示, 具体流程如下:
301 : 终端接收协作集中的基站发送的码本通知。 基站确定与终端进行数据传输时所使用的协作码本后, 发送码本通知。 其中, 码本通知用于基站将协作码本告知终端。 码本通知可以但不限定为通 过多种形式携带码本的信息, 例如直接携带码本本身, 或携带码本索引号、 码本序号等。 特别需要注意的是, 协作集中的每一个基站的协作码本互不相 同。 终端接收到码本通知后, 即可确定可以用于在进行数据传输的过程中使 用的码本。 在 SCMA系统的数据传输方法中, 稀疏码公共码本集中的稀疏码码本, 用于终端接入协作集中的基站使用。 终端在进行数据传输时, 需要使用稀疏 码公共码本集中的码本完成终端的接入与数据传输。 SCMA可以实现接入用户的数量大于正交资源块的数量,大大提高有限 的无线资源上的用户接入数量, 从而提高资源块的利用率。 可选的, 终端获取稀疏码公共码本集的方法可以具体为: 终端接收协作集中的基站发送的码本通知之前, 可以接收并保存协作集 中的基站发送的稀疏码公共码本集。 进一步可选的, 由于协作集中的各个基 站之间并无信息交互, 在进行数据传输时, 协作集中的每一个基站均可以向 终端发送稀疏码公共码本集。 可选的, 终端获取稀疏码公共码本集的方法还可以具体为: 由制造厂商等在终端的制造过程中, 对稀疏码公共码本集进行设置, 并 保存以便终端直接使用; 或在网络的运行过程中, 由相关的网络控制节点对 稀疏码公共码本集进行设置或更新, 并保存以便终端直接使用。 特别的, 当终端获取稀疏码公共码本集后, 若基站发送码本通知时只发 送码本的编号,终端即可根据获取的稀疏码公共码本集和码本通知携带的码 本编号, 确定在进行数据传输中可以使用的码本。
302: 终端使用码本通知所告知的协作码本, 与基站进行数据传输。 终端可以从码本通知中获取协作码本, 当终端接收到协作集中的每一个 基站发送的数据流时, 使用协作码本对接收的至少一个数据流进行译码。 可选的, 终端使用协作码本对接收的至少一个数据流进行译码的方法可 以具体为: 终端使用协作码本对接收到协作集中的每一个基站发送的至少一个数 据流进行译码。 可选的, 若基站 6和基站 7分别向终端发送了数据流 6和数 据流 7, 则终端进行译码的方法可以为联合译码, 以分别解出数据流 6和数 据流 7, 其中, 联合译码的方法为公知技术手段, 不再赘述。
进一步可选的, 若终端对至少一个数据流进行译码失败, 则向发送该译 码失败的数据流的基站发送重传请求, 其中重传请求用于要求发送译码失败 的数据流的基站重新发送该译码失败的数据流。 重传的方法可以但不限定为 采用自动重传请求 ( Automatic Repeat Request, ARQ )、 混合自动重传请求 ( Hybrid Automatic Repeat Request, HARQ )等现有技术, 此处不再赘述。
本实施例中, 通过采用 SCMA 的接入方式, 基站可以独立的对信息进 行处理, 不需要基站之间进行数据交互和信道信息的交互, 减小了系统的开 销, 提高了网络传输的效率。 此外, 由于终端可以分别接收和处理从不同基 站发来的不同数据流, 独立的进行数据流的重传操作, 使得网络的数据传输 过程的复杂度大大降低, 提高了网络传输的效率。
实施例 4
本实施例提供的场景中, 控制器 Controlle 所控制和管理的基站包括 BS41和 BS42等, 终端 UE4处于 BS41和 BS42的共同覆盖范围内, 并请求 BS41和 BS42进行数据传输,如图 4A所示。 Controller4确认由 BS41和 BS42 组成一个协作集为 UE4提供数据传输服务。 本实施例提供了一种数据传输 方法, 如图 4B所示, 具体流程如下:
401: 控制器确定协作集。
Controller4确定由 BS41和 BS42组成协作集, 为 UE4进行数据传输。
402: 控制器向协作集中的每一个基站发送码本指令。
本实施例中,协作集的稀疏码公共码本集为 S4 = {C41 , C42, C46} , 即稀疏码公共码本集中共有 6个码本, 可以供 BS41和 BS42进行数据传输 使用。
Controller4分别向协作集中的 BS41和 BS42发送码本指令 141和 142, 如图 4C所示, 141和 142中分别携带有控制器确定的稀疏码公共码本集的非 空子集 S41和 S42, 其中 S41 = {C41 , C42} , S42 = {C43, C44, C45, C46} , 用于指定 BS41和 BS42在进行数据传输中可以使用的码本。 403: 基站接收控制器发送的码本指令。 协作集中的 BS41和 BS42分别接收到码本指令 141和 142后,即可确定 可以用于在进行数据传输的过程中使用的码本。
404: 基站向终端发送码本通知。
BS41 向 UE4发送码本通知 N41 , 告知 UE4需要使用 C42码本接入 BS441; BS42向 UE4发送码本通知 N42, 告知 UE4需要使用 C44和 C45 接入 BS42, 如图 4D所示。
405: 终端接收协作集中的基站发送的码本通知。 UE4接收到分别 BS41和 BS42发送的码本通知 N41和 N42后, 即可确 定可以用于在进行数据传输的过程中使用的码本, 即 UE4在与 BS41进行的 数据传输中使用 C42, 在与 BS42进行的数据传输中使用 C44和 C45。
406: 基站与终端使用协作码本, 进行数据传输。
BS41向 UE4发送数据流 D41 ,并使用 C42对 D41进行吗本映射, BS42 向 UE4发送数据流 D42和 D43, 并分别使用 C44和 C45对 D42和 D43进 行码本映射后, BS41实际发送的数据流为 D41*C42, BS42实际发送的数据 流为 D42*C44+D43*C45, 其中运算符号 *为自定义运算符, Z=X*Y表征数 据流 X根据码本 Υ进行码本映射后得到的运算结果。
UE4使用 C42、 C44和 C45对接收到的数据流进行联合译码, 分别解出 D41、 D42和 D43。 实施例 5 本实施例提供的场景中, 控制器 Controlle 所控制和管理的基站包括 BS51、 BS52和 BS53等, 终端 UE5处于 BS51、 BS52和 BS53的共同覆盖 范围内, 如图 5A所示。 Controlle 根据 UE5发送的数据传输请求, 根据协 作集的组成方法确定 BS51、 BS52和 BS53组成一个协作集为 UE5提供数据 传输, 本实施例提供了一种数据传输方法, 如图 5B所示, 具体流程如下:
501: 控制器确定协作集。 Controller5确定由 BS51、 BS52和 BS53组成协作集 51 , 为 UE5进行数 据传输。
其中, BS51还属于另一个协作集 52。
502: 控制器从稀疏码接入码本集中确定至少一个可用于基站协作的码 本组成稀疏码公共码本集。
在本实施例提供的 SCMA 系统中, 全部可以使用的稀疏码接入码本集 为 S5 = {C51 , C52, ..· , C58}。 Controller5可以获取 BS51、 BS52和 BS53 可以使用的稀疏码接入码本集分别为 S51 = {C51 , C52, ..· , C58}、 S52 = {C51 , C52, ..· , C57}和 S53 = {C52, C53, ..· , C58} , Controller5可以保 留码本 C57为预留码本, 用于其他用途, 则 Controlle 确定协作集 51的稀 疏码公共码本集 S5,= {C52, C53, ··. , C56}。
503: 控制器向协作集中的每一个基站发送稀疏码公共码本集。
Controlle 将稀疏码公共码本集 S5,= {C52, C53, …, C56}分别发送给 BS51、 BS52和 BS53。
504: 基站接收并保存所述控制器发送的稀疏码公共码本集。
BS51、 BS52和 BS53接收并保存 Controller5发送的稀疏码公共码本集 S5,= {C52, C53, ··. , C56}。
505: 基站向控制器发送码本请求。
BS51、 BS52和 BS53分别确定各自所需的最小码本数量的信息。
BS51和 BS53确定所需的最小码本数量均为 1 , BS52确定所需的最小 码本数量为 2。
BS51、 BS52和 BS53分别向 Controlle 发送码本请求 Q51、 Q52和 Q53 , 如图 5C所示, 其中 Q51、 Q52和 Q53分别携带有 BS51、 BS52和 BS53各 自所需的最小码本数量的信息。
506: 控制器接收协作集中的每一个基站发送的码本请求, 根据最小码 本数量的信息, 确定协作集中的基站的最小码本数量的比例。
Controller5根据获取的 BS51 , BS52和 BS53发送的 Q51、 Q52和 Q53, 可以得到 BS51、 BS52和 BS53所需要的最小码本数量分别为 1、 2和 1 , 并 依照 BS51、 BS52和 BS53所需要的最小码本数量的比例, 对 BS51、 BS52 和 BS53在进行数据传输中可以使用的位于稀疏码公共码本集 S5,= {C52, C53, ··. , C56}中的码本的数量进行分配。 稀疏码公共码本集 S5,= {C52, C53 , …, C56}中的码本数量为 5 ,
Controller5依照向下取整方法确定分配给协作集 51 中每一个基站的码本数 量, 即分别为 BS51 , BS52和 BS53分配 1、 2和 1个码本, 其中具体的, 依 照顺序指定 S51,= {C52} , S52,= {C53, C54} , S53,= {C55 } ,用于指定 BS51、 BS52和 BS53在进行数据传输中可以使用的码本。 507: 控制器向协作集中的每一个基站发送码本指令。
Controller5分别向协作集 51中的 BS51 , BS52和 BS53发送码本指令 151、 152和 153, 如图 5D所示, 151、 152和 153中分别携带有控制器确定的稀疏 码公共码本集的非空子集 S51,= {C52}, S52,= {C53, C54} , S53,= {C55}, 用于指定 BS51、 BS52和 BS53在进行数据传输中可以使用的码本。 此外, Controlle 还需通过协作集信息, 指定 151为 BS51用于在协作 集 51中进行数据传输所使用的码本指令。
508: 基站从码本指令指定的码本中确定协作码本。
BS51和 BS53分别从 S51,= {C52}和 S53,= {C55 }中确定 C52和 C55作 为协作码本, BS52从 S52,= {C53, C54}中确定 C54作为协作码本, 用于在 数据传输的过程中与 UE5进行数据传输。 其中, BS52从 S52,= {C53, C54}中确定 C54作为协作码本可以采用任 一种公知技术手段, 例如, BS52根据 UE5反馈的 CQI信息, 确定可以使 UE5信道增益最大的 C54作为协作码本。
509: 基站向终端发送稀疏码公共码本集。 BS51. BS52和 BS53均向 UE5发送协作集 51的稀疏码公共码本集 S5,=
{C52, C53, ··. , C56}。 由于协作集 51 中的各个基站, 即 BS51 , BS52和 BS53之间无信息交互, 数据发送过程彼此独立, 因而 BS51 , BS52和 BS53 可以分别独立的向 UE5发送稀疏码公共码本集 S5,。 510: 基站向终端发送码本通知。
BS51、 BS52和 BS53分别向 UE5发送发送码本通知 N51、 N52和 N53 , 如图 5E所示,告知 UE5需要使用 C52码本接入 BS51 ,使用 C54接入 BS52, 使用 C55接入 BS53。 511 : 终端接收协作集中的基站发送的码本通知。
UE5接收到分别 BS51、 BS52和 BS53发送的码本通知 N51、 N52和 N53 后, 即可确定可以用于在进行数据传输的过程中使用的码本, 即 UE5 在与 BS51进行的数据传输中使用 C52, 在与 BS52进行的数据传输中使用 C54, 在与 BS53进行的数据传输中使用 C55。 512: 基站与终端使用协作码本, 进行数据传输。
BS51向 UE5发送数据流 D51 ,并使用 C52对 D51进行吗本映射, BS52 向 UE5发送数据流 D52, 并使用 C54对 D52进行码本映射, BS53向 UE5 发送数据流 D53 , 并使用 C55对 D53进行码本映射, 则 BS51实际发送的数 据流为 D51*C52, BS52实际发送的数据流为 D52*C54, BS53实际发送的数 据流为 D53*C55 ,其中运算符号 *为自定义运算符, Z=X*Y表征数据流 X根 据码本 γ进行码本映射后得到的运算结果。
UE5使用 C52、 C54和 C55对接收到的数据流进行联合译码, 分别解出 D51、 D52和 D53。 若终端对 D52进行译码失败, 则向发送 D52的 BS52发送重传请求, BS52接收到 UE5发送的重传请求后, 重新向 UE5发送 D52。 实施例 6 本实施例提供了一种基站 60, 基站 60可以为宏基站、 家庭基站或小基 站等通信系统中各种形态的基站, 如图 6所示, 具体包括如下:
601 : 接收机, 用于接收控制器发送的码本指令, 码本指令用于指定基 站在与终端数据传输中能够使用的码本, 码本属于稀疏码公共码本集, 稀疏 码公共码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏码 码本的集合,协作集为向同一终端提供数据传输的基站的集合且协作集中的 基站在与终端数据传输中能够使用的码本互不相同; 602: 发射机, 用于向终端发送码本通知, 码本通知用于将协作码本告 知终端, 协作码本为协作集中的基站与终端进行数据传输所采用的码本, 并 且协作码本属于协作集中的基站收到的码本指令所指定的码本;
603: 处理器, 用于使用协作码本, 与终端进行数据传输。 可选的, 在具体的基站设备中, 接收机与发射机可以为独立的形态各自 分别存在,也可以集成在一个收发机内,以同时承担接收机和发射机的功能, 本发明实施例对此并不限定。 作为对图 6所示基站 60的具体描述, 其中 601接收机可以进一步用于: 接收控制器发送的稀疏码公共码本集。 作为对图 6所示基站 60的具体描述, 其中 602发射机可以进一步用于: 向控制器发送码本请求,码本请求携带有基站所需的最小码本数量的信 息, 以便于控制器根据最小码本数量对基站在数据传输中能够使用的码本进 行分配。其中码本指令进一步用于指定基站在进行数据传输中能够使用的不 少于最小码本数量的的码本。 作为对图 6所示基站 60的具体描述, 其中 602发射机可以进一步用于: 向终端发送稀疏码公共码本集, 以便于终端接收并保存稀疏码公共码本 集, 并以便于终端根据码本通知从稀疏码公共码本集中确定与基站进行数据 传输的协作码本。 作为对图 6所示基站 60的具体描述, 其中 603处理器可以进一步用于: 根据数据传输中的数据流数量确定所需的最小码本数量, 其中最小码本 数量不少于数据流数量。 作为对图 6所示基站 60的具体描述, 其中 603处理器可以进一步用于: 根据码本指令在稀疏码公共码本集中确定基站在数据传输中能够使用 的码本。 作为对图 6所示基站 60的具体描述, 其中码本指令进一步包含协作集 信息, 603处理器可以进一步用于: 根据协作集信息确定码本指令适用的协作集。 实施例 7
本实施例提供了一种控制器 70, 控制器 70可以为独立的形态存在, 也 可以集成在通信系统中的其他控制节点内, 如图 7A所示, 具体包括如下:
701 : 处理器, 用于确定协作集, 协作集为向同一终端提供数据传输的 基站的集合;
702: 发射机, 用于向协作集中的每一个基站发送码本指令, 码本指令 用于指定协作集中的每一个基站在与终端数据传输中能够使用的码本,每一 个基站在数据传输中能够使用的码本属于稀疏码公共码本集且互不相同,稀 疏码公共码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏 码码本的集合。
作为对图 7A所示控制器 70的具体描述, 其中控制器 70的一种可选方 案如图 7B所示, 可以进一步包括:
703: 接收机, 用于接收协作集中的每一个基站发送的码本请求, 码本 请求携带有基站所需的最小码本数量的信息。
可选的, 在具体的控制器设备中, 接收机与发射机可以为独立的形态各 自分别存在, 也可以集成在一个收发机内, 以同时承担接收机和发射机的功 能, 本发明实施例对此并不限定。
作为对图 7B所示控制器 70的具体描述,其中 703接收机可以进一步用 于:
接收协作集中的每一个基站发送的码本请求,码本请求携带有基站所需 的最小码本数量的信息。码本指令进一步用于指定协作集中的每一个基站在 数据传输中能够使用的不少于最小码本数量的的码本。
作为对图 7B所示控制器 70的具体描述,其中 701处理器可以进一步用 于:
根据最小码本数量的信息,确定协作集中的每一个基站的最小码本数量 的比例, 根据最小码本数量的比例, 确定协作集中的每一个基站在与终端数 据传输中能够使用的码本数量的比例。
作为对图 7A或图 7B所示控制器 70的具体描述, 其中 702发射机向协 作集中的每一个基站发送的码本指令进一步包含协作集信息,协作集信息用 于接收到码本指令的基站根据协作集信息确定码本指令适用的协作集。 作为对图 7A或图 7B所示控制器 70的具体描述, 其中 702发射机可以 进一步用于: 向协作集中的每一个基站发送稀疏码公共码本集, 以便于协作集中的每 一个基站接收并保存稀疏码公共码本集, 并以便于协作集中的每一个基站根 据码本指令从稀疏码公共码本集中确定与终端进行数据传输的协作码本,协 作码本为协作集中的基站与终端进行数据传输所采用的码本。 实施例 8 本实施例提供了一种终端 80, 如图 8A所示, 具体包括如下:
801 : 接收机, 用于接收协作集中的至少一个基站发送的码本通知, 码 本通知用于至少一个基站将协作码本告知终端,协作码本为至少一个基站与 终端进行数据传输所采用的稀疏码码本,协作集为向同一终端提供数据传输 的基站的集合且协作集中的基站在与终端数据传输中能够使用的稀疏码码 本互不相同;
802: 处理器, 用于使用协作码本与至少一个基站进行数据传输。 作为对图 8A所示终端 80的具体描述,其中 801接收机可以进一步用于: 接收并保存协作集中的基站发送的稀疏码公共码本集。 作为对图 8A所示终端 80的具体描述,其中 802处理器可以进一步用于: 根据码本通知在稀疏码公共码本集中确定协作码本。 作为对图 8A所示终端 80的具体描述,其中 802处理器可以进一步用于: 从码本通知中获取协作码本,使用协作码本对接收的至少一个基站发送 的至少一个数据流进行译码。 作为对图 8A所示终端 80的具体描述, 其中终端 80的一种可选方案如 图 8B所示, 可以进一步包括:
803: 发射机, 用于向发送译码失败的数据流的基站发送重传请求, 重 传请求用于要求发送译码失败的数据流的基站重新发送译码失败的数据流。 可选的, 在具体的控制器设备中, 接收机与发射机可以为独立的形态各 自分别存在, 也可以集成在一个收发机内, 以同时承担接收机和发射机的功 能, 本发明实施例对此并不限定。
实施例 9 本实施例提供了一种基站 90, 基站 90可以为宏基站、 家庭基站或小基 站等通信系统中各种形态的基站, 如图 9所示, 具体包括如下:
901 : 接收单元, 用于接收控制器发送的码本指令, 码本指令用于指定 基站在与终端数据传输中能够使用的码本, 码本属于稀疏码公共码本集, 稀 疏码公共码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏 码码本的集合,协作集为向同一终端提供数据传输的基站的集合且协作集中 的基站在与终端数据传输中能够使用的码本互不相同;
902: 发射单元, 用于向终端发送码本通知, 码本通知用于将协作码本 告知终端, 协作码本为协作集中的基站与终端进行数据传输所采用的码本, 并且协作码本属于协作集中的基站收到的码本指令所指定的码本; 903: 处理单元, 用于使用协作码本, 与终端进行数据传输。 可选的, 在具体的基站设备中, 接收单元与发射单元可以为独立的形态 各自分别存在, 也可以集成在一个收发单元内, 以同时承担接收单元和发射 单元的功能, 本发明实施例对此并不限定。
作为对图 9所示基站 90的具体描述, 其中 901接收单元可以进一步用 于: 接收控制器发送的稀疏码公共码本集。 作为对图 9所示基站 90的具体描述, 其中 902发射单元可以进一步用 于:
向控制器发送码本请求,码本请求携带有基站所需的最小码本数量的信 息, 以便于控制器根据最小码本数量对基站在数据传输中能够使用的码本进 行分配。其中码本指令进一步用于指定基站在进行数据传输中能够使用的不 少于最小码本数量的的码本。
作为对图 9所示基站 90的具体描述, 其中 902发射单元可以进一步用 于:
向终端发送稀疏码公共码本集, 以便于终端接收并保存稀疏码公共码本 集, 并以便于终端根据码本通知从稀疏码公共码本集中确定与基站进行数据 传输的协作码本。
作为对图 9所示基站 90的具体描述, 其中 903处理单元可以进一步用 于:
根据数据传输中的数据流数量确定所需的最小码本数量, 其中最小码本 数量不少于数据流数量。
作为对图 9所示基站 90的具体描述, 其中 903处理单元可以进一步用 于:
根据码本指令在稀疏码公共码本集中确定基站在数据传输中能够使用 的码本。
作为对图 9所示基站 90的具体描述, 其中码本指令进一步包含协作集 信息, 903处理单元可以进一步用于: 根据协作集信息确定码本指令适用的协作集。
实施例 10
本实施例提供了一种控制器 100, 控制器 100可以为独立的形态存在, 也可以集成在通信系统中的其他控制节点内,如图 10A所示,具体包括如下:
1001: 处理单元, 用于确定协作集, 协作集为向同一终端提供数据传输 的基站的集合;
1002: 发射单元, 用于向协作集中的每一个基站发送码本指令, 码本指 令用于指定协作集中的每一个基站在与终端数据传输中能够使用的码本,每 一个基站在数据传输中能够使用的码本属于稀疏码公共码本集且互不相同, 稀疏码公共码本集为能够供协作集中的每一个基站进行数据传输使用的稀 疏码码本的集合。
作为对图 10A所示控制器 100的具体描述,其中控制器 100的一种可选 方案如图 10B所示, 可以进一步包括: 1003: 接收单元, 用于接收协作集中的每一个基站发送的码本请求, 码 本请求携带有基站所需的最小码本数量的信息。 可选的, 在具体的控制器设备中, 接收单元与发射单元可以为独立的形 态各自分别存在, 也可以集成在一个收发单元内, 以同时承担接收单元和发 射单元的功能, 本发明实施例对此并不限定。 作为对图 10B所示控制器 100的具体描述, 其中 1003接收单元可以进 一步用于: 接收协作集中的每一个基站发送的码本请求,码本请求携带有基站所需 的最小码本数量的信息。码本指令进一步用于指定协作集中的每一个基站在 数据传输中能够使用的不少于最小码本数量的的码本。 作为对图 10B所示控制器 100的具体描述, 其中 1001处理单元可以进 一步用于: 根据最小码本数量的信息,确定协作集中的每一个基站的最小码本数量 的比例, 根据最小码本数量的比例, 确定协作集中的每一个基站在与终端数 据传输中能够使用的码本数量的比例。 作为对图 10A或图 10B所示控制器 100的具体描述, 其中 1002发射单 元向协作集中的每一个基站发送的码本指令进一步包含协作集信息,协作集 信息用于接收到码本指令的基站根据协作集信息确定码本指令适用的协作 集。 作为对图 10A或图 10B所示控制器 100的具体描述, 其中 1002发射单 元可以进一步用于: 向协作集中的每一个基站发送稀疏码公共码本集, 以便于协作集中的每 一个基站接收并保存稀疏码公共码本集, 并以便于协作集中的每一个基站根 据码本指令从稀疏码公共码本集中确定与终端进行数据传输的协作码本,协 作码本为协作集中的基站与终端进行数据传输所采用的码本。 实施例 11 本实施例提供了一种终端 110, 如图 11A所示, 具体包括如下:
1101: 接收单元, 用于接收协作集中的至少一个基站发送的码本通知, 码本通知用于至少一个基站将协作码本告知终端,协作码本为至少一个基站 与终端进行数据传输所采用的稀疏码码本,协作集为向同一终端提供数据传 输的基站的集合且协作集中的基站在与终端数据传输中能够使用的稀疏码 码本互不相同; 1102: 处理单元, 用于使用协作码本与至少一个基站进行数据传输。 作 为对图 11A所示终端 110的具体描述,其中 1101接收单元可以进一步用于: 接收并保存协作集中的基站发送的稀疏码公共码本集。
作为对图 11A所示终端 110的具体描述, 其中 1102处理单元可以进一 步用于:
根据码本通知在稀疏码公共码本集中确定协作码本。 作为对图 11A所示终端 110的具体描述, 其中 1102处理单元可以进一 步用于:
从码本通知中获取协作码本,使用协作码本对接收的至少一个基站发送 的至少一个数据流进行译码。 作为对图 11A所示终端 110的具体描述,其中终端 110的一种可选方案 如图 11B所示, 可以进一步包括:
1103: 发射单元, 用于向发送译码失败的数据流的基站发送重传请求, 重传请求用于要求发送译码失败的数据流的基站重新发送译码失败的数据 流。 可选的, 在具体的控制器设备中, 接收单元与发射单元可以为独立的形 态各自分别存在, 也可以集成在一个收发单元内, 以同时承担接收单元和发 射单元的功能, 本发明实施例对此并不限定。
上述各实施例对于各参数和各设备的命名本领域技术人员可以采用其 他命名方式, 亦在本发明方案保护范围内。 本发明提供了一种数据传输方法和装置, 利用协作集中的基站在与终端 数据传输中能够使用的稀疏码码本互不相同, 实现基站之间独立的与终端进 行数据传输, 不需要基站之间进行数据交互和信道信息的交互, 减小了系统 的开销, 提高了网络传输的效率。
通过以上的实施方式的描述, 所属领域的技术人员能够清楚地了解到本 发明可借助软件加必需的通用硬件的方式来实现。 基于这样的理解, 本发明 的技术方案中的全部或部分步骤是能够通过程序来指令相关的硬件来完成, 所述的程序能够存储于一计算机可读取存储介质中, 该程序在执行时, 包括 如上述方法实施例的步骤, 所述的存储介质, 如: ROM/RAM、 磁碟、 光盘 等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 能够轻 易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保 护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种基站, 其特征在于, 所述基站包括: 接收机, 用于接收控制器发送的码本指令, 所述码本指令用于指定所述 基站在与终端数据传输中能够使用的码本, 所述码本属于稀疏码公共码本 集, 所述稀疏码公共码本集为能够供协作集中的每一个基站进行数据传输使 用的稀疏码码本的集合, 所述协作集为向同一终端提供数据传输的基站的集 合且所述协作集中的基站在与终端数据传输中能够使用的码本互不相同; 发射机, 用于向终端发送码本通知, 所述码本通知用于将协作码本告知 所述终端, 所述协作码本为协作集中的基站与终端进行数据传输所采用的码 本, 并且所述协作码本属于协作集中的基站收到的码本指令所指定的码本; 处理器, 用于使用所述协作码本, 与所述终端进行数据传输。
2、 根据权利要求 1所述的基站, 其特征在于, 所述发射机进一步用于: 向所述控制器发送码本请求, 所述码本请求携带有所述基站所需的最小 码本数量的信息, 以便于所述控制器根据所述最小码本数量对基站在数据传 输中能够使用的码本进行分配;
其中所述码本指令进一步用于指定基站在进行数据传输中能够使用的 不少于所述最小码本数量的的码本。
3、 根据权利要求 2所述的基站, 其特征在于, 所述处理器进一步用于: 根据数据传输中的数据流数量确定所需的最小码本数量, 其中所述最小 码本数量不少于所述数据流数量。
4、 根据权利要求 1至 3所述的任一种基站, 其特征在于: 所述接收机进一步用于接收所述控制器发送的所述稀疏码公共码本集; 所述处理器进一步用于根据所述码本指令在所述稀疏码公共码本集中 确定所述基站在数据传输中能够使用的码本。
5、 根据权利要求 1至 4所述的任一种基站, 其特征在于:
所述码本指令进一步包含协作集信息; 所述处理器进一步用于根据所述协作集信息确定所述码本指令适用的 协作集。
6、 根据权利要求 1至 5所述的任一种基站, 其特征在于, 所述发射机 进一步用于: 向所述终端发送所述稀疏码公共码本集, 以便于所述终端接收并保存所 述稀疏码公共码本集, 并以便于所述终端根据所述码本通知从所述稀疏码公 共码本集中确定与所述基站进行数据传输的协作码本。
7、 一种控制器, 其特征在于, 所述控制器包括: 处理器, 用于确定协作集, 所述协作集为向同一终端提供数据传输的基 站的集合; 发射机, 用于向所述协作集中的每一个基站发送码本指令, 所述码本指 令用于指定协作集中的每一个基站在与终端数据传输中能够使用的码本,所 述每一个基站在数据传输中能够使用的码本属于稀疏码公共码本集且互不 相同, 所述稀疏码公共码本集为能够供协作集中的每一个基站进行数据传输 使用的稀疏码码本的集合。
8、 根据权利要求 7所述的控制器, 其特征在于: 所述控制器还包括接收机, 用于接收所述协作集中的每一个基站发送的 码本请求, 所述码本请求携带有基站所需的最小码本数量的信息; 所述处理器进一步用于根据最小码本数量的信息,确定所述协作集中的 每一个基站的最小码本数量的比例, 根据所述最小码本数量的比例, 确定协 作集中的每一个基站在与终端数据传输中能够使用的码本数量的比例。
9、 根据权利要求 8所述的控制器, 其特征在于, 所述码本指令进一步 用于指定协作集中的每一个基站在数据传输中能够使用的不少于最小码本 数量的的码本。
10、 根据权利要求 7至 9所述的任一种控制器, 其特征在于, 所述码本 指令进一步包含协作集信息, 所述协作集信息用于接收到码本指令的基站根 据所述协作集信息确定所述码本指令适用的协作集。
11、 根据权利要求 7至 10所述的任一种控制器, 其特征在于, 所述发 射机进一步用于: 向所述协作集中的每一个基站发送所述稀疏码公共码本集, 以便于所述 协作集中的每一个基站接收并保存所述稀疏码公共码本集, 并以便于所述协 作集中的每一个基站根据所述码本指令从所述稀疏码公共码本集中确定与 终端进行数据传输的协作码本, 所述协作码本为协作集中的基站与终端进行 数据传输所采用的码本。
12、 一种终端, 其特征在于, 所述终端包括: 接收机, 用于接收协作集中的至少一个基站发送的码本通知, 所述码本 通知用于所述至少一个基站将协作码本告知所述终端, 所述协作码本为所述 至少一个基站与终端进行数据传输所采用的稀疏码码本, 所述协作集为向同 一终端提供数据传输的基站的集合且所述协作集中的基站在与终端数据传 输中能够使用的稀疏码码本互不相同;
处理器, 用于使用所述协作码本与所述至少一个基站进行数据传输。
13、 根据权利要求 12所述的终端, 其特征在于:
所述接收机进一步用于接收并保存协作集中的基站发送的稀疏码公共 码本集;
所述处理器进一步用于根据所述码本通知在所述稀疏码公共码本集中 确定所述协作码本。
14、 根据权利要求 12或 13所述的终端, 其特征在于, 所述处理器进一 步用于:
使用所述协作码本对接收的所述至少一个基站发送的至少一个数据流 进行译码。
15、 根据权利要求 14所述的终端, 其特征在于, 若处理器对至少一个 数据流进行译码失败, 则所述终端还包括: 发射机, 用于向发送译码失败的数据流的基站发送重传请求, 所述重传 请求用于要求发送译码失败的数据流的基站重新发送所述译码失败的数据 流。
16、 一种数据传输方法, 其特征在于: 基站接收控制器发送的码本指令,所述码本指令用于指定所述基站在与 终端数据传输中能够使用的码本, 所述码本属于稀疏码公共码本集, 所述稀 疏码公共码本集为能够供协作集中的每一个基站进行数据传输使用的稀疏 码码本的集合,所述协作集为向同一终端提供数据传输的基站的集合且所述 协作集中的基站在与终端数据传输中能够使用的码本互不相同;
基站向终端发送码本通知, 所述码本通知用于将协作码本告知所述终 端, 所述协作码本为协作集中的基站与终端进行数据传输所采用的码本, 并 且所述协作码本属于协作集中的基站收到的码本指令所指定的码本; 基站使用所述协作码本, 与所述终端进行数据传输。
17、 根据权利要求 16所述的方法, 其特征在于, 基站接收所述控制器 发送的所述码本指令之前, 还包括: 向所述控制器发送码本请求, 所述码本请求携带有所述基站所需的最小 码本数量的信息, 以便于所述控制器根据所述最小码本数量对基站在数据传 输中能够使用的码本进行分配;
其中所述码本指令进一步用于指定基站在进行数据传输中能够使用的 不少于所述最小码本数量的的码本。
18、 根据权利要求 17所述的方法, 其特征在于, 基站根据数据传输中 的数据流数量确定所需的最小码本数量, 其中所述最小码本数量不少于所述 数据流数量。
19、 根据权利要求 16至 18所述的任一种方法, 其特征在于, 基站向所 述终端发送所述码本通知之前, 还包括:
基站接收所述控制器发送的所述稀疏码公共码本集; 基站根据所述码本指令在所述稀疏码公共码本集中确定所述基站在数 据传输中能够使用的码本。
20、 根据权利要求 16至 19所述的任一种方法, 其特征在于: 所述码本指令进一步包含协作集信息; 基站根据所述协作集信息确定所述码本指令适用的协作集。
21、 根据权利要求 16至 20所述的任一种方法, 其特征在于, 基站向所 述终端发送所述码本通知之前, 还包括: 基站向所述终端发送所述稀疏码公共码本集, 以便于所述终端接收并保 存所述稀疏码公共码本集 , 并以便于所述终端根据所述码本通知从所述稀疏 码公共码本集中确定与所述基站进行数据传输的协作码本。
22、 一种数据传输方法, 其特征在于: 控制器确定协作集, 所述协作集为向同一终端提供数据传输的基站的集 合;
控制器向所述协作集中的每一个基站发送码本指令,所述码本指令用于 指定协作集中的每一个基站在与终端数据传输中能够使用的码本, 所述每一 个基站在数据传输中能够使用的码本属于稀疏码公共码本集且互不相同,所 述稀疏码公共码本集为能够供协作集中的每一个基站进行数据传输使用的 稀疏码码本的集合。
23、 根据权利要求 22所述的方法, 其特征在于, 控制器向所述协作集 中的每一个基站发送所述码本指令之前, 还包括: 控制器接收所述协作集中的每一个基站发送的码本请求, 所述码本请求 携带有基站所需的最小码本数量的信息; 控制器根据最小码本数量的信息,确定所述协作集中的每一个基站的最 小码本数量的比例; 控制器根据所述最小码本数量的比例,确定协作集中的每一个基站在与 终端数据传输中能够使用的码本数量的比例。
24、 根据权利要求 23所述的方法, 其特征在于, 所述码本指令进一步 用于指定协作集中的每一个基站在数据传输中能够使用的不少于最小码本 数量的的码本。
25、 根据权利要求 22至 24所述的任一种方法, 其特征在于, 所述码本 指令进一步包含协作集信息, 所述协作集信息用于接收到码本指令的基站根 据所述协作集信息确定所述码本指令适用的协作集。
26、 根据权利要求 22至 25所述的任一种方法, 其特征在于, 控制器向 所述协作集中的每一个基站发送所述码本指令之前, 还包括: 控制器向所述协作集中的每一个基站发送所述稀疏码公共码本集, 以便 于所述协作集中的每一个基站接收并保存所述稀疏码公共码本集, 并以便于 所述协作集中的每一个基站根据所述码本指令从所述稀疏码公共码本集中 确定与终端进行数据传输的协作码本, 所述协作码本为协作集中的基站与终 端进行数据传输所采用的码本。
27、 一种数据传输方法, 其特征在于: 终端接收协作集中的至少一个基站发送的码本通知,所述码本通知用于 所述至少一个基站将协作码本告知所述终端, 所述协作码本为所述至少一个 基站与终端进行数据传输所采用的稀疏码码本, 所述协作集为向同一终端提 供数据传输的基站的集合且所述协作集中的基站在与终端数据传输中能够 使用的稀疏码码本互不相同; 终端使用所述协作码本与所述至少一个基站进行数据传输。
28、 根据权利要求 27所述的方法, 其特征在于, 终端接收所述协作集 中的至少一个基站发送的所述码本通知之前, 还包括: 终端接收并保存协作集中的基站发送的稀疏码公共码本集; 终端根据所述码本通知在所述稀疏码公共码本集中确定所述协作码本。
29、 根据权利要求 27或 28所述的方法, 其特征在于, 终端使用所述码 本通知告知的所述协作码本, 与所述至少一个基站进行数据传输具体为: 终端使用所述协作码本对接收的所述至少一个基站发送的至少一个数 据流进行译码。
30、 根据权利要求 29所述的方法, 其特征在于, 若终端对至少一个数 据流进行译码失败, 则所述方法还包括: 终端发送译码失败的数据流的基站发送重传请求, 所述重传请求用于要 求发送译码失败的数据流的基站重新发送所述译码失败的数据流。
PCT/CN2013/084404 2013-09-27 2013-09-27 一种数据传输方法和装置 WO2015042849A1 (zh)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AU2013401795A AU2013401795A1 (en) 2013-09-27 2013-09-27 Data transmission method and apparatus
RU2016116244A RU2633370C1 (ru) 2013-09-27 2013-09-27 Устройство и способ передачи данных
BR112016006537-9A BR112016006537B1 (pt) 2013-09-27 2013-09-27 Método e aparelho de transmissão de dados
PCT/CN2013/084404 WO2015042849A1 (zh) 2013-09-27 2013-09-27 一种数据传输方法和装置
CN201380079395.2A CN105766056B (zh) 2013-09-27 2013-09-27 一种数据传输方法和装置
CA2924638A CA2924638C (en) 2013-09-27 2013-09-27 Data transmission method and apparatus
KR1020167009914A KR101879963B1 (ko) 2013-09-27 2013-09-27 데이터 전송 방법과 장치
EP13894565.4A EP3051923B1 (en) 2013-09-27 2013-09-27 Data transmission method and device
US15/080,593 US9967010B2 (en) 2013-09-27 2016-03-25 Data transmission method and apparatus
AU2017279700A AU2017279700B2 (en) 2013-09-27 2017-12-20 Data transmission method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/084404 WO2015042849A1 (zh) 2013-09-27 2013-09-27 一种数据传输方法和装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/080,593 Continuation US9967010B2 (en) 2013-09-27 2016-03-25 Data transmission method and apparatus

Publications (1)

Publication Number Publication Date
WO2015042849A1 true WO2015042849A1 (zh) 2015-04-02

Family

ID=52741797

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/084404 WO2015042849A1 (zh) 2013-09-27 2013-09-27 一种数据传输方法和装置

Country Status (9)

Country Link
US (1) US9967010B2 (zh)
EP (1) EP3051923B1 (zh)
KR (1) KR101879963B1 (zh)
CN (1) CN105766056B (zh)
AU (2) AU2013401795A1 (zh)
BR (1) BR112016006537B1 (zh)
CA (1) CA2924638C (zh)
RU (1) RU2633370C1 (zh)
WO (1) WO2015042849A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170108007A (ko) 2014-12-22 2017-09-26 후아웨이 테크놀러지 컴퍼니 리미티드 지시 정보 전송 방법 및 장치
KR102056746B1 (ko) * 2014-12-22 2019-12-17 후아웨이 테크놀러지 컴퍼니 리미티드 지시 정보를 전송하는 방법 및 장치
US10944512B2 (en) * 2017-11-17 2021-03-09 Qualcomm Incorporated Code block group retransmission
CN110650539B (zh) * 2018-06-26 2021-08-20 北京大学 一种基于scma的无线通信下行链路资源分配方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984572A (zh) * 2010-12-02 2011-03-09 中国科学技术大学 一种适用于联合传输的自适应预编码矩阵索引反馈方法
CN101989894A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 协作通信的方法、设备和系统
CN102244567A (zh) * 2010-05-13 2011-11-16 清华大学 通信控制服务器、基站、终端、联合服务系统及方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
RU2392751C2 (ru) * 2005-08-30 2010-06-20 Квэлкомм Инкорпорейтед Поддержка предварительного кодирования и sdma
US8009701B2 (en) 2007-08-13 2011-08-30 Qualcomm Incorporated Secondary synchronization codebook for E-utran
US8406171B2 (en) * 2008-08-01 2013-03-26 Texas Instruments Incorporated Network MIMO reporting, control signaling and transmission
US8983397B2 (en) 2008-10-10 2015-03-17 Qualcomm Incorporated Method and apparatus for channel feedback by multiple description coding in a wireless communication system
CN101888637B (zh) 2009-05-12 2013-07-24 上海无线通信研究中心 一种多时隙多基站协作通信方法
US8385454B2 (en) * 2009-09-09 2013-02-26 Nec Laboratories America, Inc. Robust linear precoder designs for multi-cell downlink transmission
US8599751B2 (en) * 2009-09-14 2013-12-03 Samsung Electronics Co., Ltd. Clustered multi-cell multi-user multiple input multiple output communication system using cell-edge user selection scheme
KR101652869B1 (ko) * 2009-11-02 2016-09-01 삼성전자주식회사 네트워크 다중 입출력 시스템에서 협력 멀티 포인트 송신을 위한 동적 채널 피드백 제어 방법
CN102056320A (zh) 2009-11-04 2011-05-11 华为技术有限公司 一种基站协作的系统和方法
CN102195760A (zh) * 2010-03-16 2011-09-21 松下电器产业株式会社 无线通信系统、基站、终端及码本生成方法
CN101807973B (zh) * 2010-03-19 2012-08-29 北京航空航天大学 用于单用户多基站协作系统的低反馈量码本的形成方法
PT2556712T (pt) * 2010-04-05 2020-10-30 Nokia Technologies Oy Feedback de informação do estado do canal para entrada múltipla de ligação descendente aprimorada - operação de saída múltipla
US8711969B2 (en) 2011-11-11 2014-04-29 Fujitsu Limited Global codebook for coordinated multi-point processing
US9240853B2 (en) 2012-11-16 2016-01-19 Huawei Technologies Co., Ltd. Systems and methods for sparse code multiple access
US9166663B2 (en) 2012-12-14 2015-10-20 Futurewei Technologies, Inc. System and method for open-loop MIMO communications in a SCMA communications system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101989894A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 协作通信的方法、设备和系统
CN102244567A (zh) * 2010-05-13 2011-11-16 清华大学 通信控制服务器、基站、终端、联合服务系统及方法
CN101984572A (zh) * 2010-12-02 2011-03-09 中国科学技术大学 一种适用于联合传输的自适应预编码矩阵索引反馈方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3051923A4 *

Also Published As

Publication number Publication date
AU2017279700A1 (en) 2018-01-18
BR112016006537B1 (pt) 2022-10-04
US20160211896A1 (en) 2016-07-21
US9967010B2 (en) 2018-05-08
AU2017279700B2 (en) 2019-10-03
CA2924638C (en) 2019-08-20
KR20160057452A (ko) 2016-05-23
AU2013401795A1 (en) 2016-04-14
CN105766056A (zh) 2016-07-13
RU2633370C1 (ru) 2017-10-12
BR112016006537A2 (pt) 2017-08-01
EP3051923A4 (en) 2017-06-07
KR101879963B1 (ko) 2018-07-18
CN105766056B (zh) 2019-09-13
EP3051923A1 (en) 2016-08-03
EP3051923B1 (en) 2018-12-12
CA2924638A1 (en) 2015-04-02

Similar Documents

Publication Publication Date Title
KR102042578B1 (ko) Mtc 공존성을 위한 향상된 노드 b(enb) 및 방법
WO2016000556A1 (zh) 通信设备、基站和通信方法
JP2019504572A (ja) ダウンリンク制御情報の伝送方法及び装置
WO2010057446A1 (zh) 协作多点传输中确定资源映射的方法、网络设备及系统
WO2021057805A1 (zh) 一种通信方法及装置
CN104885554A (zh) 用于设备间通信的参考信号测量
CN104885398A (zh) 用于设备间通信的方法和装置
CN106063325A (zh) 用于区分d2d发现的有效载荷大小的装置、系统和方法
US11523300B2 (en) Method and apparatus for configuring sidelink data bearer in wireless communication system
CN108353401A (zh) 用于v2x应用的lte-d通信
AU2017279700B2 (en) Data transmission method and apparatus
CN106464296A (zh) 传输数据的方法、设备及系统
CN113271180A (zh) 混合自动重传请求harq位图信息的反馈方法及相关设备
WO2021043174A1 (zh) 一种通信方法及装置
CN112152761B (zh) 一种通信方法、装置及存储介质
US20210376967A1 (en) Method and apparatus for transmitting and receiving feedback signal in communication system
WO2017133479A1 (zh) 一种下行控制信息传输方法及装置
EP4030666A1 (en) Method for processing hybrid automatic repeat request, and communication apparatus
US20240008044A1 (en) Transmission configuration indication (tci) in downlink control information (dci) rules and associated techniques
US20210376968A1 (en) Feedback method and apparatus
CN113747372A (zh) 一种基于d2d的组播重传方法及系统
CN108173829B (zh) 一种高负载场景下的视频多播方法
WO2018024055A1 (zh) 上行数据传输方法及装置
US20230370142A1 (en) Multiple panel assistance information
Laya et al. Reliable machine-to-machine multicast services with multi-radio cooperative retransmissions

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: 13894565

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2924638

Country of ref document: CA

REEP Request for entry into the european phase

Ref document number: 2013894565

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2013894565

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112016006537

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 2013401795

Country of ref document: AU

Date of ref document: 20130927

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20167009914

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: IDP00201602752

Country of ref document: ID

ENP Entry into the national phase

Ref document number: 2016116244

Country of ref document: RU

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 112016006537

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20160324