WO2014153708A1 - 通信方法、基站、用户设备和系统 - Google Patents

通信方法、基站、用户设备和系统 Download PDF

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Publication number
WO2014153708A1
WO2014153708A1 PCT/CN2013/073142 CN2013073142W WO2014153708A1 WO 2014153708 A1 WO2014153708 A1 WO 2014153708A1 CN 2013073142 W CN2013073142 W CN 2013073142W WO 2014153708 A1 WO2014153708 A1 WO 2014153708A1
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WO
WIPO (PCT)
Prior art keywords
multiple access
access mode
user equipment
mode
base station
Prior art date
Application number
PCT/CN2013/073142
Other languages
English (en)
French (fr)
Inventor
吕永霞
汲桐
张雯
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 JP2016504433A priority Critical patent/JP6167442B2/ja
Priority to CN201380040214.5A priority patent/CN104508998B/zh
Priority to PCT/CN2013/073142 priority patent/WO2014153708A1/zh
Priority to EP13879807.9A priority patent/EP2966788B1/en
Publication of WO2014153708A1 publication Critical patent/WO2014153708A1/zh
Priority to US14/862,958 priority patent/US9844035B2/en
Priority to US15/815,283 priority patent/US10187877B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method, a base station, a user equipment, and a system. Background technique
  • the transmission and reception of data at a specific logical location is referred to as a multiple access mode, and the specific logical location is divided by time, frequency or spreading codeword.
  • the system implements communication between the base station and multiple user equipments through multiple access.
  • a communication system adopts a multiple access method to implement communication between a base station and a user equipment.
  • the base station transmits downlink data to different user equipments through different subcarriers, and the user equipment The uplink data is transmitted to the base station through the corresponding subcarrier. Since the base station and different user equipments communicate through mutually orthogonal subcarriers, in the communication system using the OFDMA multiple access scheme, different user equipments do not interfere with each other, so they have good anti-interference. .
  • OFDM Orthogonal Frequency Division Multiple Access
  • a communication system uses a multiple access method to implement communication between a base station and individual user equipments, although having a multiple access method
  • M2M Machine to Machine
  • different types of requirements may be required in the same network.
  • a communication system there is a user equipment in an environment such as a basement or a mine, which requires the communication system to have a strong coverage.
  • the OFDMA multiple access method can meet the requirements of the communication system, but for the communication system.
  • the OFDMA multiple access method cannot meet the above requirements. Summary of the invention
  • the present invention provides a communication method, a base station, a user equipment, and a system, in order to solve the problem that the existing communication system cannot meet the requirements of different user equipments at the same time. Place
  • the technical solutions are as follows:
  • a communication method for a base station side, where the method includes:
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the receiving user equipment uses a specified multiple access mode to send uplink data sent by the time-frequency resource corresponding to the specified multiple access mode, Includes:
  • the predetermined sending manner includes: broadcasting a notification by using a system or by signaling.
  • the sending, by the predetermined sending manner, the at least two multiple access modes and the time-frequency resource to the user equipment Before the correspondence between the two it also includes:
  • the predetermined division manner includes any one of three manners according to time domain division, frequency domain division, and time-frequency domain division.
  • the method further includes:
  • the corresponding multiple access mode is the first multiple access mode
  • the specified multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • the using the corresponding multiple access manner in the corresponding multiple access manner Sending downlink data to the user equipment on the corresponding time-frequency resource including:
  • the corresponding multiple access manner is used in the corresponding After the time-frequency resource corresponding to the multiple access mode sends the downlink data to the user equipment, the method further includes:
  • the downlink data is re-transmitted to the user equipment by using another multiple access manner different from the corresponding multiple access manner in the at least two multiple access modes.
  • the predetermined condition comprises multiple access
  • the method includes: before the providing the corresponding relationship to the user equipment, the method further includes:
  • the second aspect provides a communication method, where the user equipment side is used, where the method includes: acquiring a correspondence between at least two multiple access modes and time-frequency resources;
  • the base station uses the specified multiple access method to the time-frequency resource corresponding to the specified multiple access mode;
  • the at least two multiple access modes include the first multiple access mode, the second multiple access mode, and the third multiple access mode
  • the first multiple access mode is an orthogonal frequency division multiplexing multiple access (OFDMA) multiple access mode or a single carrier frequency division multiple access (SC-FDMA multiple access mode)
  • the second multiple access mode is OFDMA+ code division multiple access access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode
  • the third multiple access mode is OFDMA + interleaved multiple access IDMA multiple access mode or SC-FDMA + IDMA multiple access mode.
  • the obtaining the correspondence between the at least two multiple access modes and the time-frequency resource includes:
  • the base station And receiving the corresponding relationship that is sent by the base station according to a predetermined sending manner, where the predetermined sending manner includes: sending a notification by using a system broadcast or by signaling.
  • the predetermined condition includes at least one of a QOS priority of a service type, a signal strength, a size of a data block in a service type, and a multiple access mode selection range. Selecting a multiple access mode as the designated multiple access mode in the first multiple access mode, the second multiple access mode, and the third multiple access mode according to a predetermined condition, including:
  • the predetermined condition includes a QOS priority of the service type, selecting the first multiple access mode as the designated multiple access mode when the QOS priority of the service type is high;
  • the predetermined condition includes a signal strength, selecting the second multiple access mode as the designated multiple access mode when the signal strength is lower than a first preset threshold;
  • the third multiple access mode is selected as the designated multiple access mode
  • the predetermined condition includes a multiple access mode selection range, selecting a multiple access mode as the designated multiple access mode among the selectable ranges defined by the multiple access mode selection range.
  • the selecting is performed in the at least two multiple access manners according to a predetermined condition
  • a multiple access method before the specified multiple access method also includes:
  • the multiple access mode selection range is a pre-agreed multiple access mode selection range
  • the optional multiple access mode in the multiple access mode selection range is After the multiple access mode is selected as the multiple access mode in the first multiple access mode, the second multiple access mode, and the third multiple access mode according to the predetermined condition, the method further includes:
  • the first multiple access mode, the second multiple access mode, and the third multiple access are re-according according to the predetermined condition.
  • a multiple access mode is selected as the designated multiple access mode.
  • the receiving the base station adopts a corresponding multiple access manner After the downlink data sent on the time-frequency resource corresponding to the corresponding multiple access mode, the method further includes:
  • a base station in a third aspect, includes:
  • the uplink receiving module is configured to receive uplink data that is sent by the user equipment on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode, where the specified multiple access mode is that the user equipment is at least two according to a predetermined condition.
  • a downlink sending module configured to send, by using a corresponding multiple access mode, downlink data to the user equipment in a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access manner is based on a pre-stored correspondence relationship in the at least Queryed between the two multiple access modes and the received by the uplink receiving module Specifying a multiple access method associated with multiple access mode;
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the base station further includes:
  • the relationship sending module is configured to send a correspondence between the at least two multiple access modes and the time-frequency resource to the user equipment according to a predetermined sending manner
  • the predetermined sending manner includes: broadcasting a notification by using a system or by signaling.
  • the base station further includes:
  • a relationship generating module configured to generate a correspondence between the at least two multiple access modes and the time-frequency resource according to a predetermined division manner
  • the predetermined division manner includes any one of three manners according to time domain division, frequency domain division, and time-frequency domain division.
  • the base station further includes:
  • a storage relationship module configured to store a one-to-one correspondence between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes:
  • the corresponding multiple access mode is the first multiple access mode
  • the specified multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • the downlink sending module includes: Query unit and sending unit;
  • the querying unit is configured to query, by the uplink receiving module, a corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment last time;
  • the sending unit is configured to send downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access mode that is queried by the query unit.
  • the base station further includes:
  • a retransmission module configured to: if the user equipment does not receive the feedback of the downlink data sent by the downlink sending module, use the at least two multiple access modes provided by the relationship providing module The other multiple access manners in which the corresponding multiple access modes are different are used to retransmit downlink data to the user equipment.
  • the predetermined condition comprises multiple access The mode selection range
  • the base station further includes:
  • a signaling sending module configured to send, to the user equipment, signaling for configuring a multiple access mode selection range, where the multiple access mode selection range is that the user equipment is in the at least two multiple access modes according to a predetermined condition Optional range when selecting multiple access mode.
  • a fourth aspect provides a user equipment, where the user equipment includes:
  • a relationship obtaining module configured to obtain a correspondence between at least two types of multiple access modes and time-frequency resources
  • a mode selection module configured to: in the at least two multiple access modes acquired by the relationship acquiring module according to a predetermined condition Select a multiple access method as the designated multiple access method
  • An uplink sending module configured to send, by using the specified multiple access mode selected by the mode selection module, uplink data to the base station on a time-frequency resource corresponding to the specified multiple access mode;
  • a downlink receiving module configured to receive downlink data that is sent by the base station in a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is that the base station is in accordance with a pre-stored correspondence relationship.
  • the at least two multiple access modes include any two or all three of the first multiple access mode, the second multiple access mode, and the third multiple access mode, and the first multiple access mode is orthogonal frequency division multiplexing.
  • the second multiple access mode is OFDMA + code division multiple access CDMA multiple access mode or SC-FDMA + CDMA Address mode
  • the third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the relationship acquiring module includes:
  • a relationship obtaining module configured to obtain a correspondence between at least two types of multiple access modes and time-frequency resources
  • a mode selection module configured to: in the at least two multiple access modes acquired by the relationship acquiring module according to a predetermined condition Select a multiple access method as the designated multiple access method
  • An uplink sending module configured to send, by using the specified multiple access mode selected by the mode selection module, uplink data to the base station on a time-frequency resource corresponding to the specified multiple access mode;
  • a downlink receiving module configured to receive downlink data that is sent by the base station in a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is that the base station is in accordance with a pre-stored correspondence relationship.
  • the at least two multiple access modes include any two or all three of the first multiple access mode, the second multiple access mode, and the third multiple access mode, and the first multiple access mode is orthogonal frequency division multiplexing.
  • the second multiple access mode is OFDMA + code division multiple access CDMA multiple access mode or SC-FDMA + CDMA Address mode
  • the third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the predetermined condition includes at least one of a QOS priority of a service type, a signal strength, a size of a data block in a service type, and a multiple access mode selection range.
  • the mode selection module includes:
  • the first selecting unit configured to: when the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the designated multiple access mode when a QOS priority of the service type is high ;
  • the second selecting unit is configured to: if the predetermined condition includes a signal strength, select the second multiple access mode as the designated multiple access mode when the signal strength is lower than a first preset threshold;
  • the third selecting unit is configured to: if the predetermined condition includes a size of a data block in a service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold, select the third multiple Address mode as the specified multiple access method;
  • the fourth selecting unit configured to: if the predetermined condition includes a multiple access mode selection range, select a multiple access mode as the designated multiple access in an optional range defined by the multiple access mode selection range the way.
  • the first or the second possible implementation manner of the fourth aspect in the third possible implementation, the user equipment,
  • An agreed storage module configured to pre-store the multiple access mode selection range, where the multiple access mode selection range is a pre-agreed multiple access mode selection range;
  • a signaling receiving module configured to receive signaling sent by the base station to configure a multiple access mode selection range
  • a storage module configured to store a multiple access mode selection of the signaling configuration received by the signaling receiving module range.
  • the optional multiple access mode in the multiple access mode selection range is Two or three types
  • the user equipment further includes:
  • a determining module configured to determine, at predetermined time intervals, whether the specified multiple access mode currently used by the uplink sending module still meets the predetermined condition
  • a maintenance module configured to maintain the currently used designated multiple access mode unchanged if the judgment result of the determining module is that the currently designated designated multiple access mode still meets the predetermined condition
  • a re-selection module configured to: if the determined result of the determining module is that the currently designated designated multiple access mode has not met the predetermined condition, re-settling the first multiple access mode according to the predetermined condition, A multiple access mode is selected as the designated multiple access mode in the two multiple access mode and the third multiple access mode.
  • the first, the second, the third, or the fourth possible implementation manner of the fourth aspect in the fifth possible implementation, the user equipment,
  • a re-receiving module configured to receive downlink data retransmitted by the base station, where the retransmitted downlink data is that the base station does not receive the user equipment, and adopts a corresponding multiple access mode in the corresponding multiple access mode After receiving the feedback of the downlink data sent by the corresponding time-frequency resource, the multiple-access mode of the at least two multiple access modes is different from the corresponding multiple access mode and is sent to the user equipment.
  • a communication system including any of the various possible implementation manners of the third aspect A base station and a user equipment according to any of the various possible implementations of the fourth aspect.
  • a base station where the base station includes:
  • the receiver is configured to receive uplink data that is sent by the user equipment on a time-frequency resource corresponding to the specified multiple access mode by using a specified multiple access mode, where the specified multiple access mode is determined by the user equipment according to a predetermined condition.
  • a multiple access method selected in at least two multiple access methods
  • the transmitter is configured to send, by using a corresponding multiple access method, downlink data to the user equipment in a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is based on a pre-stored correspondence of the processor. a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes;
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the processor is specifically configured to pre-arrange the corresponding relationship with the user equipment
  • the transmitter is further configured to send a correspondence between the at least two multiple access modes and the time-frequency resource to the user equipment according to a predetermined sending manner;
  • the predetermined sending manner includes: broadcasting a notification by using a system or by signaling.
  • the processor is further configured to generate the at least two multiple access modes and the time-frequency resource according to a predetermined division manner Correspondence between
  • the predetermined division manner includes any one of three manners according to time domain division, frequency domain division, and time-frequency domain division.
  • the base station further includes:
  • a storage unit configured to store a one-to-one correspondence between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes: If the specified multiple access mode is the first multiple access mode, the corresponding multiple access mode is the first multiple access mode;
  • the specified multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • the processor is further configured to query the receiver to receive Corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment last time;
  • the transmitter is further configured to send downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access mode that is queried by the processor.
  • the processor is further used to Receiving, by the receiver, the receiving feedback of the downlink data by the user equipment, controlling the transmitter to re-route the other multiple access manners in the at least two multiple access manners different from the corresponding multiple access manners
  • the user equipment sends downlink data.
  • the predetermined condition includes multiple access a mode selection range
  • the transmitter is further configured to send, to the user equipment, signaling for configuring a multiple access mode selection range, where the multiple access mode selection range is that the user equipment is in the at least two according to a predetermined condition.
  • the optional range when multiple access mode is selected in the multiple access mode.
  • the seventh aspect provides a user equipment, where the user equipment includes:
  • a processor a transmitter, and a receiver
  • the processor is configured to obtain a correspondence between at least two types of multiple access modes and time-frequency resources, and the processor is further configured to select one of the at least two multiple access modes according to a predetermined condition. Address mode as the designated multiple access method;
  • the transmitter is configured to send, by using the specified multiple access mode selected by the processor, uplink data to the base station on a time-frequency resource corresponding to the specified multiple access mode;
  • the receiver is configured to receive downlink data that is sent by the base station in a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is a pre-stored correspondence relationship between the base station Queryed in the at least two multiple access modes associated with the specified multiple access mode a multiple access method;
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the processor is configured to obtain the pre-stored corresponding relationship, where the corresponding relationship is a previously agreed correspondence relationship;
  • the processor is further configured to: control, by the receiver, the corresponding relationship that is sent by the base station according to a predetermined sending manner, where the predetermined sending manner includes: transmitting, by using a system broadcast notification or by signaling.
  • the predetermined condition includes at least one of a QOS priority of a service type, a signal strength, a size of a data block in a service type, and a multiple access mode selection range.
  • the processor is specifically configured to: if the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the designated multiple access mode when a QOS priority of the service type is high;
  • the processor is further configured to: if the predetermined condition includes a signal strength, select the second multiple access mode as the designated multiple access mode when the signal strength is lower than a first preset threshold;
  • the processor is further configured to: if the predetermined condition includes a size of a data block in a service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold, selecting the third multiple address Means as the designated multiple access method;
  • the processor is further configured to: if the predetermined condition includes a multiple access mode selection range, select a multiple access mode as the designated multiple access in an optional range defined by the multiple access mode selection range the way.
  • the memory is configured to pre-store the multiple access mode selection range, where the multiple access mode selection range is a pre-agreed multiple access mode selection range; Or the receiver is further configured to receive, by using the base station, signaling for configuring a multiple access mode selection range, where the memory is further configured to store the signaling configuration received by the receiver. The choice of the address method.
  • the optional multiple access mode in the multiple access mode selection range is Two or three
  • the processor is further configured to determine, at predetermined time intervals, whether the designated multiple access mode currently used by the transmitter still meets the predetermined condition;
  • the processor is further configured to: if the result of the determination is that the currently designated designated multiple access mode still meets the predetermined condition, maintaining the currently used designated multiple access mode remains unchanged;
  • the processor is further configured to: if the judgment result of the determining module is that the currently designated designated multiple access mode has not met the predetermined condition, re-settling according to the predetermined condition in the at least two multiple access modes. Select a multiple access method as the specified multiple access method.
  • the receiver is further configured to receive the The downlink data retransmitted by the base station, where the retransmitted downlink data is sent by the base station to the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access mode by the user equipment. And receiving, by the user equipment, the multiple access manners of the at least two multiple access manners that are different from the corresponding multiple access manners.
  • the eighth aspect provides a communication system, comprising the base station according to any one of the various possible embodiments of the sixth aspect, and the user equipment of any of the various possible embodiments of the seventh aspect.
  • Receiving, by the base station, the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode, and the designated multiple access mode is the one selected by the user equipment in the at least two multiple access modes according to the predetermined condition.
  • Multiple access mode; using the corresponding multiple access method to send downlink data to the user equipment in the time-frequency resource corresponding to the corresponding multiple access mode, and the corresponding multiple access mode is queried in at least two multiple access modes according to the pre-stored correspondence relationship.
  • the multiple access method associated with the specified multiple access method solving the problem that a multiple access method cannot meet the requirements of different user equipments simultaneously in the same communication system; and the same communication system can be provided at the same time
  • the multiple access mode is selected by the user equipment to meet the requirements of different user equipments.
  • FIG. 1 is a flowchart of a method of a communication method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method of a communication method according to another embodiment of the present invention.
  • FIG. 3a is a schematic structural diagram of a correspondence relationship between three multiple access modes and time-frequency resources in a time division manner according to an embodiment of the present invention
  • FIG. 3b is a schematic structural diagram of a correspondence relationship between three multiple access modes and time-frequency resources in a frequency division mode according to an embodiment of the present invention
  • 3c is a schematic structural diagram of a correspondence relationship between three multiple access modes and time-frequency resources in a time-frequency division mode according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method of a communication method according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a communication system according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a communication system according to another embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a communication system according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a communication system according to another embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a communication system according to another embodiment of the present invention. detailed description
  • two or more types of multiple access modes are provided for the user equipment, so that the user equipment can select the multiple access manner that meets the service requirement according to the service requirement, and the following three types of multiple access in the embodiments of the present invention are provided.
  • the first multiple access mode may be an OFDMA (Orthogonal Frequency Division Multiple Access) multiple access method or an SC-FDMA (Single-Carrier Frequency Division Multiple Access) In) Multiple access mode.
  • the OFDMA multiple access method is a multiple access method based on OFDM (Orthogonal Frequency Division Multiple) modulation technology.
  • the OFDM modulation technique divides the channel into a number of orthogonal subchannels, converts the high speed data signals into parallel low speed sub-data streams, and modulates them onto mutually orthogonal sub-channels for transmission.
  • the OFDMA multiple access method divides the transmission bandwidth into orthogonal sets of subcarriers that do not overlap each other, and allocates different subcarrier sets to different user equipments to implement multiple access.
  • the base station and the user equipment transmit communication data through mutually orthogonal subcarriers, ideally, there is no interference between user equipments; and because of the OFDMA system
  • the available bandwidth resources are dynamically allocated to the required user equipment, and the optimal utilization of system resources is realized.
  • the SC-FDMA multiple access method is similar to the OFDMA multiple access method in a large part of the technical, and the related technical details are not described again, but it should be noted that both the SC-FDMA multiple access method and the OFDMA multiple access method have an effective Anti-interference, improve spectrum utilization, and the ability to transmit data at high rates.
  • the second multiple access mode is OFDMA+CDMA (Code Division Multiple Access) multiple access mode or SC-FDMA + CDMA multiple access mode.
  • the OFDMA+CDMA multiple access method is a multiple access system of a combined type of OFDMA and CDMA.
  • Existing multiple access methods of this type include MC-CDMA (Multi Carrier-Code Division Multiple Access) multiple access mode, and LDS-OFDMA (Low Density Signature Orthogonal Frequency Division Multiple Access, low Density orthogonal frequency division multiplexing multiple access (multi-access mode) and the like.
  • CDMA is a communication system based on code division technology and multiple access technology. The system assigns each user equipment a specific address code, and different address codes have mutual orthogonality, so as to be in time, space and frequency. Can overlap.
  • the communication data that the base station needs to transmit with a certain signal bandwidth is modulated by a pseudo-random code whose bandwidth is much larger than the signal bandwidth, so that the signal bandwidth of the original communication data is expanded, and the user equipment receives the modulated transmission sent by the base station.
  • the communication data transmitted by the base station is obtained through the reverse process.
  • the combination of OFDMA and CDMA has the advantages of strong anti-interference and large capacity of traditional CDMA, and has the anti-multipath interference capability of OFDMA.
  • MC-CDMA system in the actual communication process, first copy the original data stream into N-channel parallel data, each channel is multiplied by one bit of the frequency-domain spreading code of length N, and then modulated to transmit to mutually orthogonal sub-carriers, so that the system adopting MC-CDMA multiple access mode has both traditional CDMA anti-adaptation It has the advantages of strong interference and large capacity, and it also has the anti-multipath interference capability of OFDMA.
  • the SC-FDMA+CDMA multiple access method is similar to the OFDMA+CDMA multiple access method in most of the technology. The details of the related art are not described here, but it should be noted that the SC-FDMA+CDMA multiple access method and OFDMA+ The CDMA multiple access method has the advantage of wide coverage.
  • the third multiple access mode is OFDMA+IDMA (Interleaver-Division Multiple Access) multiple access mode or SC-FDMA+IDMA multiple access mode.
  • OFDMA+IDMA Interleaver-Division Multiple Access
  • OFDMA+IDMA is a new multiple access method formed by combining OFDMA and IDMA.
  • the IDMA uses a chip-level interleaver uniquely identified by the user equipment to distinguish the user equipment and the channel. IDMA has better resistance to multiple access interference than traditional CDMA systems.
  • Systems using OFDMA+IDMA multiple access have the advantages of higher spectrum utilization, higher system throughput, and more user equipment.
  • the SC-FDMA+IDMA multiple access method is similar in technology to the OFDMA+IDMA multiple access method. The details of the related art are not described here, but it should be noted that SC-FDMA+IDMA multiple access mode and OFDMA+IDMA
  • the multiple access method has a strong advantage when transmitting a large number of small data packets. Please refer to FIG. 1, which shows a flow chart of a method of communication provided in an embodiment of the present invention. This embodiment is mainly described by using the communication method in a communication system including a base station and a user equipment.
  • the communication method includes:
  • Step 102 The user equipment acquires a correspondence between at least two types of multiple access modes and time-frequency resources.
  • the user equipment acquires a correspondence between at least two multiple access modes and time-frequency resources.
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is an OFDMA multiple access mode or an SC-FDMA multiple access mode;
  • the second multiple access mode is OFDMA+CDMA multiple access mode or SC-FDMA+CDMA multiple access mode;
  • the third multiple access mode is OFDMA+IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • Each multiple access method has different time-frequency resources corresponding to itself.
  • Step 104 The user equipment selects a multiple access mode as the designated multiple access mode in the at least two multiple access manners according to a predetermined condition.
  • the user equipment selects a multiple access mode as the designated multiple access mode in at least two multiple access manners according to a predetermined condition;
  • the predetermined condition may include a QOS priority of the service type, a signal strength, a size of the data block in the service type, and a plurality of At least one of the range options.
  • Step 106 The user equipment adopts the specified multiple access mode to allocate time-frequency resources corresponding to the multiple access mode. Sending uplink data to the base station;
  • the user equipment sends the uplink data to the base station on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode; the designated multiple access mode is one of the at least two multiple access modes selected by the user equipment according to the predetermined condition. Address method.
  • the base station receives, by using the specified multiple access mode, the uplink data sent by the user equipment on the time-frequency resource corresponding to the specified multiple access mode;
  • Step 108 The base station sends the downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access method;
  • the base station uses the corresponding multiple access method to send downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode; the corresponding multiple access mode is that the base station queries in at least two multiple access modes according to the pre-stored correspondence relationship. Specifies a multiple access method associated with multiple access mode.
  • the user equipment receives downlink data that is sent by the base station by using the corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode.
  • the base station receives the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode, and specifies the multiple access mode as the user equipment according to the predetermined condition.
  • FIG. 2 there is shown a flow diagram of a method of communication provided in another embodiment of the present invention. This embodiment is mainly explained by applying the communication method to a communication system including a base station and a user equipment.
  • the communication method includes:
  • Step 201 The base station generates a correspondence between at least two multiple access modes and time-frequency resources according to a predetermined division manner.
  • the base station generates a correspondence between at least two multiple access modes and time-frequency resources according to a predetermined division manner; the predetermined division manner includes any one of three manners according to time domain division, frequency domain division, and time-frequency domain division.
  • the first multiple access mode is an OFDMA multiple access mode or an SC-FDMA multiple access mode; the second multiple access mode is an OFDMA+CDMA multiple access mode or an SC-FDMA+CDMA Multiple access mode;
  • the third multiple access mode is OFDMA+IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • all of the first multiple access mode, the second multiple access mode, and the third multiple access mode are included in at least two multiple access modes, and the first multiple access mode is an OFDMA multiple access mode and a second multiple access mode.
  • the method is an OFDMA+CDMA multiple access mode
  • the third multiple access mode is an OFDMA+IDMA multiple access mode as an example.
  • FIG. 3a, FIG. 3b, and FIG. 3c respectively show that the base station according to the time division, the frequency division, and the time-frequency division are divided into three different manners, and the three multiple access modes and the time-frequency resources are used in the embodiment of the present invention.
  • Figure 3a, Figure 3b, and Figure 3c show the correspondence between the three types of multiple access methods and time-frequency resources in three different ways: time division, frequency division, and time-frequency division. Specifically:
  • the OFDMA+IDMA multiple access mode can be placed in the first time period, the OFDMA multiple access mode can be placed in the second time period, and the OFDMA+CDMA multiple access mode can be placed in the third time period, and sequentially cycled. .
  • the three multiple access modes occupy different frequency bands respectively, and the OFDMA multiple access mode can occupy the higher frequency band; the OFDMA+IDMA multiple access mode can occupy the second highest frequency band; the OFDMA+CDMA multiple access mode can occupy Lower frequency band.
  • the time-frequency division mode in Figure 3c three multiple access modes exist in each frequency band and each time period, for example, in the first time period, OFDMA+CDMA multiple access mode, OFDMA+IDMA multiple access mode And the OFDMA multiple access mode uses different frequency bands respectively; in the second time period, the three multiple access modes also occupy different frequency bands, but compared with the first time period, the frequency band occupied by each multiple access mode can be It can be changed or changed.
  • Step 202 The base station sends a correspondence between at least two multiple access modes and time-frequency resources to the user equipment according to a predetermined sending manner.
  • the base station sends a correspondence between the at least two types of multiple access modes and the time-frequency resources to the user equipment according to the predetermined transmission manner, where the predetermined transmission manner includes: transmitting the notification through the system or by signaling. That is:
  • the base station sends a notification to the user equipment in the system broadcast, where the notification carries a correspondence relationship; the base station sends the notification by transmitting the corresponding relationship between the three multiple access methods and the time-frequency resource in the system broadcast.
  • the way to send to the user device For example, the base station sends the corresponding relationship generated by the predetermined division manner to the user equipment by sending a notification in the system broadcast. If the predetermined manner is divided according to the frequency domain, the notification sent by the base station in the system broadcast includes the manner shown in FIG. 3b.
  • OFDMA multiple access mode occupies a higher frequency band
  • OFDMA+IDMA multiple access mode occupies the second highest frequency band
  • OFDMA+CDMA multiple access mode occupies a lower frequency band.
  • the base station sends signaling to the user equipment, where the signaling carries a corresponding relationship
  • the base station sends the corresponding relationship between the three multiple access modes and the time-frequency resources to the user equipment by sending signaling. For example, the base station sends the corresponding relationship generated in the predetermined manner to the user equipment by sending a notification in the system broadcast. If the predetermined manner is divided according to the time-frequency domain, the signaling sent by the base station includes the three shown in FIG. 3c.
  • Correspondence between multiple access modes and time-frequency resources In the first time period, OFDMA+CDMA multiple access mode, OFDMA+IDMA multiple access mode and OFDMA multiple access mode respectively use different frequency bands; The three multiple access modes also occupy different frequency bands, but the frequency bands occupied by each multiple access mode may be unchanged or may be changed compared with the first time period.
  • Step 203 The user equipment acquires a correspondence between at least two types of multiple access modes and time-frequency resources. After the base station sends the correspondence between the at least two multiple access modes and the time-frequency resources to the user equipment according to the predetermined sending manner, the user equipment The corresponding relationship sent by the base station according to the predetermined sending manner may be received, where the predetermined sending manner includes: transmitting, by using a system broadcast notification or by signaling. The user device can then store the correspondence.
  • the corresponding relationship between the at least two types of multiple access modes and the time-frequency resources of the user equipment is not limited to the corresponding relationship sent by the receiving base station.
  • the user equipment may pre-store the correspondence between the at least two types of multiple access modes and the time-frequency resources in a scenario where the correspondence between the at least two types of multiple access modes and the time-frequency resources is agreed in advance; and then, when needed, the pre-acquisition is obtained.
  • Corresponding relationship stored, the corresponding relationship is a previously agreed correspondence.
  • Step 204 The user equipment selects a multiple access mode as the designated multiple access mode in the at least two multiple access modes according to a predetermined condition.
  • the OFDMA multiple access method has the advantage of high rate; the OFDMA+CDMA multiple access method has the advantage of wide coverage; the OFDMA+IDMA multiple access method has the advantage of transmitting a large number of small data packets.
  • the user equipment may select the most suitable multiple access mode according to a predetermined condition, and the predetermined condition may include at least one of a QOS priority of the service type, a signal strength, a size of the data block in the service type, and a multiple access mode selection range.
  • the predetermined condition may include at least one of a QOS priority of the service type, a signal strength, a size of the data block in the service type, and a multiple access mode selection range.
  • the predetermined condition may include at least one of a QOS priority of the service type, a signal strength, a size of the data block in the service type, and a multiple access mode selection range.
  • the predetermined condition may include at least one of a QOS priority of the service type, a signal strength, a
  • the first multiple access mode is selected. For example, if the predetermined condition includes the QOS priority of the service type, when the QOS (Quality of Service) priority of the service type is high. Select the first multiple access method as the specified multiple access method.
  • the second multiple access mode is selected. For example, if the predetermined condition includes the signal strength, when the signal strength is lower than the first preset threshold, the second multiple access mode is selected as the designated multiple. Address method.
  • the third multiple access mode is selected. For example, if the predetermined condition includes the size of the data block in the service type, when the data block size transmitted in the service type is smaller than the fourth preset threshold. , Select the third multiple access method as the specified multiple access method.
  • the user equipment selects a multiple access mode as the designated multiple access mode within the multiple access mode selection range. For example, if the multiple access mode of the user equipment is in the first multiple access mode and the second multiple access mode, the user equipment can only select one multiple access in the first multiple access mode and the second multiple access mode. The mode is specified as the multiple access mode, and the third multiple access mode is not selected as the designated multiple access mode.
  • Step 205 The user equipment sends the uplink data to the base station by using the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode.
  • the user equipment sends the uplink data to the base station on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode. Specifically, after selecting the specified multiple access mode, the user equipment may query the time-frequency resource corresponding to the specified multiple access mode according to the obtained correspondence between the at least two multiple access modes and the time-frequency resource, and then specify The uplink data is transmitted to the base station on the time-frequency resource corresponding to the multiple access mode.
  • the base station receives the uplink data sent by the user equipment on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode.
  • Step 206 The base station stores a corresponding relationship between the specified multiple access mode and the corresponding multiple access mode.
  • the user equipment uses the multiple access mode to send uplink data to the base station, and when the base station receives the uplink data, The downlink data is also sent to the user equipment by using the multiple access method.
  • the device complexity required by the IDMA in the third multiple access mode is relatively high, so the user is
  • the base station generally uses the first or second multiple access mode to send downlink data to the user equipment.
  • the base station receives the user.
  • the downlink data is sent to the user equipment according to the corresponding relationship in a multiple access manner associated with the multiple access mode in which the user equipment sends the uplink data. Therefore, before the base station sends the downlink data to the user equipment, the base station needs to pre-store a one-to-one correspondence between the specified multiple access mode and the corresponding multiple access mode.
  • the one-to-one correspondence includes: if the multiple access mode is the first multiple access mode, the corresponding multiple access mode is the first multiple access mode; if the multiple access mode is the second multiple access mode, the corresponding multiple access mode is The second multiple access mode; if the multiple access mode is the third multiple access mode, the corresponding multiple access mode is any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • Step 207 The base station sends the downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access method.
  • the base station After receiving the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode, the base station uses the corresponding multiple access mode associated with the specified multiple access mode in the corresponding multiple access mode.
  • the downlink data is sent to the user equipment on the time-frequency resource, where the corresponding multiple access mode is a multiple access mode that is associated with the designated multiple access mode that is queried by the base station in the at least two multiple access modes according to the pre-stored correspondence.
  • the user equipment receives the downlink data sent by the base station in the corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode.
  • the communication method provided in this embodiment acquires the correspondence between at least two types of multiple access modes and time-frequency resources by using the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment by using the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station pre-stores the corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, so that after receiving the uplink data sent by the user equipment, the base station can adopt and specify the multiple access according to the pre-stored corresponding relationship.
  • the corresponding multiple access mode associated with the method sends downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, and solves the problem that the base station sends the downlink data in a manner that the user equipment cannot identify, causing the communication to be interrupted, and the problem is reached. Under the premise of significantly increasing the complexity of the device of the user equipment, the communication process is guaranteed to be smooth.
  • FIG. 4 shows a flow chart of a method of communication provided in another embodiment of the present invention. This embodiment mainly applies the communication method to a communication system including a base station and a user equipment. Example description.
  • the communication method includes:
  • Step 401 The base station sends signaling for configuring the multiple access mode selection range to the user equipment.
  • the base station does not need to provide two to three optional multiple access modes to each user equipment. Because some user equipment only needs to use one kind of multiple access method to send and receive data, for example, user equipment located in the basement or mine may not need to transmit data at high rate from beginning to end, nor need to transmit a large number of small data packets. The coverage needs to be guaranteed. In this case, the user equipment only needs to always use the OFDMA multiple access method. However, some user equipments need to use multiple multiple access methods to send and receive data, for example, user equipment with various types of services and often moving to different regions for use. At this time, the user equipment can perform the optimal multi-access mode and the base station to perform information interaction according to the needs and the multiple access manner that the base station can provide.
  • the base station needs to send signaling to the user equipment for configuring the multiple access mode selection range;
  • the multiple access mode selection range is when the user equipment selects the multiple access mode in the at least two multiple access modes.
  • Optional range For example, in the communication system, only one user equipment is allowed to communicate with the base station by using the first multiple access mode and the second multiple access mode, or the configuration of the user equipment only supports the first multiple access mode and the second multiple access mode, then Before the base station and the user equipment communicate, the base station sends signaling to the user equipment to configure a multiple access mode selection range, where the signaling is used to notify the user equipment that the multiple access mode range is the first multiple access mode or the second Multiple access method.
  • the first multiple access mode is an OFDMA multiple access mode or an SC-FDMA multiple access mode
  • the second multiple access mode is an OFDMA+CDMA multiple access mode or an SC-FDMA+CDMA multiple access mode
  • the third multiple access mode is an OFDMA+ IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the first multiple access mode is the OFDMA multiple access mode
  • the second multiple access mode is the OFDMA+CDMA multiple access mode
  • the third multiple access mode is the OFDMA+IDMA multiple access mode.
  • the user equipment receives the signaling sent by the base station for configuring the multiple access mode selection range.
  • Step 402 The user equipment stores a multiple access mode selection range of the signaling configuration.
  • the user equipment After receiving the signaling sent by the base station for configuring the multiple access mode selection range, the user equipment selects a multiple access mode selection range in the signaling configuration sent by the base station.
  • the multiple access mode selection range may also be agreed in advance.
  • the user equipment pre-stores the multiple access mode selection range, and the multiple access mode selection range is a pre-agreed multiple access mode selection range.
  • Step 403 The base station generates, between the at least two multiple access modes and the time-frequency resource, according to a predetermined division manner. Correspondence relationship;
  • the base station generates a correspondence between at least two multiple access modes and time-frequency resources according to a predetermined division manner; the predetermined division manner includes any one of three manners according to time domain division, frequency domain division, and time-frequency domain division. .
  • FIG. 3a, FIG. 3b, and FIG. 3c illustrate three different modes of multiple base stations and time-frequency resources according to time division, frequency division and time-frequency division modes in the embodiment of the present invention.
  • Figure 3a, Figure 3b, and Figure 3c show the correspondence between the three types of multiple access methods and time-frequency resources in three different modes of time division, frequency division, and time-frequency division. Correspondence relationship.
  • Step 404 The base station sends a correspondence between at least two multiple access modes and time-frequency resources to the user equipment according to a predetermined sending manner.
  • the base station sends a correspondence between the at least two types of multiple access modes and the time-frequency resources to the user equipment according to the predetermined transmission manner, where the predetermined transmission manner includes: transmitting the notification through the system or by signaling.
  • Step 405 The user equipment acquires a correspondence between at least two types of multiple access modes and time-frequency resources. After the base station sends a correspondence between at least two multiple access modes and time-frequency resources to the user equipment according to a predetermined sending manner, the user equipment The corresponding relationship sent by the base station according to the predetermined sending manner may be received, where the predetermined sending manner includes: transmitting, by using a system broadcast notification or by signaling. The user device can then store the correspondence.
  • the corresponding relationship between the at least two types of multiple access modes and the time-frequency resources of the user equipment is not limited to the corresponding relationship sent by the receiving base station.
  • the user equipment may pre-store the correspondence between the at least two types of multiple access modes and the time-frequency resources in a scenario where the correspondence between the at least two types of multiple access modes and the time-frequency resources is agreed in advance; and then, when needed, the pre-acquisition is obtained.
  • Corresponding relationship stored, the corresponding relationship is a previously agreed correspondence.
  • Step 406 The user equipment selects a multiple access mode as the designated multiple access mode in the at least two multiple access modes according to the predetermined condition.
  • the OFDMA multiple access method has the advantage of high rate; the OFDMA+CDMA multiple access method has the advantage of wide coverage; the OFDMA+IDMA multiple access method has the advantage of transmitting a large number of small data packets.
  • the user equipment can select the most appropriate multiple access method based on predetermined conditions. Specifically:
  • the first multiple access mode is selected, for example, if the predetermined strip
  • the component includes the QOS priority of the service type, and the first multiple access mode is selected as the designated multiple access mode when the priority of the QOS (Quality of Service) of the service type is high.
  • QOS Quality of Service
  • the second multiple access mode is selected. For example, if the predetermined condition includes the signal strength, when the signal strength is lower than the first preset threshold, the second multiple access mode is selected as the designated multiple. Address method.
  • the third multiple access mode is selected. For example, if the predetermined condition includes the size of the data block in the service type, when the data block size transmitted in the service type is smaller than the fourth preset threshold. , Select the third multiple access method as the specified multiple access method.
  • the predetermined condition includes a multiple access mode selection range, and the user equipment can only select one multiple access mode as the designated multiple access mode within the multiple access mode selection range.
  • Step 407 The user equipment sends the uplink data to the base station by using the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode.
  • the user equipment sends the uplink data to the base station on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode.
  • the base station receives the uplink data sent by the user equipment on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode.
  • Step 408 The base station queries a corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment last time;
  • the multiple access mode in which the user equipment sends the uplink data to the base station does not change. However, if the environment in which the user equipment is located changes or the requirements of the communication system change, the user equipment sends the data to the base station during the communication.
  • the multiple access mode of the uplink data is sent, and then the base station receives the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode, and queries the designated multiple access that is used last time with the user equipment.
  • the corresponding multiple access method corresponding to the mode For example, if the specified multiple access mode used by the user equipment is the first multiple access mode, the corresponding multiple access mode that the base station queries is the first multiple access mode.
  • the base station may store a corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship may include: if the multiple access mode is specified as the first multiple access mode, the corresponding multiple access mode is The first multiple access mode; if the multiple access mode is the second multiple access mode, the corresponding multiple access mode is the second multiple access mode; if the multiple access mode is specified as the third multiple access mode, the corresponding multiple access mode is the first Any one of a multiple access mode, a second multiple access mode, and a third multiple access mode.
  • Step 409 The base station uses the corresponding multiple access mode that is queried to correspond to the time frequency corresponding to the multiple access mode. Sending downlink data to the user equipment on the resource;
  • the base station After receiving the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode, the base station queries the corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment last time, The downlink data is sent to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access mode corresponding to the specified multiple access mode. For example, if the specified multiple access mode used by the user equipment is the first multiple access mode, the corresponding multiple access mode queried by the base station is the first multiple access mode, and the base station adopts the first type of multiple access queried. The method sends downlink data to the user equipment on the time-frequency resource corresponding to the first multiple access mode.
  • the user equipment receives the downlink data sent by the base station in the corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode.
  • Step 410 The user equipment sends a receiving feedback to the base station after receiving the downlink data sent by the base station.
  • the user equipment After receiving the downlink data sent by the base station, the user equipment sends the receiving feedback to the base station.
  • the receiving feedback is used to identify that the user equipment has received the downlink data sent by the base station.
  • the base station receives the receiving feedback sent by the user equipment.
  • Step 411 If the base station does not receive the receiving feedback of the downlink data by the user equipment, retransmit the downlink data to the user equipment by using another multiple access manner that is different from the corresponding multiple access manner in the at least two multiple access manners;
  • the base station When the communication is normal, the base station sends the downlink data to the user equipment, and then receives the receiving feedback sent by the user equipment. If the base station does not receive the receiving feedback from the user equipment for the downlink data, the user equipment does not receive the downlink sent by the base station.
  • the base station retransmits the downlink data to the user equipment by using the multiple access method in the first multiple access mode, the second multiple access mode, and the third multiple access mode, which is different from the corresponding multiple access mode; for example, if the corresponding multiple access mode In the first multiple access mode, if the base station does not receive the receiving feedback of the downlink data by the user equipment, the second multiple access mode is used to retransmit the downlink data to the user equipment on the time-frequency resource corresponding to the second multiple access mode. If the user equipment does not receive the feedback of the downlink data, the third multiple access mode is used to retransmit the downlink data to the user equipment on the time-frequency resource corresponding to the third multiple access mode; Receive feedback for data.
  • Step 412 The user equipment determines, at predetermined time intervals, whether the currently designated designated multiple access mode still meets the predetermined condition
  • the user equipment may be in a mobile state, the environment may be different at regular intervals, or a factor hindering communication occurs during communication of the user equipment, so that the predetermined clause is no longer satisfied.
  • the user equipment determines whether the currently designated designated multiple access method still meets the predetermined condition every predetermined time interval.
  • Step 403 If the result of the determination is that the currently designated designated multiple access mode has not met the predetermined condition, then the multiple access mode is selected as the designated multiple access mode in the at least two multiple access modes according to the predetermined condition.
  • the communication method provided in this embodiment acquires the correspondence between at least two types of multiple access modes and time-frequency resources by using the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment by using the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station pre-stores the corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, so that after receiving the uplink data sent by the user equipment, the base station can adopt and specify the multiple access according to the pre-stored corresponding relationship.
  • the corresponding multiple access mode associated with the method sends downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, and solves the problem that the base station sends the downlink data in a manner that the user equipment cannot identify, causing the communication to be interrupted, and the problem is reached. Under the premise of significantly increasing the complexity of the device of the user equipment, the communication process is guaranteed to be smooth.
  • FIG. 5 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the communication system includes: a base station 510 and a user equipment 550.
  • the base station 510 includes: an uplink receiving module 512 and a downlink sending module 514.
  • the uplink receiving module 512 receives uplink data that is sent by the user equipment on the time-frequency resource corresponding to the specified multiple access mode by using the specified multiple access mode, where the specified multiple access mode is that the user equipment is at least according to a predetermined condition.
  • the downlink sending module 514 is configured to send downlink data to the user equipment in a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is based on a pre-stored correspondence relationship. a multiple access mode associated with the specified multiple access mode received by the uplink receiving module 512, which is queried in the at least two multiple access modes;
  • the user equipment 550 includes: a relationship obtaining module 552, a mode selecting module 554, an uplink sending module 556, and a downlink receiving module 558.
  • the relationship obtaining module 552 is configured to obtain a correspondence between at least two multiple access modes and time-frequency resources.
  • the mode selection module 554 is configured to select a multiple access mode as the designated multiple access mode in the at least two multiple access modes acquired by the relationship obtaining module 554 according to a predetermined condition.
  • the uplink sending module 556 is configured to send uplink data to the base station by using the specified multiple access mode selected by the mode selection module 554 on the time-frequency resource corresponding to the specified multiple access mode.
  • the downlink receiving module 558 is configured to receive downlink data that is sent by the base station by using a corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is that the base station is pre-stored according to the foregoing Corresponding relationship is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the communication system receives the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode by using the base station, and specifies the multiple access mode as the user equipment according to the predetermined condition.
  • FIG. 6 shows a schematic structural diagram of a communication system provided in another embodiment of the present invention.
  • the communication system includes: a base station 610 and a user equipment 650.
  • the base station 610 includes: a relationship generation module 611, a relationship sending module 612, an uplink receiving module 613, a storage relationship module 614, and a downlink sending module 615.
  • the relationship generation module 611 is configured to generate a correspondence between the at least two multiple access modes and the time-frequency resource according to a predetermined division manner, where the predetermined division manner includes dividing according to a time domain and according to a frequency domain. Dividing and dividing according to the time-frequency domain into any of three ways.
  • the first multiple access mode is an OFDMA multiple access mode or an SC-FDMA multiple access mode;
  • the second multiple access mode is an OFDMA+CDMA multiple access mode or an SC-FDMA+CDMA multiple access mode;
  • the multiple access mode is OFDMA+IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the relationship sending module 612 is configured to send, according to a predetermined sending manner, a correspondence between the at least two multiple access modes generated by the relationship generating module 611 and the time-frequency resource to the user equipment, where the predetermined
  • the sending method includes: broadcasting notification through the system or signaling.
  • the uplink receiving module 613 is configured to receive uplink data that is sent by the user equipment in a specified multiple access manner on a time-frequency resource corresponding to the specified multiple access mode, where the specified multiple access mode is the user equipment according to the
  • the predetermined condition is a multiple access mode selected in the at least two multiple access modes.
  • the storage relationship module 614 is configured to store a corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes:
  • the corresponding multiple access mode is the first multiple access mode
  • the specified multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is the second multiple access mode
  • the corresponding multiple access mode is any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • the downlink sending module 615 is configured to send, by using the corresponding multiple access mode, downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access manner is based on pre-stored Corresponding relationship is a multiple access mode that is queried in the at least two multiple access modes and is associated with the specified multiple access mode received by the uplink receiving module 613.
  • the user equipment 650 includes: a relationship obtaining module 652, a mode selecting module 654, an uplink sending module 656, and a downlink receiving module 658.
  • the relationship obtaining module 652 is configured to acquire a pair between at least two multiple access modes and time-frequency resources. Should be related.
  • the mode selection module 654 is configured to select a multiple access mode as the designated multiple access mode in the first multiple access mode, the second multiple access mode, and the third multiple access mode according to a predetermined condition.
  • the predetermined condition includes one or a combination of one of a service type QoS priority, a signal strength, a size of a data block in a service type, and a multiple access mode selection range.
  • the mode selection module 654 specifically includes: at least one of a first selection unit 654a, a second selection unit 654b, a third selection unit 654c, and a fourth selection unit 654d.
  • the first selecting unit 654a is configured to: if the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the designated multiple access when a QOS priority of the service type is high the way;
  • the second selecting unit 654b is configured to: if the predetermined condition includes a signal strength, select the second multiple access mode as the designated multiple access mode when the signal strength is lower than a first preset threshold;
  • the third selecting unit 654c is configured to: if the predetermined condition includes a size of a data block in a service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold, select the third multiple Address mode as the specified multiple access method;
  • the fourth selecting unit 654d is configured to: if the predetermined condition includes a multiple access mode selection range, select a multiple access mode as the specified multiple among the selectable ranges defined by the multiple access mode selection range Address method.
  • the uplink sending module 656 is configured to send uplink data to the base station by using the specified multiple access mode selected by the mode selection module 654 on the time-frequency resource corresponding to the specified multiple access mode.
  • the downlink receiving module 658 is configured to receive downlink data that is sent by the base station by using a corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is that the base station is pre-stored according to the foregoing Corresponding relationship is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the communication system acquires the correspondence between at least two types of multiple access modes and time-frequency resources through the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment in the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station can adopt the time-frequency resource corresponding to the corresponding multiple access mode in the corresponding multiple access mode associated with the specified multiple access mode according to the pre-stored corresponding relationship.
  • the downlink data is sent to the user equipment, which solves the problem that the base station sends the downlink data in a manner that the user equipment cannot identify, which causes the communication to be interrupted, and achieves the effect of ensuring the smooth communication process without significantly increasing the complexity of the equipment of the user equipment.
  • FIG. 7, shows a schematic structural diagram of a communication system provided in another embodiment of the present invention.
  • the communication system includes: a base station 710 and a user equipment 750.
  • the base station 710 includes: a signaling sending module 711, a relationship generating module 712, a relationship sending module 713, an uplink receiving module 714, a storage relationship module 715, a downlink sending module 716, a feedback receiving module 717, and a retransmission module 718.
  • the signaling sending module 711 is configured to send, to the user equipment, signaling for configuring a multiple access mode selection range, where the multiple access mode selection range is that the user equipment is in the at least two multiple access manners according to a predetermined condition. Optional range when selecting multiple access mode.
  • the at least two multiple access modes include any two or all three of the first multiple access mode, the second multiple access mode, and the third multiple access mode, and the first multiple access mode is orthogonal frequency division multiplexing.
  • the relationship generating module 712 is configured to generate a correspondence between the at least two multiple access modes and the time-frequency resource according to a predetermined division manner, where the predetermined division manner includes dividing according to a time domain according to a frequency domain. Dividing and dividing according to the time-frequency domain into any of three ways.
  • the relationship sending module 713 is configured to send, according to a predetermined sending manner, a correspondence between the at least two multiple access modes and the time-frequency resource to the user equipment, where the predetermined sending manner includes: Broadcast notifications or by signaling.
  • the uplink receiving module 714 is configured to receive uplink data that is sent by the user equipment in a specified multiple access manner on a time-frequency resource corresponding to the specified multiple access mode, where the specified multiple access mode is the user equipment according to the
  • the predetermined condition is a multiple access mode selected in the at least two multiple access modes.
  • the storage relationship module 715 is configured to store a corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes: if the specified multiple access mode is the In the first multiple access mode, the corresponding multiple access mode is the first multiple access mode; In the second multiple access mode, the corresponding multiple access mode is the second multiple access mode; if the designated multiple access mode is the third multiple access mode, the corresponding multiple access mode is Any one of the first multiple access mode, the second multiple access mode, and the third multiple access mode.
  • the downlink sending module 716 is configured to send, by using the corresponding multiple access mode, downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is according to the storing
  • the correspondence relationship pre-stored by the relationship module 715 is a multiple access mode associated with the specified multiple access mode received by the uplink receiving module 714, which is queried in the at least two multiple access modes.
  • the downlink sending module 716 specifically includes: a query unit 716a and a sending unit 716b.
  • the query unit 716a is configured to query a corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment last time;
  • the sending unit 716b is configured to send downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode by using the corresponding multiple access manner that is queried by the query unit 716a.
  • the feedback receiving module 718 is configured to receive the receiving feedback sent by the user equipment.
  • the retransmission module 718 is configured to: if the feedback receiving module 717 does not receive the receiving feedback of the downlink data by the user equipment, use the at least two multiple access modes and the corresponding multiple access manner The time-frequency resources corresponding to different other multiple access modes retransmit the downlink data to the user equipment.
  • the user equipment 750 includes: an appointment storage module 751, a signaling receiving module 752, a storage module 753, a relationship obtaining module 754, a mode selection module 755, an uplink sending module 756, a downlink receiving module 757, and a feedback sending module 758.
  • the agreement storage module 751 is configured to pre-store the multiple access mode selection range agreed in advance.
  • the signaling receiving module 752 is configured to receive signaling sent by the base station to configure a multiple access mode selection range.
  • the storage module 753 is configured to store a multiple access mode selection range configured by the signaling sent by the base station and received by the signaling receiving module 752. It should be noted that, when the user equipment 750 includes the predetermined storage module 751, the signaling receiving module 752 and the storage module 753 may not be included; when the user equipment 750 includes the signaling receiving module 752 and the storage module 753, the user equipment 750 may not include The storage module 751 is reserved.
  • the relationship obtaining module 754 is configured to acquire a pair between at least two multiple access modes and time-frequency resources. Should be related.
  • the relationship obtaining module 754 specifically includes:
  • the agreement obtaining unit 754a is configured to obtain the pre-stored correspondence, where the correspondence is a pre-agreed correspondence
  • the relationship receiving unit 754b is configured to receive the corresponding relationship that is sent by the base station according to a predetermined sending manner, where the predetermined sending manner includes: notifying by a system broadcast notification or by signaling.
  • the mode selection module 755 is configured to select a multiple access mode as the designated multiple access mode in the at least two multiple access modes acquired by the relationship obtaining module 754 according to a predetermined condition.
  • the predetermined condition includes at least one of a QOS priority of a service type, a signal strength, a size of a data block in a service type, and a multiple access mode selection range.
  • the mode selection module 755 specifically includes:
  • the first selecting unit 755a is configured to: if the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the designated multiple access when a QOS priority of the service type is high the way;
  • the second selecting unit 755b is configured to: when the predetermined condition includes a signal strength, select the second multiple access mode as the designated multiple access mode when the signal strength is lower than a first preset threshold;
  • the third selecting unit 755c is configured to: if the predetermined condition includes a size of a data block in a service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold, select the third multiple Address mode as the specified multiple access method;
  • the fourth selecting unit 755d is configured to select, in the optional range defined by the multiple access mode selection range stored in the appointment storage module 751 or the storage module 753, if the predetermined condition includes a multiple access mode selection range A multiple access method is used as the designated multiple access method.
  • the uplink sending module 756 is configured to send, by using the specified multiple access mode selected by the mode selection module 755, uplink data to the base station on the time-frequency resource corresponding to the specified multiple access mode.
  • the downlink receiving module 757 is configured to receive downlink data that is sent by the base station by using the corresponding multiple access mode on the time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is
  • the pre-stored correspondence is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the feedback sending module 758 is configured to receive downlink data in the downlink receiving module 757. The receiving feedback is sent to the base station.
  • the retransmission module 759 is configured to receive downlink data that is retransmitted by the base station, where the retransmitted downlink data is that the base station does not receive the user equipment, and the using the corresponding multiple access mode is After the receiving feedback of the downlink data sent on the time-frequency resource corresponding to the corresponding multiple access mode, the user equipment is re-introduced to the user equipment by using another multiple access mode different from the corresponding multiple access mode in the at least two multiple access modes. Sent.
  • the determining module 760 is configured to determine, at predetermined time intervals, whether the currently designated designated multiple access method still meets the predetermined condition.
  • the maintaining module 761 is configured to maintain the currently used designated multiple access mode unchanged if the determining result of the determining module 760 is that the currently designated designated multiple access mode still meets the predetermined condition.
  • the reselection module 762 is configured to: if the judgment result of the determining module 760 is that the currently designated designated multiple access mode has not met the predetermined condition, re-review the at least two multiple addresses according to the predetermined condition. In the mode, a multiple access mode is selected as the designated multiple access mode.
  • the communication system acquires the correspondence between at least two types of multiple access modes and time-frequency resources through the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment in the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station pre-stores the corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, so that after receiving the uplink data sent by the user equipment, the base station can adopt and specify the multiple access according to the pre-stored corresponding relationship.
  • the corresponding multiple access mode associated with the method sends downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, and solves the problem that the base station sends the downlink data in a manner that the user equipment cannot identify, causing the communication to be interrupted, and the problem is reached. Under the premise of significantly increasing the complexity of the device of the user equipment, the communication process is guaranteed to be smooth.
  • FIG. 8 is a block diagram showing the structure of a communication system provided in an embodiment of the present invention.
  • the communication system includes: a base station 810 and a user equipment 850.
  • the base station 810 includes: a processor 811, a receiver 812, and a transmitter 813.
  • the receiver 812 is configured to receive uplink data that is sent by the user equipment on a time-frequency resource corresponding to the specified multiple access mode by using a specified multiple access mode, where the specified multiple access mode is reserved for the user equipment.
  • the transmitter 813 is configured to send, by using a corresponding multiple access method, downlink data to the user equipment in a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is that the processor 811 is pre-stored according to the foregoing Corresponding relationship is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes;
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode; the second multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode; The third multiple access mode is OFDMA+interleaved multiple access IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the user equipment 850 includes: a processor 851, a transmitter 852, and a receiver 853.
  • the processor 851 is configured to obtain a correspondence between at least two types of multiple access modes and time-frequency resources.
  • the processor 851 is further configured to select one of the at least two multiple access modes according to a predetermined condition. Multiple access method as the designated multiple access method;
  • the transmitter 852 is configured to send uplink data to the base station by using the specified multiple access mode selected by the processor 851 on the time-frequency resource corresponding to the specified multiple access mode;
  • the receiver 853 is configured to receive downlink data that is sent by the base station in a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is a preset corresponding to the base station according to the pre-stored A multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the communication system receives the uplink data sent by the user equipment in the specified multiple access mode on the time-frequency resource corresponding to the specified multiple access mode by using the base station, and specifies the multiple access mode as the user equipment according to the predetermined condition.
  • a multiple access mode selected in at least two multiple access modes is used to send downlink data to the user equipment in the time-frequency resource corresponding to the corresponding multiple access mode, and the corresponding multiple access mode is based on the pre-stored corresponding A multiple access mode associated with the specified multiple access mode queried in at least two multiple access modes; solving the problem that a multiple access mode cannot meet the requirements of different user equipments simultaneously in the same communication system Problem; reached in the same communication system can At the same time, a variety of multiple access methods are provided for user equipment selection, which can meet the requirements of different user equipment requirements.
  • the communication system includes: a base station 910 and a user equipment 950.
  • the base station 910 includes a processor 911, a receiver 912, a memory 913, and a transmitter 914.
  • the processor 911 is configured to generate a correspondence between the at least two multiple access modes and the time-frequency resource according to a predetermined division manner, where the predetermined division manner includes dividing according to a time domain and dividing according to a frequency domain. And according to the time-frequency domain, any one of three ways.
  • the at least two multiple access modes include at least two of a first multiple access mode, a second multiple access mode, and a third multiple access mode, where the first multiple access mode is orthogonal frequency division multiplexing multiple access.
  • OFDMA multiple access mode or single carrier frequency division multiple access SC-FDMA multiple access mode is OFDMA+ code division multiple access CDMA multiple access mode or SC-FDMA + CDMA multiple access mode
  • the third multiple access mode is an OFDMA+interleaved multiple access IDMA multiple access mode or an SC-FDMA+IDMA multiple access mode.
  • the transmitter is further configured to send, according to a predetermined sending manner, a correspondence between the at least two multiple access modes and the time-frequency resource to the user equipment, where the predetermined sending manner includes: Notification or notification by signal.
  • the receiver 912 is configured to receive uplink data that is sent by the user equipment on a time-frequency resource corresponding to the specified multiple access mode by using a specified multiple access mode, where the specified multiple access mode is reserved for the user equipment.
  • a multiple access method selected by at least two multiple access methods.
  • the memory 913 is configured to store a one-to-one correspondence between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes: if the designated multiple access mode is the first In the multiple access mode, the corresponding multiple access mode is the first multiple access mode; if the designated multiple access mode is the second multiple access mode, the corresponding multiple access mode is the second multiple access mode If the specified multiple access mode is the third multiple access mode, the corresponding multiple access mode is the first multiple access mode, the second multiple access mode, and the third multiple access mode. Any of them.
  • the transmitter 914 is configured to send, by using a corresponding multiple access mode, downlink data to the user equipment in a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is that the processor is configured according to the memory.
  • 913 pre-stored correspondence is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the user equipment 950 includes: a processor 951, a transmitter 952, and a receiver 953.
  • the processor 951 is configured to obtain a correspondence between at least two multiple access modes and time-frequency resources.
  • the processor 951 is further configured to select one of the at least two multiple access modes as the designated multiple access mode according to a predetermined condition.
  • the processor 951 is specifically configured to: when the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the foregoing when the QOS priority of the service type is high. Specifying a multiple access mode; the processor 951 is further configured to: if the predetermined condition includes a signal strength, when the signal strength is lower than a first preset threshold, select the second multiple access mode as the The processor 951 is further configured to: if the predetermined condition includes a size of a data block in the service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold, The third multiple access mode is used as the designated multiple access mode; the processor 951 is further configured to: if the predetermined condition includes a multiple access mode selection range, where the multiple access mode selection range is limited A multiple access mode is selected as the designated multiple access mode in the selected range.
  • the transmitter 952 is configured to send uplink data to the base station by using the specified multiple access mode selected by the processor 951 on the time-frequency resource corresponding to the specified multiple access mode.
  • the receiver 953 is configured to receive downlink data that is sent by the base station on a time-frequency resource corresponding to the corresponding multiple access mode by using a corresponding multiple access mode, where the corresponding multiple access mode is pre-stored by the base station according to the Corresponding relationship is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the communication system acquires the correspondence between at least two types of multiple access modes and time-frequency resources through the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment in the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station pre-stores the corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, so that after receiving the uplink data sent by the user equipment, the base station can adopt and specify the multiple access according to the pre-stored corresponding relationship.
  • the corresponding multiple access mode associated with the method sends downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, and solves the problem that the base station sends the downlink data in a manner that the user equipment cannot identify, causing the communication to be interrupted, and the problem is reached. Under the premise of significantly increasing the complexity of the device of the user equipment, the communication process is guaranteed to be smooth.
  • FIG. 10 shows a structural block of a communication system provided in another embodiment of the present invention.
  • the communication system includes: a base station 1010 and a user equipment 1050.
  • the base station 1010 includes: a transmitter 1011, a processor 1012, a receiver 1013, and a memory 1014.
  • the transmitter 1011 is configured to send, to the user equipment, signaling for configuring a multiple access mode selection range, where the multiple access mode selection range is that the user equipment is in the at least two multiple access manners according to a predetermined condition.
  • Optional range when selecting multiple access mode is an OFDMA multiple access mode or an SC-FDMA multiple access mode;
  • the second multiple access mode is an OFDMA+CDMA multiple access mode or an SC-FDMA+CDMA multiple access mode;
  • the multiple access mode is OFDMA+IDMA multiple access mode or SC-FDMA+IDMA multiple access mode.
  • the processor 1012 is further configured to generate a correspondence between the at least two multiple access modes and the time-frequency resource according to a predetermined division manner, where the predetermined division manner includes dividing according to a time domain according to a frequency domain. Dividing and dividing according to the time-frequency domain into any of three ways.
  • the transmitter 1011 is further configured to send, according to a predetermined sending manner, a correspondence between the at least two multiple access modes and the time-frequency resource to the user equipment, where the predetermined sending manner includes: Notification or notification by signal.
  • the receiver 1013 is configured to receive uplink data that is sent by the user equipment in a specified multiple access manner on a time-frequency resource corresponding to the specified multiple access mode, where the specified multiple access mode is determined by the user equipment according to the predetermined A multiple access mode selected by the at least two multiple access methods.
  • the memory 1014 is configured to store a one-to-one correspondence between the specified multiple access mode and the corresponding multiple access mode, where the corresponding relationship includes: if the designated multiple access mode is the first In the multiple access mode, the corresponding multiple access mode is the first multiple access mode; if the designated multiple access mode is the second multiple access mode, the corresponding multiple access mode is the second multiple access mode If the specified multiple access mode is the third multiple access mode, the corresponding multiple access mode is the first multiple access mode, the second multiple access mode, and the third multiple access mode. Any of them.
  • the transmitter 1011 is further configured to send, by using a corresponding multiple access method, downlink data to the user equipment on a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is The stored correspondence is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the processor 1012 is further configured to query a corresponding multiple access mode corresponding to the specified multiple access mode used by the user equipment, and the transmitter 1011 is specifically configured to use the processor.
  • the corresponding multiple access mode queried by the 1012 is time-frequency corresponding to the corresponding multiple access mode.
  • the source sends downlink data to the user equipment.
  • the receiver 1013 is further configured to receive the receiving feedback sent by the user equipment.
  • the transmitter 1011 is configured to: if the receiver 1013 does not receive the receiving feedback of the downlink data by the user equipment, use the at least two multiple access manners that are different from the corresponding multiple access manners.
  • the time-frequency resources corresponding to the other multiple access modes retransmit the downlink data to the user equipment.
  • the user equipment 1050 includes: a receiver 1051, a memory 1052, a processor 1053, and a transmitter 1054.
  • the memory 1052 is configured to pre-store the multiple access mode selection range that is agreed in advance.
  • the multiple access mode selection range is an optional range when the user equipment selects the multiple access mode in the at least two multiple access modes according to the service type.
  • the receiver 1051 is configured to receive, by using the base station, signaling for configuring a multiple access mode selection range, where the memory 1052 is further configured to store, by the base station, the base station receives the The multiple access mode selection range configured by the signaling.
  • the processor 1053 is configured to obtain a correspondence between at least two multiple access modes and time-frequency resources. Specifically, the processor 1053 is specifically configured to acquire the corresponding relationship that is stored in advance, where the corresponding relationship is a previously agreed correspondence relationship; or the processor 1053 is further configured to control the receiver. 1051: Receive the corresponding relationship that is sent by the base station according to a predetermined sending manner, where the predetermined sending manner includes: sending a notification by using a system broadcast or by signaling.
  • the processor 1053 is further configured to select, in the at least two multiple access manners, a multiple access mode as the designated multiple access mode according to a predetermined condition.
  • the predetermined condition includes a combination of one or more of a QOS priority of a service type, a signal strength, a size of a data block in a service type, and a multiple access mode selection range.
  • the processor 1053 is specifically configured to: if the predetermined condition includes a QOS priority of a service type, select the first multiple access mode as the foregoing when the QOS priority of the service type is high.
  • the processor 1053 is further configured to: if the predetermined condition includes a signal strength, when the signal strength is lower than a first preset threshold, select the second multiple access mode as the
  • the processor 1053 is further configured to: if the predetermined condition includes a size of a data block in the service type, when the data block size transmitted in the service type is smaller than a fourth preset threshold,
  • the third multiple access mode is used as the designated multiple access mode; the processor 1053 is further configured to: if the predetermined condition includes a multiple access mode selection range, the multiple access mode selection range stored in the memory 1052 Selecting a multiple access mode as the designated multiple access among the defined optional ranges the way.
  • the transmitter 1054 is configured to send uplink data to the base station by using a time-frequency resource corresponding to the specified multiple access mode selected by the processor 1053.
  • the receiver 1051 is further configured to receive downlink data that is sent by the base station by using a corresponding multiple access mode on a time-frequency resource corresponding to the corresponding multiple access mode, where the corresponding multiple access mode is that the base station is pre-stored according to the foregoing Corresponding relationship is a multiple access mode associated with the specified multiple access mode queried in the at least two multiple access modes.
  • the transmitter 1054 is further configured to send the receiving feedback to the base station after the receiver 1051 receives the downlink data.
  • the receiver 1051 is further configured to receive downlink data that is retransmitted by the base station, where the retransmitted downlink data is that the base station does not receive the user equipment, and the using the corresponding multiple access mode is After the receiving feedback of the downlink data sent on the time-frequency resource corresponding to the corresponding multiple access mode, the user equipment is re-introduced to the user equipment by using another multiple access mode different from the corresponding multiple access mode in the at least two multiple access modes. Sent.
  • the processor 1053 is further configured to determine, at predetermined time intervals, whether the currently designated designated multiple access mode still meets the predetermined condition.
  • the processor 1053 is further configured to: if it is determined that the currently designated designated multiple access mode still meets the predetermined condition, maintaining the currently used designated multiple access mode remains unchanged.
  • the processor 1053 is further configured to: if it is determined that the currently designated designated multiple access mode has not met the predetermined condition, re-select one of the at least two multiple access modes according to the predetermined condition as the designated multiple. Address method.
  • the communication system acquires the correspondence between at least two types of multiple access modes and time-frequency resources through the user equipment; and the base station receives the time-frequency corresponding to the specified multiple access mode by the user equipment in the specified multiple access mode.
  • the problem of the demand of the device achieves the effect that the same communication system can simultaneously provide multiple multiple access modes for the user equipment to meet the needs of different user equipments.
  • the base station pre-stores the corresponding relationship between the specified multiple access mode and the corresponding multiple access mode, so that after receiving the uplink data sent by the user equipment, the base station can adopt and specify the multiple access according to the pre-stored corresponding relationship.
  • the corresponding multiple access mode associated with the mode sends downlink data to the user equipment on the time-frequency resource corresponding to the corresponding multiple access mode, and the base station adopts the user equipment cannot
  • the method of identifying the downlink data causes the communication to be interrupted, and the effect of ensuring the smooth communication process is achieved without significantly increasing the complexity of the device of the user equipment.

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Abstract

本发明实施例提供了一种通信方法、基站、用户设备和系统，涉及通信技术领域，所述方法包括：接收所述用户设备采用指定多址方式在指定多址方式所对应的时频资源上发送的上行数据；采用相应多址方式在相应多址方式所对应的时频资源上向所述用户设备发送下行数据，所述相应多址方式是根据预先存储的对应关系在所述至少两种多址方式中查询到的与所述上行接收模块接收到的所述指定多址方式相关联的一种多址方式。解决了在同一通信系统中采用一种多址方式无法同时满足不同用户设备的需求的问题；达到了在同一个通信系统可以同时提供多种多址方式供用户设备选择，能够满足不同用户设备的需求的效果。

Description

通信方法、 基站、 用户设备和系统 技术领域
本发明涉及通信技术领域， 特别涉及一种通信方法、 基站、 用户设备和系 统。 背景技术
无线通信系统中， 数据在特定逻辑位置的收发称为多址方式， 特定逻辑位 置按照时间、 频率或扩频码字划分。 系统通过多址方式实现基站和多个用户设 备之间的通信。
现有技术中， 一个通信系统采用一种多址方式来实现基站和用户设备之间 的通信。比 口,在采用 OFDMA( Orthogonal Frequency Division Multiple Access, 正交频分复用多址接入）多址方式的通信系统中， 基站通过不同的子载波向不 同的用户设备发送下行数据， 而用户设备通过对应子载波向基站发送上行数据。 由于基站和不同的用户设备之间通过相互正交的子载波进行通信， 所以在采用 OFDMA多址方式的通信系统中， 不同的用户设备之间不构成相互干扰， 所以 具有很好的抗干扰性。
在实现本发明的过程中， 发明人发现现有技术至少存在以下问题： 由于一 个通信系统中自始至终采用一种多址方式实现基站和各个用户设备之间的通 信， 虽然具有所采用多址方式的优点， 但也具有该多址方式的缺点， 在未来 M2M ( Machine to machine, 端到端） 业务中， 可能要求同一网络中满足不同 类型的需求。 比如， 在一个通信系统中， 存在处于地下室或者矿井等环境中的 用户设备， 就要求通信系统具有艮强的覆盖性， 采用 OFDMA多址方式就可以 满足该通信系统的要求，但是对于该通信系统中要求高速率传输或者需要传输 大量小数据的用户设备， 则 OFDMA多址方式就无法满足上述要求。 发明内容
为了解决现有通信系统采用一种多址方式无法同时满足不同用户设备的 需求的问题， 本发明实施例提供了一种通信方法、 基站、 用户设备和系统。 所 述技术方案如下：
第一方面， 提供了一种通信方法， 用于基站侧， 所述方法包括：
接收所述用户设备采用指定多址方式在所述指定多址方式所对应的时频 资源上发送的上行数据， 所述指定多址方式为所述用户设备根据预定条件在至 少两种多址方式中选择出的一种多址方式；
采用相应多址方式在所述相应多址方式所对应的时频资源上向所述用户 设备发送下行数据， 所述相应多址方式是根据预先存储的对应关系在所述至少 两种多址方式中查询到的与所述指定多址方式相关联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
结合第一方面， 在第一方面的第一种可能的实施方式中， 所述接收用户设 备采用指定多址方式在所述指定多址方式所对应的时频资源上发送的上行数 据之前， 还包括：
按照预定发送方式向所述用户设备发送所述至少两种多址方式与所述时 频资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。 结合第一方面的第一种可能的实施方式， 在第二种可能的实施方式中， 所 述按照预定发送方式向所述用户设备发送所述至少两种多址方式与所述时频 资源之间的对应关系之前， 还包括：
按照预定划分方式生成所述至少两种多址方式与所述时频资源之间的对 应关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
结合第一方面、 第一方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述采用相应多址方式在所述相应多址方式所对应的时频 资源上向所述用户设备发送下行数据之前， 还包括：
存储所述指定多址方式与所述相应多址方式之间的——对应关系， 所述一 一对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
结合第一方面、 第一方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述采用相应多址方式在所述相应多址方式所对 应的时频资源上向所述用户设备发送下行数据， 包括：
查询与所述用户设备最近一次所使用的指定多址方式所对应的相应多址 方式；
采用查询到的所述相应多址方式在所述相应多址方式所对应的时频资源 上向所述用户设备发送下行数据。
结合第一方面、 第一方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述采用相应多址方式在所述相应多址 方式所对应的时频资源向所述用户设备发送下行数据之后， 还包括：
若未接收到所述用户设备对所述下行数据的接收反馈， 则采用所述至少两 种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户设备 发送下行数据。
结合第一方面、 第一方面的第一种、 第二种、 第三种、 第四种或者第五种 可能的实施方式， 在第六种可能的实施方式中， 所述预定条件包括多址方式选 择范围， 所述向用户设备提供对应关系之前， 还包括：
向所述用户设备发送用于配置多址方式选择范围的信令， 所述多址方式选 择范围为所述用户设备根据预定条件在所述至少两种多址方式中选择多址方 式时的可选范围。
第二方面， 提供了一种通信方法， 用于用户设备侧， 所述方法包括： 获取至少两种多址方式与时频资源之间的对应关系；
根据预定条件在所述至少两种多址方式中选择出一种多址方式作为指定 多址方式；
采用所述指定多址方式在所述指定多址方式所对应的时频资源上向所述 基站发送上行数据；
接收所述基站采用相应多址方式在所述相应多址方式所对应的时频资源 发送的下行数据， 所述相应多址方式是所述基站根据预先存储的对应关系在所 述至少两种多址方式中查询到的与所述指定多址方式相关联的一种多址方式； 所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
结合第二方面， 在第二方面的第一种可能的实施方式中， 所述获取至少两 种多址方式与时频资源之间的对应关系， 包括：
获取预先存储的所述对应关系， 所述对应关系为事先约定的对应关系； 或，
接收所述基站按照预定发送方式发送的所述对应关系， 所述预定发送方式 包括： 通过系统广播通知或者通过信令通知。
结合第二方面， 在第二种可能的实施方式中， 所述预定条件包括业务类型 的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中 的至少一种， 所述根据预定条件在所述第一多址方式、 第二多址方式和第三多 址方式中选择出一种多址方式作为指定多址方式， 包括：
若所述预定条件包括业务类型的 QOS优先级， 则在所述业务类型的 QOS 优先级较高时选择所述第一多址方式作为所述指定多址方式；
若所述预定条件包括信号强度， 则在所述信号强度低于第一预设阈值时， 选择所述第二多址方式作为所述指定多址方式；
若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输 的数据块大小小于第四预设阈值时，选择所述第三多址方式作为所述指定多址 方式；
若所述预定条件包括多址方式选择范围， 则在所述多址方式选择范围所限 定的可选范围中选择出一种多址方式作为所述指定多址方式。
结合第二方面、 第二方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述根据根据预定条件在所述至少两种多址方式中选择出 一种多址方式作为指定多址方式之前， 还包括：
预先存储所述多址方式选择范围， 所述多址方式选择范围为事先约定的多 址方式选择范围；
或，
接收所述基站发送的用于配置多址方式选择范围的信令； 存储所述信令配 置的多址方式选择范围。
结合第二方面、 第二方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述多址方式选择范围中的可选多址方式为两种 或者三种， 所述根据预定条件在所述第一多址方式、 第二多址方式和第三多址 方式中选择出一种多址方式作为指定多址方式之后， 还包括：
每隔预定时间间隔判断当前所采用的指定多址方式是否仍然符合所述预 定条件；
若判断结果为当前所采用的指定多址方式仍然符合所述预定条件， 则维持 当前所采用的指定多址方式保持不变；
若判断结果为当前所采用的指定多址方式已经不符合所述预定条件， 则重 新根据所述预定条件在所述第一多址方式、所述第二多址方式和所述第三多址 方式中选择出一种多址方式作为指定多址方式。
结合第二方面、 第二方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述接收所述基站采用相应多址方式在 所述相应多址方式所对应的时频资源上发送的下行数据之后， 还包括：
接收所述基站重新发送的下行数据， 所述重新发送的下行数据是所述基站 在未接收到所述用户设备对所述采用相应多址方式在所述相应多址方式所对 应的时频资源上发送的下行数据的接收反馈后， 采用所述至少两种多址方式中 与所述相应多址方式不同的其它多址方式重新向所述用户设备发送的。
第三方面， 提供了一种基站， 所述基站， 包括：
上行接收模块， 用于接收用户设备采用指定多址方式在所述指定多址方式 所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设备根据 预定条件在至少两种多址方式中选择出的一种多址方式；
下行发送模块， 用于采用相应多址方式在所述相应多址方式所对应的时频 资源向所述用户设备发送下行数据， 所述相应多址方式是根据预先存储的对应 关系在所述至少两种多址方式中查询到的与所述上行接收模块接收到的所述 指定多址方式相关联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
结合第三方面， 在第三方面的第一种可能的实施方式中， 所述基站， 还包 括：
关系发送模块；
所述关系发送模块， 用于按照预定发送方式向所述用户设备发送所述至少 两种多址方式与所述时频资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。 结合第三方面的第一种可能的实施方式， 在第二种可能的实施方式中， 所 述基站， 还包括：
关系生成模块， 用于按照预定划分方式生成所述至少两种多址方式与所述 时频资源之间的对应关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
结合第三方面、 第三方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述基站， 还包括：
存储关系模块， 用于存储所述指定多址方式与所述相应多址方式之间的一 一对应关系， 所述——对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
结合第三方面、 第三方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述下行发送模块， 包括： 查询单元和发送单元；
所述查询单元， 用于查询所述上行接收模块接收到的与所述用户设备最近 一次所使用的指定多址方式所对应的相应多址方式；
所述发送单元， 用于采用所述查询单元查询到的所述相应多址方式在所述 相应多址方式所对应的时频资源上向所述用户设备发送下行数据。
结合第三方面、 第三方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述基站， 还包括：
重发模块， 用于若未接收到所述用户设备对所述下行发送模块发送的所述 下行数据的接收反馈， 则采用所述关系提供模块提供的所述至少两种多址方式 中与所述相应多址方式不同的其它多址方式重新向所述用户设备发送下行数 据。
结合第三方面、 第三方面的第一种、 第二种、 第三种、 第四种或者第五种 可能的实施方式， 在第六种可能的实施方式中， 所述预定条件包括多址方式选 择范围， 所述基站， 还包括：
信令发送模块， 用于向所述用户设备发送用于配置多址方式选择范围的信 令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种多址 方式中选择多址方式时的可选范围。
第四方面， 提供了一种用户设备， 所述用户设备， 包括：
关系获取模块， 用于获取至少两种多址方式与时频资源之间的对应关系； 方式选择模块， 用于根据预定条件在所述关系获取模块获取到的所述至少 两种多址方式中选择出一种多址方式作为指定多址方式；
上行发送模块， 用于采用所述方式选择模块选择出的所述指定多址方式在 所述指定多址方式所对应的时频资源上向所述基站发送上行数据；
下行接收模块， 用于接收所述基站采用相应多址方式在所述相应多址方式 所对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关 联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的任意两种或者全部三种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多 址方式为 OFDMA+码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多 址方式； 所述第三多址方式为 OFDMA+交织多址接入 IDMA 多址方式或者 SC-FDMA+IDMA多址方式。
结合第四方面， 在第四方面的第一种可能的实施方式中， 所述关系获取模 块， 包括：
关系获取模块， 用于获取至少两种多址方式与时频资源之间的对应关系； 方式选择模块， 用于根据预定条件在所述关系获取模块获取到的所述至少 两种多址方式中选择出一种多址方式作为指定多址方式；
上行发送模块， 用于采用所述方式选择模块选择出的所述指定多址方式在 所述指定多址方式所对应的时频资源上向所述基站发送上行数据；
下行接收模块， 用于接收所述基站采用相应多址方式在所述相应多址方式 所对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关 联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的任意两种或者全部三种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多 址方式为 OFDMA+码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多 址方式； 所述第三多址方式为 OFDMA+交织多址接入 IDMA 多址方式或者 SC-FDMA+IDMA多址方式。
结合第四方面， 在第二种可能的实施方式中， 所述预定条件包括业务类型 的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中 的至少一种， 所述方式选择模块， 包括：
第一选择单元、 第二选择单元、 第三选择单元和第四选择单元中的至少一 个；
所述第一选择单元， 用于若所述预定条件包括业务类型的 QOS优先级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所述指定 多址方式；
所述第二选择单元， 用于若所述预定条件包括信号强度， 则在所述信号强 度低于第一预设阈值时 , 选择所述第二多址方式作为所述指定多址方式；
所述第三选择单元， 用于若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第三多 址方式作为所述指定多址方式；
所述第四选择单元， 用于若所述预定条件包括多址方式选择范围， 则在所 述多址方式选择范围所限定的可选范围中选择出一种多址方式作为所述指定 多址方式。
结合第四方面， 第四方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述用户设备， 还包括：
约定存储模块， 用于预先存储所述多址方式选择范围， 所述多址方式选择 范围为事先约定的多址方式选择范围；
或，
信令接收模块， 用于接收所述基站发送的用于配置多址方式选择范围的信 令； 存储模块， 用于存储所述信令接收模块接收到的所述信令配置的多址方式 选择范围。
结合第四方面， 第四方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述多址方式选择范围中的可选多址方式为两种 或者三种， 所述用户设备， 还包括：
判断模块， 用于每隔预定时间间隔判断所述上行发送模块当前所采用的指 定多址方式是否仍然符合所述预定条件；
维持模块， 用于若所述判断模块的判断结果为当前所采用的指定多址方式 仍然符合所述预定条件， 则维持当前所采用的指定多址方式保持不变；
重新选择模块， 用于若所述判断模块的判断结果为当前所采用的指定多址 方式已经不符合所述预定条件， 则重新根据所述预定条件在所述第一多址方式、 所述第二多址方式和所述第三多址方式中选择出一种多址方式作为指定多址 方式。
结合第四方面， 第四方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述用户设备， 还包括：
重收模块， 用于接收所述基站重新发送的下行数据， 所述重新发送的下行 数据是所述基站在未接收到所述用户设备对所述采用相应多址方式在所述相 应多址方式所对应的时频资源发送的下行数据的接收反馈后， 采用所述至少两 种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户设备 发送的。
第五方面， 提供了一种通信系统， 包括第三方面各种可能的实施方式中任 一所述的基站和第四方面各种可能的实施方式中任一所述的用户设备。
第六方面， 提供了一种基站， 所述基站， 包括：
处理器、 接收机和发送机；
所述接收机， 用于接收所述用户设备采用指定多址方式在所述指定多址方 式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设备根 据预定条件在至少两种多址方式中选择出的一种多址方式；
所述发送机， 用于采用相应多址方式在所述相应多址方式所对应的时频资 源向所述用户设备发送下行数据， 所述相应多址方式是所述处理器根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关 联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
结合第六方面， 在第六方面的第一种可能的实施方式中， 所述处理器， 具 体用于与所述用户设备事先约定所述对应关系；
或，
所述发送机，还用于按照预定发送方式向所述用户设备发送所述至少两种 多址方式与所述时频资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。 结合第六方面第一种可能的实施方式， 在第二种可能的实施方式中， 所述 处理器，还用于按照预定划分方式生成所述至少两种多址方式与所述时频资源 之间的对应关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
结合第六方面、 第六方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述基站， 还包括：
存储器， 用于存储所述指定多址方式与所述相应多址方式之间的一一对应 关系， 所述——对应关系， 包括： 若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
结合第六方面、 第六方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述处理器， 还用于查询所述接收机接收到的与 所述用户设备最近一次所使用的指定多址方式所对应的相应多址方式；
所述发送机，还用于采用所述处理器查询到的所述相应多址方式在所述相 应多址方式所对应的时频资源上向所述用户设备发送下行数据。
结合第六方面、 第六方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述处理器， 还用于若所述接收机未接 收到所述用户设备对所述下行数据的接收反馈， 则控制所述发射机采用所述至 少两种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户 设备发送下行数据。
结合第六方面、 第六方面的第一种、 第二种、 第三种、 第四种或者第五种 可能的实施方式， 在第六种可能的实施方式中， 所述预定条件包括多址方式选 择范围， 所述发送机， 还用于向所述用户设备发送用于配置多址方式选择范围 的信令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种 多址方式中选择多址方式时的可选范围。
第七方面， 提供了一种用户设备， 所述用户设备， 包括：
处理器、 发送机和接收机；
所述处理器， 用于获取至少两种多址方式与时频资源之间的对应关系； 所述处理器，还用于根据预定条件在所述至少两种多址方式中选择出一种 多址方式作为指定多址方式；
所述发送机， 用于采用所述处理器选择出的所述指定多址方式在所述指定 多址方式所对应的时频资源上向所述基站发送上行数据；
所述接收机， 用于接收所述基站采用相应多址方式在所述相应多址方式所 对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先存储 的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关联 的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
结合第七方面， 在第七方面的第一种可能的实施方式中， 所述处理器， 具 体用于获取预先存储的所述对应关系， 所述对应关系为事先约定的对应关系； 或，
所述处理器，还具体用于控制所述接收机接收所述基站按照预定发送方式 发送的所述对应关系， 所述预定发送方式包括： 通过系统广播通知或者通过信 令通知。
结合第七方面， 在第二种可能的实施方式中， 所述预定条件包括业务类型 的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中 的至少一种， 所述处理器， 具体用于若所述预定条件包括业务类型的 QOS优 先级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所 述指定多址方式；
所述处理器， 还具体用于若所述预定条件包括信号强度， 则在所述信号强 度低于第一预设阈值时 , 选择所述第二多址方式作为所述指定多址方式；
所述处理器， 还具体用于若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第三多 址方式作为所述指定多址方式；
所述处理器， 还具体用于若所述预定条件包括多址方式选择范围， 则在所 述多址方式选择范围所限定的可选范围中选择出一种多址方式作为所述指定 多址方式。
结合第七方面， 第七方面的第一种或者第二种可能的实施方式， 在第三种 可能的实施方式中， 所述用户设备， 还包括：
存储器；
所述存储器， 用于预先存储所述多址方式选择范围， 所述多址方式选择范 围为事先约定的多址方式选择范围； 或， 所述接收机， 还用于接收所述基站发送的用于配置多址方式选择范围 的信令； 所述存储器， 还用于存储所述接收机接收到的所述信令配置的多址方 式选择范围。
结合第七方面， 第七方面的第一种、 第二种或者第三种可能的实施方式， 在第四种可能的实施方式中， 所述多址方式选择范围中的可选多址方式为两种 或者三种，
所述处理器，还用于每隔预定时间间隔判断所述发送机当前所采用的指定 多址方式是否仍然符合所述预定条件；
所述处理器，还用于若判断结果为当前所采用的指定多址方式仍然符合所 述预定条件， 则维持当前所采用的指定多址方式保持不变；
所述处理器，还用于若所述判断模块的判断结果为当前所采用的指定多址 方式已经不符合所述预定条件， 则重新根据所述预定条件在所述至少两种多址 方式中选择出一种多址方式作为指定多址方式。
结合第七方面， 第七方面的第一种、 第二种、 第三种或者第四种可能的实 施方式， 在第五种可能的实施方式中， 所述接收机， 还用于接收所述基站重新 发送的下行数据， 所述重新发送的下行数据是所述基站在未接收到所述用户设 备对所述采用相应多址方式在所述相应多址方式所对应的时频资源上发送的 下行数据的接收反馈时， 采用所述至少两种多址方式中与所述相应多址方式不 同的其它多址方式重新向所述用户设备发送的。
第八方面， 提供了一种通信系统， 包括第六方面各种可能的实施方式中任 一所述的基站和第七方面各种可能的实施方式中任一所述的用户设备。
本发明实施例提供的技术方案的有益效果是：
通过基站接收用户设备采用指定多址方式在指定多址方式所对应的时频 资源上发送的上行数据， 指定多址方式为用户设备根据预定条件在至少两种多 址方式中选择出的一种多址方式； 采用相应多址方式在相应多址方式所对应的 时频资源向用户设备发送下行数据，相应多址方式是根据预先存储的对应关系 在至少两种多址方式中查询到的与所述指定多址方式相关联的一种多址方式； 解决了在同一通信系统中采用一种多址方式无法同时满足不同用户设备的需 求的问题； 达到了在同一个通信系统可以同时提供多种多址方式供用户设备选 择， 能够满足不同用户设备的需求的效果。 附图说明
为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所 需要使用的附图作筒单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明 的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明一个实施例提供的通信方法的方法流程图；
图 2是本发明另一实施例提供的通信方法的方法流程图；
图 3a是本发明实施例中时分方式下三种多址方式与时频资源之间的对应 关系的结构示意图；
图 3b是本发明实施例中频分方式下三种多址方式与时频资源之间的对应 关系的结构示意图；
图 3c是本发明实施例中时频分方式下三种多址方式与时频资源之间的对 应关系的结构示意图；
图 4是本发明另一实施例提供的通信方法的方法流程图；
图 5是本发明一个实施例提供的通信系统的结构示意图；
图 6是本发明另一实施例提供的通信系统的结构示意图；
图 7是本发明另一实施例提供的通信系统的结构示意图；
图 8是本发明一个实施例提供的通信系统的结构方框图；
图 9是本发明另一实施例提供的通信系统的结构方框图；
图 10是本发明另一实施例提供的通信系统的结构方框图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本发明 实施方式作进一步地详细描述。
本发明实施例为用户设备提供两种或者两种以上的多址方式，使得用户设 备可以按照业务需求来自由选择满足业务需求的多址方式， 下面对本发明实施 例涉及的三种类型的多址方式做筒单介绍：
1、 第一多址方式；
第一多址方式可以为 OFDMA ( Orthogonal Frequency Division Multiple Access , 正交频分复用多址接入） 多址方式或者 SC-FDMA ( Single-carrier Frequency-Division Multiple Access , 单载波频分多址接入 ) 多址方式。 OFDMA多址方式是在 OFDM ( Orthogonal Frequency Division Multiple, 正交频分复用）调制技术的基础上产生的一种多址方式。 OFDM调制技术将信 道分成若干个正交子信道， 将高速数据信号转换成并行的低速子数据流， 调制 到相互正交的子信道上进行传输。 相应的， OFDMA多址方式将传输带宽划分 成正交的互不重叠的一系列子载波集，将不同的子载波集分配给不同的用户设 备实现多址。 由于 OFDMA多址方式的特点，在采用 OFDMA多址方式的通信 系统中， 基站和用户设备通过相互正交的子载波传输通信数据， 理想情况下， 各用户设备之间无干扰；并且由于 OFDMA系统动态的将可用带宽资源分配给 需要的用户设备，实现了系统资源的优化利用。 SC-FDMA多址方式与 OFDMA 多址方式在技术上存在很大部分的类似， 相关技术细节不再赘述， 但是需要说 明的是， SC-FDMA多址方式和 OFDMA多址方式都具有可以有效地对抗干扰， 提高频谱利用率， 并且能够高速率的传输数据的优点。
2、 第二多址方式；
第二多址方式是 OFDMA+CDMA ( Code Division Multiple Access , 码分多 址接入 ) 多址方式或者 SC-FDMA +CDMA多址方式。
OFDMA+CDMA多址方式是 OFDMA和 CDMA相组合类型的多址系统。 已有的属于该种类型的多址方式包括 MC-CDMA ( Multi Carrier-Code Division Multiple Access,多载波码分多址）多址方式， 以及 LDS-OFDMA ( Low Density Signature Orthogonal Frequency Division Multiple Access, 低密度正交频分复用 多址接入）多址方式等。其中， CDMA是基于码分技术和多址技术的通信系统， 该系统为每个用户设备分配各自特定的地址码， 不同的地址码之间具有相互正 交性， 从而在时间、 空间和频率上都可以重叠。 基站将需要传送的具有一定信 号带宽的通信数据， 用一个带宽远大于信号带宽的伪随机码进行调制， 使得原 有的通信数据的信号带宽被扩展， 用户设备在接收到基站发送的调制后的信息 后， 通过相反的过程， 得到基站发送的通信数据。 而 OFDMA和 CDMA相组 合类型既具有传统 CDMA抗干扰性强， 容量大的优点， 又具有 OFDMA的抗 多径干扰能力， 比如 MC-CDMA 系统， 在实际通信过程中， 先将原始数据流 复制成 N路并行数据， 每一路数据乘以长度为 N的频域扩展码的一位， 再调 制到相互正交的子载波上传输， 使得采用 MC-CDMA 多址方式的系统， 既具 有传统 CDMA抗干扰性强， 容量大的优点， 又具有 OFDMA的抗多径干扰能 力。 SC-FDMA+CDMA多址方式与 OFDMA+CDMA多址方式在技术上存在 4艮 大部分的类似，相关技术细节不再赘述，但是需要说明的是， SC-FDMA+CDMA 多址方式和 OFDMA+CDMA多址方式都具有覆盖范围广的优点。
3、 第三多址方式；
第三多址方式为 OFDMA+ IDMA ( Interleaver-Division Multiple Access, 交 织多址） 多址方式或者 SC-FDMA+IDMA多址方式。
OFDMA+IDMA是 OFDMA和 IDMA相组合形成的一种新的多址方式。 其中， IDMA使用用户设备唯一标识的码片级交织器来区分用户设备和信道。 和传统 CDMA 系统相比， IDMA 具有更好的抗多址干扰性能。 而采用 OFDMA+IDMA多址方式的系统， 就具有频谱利用率更高、 系统吞吐量更大和 容纳更多用户设备的优点。 SC-FDMA+IDMA多址方式与 OFDMA+IDMA多址 方式在技术上存在很大部分的类似， 相关技术细节不再赘述， 但是需要说明的 是， SC-FDMA+IDMA多址方式和 OFDMA+IDMA多址方式在传输大量小数据 包时具有较强的优势。 请参考图 1 ,其示出了本发明一个实施例中提供的通信方法的方法流程图。 本实施例主要以该通信方法应用于包括基站和用户设备的通信系统中来举例 说明。 该通信方法， 包括：
步骤 102, 用户设备获取至少两种多址方式与时频资源之间的对应关系； 用户设备获取至少两种多址方式与时频资源之间的对应关系。 该至少两种 多址方式包括第一多址方式、 第二多址方式和第三多址方式中的至少两种， 第 一多址方式为 OFDMA多址方式或者 SC-FDMA多址方式； 第二多址方式为 OFDMA+CDMA多址方式或者 SC-FDMA +CDMA多址方式；第三多址方式为 OFDMA+IDMA多址方式或者 SC-FDMA+IDMA多址方式。每种多址方式具有 不同的时频资源与自身对应。
步骤 104, 用户设备根据预定条件在至少两种多址方式中选择出一种多址 方式作为指定多址方式；
用户设备根据预定条件在至少两种多址方式中选择出一种多址方式作为 指定多址方式； 该预定条件可以包括业务类型的 QOS优先级、 信号强度、 业 务类型中数据块的大小和多址方式选择范围中的至少一种。
步骤 106, 用户设备采用指定多址方式在指定多址方式所对应的时频资源 上向基站发送上行数据；
用户设备采用指定多址方式在指定多址方式所对应的时频资源上向基站 发送上行数据； 该指定多址方式为用户设备根据预定条件在至少两种多址方式 中选择出的一种多址方式。
相应的，基站接收用户设备采用指定多址方式在指定多址方式所对应的时 频资源上发送的上行数据；
步骤 108, 基站采用相应多址方式在相应多址方式所对应的时频资源上向 用户设备发送下行数据；
基站采用相应多址方式在相应多址方式所对应的时频资源上向用户设备 发送下行数据； 该相应多址方式是基站根据预先存储的对应关系在至少两种多 址方式中查询到的与指定多址方式相关联的一种多址方式。
相应的， 用户设备接收基站采用该相应多址方式在该相应多址方式所对应 的时频资源上发送的下行数据。
综上所述， 本实施例提供的通信方法， 通过基站接收用户设备采用指定多 址方式在指定多址方式所对应的时频资源上发送的上行数据， 指定多址方式为 用户设备根据预定条件在至少两种多址方式中选择出的一种多址方式； 采用相 应多址方式在相应多址方式所对应的时频资源向用户设备发送下行数据，相应 多址方式是根据预先存储的对应关系在至少两种多址方式中查询到的与所述 指定多址方式相关联的一种多址方式； 解决了在同一通信系统中采用一种多址 方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通信系统可以 同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的需求的效果。 请参考图 2, 其示出了本发明另一个实施例中提供的通信方法的方法流程 图。 本实施例主要以该通信方法应用于包括基站和用户设备的通信系统中来举 例说明。 该通信方法， 包括：
步骤 201 , 基站按照预定划分方式生成至少两种多址方式与时频资源之间 的对应关系；
基站按照预定划分方式生成至少两种多址方式与时频资源之间的对应关 系； 该预定划分方式包括按照时域划分、 按照频域划分和按照时频域划分三种 方式中的任意一种。 其中， 第一多址方式为 OFDMA多址方式或者 SC-FDMA 多址方式； 第二多址方式为 OFDMA+CDMA多址方式或者 SC-FDMA+CDMA 多址方式； 第三多址方式为 OFDMA+IDMA多址方式或者 SC-FDMA+IDMA 多址方式。
本发明实施例中以至少两种多址方式包括第一多址方式、 第二多址方式和 第三多址方式全部三种， 且第一多址方式为 OFDMA多址方式、 第二多址方式 为 OFDMA+CDMA多址方式、第三多址方式为 OFDMA+IDMA多址方式为例 进行说明。 请参考图 3a、 图 3b和图 3c, 其分别示出了本发明实施例中基站按 照时分、 频分和时频分三种不同的划分方式下， 三种多址方式与时频资源之间 的对应关系的结构示意图。 由图 3a、 图 3b和图 3c可以看出基站按照时分、 频 分和时频分方式三种不同的划分方式下， 三种多址方式和时频资源之间的对应 关系。 具体来讲：
第一， 时分方式下， 三种多址方式和时频资源的对应关系；
图 3a中的时分方式下， OFDMA+IDMA多址方式可以放在第一时间段、 OFDMA多址方式可以放在第二时间段、 OFDMA+CDMA多址方式可以放在第 三时间段， 依次循环。
第二， 频分方式下， 三种多址方式和时频资源的对应关系；
图 3b 中的频分方式下， 三种多址方式分别占用不同的频段， OFDMA多 址方式可以占用较高频段； OFDMA+IDMA 多址方式可以占用次高频段； OFDMA+CDMA多址方式可以占用较低频段。
第三， 时频分方式下， 三种多址方式和时频资源的对应关系；
图 3c 中的时频分方式中， 三种多址方式在每个频段和每个时间段内都存 在， 比如， 在第一时间段内， OFDMA+CDMA多址方式、 OFDMA+IDMA多 址方式和 OFDMA多址方式分别使用占用不同的频段； 在第二时间段内， 三种 多址方式也占用不同的频段， 但是和第一时间段内相比， 每种多址方式所占用 的频段可以不变， 也可以改变。
步骤 202, 基站按照预定发送方式向用户设备发送至少两种多址方式与时 频资源之间的对应关系；
基站按照预定发送方式向用户设备发送至少两种多址方式与时频资源之 间的对应关系， 其中， 预定发送方式包括： 通过系统广播通知或者通过信令通 知。 也即：
第一， 基站在系统广播中向用户设备发送通知， 通知中携带有对应关系； 基站将三种多址方式和时频资源的对应关系通过在系统广播中发送通知 的方式发送给用户设备。 比如， 基站将按照预定划分方式生成的对应关系通过 在系统广播中发送通知的方式发送给用户设备， 若预定方式为按照频域划分， 则基站在系统广播中发送的通知包括图 3b 中所示的三种多址方式和时频资源 的对应关系： OFDMA多址方式占用较高频段； OFDMA+IDMA多址方式占用 次高频段； OFDMA+CDMA多址方式占用较低频段。
第二， 基站向用户设备发送信令， 信令中携带有对应关系；
基站将三种多址方式和时频资源的对应关系通过发送信令的方式发送给 用户设备。 比如， 基站将按照预定方式生成的对应关系通过在系统广播中发送 通知的方式发送给用户设备， 若预定方式为按照时频域划分， 则基站发送的信 令中包括图 3c 中所示的三种多址方式和时频资源的对应关系： 在第一时间段 内， OFDMA+CDMA多址方式、 OFDMA+IDMA多址方式和 OFDMA多址方 式分别使用占用不同的频段； 在第二时间段内， 三种多址方式也占用不同的频 段， 但是和第一时间段内相比， 每种多址方式所占用的频段可以不变， 也可以 改变。
步骤 203 , 用户设备获取至少两种多址方式与时频资源之间的对应关系； 基站按照预定发送方式向用户设备发送至少两种多址方式与时频资源之 间的对应关系之后， 用户设备可以接收基站按照预定发送方式发送的对应关系， 该预定发送方式包括： 通过系统广播通知或者通过信令通知。 然后用户设备可 以存储该对应关系。
需要补充说明的是， 用户设备获取至少两种多址方式与时频资源之间的对 应关系不局限于接收基站发送的对应关系这一种途径。在事先约定至少两种多 址方式与时频资源之间的对应关系场景下， 用户设备可以预先存储至少两种多 址方式与时频资源之间的对应关系； 然后在需要使用时， 获取预先存储的对应 关系， 该对应关系为事先约定的对应关系。
步骤 204, 用户设备根据预定条件在至少两种多址方式中选择出一种多址 方式作为指定多址方式；
由于三种多址方式分别具有各自的优点， 比如， OFDMA 多址方式具有 高速率的优点； OFDMA+CDMA 多址方式具有覆盖范围广的优点； OFDMA+IDMA多址方式具有适合传输大量小数据包的优点。用户设备可以根 据预定条件来选择最合适的多址方式， 该预定条件可以包括业务类型的 QOS 优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中的至少一 种。 具体来讲：
当用户设备需要高速率的优点时， 选择第一多址方式， 比如， 若该预定条 件包括业务类型的 QOS优先级， 则在业务类型的 QOS ( Quality of Service, 服 务质量）优先级较高时选择第一多址方式作为指定多址方式。
当用户设备需要覆盖范围广的优点时， 选择第二多址方式， 比如， 若该预 定条件包括信号强度， 则在信号强度低于第一预设阈值时， 选择第二多址方式 作为指定多址方式。
当用户设备需要传输大量小数据包时， 选择第三多址方式， 比如， 若该预 定条件包括业务类型中数据块的大小， 则在业务类型中传输的数据块大小小于 第四预设阈值时， 选择第三多址方式作为指定多址方式。
若预定条件包括多址方式选择范围， 则用户设备在多址方式选择范围内选 择一种多址方式作为指定多址方式。 比如， 用户设备的多址方式选择范围为第 一种多址方式和第二种多址方式， 则该用户设备只能在第一种多址方式和第二 种多址方式选择一种多址方式作为指定多址方式， 而不可以选择第三种多址方 式作为指定多址方式。
步骤 205, 用户设备采用指定多址方式在指定多址方式所对应的时频资源 上向基站发送上行数据；
用户设备采用指定多址方式在指定多址方式所对应的时频资源上向基站 发送上行数据。 具体来讲， 用户设备在选择出指定多址方式后， 可以根据获取 到的至少两种多址方式与时频资源的对应关系中， 查询与指定多址方式对应的 时频资源， 然后在指定多址方式所对应的时频资源上向基站发送上行数据。
相应的，基站接收用户设备采用指定多址方式在指定多址方式所对应的时 频资源上发送的上行数据。
步骤 206, 基站存储指定多址方式与相应多址方式之间的——对应关系； 通常情况下， 用户设备采用何种多址方式向基站发送上行数据， 基站在收 到该上行数据的时候， 也采用该多址方式向用户设备发送下行数据， 但是若用 户设备采用第三多址方式向基站发送上行数据， 由于第三多址方式中的 IDMA 所要求的设备复杂性比较高， 所以在用户设备采用该种多址方式向基站发送上 行数据时， 为避免增加用户设备的设备复杂性， 基站一般采用第一种或者第二 多址方式向用户设备发送下行数据。 但是， 用户设备发送上行数据的多址方式 和基站发送下行数据的多址方式之间是存在一一对应关系的，基站在收到用户 设备发送的上行数据后，要根据该对应关系采用和用户设备发送上行数据的多 址方式相关联的多址方式向该用户设备发送下行数据。 所以在基站向用户设备 发送下行数据之前，基站需要预先存储指定多址方式与相应多址方式之间的一 一对应关系。 上述一一对应关系， 包括： 若指定多址方式为第一多址方式， 则 相应多址方式为第一多址方式； 若指定多址方式为第二多址方式， 则相应多址 方式为第二多址方式； 若指定多址方式为第三多址方式， 则相应多址方式为第 一多址方式、 第二多址方式和第三多址方式中的任意一种。
步骤 207, 基站采用相应多址方式在相应多址方式所对应的时频资源上向 用户设备发送下行数据；
基站在接收到用户设备采用指定多址方式在指定多址方式所对应的时频 资源上发送的上行数据之后， 采用与指定多址方式相关联的相应多址方式在相 应多址方式所对应的时频资源上向用户设备发送下行数据， 该相应多址方式是 基站根据预先存储的对应关系在至少两种多址方式中查询到的与指定多址方 式相关联的一种多址方式。
相应的， 用户设备接收基站采用相应多址方式在相应多址方式所对应的时 频资源上发送的下行数据。
综上所述， 本实施例提供的通信方法， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 请参考图 4, 其示出了本发明另一个实施例中提供的通信方法的方法流程 图。 本实施例主要以该通信方法应用于包括基站和用户设备的通信系统中来举 例说明。 该通信方法， 包括：
步骤 401 , 基站向用户设备发送用于配置多址方式选择范围的信令； 在实际通信系统中，基站并不需要向每一个用户设备都提供两到三种可选 的多址方式。因为有些用户设备只需要采用一种多址方式收发数据即可，比如， 位于地下室或者矿井的用户设备， 可能从始至终都不需要高速率传输数据， 也 不需要传输大量小数据包， 只需要保证覆盖范围即可， 此时， 该用户设备只需 要始终使用 OFDMA多址方式即可。但是有些用户设备却需要采用多种多址方 式收发数据， 比如， 业务类型多样、 经常移动到不同的地域进行使用的用户设 备。 此时， 该用户设备可以根据需要及基站所能提供的多址方式进行选择最优 的多址方式和基站进行信息交互。
所以在基站和用户设备通信之前，基站需要向用户设备发送用于配置多址 方式选择范围的信令； 该多址方式选择范围为用户设备在至少两种多址方式中 选择多址方式时的可选范围。 比如， 通信系统中， 只允许某一用户设备采用第 一多址方式和第二多址方式和基站进行通信， 或者该用户设备的配置只支持第 一多址方式和第二多址方式， 那么在基站和该用户设备通信之前， 基站向该用 户设备发送配置多址方式选择范围的信令， 该信令用于通知该用户设备可选择 的多址方式范围为第一多址方式或者第二多址方式。
本发明实施例中仍然以至少两种多址方式包括第一多址方式、 第二多址方 式和第三多址方式全部三种来举例说明。 其中， 第一多址方式为 OFDMA多址 方式或者 SC-FDMA多址方式； 第二多址方式为 OFDMA+CDMA多址方式或 者 SC-FDMA+CDMA多址方式； 第三多址方式为 OFDMA+IDMA多址方式或 者 SC-FDMA+IDMA多址方式。本发明实施例中以第一多址方式为 OFDMA多 址方式、 第二多址方式为 OFDMA+CDMA 多址方式、 第三多址方式为 OFDMA+IDMA多址方式为例进行说明。
相应的， 用户设备接收基站发送的用于配置多址方式选择范围的信令。 步骤 402 , 用户设备存储该信令配置的多址方式选择范围；
用户设备收到基站发送的用于配置多址方式选择范围的信令之后，存储基 站发送的信令所配置中的多址方式选择范围。
在另一种实现中， 多址方式选择范围也可以事先约定， 此时用户设备预先 存储多址方式选择范围， 该多址方式选择范围为事先约定的多址方式选择范围。
步骤 403, 基站按照预定划分方式生成至少两种多址方式与时频资源之间 的对应关系；
基站按照预定划分方式生成至少两种多址方式与时频资源之间的对应关 系； 该预定划分方式包括按照时域划分、 按照频域划分和按照时频域划分三种 方式中的任意一种。
请参考图 3a、图 3b和图 3c,其分别示出了本发明实施例中基站按照时分、 频分和时频分方式三种不同的划分方式下， 三种多址方式与时频资源之间的对 应关系的结构示意图。 由图 3a、 图 3b和图 3c可以看出基站提供的时分、 频分 和时频分方式三种不同的划分方式下， 三种多址方式和时频资源的对应关系。 对应关系。
步骤 404, 基站按照预定发送方式向用户设备发送至少两种多址方式与时 频资源之间的对应关系；
基站按照预定发送方式向用户设备发送至少两种多址方式与时频资源之 间的对应关系， 其中， 预定发送方式包括： 通过系统广播通知或者通过信令通 知。
步骤 405 , 用户设备获取至少两种多址方式与时频资源之间的对应关系； 基站按照预定发送方式向用户设备发送至少两种多址方式与时频资源之 间的对应关系之后， 用户设备可以接收基站按照预定发送方式发送的对应关系， 该预定发送方式包括： 通过系统广播通知或者通过信令通知。 然后用户设备可 以存储该对应关系。
需要补充说明的是， 用户设备获取至少两种多址方式与时频资源之间的对 应关系不局限于接收基站发送的对应关系这一种途径。在事先约定至少两种多 址方式与时频资源之间的对应关系场景下， 用户设备可以预先存储至少两种多 址方式与时频资源之间的对应关系； 然后在需要使用时， 获取预先存储的对应 关系， 该对应关系为事先约定的对应关系。
步骤 406, 用户设备根据预定条件在至少两种多址方式中选择出一种多址 方式作为指定多址方式；
由于三种多址方式分别具有各自的优点， 比如， OFDMA 多址方式具有 高速率的优点； OFDMA+CDMA 多址方式具有覆盖范围广的优点； OFDMA+IDMA多址方式具有适合传输大量小数据包的优点。用户设备可以根 据预定条件来选择最合适的多址方式。 具体来讲：
当用户设备需要高速率的优点时， 选择第一多址方式， 比如， 若该预定条 件包括业务类型的 QOS优先级， 则在业务类型的 QOS ( Quality of Service, 服 务质量）优先级较高时选择第一多址方式作为指定多址方式。
当用户设备需要覆盖范围广的优点时， 选择第二多址方式， 比如， 若该预 定条件包括信号强度， 则在信号强度低于第一预设阈值时， 选择第二多址方式 作为指定多址方式。
当用户设备需要传输大量小数据包时， 选择第三多址方式， 比如， 若该预 定条件包括业务类型中数据块的大小， 则在业务类型中传输的数据块大小小于 第四预设阈值时， 选择第三多址方式作为指定多址方式。
在本实施例中， 预定条件包括多址方式选择范围， 则用户设备只能在多址 方式选择范围内选择一种多址方式作为指定多址方式。
步骤 407, 用户设备采用指定多址方式在指定多址方式所对应的时频资源 上向基站发送上行数据；
用户设备采用指定多址方式在指定多址方式所对应的时频资源上向基站 发送上行数据。
相应的，基站接收用户设备采用指定多址方式在指定多址方式所对应的时 频资源上发送的上行数据。
步骤 408, 基站查询与用户设备最近一次所使用的指定多址方式所对应的 相应多址方式；
通常情况下， 用户设备向基站发送上行数据的多址方式不会改变， 但是如 果用户设备所处的环境有所变化， 或者对通信系统的要求有所变化， 通信过程 中， 用户设备向基站发送上行数据的多址方式发送了改变， 那么基站接收用户 设备采用指定多址方式在指定多址方式所对应的时频资源上发送的上行数据 之后， 查询与用户设备最近一次所使用的指定多址方式所对应的相应多址方式。 比如， 用户设备最近一次所使用的指定多址方式为第一种多址方式， 则基站查 询到的相应多址方式即为第一种多址方式。 在步骤之前， 基站可以存储指定多 址方式与相应多址方式之间的——对应关系， 该——对应关系可以包括： 若指 定多址方式为第一多址方式， 则相应多址方式为第一多址方式； 若指定多址方 式为第二多址方式， 则相应多址方式为第二多址方式； 若指定多址方式为第三 多址方式， 则相应多址方式为第一多址方式、 第二多址方式和第三多址方式中 的任意一种。
步骤 409, 基站采用查询到的相应多址方式在相应多址方式所对应的时频 资源上向用户设备发送下行数据；
基站在接收到用户设备采用指定多址方式在指定多址方式所对应的时频 资源上发送的上行数据之后， 查询与用户设备最近一次所使用的指定多址方式 所对应的相应多址方式， 采用与指定多址方式对应的相应多址方式在相应多址 方式所对应的时频资源上向用户设备发送下行数据。 比如， 用户设备最近一次 所使用的指定多址方式为第一种多址方式， 那么基站查询到的相应多址方式即 为第一种多址方式， 则基站采用查询到的第一种多址方式在第一种多址方式所 对应的时频资源上向用户设备发送下行数据。
相应的， 用户设备接收基站采用相应多址方式在相应多址方式所对应的时 频资源上发送的下行数据。
步骤 410, 用户设备在接收到基站发送的下行数据之后向基站发送接收反 馈；
用户设备在接收到基站发送的下行数据之后向基站发送接收反馈； 该接收 反馈用于标识用户设备已收到基站发送的下行数据。
相应的， 基站接收用户设备发送的接收反馈。
步骤 411 , 若基站未接收到用户设备对下行数据的接收反馈， 则采用至少 两种多址方式中与相应多址方式不同的其它多址方式重新向用户设备发送下 行数据；
通信正常的情况下， 基站向用户设备发送下行数据后， 会收到用户设备发 送的接收反馈， 若基站未接收到用户设备对下行数据的接收反馈， 则说明用户 设备没有收到基站发送的下行数据， 那么基站则采用第一多址方式、 第二多址 方式和第三多址方式中与相应多址方式不同的其它多址方式重新向用户设备 发送下行数据； 比如， 若相应多址方式为第一种多址方式， 则如果基站未接收 到用户设备对下行数据的接收反馈， 则采用第二多址方式在第二多址方式所对 应的时频资源上重新向用户设备发送下行数据， 若仍未接收到用户设备对下行 数据的接收反馈， 则采用第三多址方式在第三多址方式所对应的时频资源上重 新向用户设备发送下行数据； 直至收到用户设备对下行数据的接收反馈。
步骤 412, 用户设备每隔预定时间间隔判断当前所采用的指定多址方式是 否仍然符合预定条件；
由于用户设备可能处于移动状态， 每隔一段时间可能所处的环境不一样， 或者用户设备通信过程中出现了阻碍通信的因素， 以至于出现不再满足预定条 件的情况， 所以用户设备每隔预定时间间隔判断当前所采用的指定多址方式是 否仍然符合预定条件。
若判断结果为当前所采用的指定多址方式仍然符合预定条件， 则维持当前 所采用的指定多址方式保持不变；
步骤 403 ,若判断结果为当前所采用的指定多址方式已经不符合预定条件， 则重新根据预定条件在至少两种多址方式中选择出一种多址方式作为指定多 址方式。
综上所述， 本实施例提供的通信方法， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 还通过每隔固定时间检查 当前所使用多址方式是否仍旧满足预定条件来判断是否需要改变多址方式，从 而更为优选地保障了通信过程中的通信质量。 下述为本发明装置实施例， 可以用于执行本发明方法实施例。 对于本发明 装置实施例中未披露的技术细节， 请参照本发明方法实施例。 请参考图 5 , 其示出了本发明一个实施例提供的通信系统的结构示意图。 该通信系统， 包括： 基站 510和用户设备 550。
所述基站 510, 包括： 上行接收模块 512和下行发送模块 514。
所述上行接收模块 512, 接收用户设备采用指定多址方式在所述指定多址 方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设备 根据预定条件在至少两种多址方式中选择出的一种多址方式。 所述下行发送模块 514, 用于采用相应多址方式在所述相应多址方式所对 应的时频资源向所述用户设备发送下行数据， 所述相应多址方式是根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述上行接收模块 512接 收到的所述指定多址方式相关联的一种多址方式；
所述用户设备 550, 包括： 关系获取模块 552、 方式选择模块 554、 上行发 送模块 556和下行接收模块 558。
所述关系获取模块 552, 用于获取至少两种多址方式与时频资源之间的对 应关系。
所述方式选择模块 554, 用于根据预定条件在所述关系获取模块 554获取 到的所述至少两种多址方式中选择出一种多址方式作为指定多址方式。
所述上行发送模块 556, 用于采用所述方式选择模块 554选择的所述指定 多址方式在所述指定多址方式所对应的时频资源上向所述基站发送上行数据。
所述下行接收模块 558, 用于接收所述基站采用相应多址方式在所述相应 多址方式所对应的时频资源上发送的下行数据， 所述相应多址方式是所述基站 根据预先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多 址方式相关联的一种多址方式。
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
综上所述， 本实施例提供的通信系统， 通过基站接收用户设备采用指定多 址方式在指定多址方式所对应的时频资源上发送的上行数据， 指定多址方式为 用户设备根据预定条件在至少两种多址方式中选择出的一种多址方式； 采用相 应多址方式在相应多址方式所对应的时频资源向用户设备发送下行数据，相应 多址方式是根据预先存储的对应关系在至少两种多址方式中查询到的与所述 指定多址方式相关联的一种多址方式； 解决了在同一通信系统中采用一种多址 方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通信系统可以 同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的需求的效果。 请参考图 6, 其示出了本发明另一个实施例中提供的通信系统的结构示意 图。 该通信系统， 包括： 基站 610和用户设备 650。
所述基站 610, 包括： 关系生成模块 611、 关系发送模块 612、 上行接收模 块 613、 存储关系模块 614和下行发送模块 615。
所述关系生成模块 611 , 用于按照预定划分方式生成所述至少两种多址方 式与所述时频资源之间的对应关系； 其中， 所述预定划分方式包括按照时域划 分、 按照频域划分和按照时频域划分三种方式中的任意一种。 其中， 所述第一 多址方式为 OFDMA多址方式或者 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+CDMA多址方式或者 SC-FDMA+CDMA多址方式； 所述第三多址方 式为 OFDMA+IDMA多址方式或者 SC-FDMA+IDMA多址方式。
所述关系发送模块 612, 用于按照预定发送方式向所述用户设备发送所述 关系生成模块 611 生成的至少两种多址方式与所述时频资源之间的对应关系； 其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
所述上行接收模块 613, 用于接收所述用户设备采用指定多址方式在所述 指定多址方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述 用户设备根据预定条件在所述至少两种多址方式中选择出的一种多址方式。
所述存储关系模块 614, 用于存储所述指定多址方式与所述相应多址方式 之间的——对应关系， 所述——对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
所述下行发送模块 615, 用于采用所述相应多址方式在所述相应多址方式 所对应的时频资源上向所述用户设备发送下行数据， 所述相应多址方式是根据 预先存储的对应关系在所述至少两种多址方式中查询到的与所述上行接收模 块 613接收到的所述指定多址方式相关联的一种多址方式。
所述用户设备 650, 包括： 关系获取模块 652、 方式选择模块 654、 上行发 送模块 656和下行接收模块 658。
所述关系获取模块 652, 用于获取至少两种多址方式与时频资源之间的对 应关系。
所述方式选择模块 654, 用于根据预定条件在所述第一多址方式、 第二多 址方式和第三多址方式中选择出一种多址方式作为指定多址方式。所述预定条 件包括业务类型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址 方式选择范围中的一种或者一种以上的组合。
具体地讲， 所述方式选择模块 654, 具体包括： 第一选择单元 654a、 第二 选择单元 654b、 第三选择单元 654c和第四选择单元 654d中的至少一个。
所述第一选择单元 654a, 用于若所述预定条件包括业务类型的 QOS优先 级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所述 指定多址方式；
所述第二选择单元 654b,用于若所述预定条件包括信号强度， 则在所述信 号强度低于第一预设阈值时， 选择所述第二多址方式作为所述指定多址方式； 所述第三选择单元 654c,用于若所述预定条件包括业务类型中数据块的大 小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第 三多址方式作为所述指定多址方式；
所述第四选择单元 654d,用于若所述预定条件包括多址方式选择范围， 则 在所述多址方式选择范围所限定的可选范围中选择出一种多址方式作为所述 指定多址方式。
所述上行发送模块 656, 用于采用所述方式选择模块 654选择的所述指定 多址方式在所述指定多址方式所对应的时频资源上向所述基站发送上行数据。
所述下行接收模块 658, 用于接收所述基站采用相应多址方式在所述相应 多址方式所对应的时频资源上发送的下行数据， 所述相应多址方式是所述基站 根据预先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多 址方式相关联的一种多址方式。
综上所述， 本实施例提供的通信系统， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 请参考图 7, 其示出了本发明另一个实施例中提供的通信系统的结构示意 图。 该通信系统， 包括： 基站 710和用户设备 750。
所述基站 710, 包括： 信令发送模块 711、 关系生成模块 712、 关系发送模 块 713、 上行接收模块 714、 存储关系模块 715、 下行发送模块 716、 反馈接收 模块 717和重发模块 718。
信令发送模块 711 , 用于向所述用户设备发送用于配置多址方式选择范围 的信令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种 多址方式中选择多址方式时的可选范围。 所述至少两种多址方式包括第一多址 方式、 第二多址方式和第三多址方式中的任意两种或者全部三种， 所述第一多 址方式为正交频分复用多址接入 OFDMA 多址方式或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+码分多址接入 CDMA多 址方式或者 SC-FDMA +CDMA多址方式；所述第三多址方式为 OFDMA+交织 多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方式。
所述关系生成模块 712, 用于按照预定划分方式生成所述至少两种多址方 式与所述时频资源之间的对应关系； 其中， 所述预定划分方式包括按照时域划 分、 按照频域划分和按照时频域划分三种方式中的任意一种。
所述关系发送模块 713, 用于按照预定发送方式向所述用户设备发送所述 至少两种多址方式与所述时频资源之间的对应关系； 其中， 所述预定发送方式 包括： 通过系统广播通知或者通过信令通知。
所述上行接收模块 714, 用于接收所述用户设备采用指定多址方式在所述 指定多址方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述 用户设备根据预定条件在所述至少两种多址方式中选择出的一种多址方式。
所述存储关系模块 715, 用于存储所述指定多址方式与所述相应多址方式 之间的——对应关系， 所述——对应关系， 包括： 若所述指定多址方式为所述 第一多址方式， 则所述相应多址方式为所述第一多址方式； 若所述指定多址方 式为所述第二多址方式， 则所述相应多址方式为所述第二多址方式； 若所述指 定多址方式为所述第三多址方式， 则所述相应多址方式为所述第一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
所述下行发送模块 716, 用于采用所述相应多址方式在所述相应多址方式 所对应的时频资源上向所述用户设备发送下行数据， 所述相应多址方式是根据 所述存储关系模块 715预先存储的对应关系在所述至少两种多址方式中查询到 的与所述上行接收模块 714接收到的所述指定多址方式相关联的一种多址方式。
具体地讲， 所述下行发送模块 716, 具体包括： 查询单元 716a和发送单元 716b。
所述查询单元 716a,用于查询与所述用户设备最近一次所使用的指定多址 方式所对应的相应多址方式；
所述发送单元 716b, 用于采用所述查询单元 716a查询到的所述相应多址 方式在所述相应多址方式所对应的时频资源上向所述用户设备发送下行数据。
所述反馈接收模块 718, 用于接收所述用户设备发送的接收反馈。
所述重发模块 718, 用于若所述反馈接收模块 717未接收到所述用户设备 对所述下行数据的接收反馈， 则采用所述至少两种多址方式中与所述相应多址 方式不同的其它多址方式所对应的时频资源重新向所述用户设备发送下行数 据。
所述用户设备 750, 包括： 约定存储模块 751、 信令接收模块 752、 存储模 块 753、 关系获取模块 754、 方式选择模块 755、 上行发送模块 756、 下行接收 模块 757、 反馈发送模块 758、 重收模块 759、 判断模块 760、 维持模块 761和 重新选择模块 762。
所述约定存储模块 751 ,用于预先存储事先约定的所述多址方式选择范围。 所述信令接收模块 752, 用于接收所述基站发送的用于配置多址方式选择 范围的信令。
所述存储模块 753 , 用于存储所述信令接收模块 752接收到的所述基站发 送的信令所配置的多址方式选择范围。 需要说明的是， 用户设备 750包括预定 存储模块 751时， 可以不包括所述信令接收模块 752和存储模块 753； 用户设 备 750包括所述信令接收模块 752和存储模块 753时， 可以不包括预定存储模 块 751。
所述关系获取模块 754, 用于获取至少两种多址方式与时频资源之间的对 应关系。
具体的讲， 所述关系获取模块 754, 具体包括：
约定获取单元 754a, 用于获取预先存储的所述对应关系， 所述对应关系为 事先约定的对应关系；
或， 关系接收单元 754b,用于接收所述基站按照预定发送方式发送的所述 对应关系， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
所述方式选择模块 755 , 用于根据预定条件在所述关系获取模块 754获取 到的至少两种多址方式中选择出一种多址方式作为指定多址方式。所述预定条 件包括业务类型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址 方式选择范围中的至少一个。
具体地讲， 所述方式选择模块 755 , 具体包括：
第一选择单元 755a、 第二选择单元 755b、 第三选择单元 755c和第四选择 单元 755d中的至少一个；
所述第一选择单元 755a, 用于若所述预定条件包括业务类型的 QOS优先 级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所述 指定多址方式；
所述第二选择单元 755b,用于若所述预定条件包括信号强度， 则在所述信 号强度低于第一预设阈值时， 选择所述第二多址方式作为所述指定多址方式； 所述第三选择单元 755c,用于若所述预定条件包括业务类型中数据块的大 小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第 三多址方式作为所述指定多址方式；
所述第四选择单元 755d,用于若所述预定条件包括多址方式选择范围， 则 在所述约定存储模块 751或者存储模块 753中存储的多址方式选择范围所限定 的可选范围中选择出一种多址方式作为所述指定多址方式。
所述上行发送模块 756, 用于采用所述方式选择模块 755选择出的指定多 址方式在所述指定多址方式所对应的时频资源上向所述基站发送上行数据。
所述下行接收模块 757, 用于接收所述基站采用所述相应多址方式在所述 相应多址方式所对应的时频资源上发送的下行数据， 所述相应多址方式是所述 基站根据预先存储的对应关系在所述至少两种多址方式中查询到的与所述指 定多址方式相关联的一种多址方式。
所述反馈发送模块 758 , 用于在所述下行接收模块 757接收到下行数据之 后向所述基站发送接收反馈。
所述重收模块 759, 用于接收所述基站重新发送的下行数据， 所述重新发 送的下行数据是所述基站在未接收到所述用户设备对所述采用所述相应多址 方式在所述相应多址方式所对应的时频资源上发送的下行数据的接收反馈后， 采用所述至少两种多址方式中与所述相应多址方式不同的其它多址方式重新 向所述用户设备发送的。
所述判断模块 760, 用于每隔预定时间间隔判断当前所采用的指定多址方 式是否仍然符合所述预定条件。
所述维持模块 761 , 用于若所述判断模块 760的判断结果为当前所采用的 指定多址方式仍然符合所述预定条件， 则维持当前所采用的指定多址方式保持 不变。
所述重新选择模块 762, 用于若所述判断模块 760的判断结果为当前所采 用的指定多址方式已经不符合所述预定条件， 则重新根据所述预定条件在所述 至少两种多址方式中选择出一种多址方式作为指定多址方式。
综上所述， 本实施例提供的通信系统， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 还通过每隔固定时间检查 当前所使用多址方式是否仍旧满足预定条件来判断是否需要改变多址方式，从 而更为优选地保障了通信过程中的通信质量。 请参考图 8 ,其示出了本发明一个实施例中提供的通信系统的结构方框图。 该通信系统， 包括： 基站 810和用户设备 850。 所述基站 810, 包括： 处理器 811、 接收机 812和发送机 813。 所述接收机 812, 用于接收所述用户设备采用指定多址方式在所述指定多 址方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设 备 居预定条件在至少两种多址方式中选择出的一种多址方式；
所述发送机 813, 用于采用相应多址方式在所述相应多址方式所对应的时 频资源向所述用户设备发送下行数据， 所述相应多址方式是所述处理器 811根 据预先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多址 方式相关联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种，所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式；所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址 方式。
所述用户设备 850, 包括： 处理器 851、 发送机 852和接收机 853。
所述处理器 851 ,用于获取至少两种多址方式与时频资源之间的对应关系； 所述处理器 851 , 还用于根据预定条件在所述至少两种多址方式中选择出 一种多址方式作为指定多址方式；
所述发送机 852, 用于采用所述处理器 851选择出的所述指定多址方式在 所述指定多址方式所对应的时频资源上向所述基站发送上行数据；
所述接收机 853, 用于接收所述基站采用相应多址方式在所述相应多址方 式所对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先 存储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相 关联的一种多址方式。
综上所述， 本实施例提供的通信系统， 通过基站接收用户设备采用指定多 址方式在指定多址方式所对应的时频资源上发送的上行数据， 指定多址方式为 用户设备根据预定条件在至少两种多址方式中选择出的一种多址方式； 采用相 应多址方式在相应多址方式所对应的时频资源向用户设备发送下行数据，相应 多址方式是根据预先存储的对应关系在至少两种多址方式中查询到的与所述 指定多址方式相关联的一种多址方式； 解决了在同一通信系统中采用一种多址 方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通信系统可以 同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的需求的效果。 请参考图 9, 其示出了本发明另一个实施例中提供的通信系统的结构方框 图。 该通信系统， 包括： 基站 910和用户设备 950。
所述基站 910, 包括：处理器 911、接收机 912、存储器 913和发送机 914。 所述处理器 911 , 用于按照预定划分方式生成所述至少两种多址方式与所 述时频资源之间的对应关系； 其中， 所述预定划分方式包括按照时域划分、 按 照频域划分和按照时频域划分三种方式中的任意一种。 其中， 所述至少两种多 址方式包括第一多址方式、 第二多址方式和第三多址方式中的至少两种， 所述 第一多址方式为正交频分复用多址接入 OFDMA 多址方式或者单载波频分多 址接入 SC-FDMA 多址方式； 所述第二多址方式为 OFDMA+码分多址接入 CDMA 多址方式或者 SC-FDMA +CDMA 多址方式； 所述第三多址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方式。
所述发送机，还用于按照预定发送方式向所述用户设备发送所述至少两种 多址方式与所述时频资源之间的对应关系； 其中， 所述预定发送方式包括： 通 过系统广播通知或者通过信令通知。
所述接收机 912, 用于接收所述用户设备采用指定多址方式在所述指定多 址方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设 备 居预定条件在至少两种多址方式中选择出的一种多址方式。
所述存储器 913, 用于存储所述指定多址方式与所述相应多址方式之间的 一一对应关系， 所述——对应关系， 包括： 若所述指定多址方式为所述第一多 址方式， 则所述相应多址方式为所述第一多址方式； 若所述指定多址方式为所 述第二多址方式， 则所述相应多址方式为所述第二多址方式； 若所述指定多址 方式为所述第三多址方式， 则所述相应多址方式为所述第一多址方式、 所述第 二多址方式和所述第三多址方式中的任意一种。
所述发送机 914, 用于采用相应多址方式在所述相应多址方式所对应的时 频资源向所述用户设备发送下行数据， 所述相应多址方式是所述处理器根据所 述存储器 913预先存储的对应关系在所述至少两种多址方式中查询到的与所述 指定多址方式相关联的一种多址方式。
所述用户设备 950, 包括： 处理器 951、 发送机 952和接收机 953。
所述处理器 951 ,用于获取至少两种多址方式与时频资源之间的对应关系。 所述处理器 951 , 还用于根据预定条件在所述至少两种多址方式中选择出 一种多址方式作为指定多址方式。
具体来讲，所述处理器 951 ,具体用于若所述预定条件包括业务类型的 QOS 优先级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为 所述指定多址方式； 所述处理器 951 , 还具体用于若所述预定条件包括信号强 度， 则在所述信号强度低于第一预设阈值时， 选择所述第二多址方式作为所述 指定多址方式； 所述处理器 951 , 还具体用于若所述预定条件包括业务类型中 数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第三多址方式作为所述指定多址方式； 所述处理器 951 , 还具体用于 若所述预定条件包括多址方式选择范围， 则在所述多址方式选择范围所限定的 可选范围中选择出一种多址方式作为所述指定多址方式。
所述发送机 952, 用于采用所述处理器 951选择的所述指定多址方式在所 述指定多址方式所对应的时频资源上向所述基站发送上行数据。
所述接收机 953 , 用于接收所述基站采用相应多址方式在所述相应多址方 式所对应的时频资源上发送的下行数据， 所述相应多址方式是所述基站根据预 先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式 相关联的一种多址方式。
综上所述， 本实施例提供的通信系统， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 请参考图 10,其示出了本发明另一个实施例中提供的通信系统的结构方框 图。 该通信系统， 包括： 基站 1010和用户设备 1050。
所述基站 1010, 包括： 发送机 1011、 处理器 1012、 接收机 1013和存储器 1014。
所述发送机 1011 ,用于向所述用户设备发送用于配置多址方式选择范围的 信令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种多 址方式中选择多址方式时的可选范围。 其中， 所述第一多址方式为 OFDMA多 址方式或者 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+CDMA多址 方式或者 SC-FDMA+CDMA多址方式； 所述第三多址方式为 OFDMA+IDMA 多址方式或者 SC-FDMA+IDMA多址方式。
所述处理器 1012,还用于按照预定划分方式生成所述至少两种多址方式与 所述时频资源之间的对应关系； 其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域划分三种方式中的任意一种。
所述发送机 1011还用于按照预定发送方式向所述用户设备发送所述至少 两种多址方式与所述时频资源之间的对应关系；其中，所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
所述接收机 1013 ,用于接收所述用户设备采用指定多址方式在所述指定多 址方式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设 备根据预定条件在所述至少两种多址方式中选择出的一种多址方式。
所述存储器 1014,用于存储所述指定多址方式与所述相应多址方式之间的 一一对应关系， 所述——对应关系， 包括： 若所述指定多址方式为所述第一多 址方式， 则所述相应多址方式为所述第一多址方式； 若所述指定多址方式为所 述第二多址方式， 则所述相应多址方式为所述第二多址方式； 若所述指定多址 方式为所述第三多址方式， 则所述相应多址方式为所述第一多址方式、 所述第 二多址方式和所述第三多址方式中的任意一种。
所述发送机 1011 ,还用于采用相应多址方式在所述相应多址方式所对应的 时频资源上向所述用户设备发送下行数据， 所述相应多址方式是所述处理器根 据预先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多址 方式相关联的一种多址方式。
具体地讲，所述处理器 1012,还用于查询与所述用户设备最近一次所使用 的指定多址方式所对应的相应多址方式； 所述发送机 1011 , 具体用于采用所述 处理器 1012查询到的所述相应多址方式在所述相应多址方式所对应的时频资 源向所述用户设备发送下行数据。
所述接收机 1013 , 还用于接收所述用户设备发送的接收反馈。
所述发送机 1011 , 用于若所述接收机 1013未接收到所述用户设备对所述 下行数据的接收反馈， 则采用所述至少两种多址方式中与所述相应多址方式不 同的其它多址方式所对应的时频资源重新向所述用户设备发送下行数据。
所述用户设备 1050, 包括： 接收机 1051、 存储器 1052、 处理器 1053和发 送机 1054。
所述存储器 1052,用于预先存储事先约定的所述多址方式选择范围。所述 多址方式选择范围为所述用户设备根据业务类型在所述至少两种多址方式中 选择多址方式时的可选范围。
或者，所述接收机 1051 ,用于接收所述基站发送的用于配置多址方式选择 范围的信令； 所述存储器 1052, 还用于存储所述接收机 1051接收到的所述基 站发送的信令所配置的多址方式选择范围。
所述处理器 1053 ,用于获取至少两种多址方式与时频资源之间的对应关系。 具体来讲， 所述处理器 1053 , 具体用于获取预先存储的所述对应关系， 所述对 应关系为事先约定的对应关系； 或， 所述处理器 1053 , 还具体用于控制所述接 收机 1051接收所述基站按照预定发送方式发送的所述对应关系， 所述预定发 送方式包括： 通过系统广播通知或者通过信令通知。
所述处理器 1053 ,还用于根据预定条件在所述至少两种多址方式中选择出 一种多址方式作为指定多址方式。所述预定条件包括业务类型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中的一种或者一种以 上的组合。
具体来讲， 所述处理器 1053 , 具体用于若所述预定条件包括业务类型的 QOS优先级， 则在所述业务类型的 QOS优先级较高时选择所述第一多址方式 作为所述指定多址方式； 所述处理器 1053 ,具体还用于若所述预定条件包括信 号强度， 则在所述信号强度低于第一预设阈值时， 选择所述第二多址方式作为 所述指定多址方式； 所述处理器 1053 ,具体还用于若所述预定条件包括业务类 型中数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值 时， 选择所述第三多址方式作为所述指定多址方式； 所述处理器 1053 , 具体还 用于若所述预定条件包括多址方式选择范围， 则在所述存储器 1052存储的多 址方式选择范围所限定的可选范围中选择出一种多址方式作为所述指定多址 方式。
所述发送机 1054, 用于采用所述处理器 1053选择出的所述指定多址方式 所对应的时频资源向所述基站发送上行数据。
所述接收机 1051 ,还用于接收所述基站采用相应多址方式在所述相应多址 方式所对应的时频资源上发送的下行数据， 所述相应多址方式是所述基站根据 预先存储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方 式相关联的一种多址方式。
所述发送机 1054, 还用于在所述接收机 1051接收到下行数据之后向所述 基站发送接收反馈。
所述接收机 1051 ,还用于接收所述基站重新发送的下行数据，所述重新发 送的下行数据是所述基站在未接收到所述用户设备对所述采用所述相应多址 方式在所述相应多址方式所对应的时频资源上发送的下行数据的接收反馈后， 采用所述至少两种多址方式中与所述相应多址方式不同的其它多址方式重新 向所述用户设备发送的。
所述处理器 1053 ,还用于每隔预定时间间隔判断当前所采用的指定多址方 式是否仍然符合所述预定条件。
所述处理器 1053 ,还用于若判断当前所采用的指定多址方式仍然符合预定 条件， 维持当前所采用的指定多址方式保持不变。
所述处理器 1053 ,还用于若判断当前所采用的指定多址方式已经不符合预 定条件， 则重新根据预定条件在所述至少两种多址方式中选择出一种多址方式 作为指定多址方式。
综上所述， 本实施例提供的通信系统， 通过用户设备获取至少两种多址方 式与时频资源的对应关系； 基站接收用户设备采用指定多址方式在指定多址方 式所对应的时频资源上发送的上行数据； 基站采用相应多址方式在相应多址方 式所对应的时频资源上向用户设备发送下行数据； 解决了在同一通信系统中采 用一种多址方式无法同时满足不同用户设备的需求的问题； 达到了在同一个通 信系统可以同时提供多种多址方式供用户设备选择， 能够满足不同用户设备的 需求的效果。还通过基站预先存储指定多址方式与相应多址方式之间的——对 应关系， 使得基站在接收到用户设备发送的上行数据之后， 能够根据预先存储 的——对应关系， 采用和指定多址方式相关联的相应多址方式在相应多址方式 所对应的时频资源上向用户设备发送下行数据， 解决了基站采用用户设备不能 识别的方式发送下行数据导致通信中断的问题， 达到了在不显著增加用户设备 的设备复杂度的前提下， 保障通信过程通畅的效果。 还通过每隔固定时间检查 当前所使用多址方式是否仍旧满足预定条件来判断是否需要改变多址方式，从 而更为优选地保障了通信过程中的通信质量。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成， 也可以通过程序来指令相关的硬件完成， 所述的程序可以存储 于一种计算机可读存储介质中， 上述提到的存储介质可以是只读存储器， 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的 精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。

Claims

权利要求书
1、 一种通信方法， 用于基站侧， 其特征在于， 所述方法包括：
接收用户设备采用指定多址方式在所述指定多址方式所对应的时频资源上 发送的上行数据， 所述指定多址方式为所述用户设备根据预定条件在至少两种 多址方式中选择出的一种多址方式；
采用相应多址方式在所述相应多址方式所对应的时频资源上向所述用户设 备发送下行数据， 所述相应多址方式是根据预先存储的对应关系在所述至少两 种多址方式中查询到的与所述指定多址方式相关联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式； 所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方 式。
2、 根据权利要求 1所述的方法， 其特征在于， 所述接收用户设备采用指定 多址方式在所述指定多址方式所对应的时频资源上发送的上行数据之前， 还包 括：
按照预定发送方式向所述用户设备发送所述至少两种多址方式与所述时频 资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
3、 根据权利要求 2所述的方法， 其特征在于， 所述按照预定发送方式向所 述用户设备发送所述至少两种多址方式与所述时频资源之间的对应关系之前， 还包括：
按照预定划分方式生成所述至少两种多址方式与所述时频资源之间的对应 关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
4、 根据权利要求 1至 3任一所述的方法， 其特征在于， 所述采用相应多址 方式在所述相应多址方式所对应的时频资源向所述用户设备发送下行数据之前 还包括：
存储所述指定多址方式与所述相应多址方式之间的——对应关系， 所述一 一对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
5、 根据权利要求 1至 4任一所述的方法， 其特征在于， 所述采用相应多址 方式在所述相应多址方式所对应的时频资源向所述用户设备发送下行数据， 包 括：
查询与所述用户设备最近一次所使用的指定多址方式相关联的相应多址方 式；
采用查询到的所述相应多址方式在所述相应多址方式所对应的时频资源上 向所述用户设备发送下行数据。
6、 根据权利要求 1至 5任一所述的方法， 其特征在于， 所述采用相应多址 方式在所述相应多址方式所对应的时频资源向所述用户设备发送下行数据之后 还包括：
若未接收到所述用户设备对所述下行数据的接收反馈， 则采用所述至少两 种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户设备发 送下行数据。
7、 根据权利要求 1至 6任一所述的方法， 其特征在于， 所述预定条件包括 多址方式选择范围， 所述向用户设备提供对应关系之前， 还包括：
向所述用户设备发送用于配置多址方式选择范围的信令， 所述多址方式选 择范围为所述用户设备根据预定条件在所述至少两种多址方式中选择多址方式 时的可选范围。
8、 一种通信方法， 用于用户设备侧， 其特征在于， 所述方法包括： 获取至少两种多址方式与时频资源之间的对应关系；
根据预定条件在所述至少两种多址方式中选择出一种多址方式作为指定多 址方式；
采用所述指定多址方式在所述指定多址方式所对应的时频资源上向所述基 站发送上行数据；
接收所述基站采用相应多址方式在所述相应多址方式所对应的时频资源发 送的下行数据， 所述相应多址方式是所述基站根据预先存储的对应关系在所述 至少两种多址方式中查询到的与所述指定多址方式相关联的一种多址方式； 所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式； 所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方 式。
9、 根据权利要求 8所述的方法， 其特征在于， 所述获取至少两种多址方式 与时频资源之间的对应关系， 包括：
获取预先存储的所述对应关系， 所述对应关系为事先约定的对应关系； 或，
接收所述基站按照预定发送方式发送的所述对应关系， 所述预定发送方式 包括： 通过系统广播通知或者通过信令通知。
10、 根据权利要求 8所述的方法， 其特征在于， 所述预定条件包括业务类 型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范围中 的至少一种， 所述根据预定条件在所述至少两种方式中选择出一种多址方式作 为指定多址方式， 包括：
若所述预定条件包括业务类型的 QOS优先级， 则在所述业务类型的 QOS 优先级较高时选择所述第一多址方式作为所述指定多址方式； 若所述预定条件包括信号强度， 则在所述信号强度低于第一预设阈值时， 选择所述第二多址方式作为所述指定多址方式；
若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输 的数据块大小小于第四预设阈值时， 选择所述第三多址方式作为所述指定多址 方式；
若所述预定条件包括多址方式选择范围， 则在所述多址方式选择范围所限 定的可选范围中选择出一种多址方式作为所述指定多址方式。
11、 根据权利要求 8至 10任一所述的方法， 其特征在于， 所述根据预定条 件在所述至少两种多址方式中选择出一种多址方式作为指定多址方式之前， 还 包括：
预先存储所述多址方式选择范围， 所述多址方式选择范围为事先约定的多 址方式选择范围；
或，
接收所述基站发送的用于配置多址方式选择范围的信令； 存储所述信令配 置的多址方式选择范围。
12、 根据权利要求 8至 11任一所述的方法， 其特征在于， 所述多址方式选 择范围中的可选多址方式为两种或者三种， 所述根据预定条件在所述至少两种 多址方式中选择出一种多址方式作为指定多址方式之后， 还包括：
每隔预定时间间隔判断当前所采用的指定多址方式是否仍然符合所述预定 条件；
若判断结果为当前所采用的指定多址方式仍然符合所述预定条件， 则维持 当前所采用的指定多址方式保持不变；
若判断结果为当前所采用的指定多址方式已经不符合所述预定条件， 则重 新根据所述预定条件在所述至少两种多址方式中选择出一种多址方式作为指定 多址方式。
13、 根据权利要求 8至 12任一所述的方法， 其特征在于， 所述接收所述基 站采用相应多址方式在所述相应多址方式所对应的时频资源发送的下行数据之 后， 还包括： 接收所述基站重新发送的下行数据， 所述重新发送的下行数据是所述基站 在未接收到所述用户设备对所述采用相应多址方式在所述相应多址方式所对应 的时频资源上发送的下行数据的接收反馈后， 采用所述至少两种多址方式中与 所述相应多址方式不同的其它多址方式重新向所述用户设备发送的。
14、 一种基站， 其特征在于， 所述基站， 包括：
上行接收模块， 用于接收用户设备采用指定多址方式在所述指定多址方式 所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设备根据 预定条件在至少两种多址方式中选择出的一种多址方式；
下行发送模块， 用于采用相应多址方式在所述相应多址方式所对应的时频 资源向所述用户设备发送下行数据， 所述相应多址方式是根据预先存储的对应 关系在所述至少两种多址方式中查询到的与所述上行接收模块接收到的所述指 定多址方式相关联的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式； 所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方 式。
15、 根据权利要求 14所述的基站， 其特征在于， 所述基站， 还包括： 关系发送模块；
所述关系发送模块， 用于按照预定发送方式向所述用户设备发送所述至少 两种多址方式与所述时频资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
16、 根据权利要求 15所述的基站， 其特征在于， 所述基站， 还包括： 关系生成模块， 用于按照预定划分方式生成所述至少两种多址方式与所述 时频资源之间的对应关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
17、 根据权利要求 14至 16任一所述的基站， 其特征在于， 所述基站， 还 包括：
存储关系模块， 用于存储所述指定多址方式与所述相应多址方式之间的一 一对应关系， 所述——对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
18、 根据权利要求 14至 17任一所述的基站， 其特征在于， 所述下行发送 模块， 包括：
查询单元和发送单元；
所述查询单元， 用于查询所述上行接收模块接收到的与所述用户设备最近 一次所使用的指定多址方式所关联的相应多址方式；
所述发送单元， 用于采用所述查询单元查询到的所述相应多址方式在所述 相应多址方式所对应的时频资源上向所述用户设备发送下行数据。
19、 根据权利要求 14至 18任一所述的基站， 其特征在于， 所述基站， 还 包括：
重发模块， 用于若未接收到所述用户设备对所述下行发送模块发送的所述 下行数据的接收反馈， 则采用所述关系提供模块提供的所述至少两种多址方式 中与所述相应多址方式不同的其它多址方式重新向所述用户设备发送下行数据。
20、 根据权利要求 14至 19任一所述的基站， 其特征在于， 所述预定条件 包括多址方式选择范围， 所述基站， 还包括：
信令发送模块， 用于向所述用户设备发送用于配置多址方式选择范围的信 令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种多址 方式中选择多址方式时的可选范围。
21、 一种用户设备， 其特征在于， 所述用户设备， 包括：
关系获取模块， 用于获取至少两种多址方式与时频资源之间的对应关系； 方式选择模块， 用于根据预定条件在所述关系获取模块获取到的所述至少 两种多址方式中选择出一种多址方式作为指定多址方式；
上行发送模块， 用于采用所述方式选择模块选择出的所述指定多址方式在 所述指定多址方式所对应的时频资源上向所述基站发送上行数据；
下行接收模块， 用于接收所述基站采用相应多址方式在所述相应多址方式 所对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关联 的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的任意两种或者全部三种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式或者单载波频分多址接入 SC-FDMA多址方式；所述第二多址 方式为 OFDMA+码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方 式； 所述第三多址方式为 OFDMA+交织多址接入 IDMA 多址方式或者 SC-FDMA+IDMA多址方式。
22、 根据权利要求 21 所述的用户设备， 其特征在于， 所述关系获取模块， 包括：
约定获取单元， 用于获取预先存储的所述对应关系， 所述对应关系为事先 约定的对应关系；
或，
关系接收单元， 用于接收所述基站按照预定发送方式发送的所述对应关系， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
23、 根据权利要求 21所述的用户设备， 其特征在于， 所述预定条件包括业 务类型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范 围中的至少一种， 所述方式选择模块， 包括：
第一选择单元、 第二选择单元、 第三选择单元和第四选择单元中的至少一 个； 所述第一选择单元， 用于若所述预定条件包括业务类型的 Q0S优先级， 则 在所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所述指定多址 方式；
所述第二选择单元， 用于若所述预定条件包括信号强度， 则在所述信号强 度低于第一预设阈值时 , 选择所述第二多址方式作为所述指定多址方式；
所述第三选择单元， 用于若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第三多 址方式作为所述指定多址方式；
所述第四选择单元， 用于若所述预定条件包括多址方式选择范围， 则在所 述多址方式选择范围所限定的可选范围中选择出一种多址方式作为所述指定多 址方式。
24、 根据权利要求 21至 23任一所述的用户设备， 其特征在于， 所述用户 设备， 还包括：
约定存储模块， 用于预先存储所述多址方式选择范围， 所述多址方式选择 范围为事先约定的多址方式选择范围；
或，
信令接收模块， 用于接收所述基站发送的用于配置多址方式选择范围的信 令； 存储模块， 用于存储所述信令接收模块接收到的所述信令配置的多址方式 选择范围。
25、 根据权利要求 21至 24任一所述的用户设备， 其特征在于， 所述多址 方式选择范围中的可选多址方式为两种或者三种， 所述用户设备， 还包括： 判断模块， 用于每隔预定时间间隔判断所述上行发送模块当前所采用的指 定多址方式是否仍然符合所述预定条件；
维持模块， 用于若所述判断模块的判断结果为当前所采用的指定多址方式 仍然符合所述预定条件， 则维持当前所采用的指定多址方式保持不变；
重新选择模块， 用于若所述判断模块的判断结果为当前所采用的指定多址 方式已经不符合所述预定条件， 则重新根据所述预定条件在所述至少两种多址 方式中选择出一种多址方式作为指定多址方式。
26、 根据权利要求 21至 25任一所述的用户设备， 其特征在于， 所述用户 设备， 还包括：
重收模块， 用于接收所述基站重新发送的下行数据， 所述重新发送的下行 数据是所述基站在未接收到所述用户设备对所述采用相应多址方式在所述相应 多址方式所对应的时频资源上发送的下行数据的接收反馈后， 采用所述至少两 种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户设备发 送的。
27、 一种通信系统， 其特征在于， 所述系统， 包括如权利要求 14至 20任 一所述的基站和权利要求 21至 26任一所述的用户设备。
28、 一种基站， 其特征在于， 所述基站， 包括：
处理器、 接收机和发送机；
所述接收机， 用于接收所述用户设备采用指定多址方式在所述指定多址方 式所对应的时频资源上发送的上行数据， 所述指定多址方式为所述用户设备根 据预定条件在至少两种多址方式中选择出的一种多址方式；
所述发送机， 用于采用相应多址方式在所述相应多址方式所对应的时频资 源向所述用户设备发送下行数据， 所述相应多址方式是所述处理器根据预先存 储的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关联 的一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式； 所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方 式。
29、 根据权利要求 28所述的基站， 其特征在于，
所述发送机， 还用于按照预定发送方式向所述用户设备发送所述至少两种 多址方式与所述时频资源之间的对应关系；
其中， 所述预定发送方式包括： 通过系统广播通知或者通过信令通知。
30、 根据权利要求 29所述基站， 其特征在于，
所述处理器， 还用于按照预定划分方式生成所述至少两种多址方式与所述 时频资源之间的对应关系；
其中， 所述预定划分方式包括按照时域划分、 按照频域划分和按照时频域 划分三种方式中的任意一种。
31、 根据权利要求 28至 30所述基站， 其特征在于， 所述基站， 还包括： 存储器， 用于存储所述指定多址方式与所述相应多址方式之间的——对应 关系， 所述——对应关系， 包括：
若所述指定多址方式为所述第一多址方式， 则所述相应多址方式为所述第 一多址方式；
若所述指定多址方式为所述第二多址方式， 则所述相应多址方式为所述第 二多址方式；
若所述指定多址方式为所述第三多址方式， 则所述相应多址方式为所述第 一多址方式、 所述第二多址方式和所述第三多址方式中的任意一种。
32、 根据权利要求 28至 31任一所述的基站， 其特征在于，
所述处理器， 还用于查询所述接收机接收到的与所述用户设备最近一次所 使用的指定多址方式所对应的相应多址方式；
所述发送机， 还用于采用所述处理器查询到的所述相应多址方式在所述相 应多址方式所对应的时频资源上向所述用户设备发送下行数据。
33、 根据权利要求 28至 32任一所述的基站， 其特征在于，
所述处理器， 还用于若所述接收机未接收到所述用户设备对所述下行数据 的接收反馈， 则控制所述发射机采用所述至少两种多址方式中与所述相应多址 方式不同的其它多址方式重新向所述用户设备发送下行数据。
34、 根据权利要求 28至 33任一所述的基站， 其特征在于， 所述预定条件 包括多址方式选择范围，
所述发送机， 还用于向所述用户设备发送用于配置多址方式选择范围的信 令， 所述多址方式选择范围为所述用户设备根据预定条件在所述至少两种多址 方式中选择多址方式时的可选范围。
35、 一种用户设备， 其特征在于， 所述用户设备， 包括：
处理器、 发送机和接收机；
所述处理器， 用于获取至少两种多址方式与时频资源之间的对应关系； 所述处理器， 还用于根据预定条件在所述至少两种多址方式中选择出一种 多址方式作为指定多址方式；
所述发送机， 用于采用所述处理器选择出的所述指定多址方式在所述指定 多址方式所对应的时频资源上向所述基站发送上行数据；
所述接收机， 用于接收所述基站采用相应多址方式在所述相应多址方式所 对应的时频资源发送的下行数据， 所述相应多址方式是所述基站根据预先存储 的对应关系在所述至少两种多址方式中查询到的与所述指定多址方式相关联的 一种多址方式；
所述至少两种多址方式包括第一多址方式、 第二多址方式和第三多址方式 中的至少两种， 所述第一多址方式为正交频分复用多址接入 OFDMA多址方式 或者单载波频分多址接入 SC-FDMA多址方式； 所述第二多址方式为 OFDMA+ 码分多址接入 CDMA多址方式或者 SC-FDMA +CDMA多址方式； 所述第三多 址方式为 OFDMA+交织多址接入 IDMA多址方式或者 SC-FDMA+IDMA多址方 式。
36、 根据权利要求 35所述的用户设备， 其特征在于，
所述处理器， 具体用于获取预先存储的所述对应关系， 所述对应关系为事 先约定的对应关系；
或，
所述处理器， 还具体用于控制所述接收机接收所述基站按照预定发送方式 发送的所述对应关系， 所述预定发送方式包括： 通过系统广播通知或者通过信 令通知。
37、 根据权利要求 35所述的用户设备， 其特征在于， 所述预定条件包括业 务类型的 QOS优先级、 信号强度、 业务类型中数据块的大小和多址方式选择范 围中的至少一种，
所述处理器， 具体用于若所述预定条件包括业务类型的 QOS优先级， 则在 所述业务类型的 QOS优先级较高时选择所述第一多址方式作为所述指定多址方 式；
所述处理器， 还具体用于若所述预定条件包括信号强度， 则在所述信号强 度低于第一预设阈值时 , 选择所述第二多址方式作为所述指定多址方式；
所述处理器， 还具体用于若所述预定条件包括业务类型中数据块的大小， 则在所述业务类型中传输的数据块大小小于第四预设阈值时， 选择所述第三多 址方式作为所述指定多址方式；
所述处理器， 还具体用于若所述预定条件包括多址方式选择范围， 则在所 述多址方式选择范围所限定的可选范围中选择出一种多址方式作为所述指定多 址方式。
38、 根据权利要求 35至 37任一所述的用户设备， 其特征在于， 所述用户 设备， 还包括：
存储器；
所述存储器， 用于预先存储所述多址方式选择范围， 所述多址方式选择范 围为事先约定的多址方式选择范围；
或， 所述接收机， 还用于接收所述基站发送的用于配置多址方式选择范围 的信令； 所述存储器， 还用于存储所述接收机接收到的所述信令配置的多址方 式选择范围。
39、 根据权利要求 35至 38任一所述的用户设备， 其特征在于， 所述多址 方式选择范围中的可选多址方式为两种或者三种，
所述处理器， 还用于每隔预定时间间隔判断所述发送机当前所采用的指定 多址方式是否仍然符合所述预定条件；
所述处理器， 还用于若判断结果为当前所采用的指定多址方式仍然符合所 述预定条件， 则维持当前所采用的指定多址方式保持不变；
所述处理器， 还用于若所述判断模块的判断结果为当前所采用的指定多址 方式已经不符合所述预定条件， 则重新根据所述预定条件在所述至少两种多址 方式中选择出一种多址方式作为指定多址方式。
40、 根据权利要求 35至 39任一所述的用户设备， 其特征在于， 所述接收机， 还用于接收所述基站重新发送的下行数据， 所述重新发送的 下行数据是所述基站在未接收到所述用户设备对所述采用相应多址方式在所述 相应多址方式所对应的时频资源发送的下行数据的接收反馈时， 采用所述至少 两种多址方式中与所述相应多址方式不同的其它多址方式重新向所述用户设备 发送的。
41、 一种通信系统， 其特征在于， 所述系统， 包括如权利要求 28至 34任 一所述的基站和权利要求 35至 40任一所述的用户设备。
PCT/CN2013/073142 2013-03-25 2013-03-25 通信方法、基站、用户设备和系统 WO2014153708A1 (zh)

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