WO2018082012A1 - Rrc消息的发送方法及装置 - Google Patents

Rrc消息的发送方法及装置 Download PDF

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Publication number
WO2018082012A1
WO2018082012A1 PCT/CN2016/104577 CN2016104577W WO2018082012A1 WO 2018082012 A1 WO2018082012 A1 WO 2018082012A1 CN 2016104577 W CN2016104577 W CN 2016104577W WO 2018082012 A1 WO2018082012 A1 WO 2018082012A1
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WIPO (PCT)
Prior art keywords
diversity
rrc
access network
network device
threshold
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PCT/CN2016/104577
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English (en)
French (fr)
Inventor
江小威
Original Assignee
北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201680001267.XA priority Critical patent/CN106797648B/zh
Priority to PCT/CN2016/104577 priority patent/WO2018082012A1/zh
Publication of WO2018082012A1 publication Critical patent/WO2018082012A1/zh
Priority to US16/400,202 priority patent/US10925117B2/en

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    • 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
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • 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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04W88/085—Access point devices with remote components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting a Radio Resource Control (RRC) message.
  • RRC Radio Resource Control
  • the RRC message is a signaling message required to establish, re-establish, maintain, and release an RRC connection between a User Equipment (UE) and an access network device.
  • the RRC message sent by the UE to the access network device is an uplink RRC message
  • the RRC message sent by the access network device to the UE is a downlink RRC message.
  • the RRC message is sent between the UE and the access network device, if the channel quality is poor, the RRC message transmission failure and the RRC message error rate are high.
  • Embodiments of the present disclosure provide a method and an apparatus for transmitting a radio resource control RRC message.
  • the technical solution is as follows:
  • the first aspect provides a method for transmitting a radio resource control RRC message, which is applied to a communication system in which a terminal establishes multiple connections with an access network device, and the method includes:
  • the terminal receives the RRC diversity configuration information sent by the access network device, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity.
  • the terminal determines whether to enable RRC diversity according to the RRC diversity configuration information, and the RRC diversity is a transmission mode in which the same uplink RRC message is sent through at least two connections.
  • the RRC diversity configuration information includes an enable indication and a diversity threshold
  • the terminal determines, according to the RRC diversity configuration information, whether to enable RRC diversity, including:
  • a connection for transmitting an uplink RRC message is determined according to the diversity threshold.
  • the access network device includes: at least two distributed units (DUs) in the fifth generation mobile communication system (5th-Generation, 5G) communication system; the diversity threshold includes the first point
  • the RRC diversity configuration information further includes: a DU list, where the DU list includes: a DU identifier that supports RRC diversity;
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection
  • the downlink channel quality of the first DU is less than the first diversity threshold, determining at least one of the second DUs as the target DU, or determining the first DU and the at least one second DU as the target DU, and the second DU is the DU
  • At least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the diversity threshold further includes a second diversity threshold
  • Determining at least one of the second DUs as the target DU includes:
  • each second DU Detecting whether the downlink channel quality of each second DU is greater than the second diversity threshold; when there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, determining one candidate second DU that is randomly selected as the target DU;
  • each second DU Detecting whether the downlink channel quality of each second DU is greater than a second diversity threshold; and when there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, determining the candidate second DU having the best downlink channel quality as the target DU.
  • the diversity threshold further includes a second diversity threshold
  • Determining the first DU and the at least one second DU as the target DU includes:
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold, and the RRC diversity configuration information further includes: a DU list, where the DU list includes: a DU identifier that supports RRC diversity ;
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • At least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the method further includes:
  • the first DU and the at least one second DU are determined as the target DU, and the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection. .
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a first diversity threshold;
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection
  • the downlink channel quality of the first DU is less than the first diversity threshold, determining at least one of the third DUs as the target DU, or determining the first DU and the at least one third DU as the target DU, and the third DU is supported.
  • the DU that sends the control plane message;
  • the at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the diversity threshold further includes a second diversity threshold
  • Determining at least one of the third DUs as the target DU includes:
  • each third DU Detecting whether the downlink channel quality of each third DU is greater than the second diversity threshold; when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, determining one candidate third DU that is randomly selected as the target DU;
  • each third DU Detecting whether the downlink channel quality of each third DU is greater than a second diversity threshold; when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, determining the candidate third DU having the best downlink channel quality as the target DU.
  • the diversity threshold further includes a second diversity threshold
  • Determining the first DU and the at least one third DU as the target DU includes:
  • each third DU Detecting whether the downlink channel quality of each third DU is greater than a second diversity threshold; when all thirds When the downlink channel quality of the DU is less than the second diversity threshold, the first DU and the at least one third DU are determined as the target DU.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold;
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • each third DU is greater than a second diversity threshold, and the third DU is a DU that supports sending a control plane message
  • a randomly selected candidate third DU is determined as the target DU, or the candidate having the best downlink channel quality is the third candidate.
  • DU is determined as the target DU;
  • the at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the method further includes:
  • the first DU and the at least one third DU are determined as the target DU, and the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection. .
  • the RRC diversity configuration information further includes: a maximum diversity number n;
  • the method also includes:
  • the first n connections with the best downlink channel quality are selected as the destination connection for transmitting the RRC message.
  • the RRC diversity configuration information includes an enable indication and an information element (IE) for indicating the target connection.
  • the method further includes:
  • the terminal sends an uplink reference signal to the access network device, where the uplink reference signal is used to measure the uplink channel quality of the connection;
  • the terminal determines, according to the RRC diversity configuration information, whether to enable RRC diversity, including:
  • a connection for transmitting an uplink RRC message is determined according to an information element for indicating a target connection.
  • the access network device includes: a first access network device belonging to the first communication system and belongs to the first a second access network device in the second communication system; the first access network device and the second access network device are connected, and the RRC diversity configuration information includes: an indication and a diversity threshold for enabling inter-network cooperative RRC diversity;
  • the terminal determines, according to the RRC diversity configuration information, whether to enable RRC diversity, including:
  • the first communication system is: one of a 5G communication system, a Long-Term Evolution (LTE) communication system, and a Wireless Local Area Networks (WLAN) communication system
  • the second communication system is: 5G.
  • Another of the communication system, the LTE communication system, and the WLAN communication system is: 5G.
  • the diversity threshold includes: a first diversity threshold and a second diversity threshold.
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • the threshold is less than the first diversity threshold, detecting whether the downlink channel quality of the second access network device is greater than the second diversity threshold;
  • the downlink channel quality of the second access network device is greater than the second diversity threshold, determining the first access network device and the second access network device as the target access network device;
  • At least two connections between the terminal and the target access network device are determined as connections for transmitting an uplink RRC message.
  • the diversity threshold includes: a relative diversity threshold
  • Determining a connection for sending an uplink RRC message according to the diversity threshold including:
  • the optimal first access network device is a first access network device when the terminal establishes an initial connection, or a first access network device that supports RRC diversity and has an optimal downlink channel quality, or supports sending a first access network device that sends a control plane message and has an optimal downlink channel quality;
  • the worst second access network device is a second access network device that supports RRC diversity and has the worst downlink channel quality, or, supports A second access network device that transmits control plane messages and has the worst downlink channel quality.
  • the RRC diversity configuration information includes a shutdown indication
  • the terminal determines, according to the RRC diversity configuration information, whether to enable RRC diversity, including:
  • the RRC diversity is turned off according to the shutdown indication.
  • the terminal receives the RRC diversity configuration information sent by the access network device, including:
  • the terminal receives the RRC connection reconfiguration message (RRC Connection Reconfiguration) sent by the access network device, and the RRC connection reconfiguration message carries the RRC diversity configuration information.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • a second aspect provides a method for transmitting a radio resource control RRC message, which is applied to a communication system in which a terminal establishes multiple connections with an access network device, and the method includes:
  • the access network device generates RRC diversity configuration information of the terminal, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity.
  • the access network device sends the RRC diversity configuration information to the terminal.
  • the RRC diversity configuration information is used to configure whether the terminal enables RRC diversity.
  • the RRC diversity is a transmission mode in which the same uplink RRC message is sent through at least two connections.
  • the RRC diversity configuration information includes:
  • the indication and the diversity threshold are enabled; the indication of the indication is used to indicate that the terminal enables RRC diversity; the diversity threshold is used to determine the radio bearer that sends the uplink RRC message;
  • the shutdown indication is used to instruct the terminal to turn off RRC diversity.
  • the RRC diversity configuration information further includes: a maximum diversity number n, where the maximum number of diversity n is a maximum number of connections used by the terminal to send the same uplink RRC message.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating the target connection, and the access network device, before the RRC diversity configuration information of the terminal is generated, further includes:
  • the access network device receives the uplink reference signal sent by the terminal;
  • the RRC diversity configuration information of the terminal device is generated by the access network device, including:
  • the access network device measures the uplink channel quality of the connection according to the uplink reference signal
  • the access network device determines the target connection according to the quality of the uplink channel
  • the access network device generates an RRC diversity configuration that carries the information element used to indicate the target connection. interest.
  • the RRC diversity configuration information includes:
  • Enabling an indication and diversity threshold of inter-network cooperative RRC diversity is used to instruct the terminal to enable inter-network cooperative RRC diversity between the first access network device and the second access network device; the diversity threshold It is used to determine a radio bearer that sends an uplink RRC message.
  • the access network device sends the RRC diversity configuration information to the terminal, including:
  • the access network device sends the RRC connection reconfiguration information to the terminal, and the RRC connection reconfiguration information carries the RRC diversity configuration information.
  • a third aspect provides a radio resource control RRC message sending apparatus, which is applied to a communication system in which a terminal establishes a multi-connection with an access network device, where the apparatus includes:
  • the receiving module is configured to receive RRC diversity configuration information sent by the access network device, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity.
  • the determining module is configured to determine whether to enable RRC diversity according to the RRC diversity configuration information, where the RRC diversity is a sending manner in which the same uplink RRC message is sent through at least two connections.
  • the RRC diversity configuration information includes an enable indication and a diversity threshold
  • Identify modules including:
  • a determining submodule configured to determine a connection for transmitting an uplink RRC message based on the diversity threshold.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a first diversity threshold, and the RRC diversity configuration information further includes: a DU list, where the DU list includes: a DU identifier that supports RRC diversity ;
  • the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection
  • the second DU is the DU The DU corresponding to the DU identifier in the list;
  • At least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the diversity threshold further includes a second diversity threshold
  • each second DU Detecting whether the downlink channel quality of each second DU is greater than the second diversity threshold; when there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, determining one candidate second DU that is randomly selected as the target DU;
  • each second DU Detecting whether the downlink channel quality of each second DU is greater than a second diversity threshold; and when there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, determining the candidate second DU having the best downlink channel quality as the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold, and the RRC diversity configuration information further includes: a DU list, where the DU list includes: a DU identifier that supports RRC diversity ;
  • the target DU When there is a candidate second DU whose downlink channel quality of the second DU is greater than the second diversity threshold, then one candidate second DU that is randomly selected is determined as the target DU, or the candidate with the best downlink channel quality is selected.
  • the second DU is determined as the target DU;
  • At least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the determining submodule is further configured to:
  • the first DU and the at least one second DU are determined as the target DU, and the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection. .
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a first diversity threshold;
  • the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection
  • the third DUs is determined as the target DU, or the first DU and the at least one third DU are determined as the target DU, and the third DU is supported.
  • At least two connections supporting the control plane message between the terminal and the target DU are determined as connections for transmitting the uplink RRC message.
  • the diversity threshold further includes a second diversity threshold
  • each third DU Detecting whether the downlink channel quality of each third DU is greater than the second diversity threshold; when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, determining one candidate third DU that is randomly selected as the target DU;
  • each third DU Detecting whether the downlink channel quality of each third DU is greater than a second diversity threshold; when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, determining the candidate third DU having the best downlink channel quality as the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold;
  • each third DU is greater than a second diversity threshold, and the third DU is a DU that supports sending a control plane message
  • one candidate third DU that is randomly selected is determined as the target DU, or the candidate with the best downlink channel quality is the third candidate.
  • DU is determined as the target DU;
  • the at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the determining submodule is configured to:
  • the first DU and the at least one third DU are determined as the target DU, and the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection. .
  • the RRC diversity configuration information further includes: a maximum diversity number n;
  • the device also includes:
  • a detecting module configured to detect whether the number of connections used to send the RRC message exceeds a maximum diversity number n;
  • the selection module is configured to select the first n connections with the best downlink channel quality as the destination connection for transmitting the RRC message if the maximum diversity number is exceeded.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection, and the apparatus further includes:
  • the sending module is configured to send an uplink reference signal to the access network device, where the uplink reference signal is used to measure the uplink channel quality of the connection;
  • Identify modules including:
  • a determining submodule configured to determine a connection for transmitting an uplink RRC message according to an information element for indicating a target connection.
  • the access network device comprises: a first access network device belonging to the first communication system and a second access network device belonging to the second communication system; the first access network device and the second access network device Connected, the RRC diversity configuration information includes: an indication of enabling inter-network cooperative RRC diversity and a diversity threshold;
  • the first communication system is one of a 5G communication system, an LTE communication system, and a WLAN communication system
  • the second communication system is another one of a 5G communication system, an LTE communication system, and a WLAN communication system.
  • the diversity threshold includes: a first diversity threshold and a second diversity threshold.
  • the first access network device is a first access network device or a first access network device that supports RRC diversity when the terminal establishes an initial connection;
  • the threshold is less than the first diversity threshold, detecting whether the downlink channel quality of the second access network device is greater than the second diversity threshold;
  • the downlink channel quality of the second access network device is greater than the second diversity threshold, determining the first access network device and the second access network device as the target access network device;
  • At least two connections between the terminal and the target access network device are selected as the connection for transmitting the uplink RRC message.
  • the diversity threshold includes: a relative diversity threshold
  • the optimal first access network device is a first access network device when the terminal establishes an initial connection, or a first access network device that supports RRC diversity and has an optimal downlink channel quality, or supports transmission control. a first access network device having a face message and having an optimal downlink channel quality; the worst second access network device being a second access network device supporting RRC diversity and having the worst downlink channel quality, or supporting transmission control A second access network device that has a face message and has the worst downlink channel quality.
  • the RRC diversity configuration information includes a shutdown indication
  • a determining module configured to turn off RRC diversity according to the shutdown indication.
  • the receiving module is configured to receive an RRC connection reconfiguration message sent by the access network device, where the RRC connection reconfiguration message carries the RRC diversity configuration information.
  • a fourth aspect provides a radio resource control RRC message sending apparatus, which is applied to a communication system in which a terminal establishes multiple connections with an access network device, where the apparatus includes:
  • a generating module configured to generate RRC diversity configuration information of the terminal, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity;
  • the sending module is configured to send RRC diversity configuration information, RRC diversity configuration information, to the terminal It is used to configure whether the terminal enables RRC diversity, and the RRC diversity is a sending manner in which the same uplink RRC message is sent through at least two connections.
  • the RRC diversity configuration information includes:
  • the indication and the diversity threshold are enabled; the indication of the indication is used to indicate that the terminal enables RRC diversity; the diversity threshold is used to determine the radio bearer that sends the uplink RRC message;
  • the shutdown indication is used to instruct the terminal to turn off RRC diversity.
  • the RRC diversity configuration information further includes: a maximum diversity number n, where the maximum number of diversity n is a maximum number of connections used by the terminal to send the same uplink RRC message.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection, and the apparatus further includes:
  • a receiving module configured to receive an uplink reference signal sent by the terminal
  • a measurement submodule configured to measure the uplink channel quality of the connection according to the uplink reference signal
  • a generating submodule is configured to generate an RRC diversity configuration message carrying an information element for indicating a target connection.
  • the RRC diversity configuration information includes:
  • Enabling an indication and diversity threshold of inter-network cooperative RRC diversity is used to instruct the terminal to enable inter-network cooperative RRC diversity between the first access network device and the second access network device; the diversity threshold It is used to determine a radio bearer that sends an uplink RRC message.
  • the sending module is configured to send RRC connection reconfiguration information to the terminal, where the RRC connection reconfiguration information carries RRC diversity configuration information.
  • a fifth aspect provides a radio resource control RRC message sending apparatus, where the apparatus is applied to a communication system in which a terminal establishes a connection with an access network device, and the apparatus includes:
  • a memory for storing executable instructions of the processor
  • processor is configured to:
  • RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity
  • RRC diversity is enabled according to the RRC diversity configuration information, and the RRC diversity is a transmission manner of transmitting the same uplink RRC message through at least two connections.
  • a device for transmitting a radio resource control RRC message which is applied to a communication system in which a terminal establishes multiple connections with an access network device, where the device includes:
  • a memory for storing executable instructions of the processor
  • processor is configured to:
  • RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity;
  • the RRC diversity configuration information is sent to the terminal, and the RRC diversity configuration information is used to configure whether the terminal enables RRC diversity.
  • the RRC diversity is a transmission mode in which the same uplink RRC message is sent through at least two connections.
  • a seventh aspect provides a radio resource control RRC message sending system, where the system includes: a terminal and an access network device;
  • the terminal includes the apparatus of the third aspect
  • the access network device comprises the apparatus of the fourth aspect.
  • the technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: determining, by using the RRC diversity configuration information sent by the access network device, that the RRC diversity is enabled according to the RRC diversity configuration information; the terminal may pass at least two connections after the RRC diversity is enabled.
  • the same uplink RRC message is sent, and the access network device combines and receives at least two identical uplink RRC messages, which can solve the problem that the RRC message is sent by only one connection in the related art, and when the channel quality is poor, the RRC message fails to be sent or
  • the problem that the RRC message has a high bit error rate achieves the effect of improving the success rate and transmission reliability of the RRC message transmission and reducing the bit error rate of the RRC message.
  • FIG. 1 is a schematic diagram of a communication system according to an exemplary embodiment
  • FIG. 2 is a schematic diagram of a communication system according to another exemplary embodiment
  • FIG. 3A is a flowchart of a method for sending an RRC message according to an exemplary embodiment
  • FIG. 3B is a flowchart of step 303 in FIG. 3A, according to an exemplary embodiment
  • 4A, 4C, 4D, 4F, 4G, 4H are flowcharts illustrating a manner of determining a connection for transmitting an uplink RRC message, according to an exemplary embodiment of the present disclosure
  • FIG. 4B is a schematic diagram of a terminal and target DU enabling RRC diversity according to an exemplary embodiment of the present disclosure
  • FIG. 4E is a schematic diagram of a terminal and target DU enabling RRC diversity according to another exemplary embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a method for transmitting an RRC message according to another exemplary embodiment
  • FIG. 6 is a flowchart of a method for transmitting an RRC message according to another exemplary embodiment
  • FIG. 7A is a flowchart of a method for transmitting an RRC message according to another exemplary embodiment
  • FIG. 7B is a flowchart of step 703 of FIG. 7A, according to an exemplary embodiment
  • 7C, 7E are flowcharts showing step 703b of FIG. 7B, according to an exemplary embodiment
  • FIG. 7D is a schematic diagram of a terminal and a target access network device enabling RRC diversity according to an exemplary embodiment of the present disclosure
  • FIG. 8 is a block diagram of an apparatus for transmitting an RRC message according to an exemplary embodiment
  • FIG. 9 is a block diagram of an apparatus for transmitting an RRC message according to another exemplary embodiment.
  • FIG. 10 is a block diagram of an apparatus for transmitting an RRC message according to another exemplary embodiment
  • FIG. 11 is a block diagram of an apparatus for transmitting an RRC message according to another exemplary embodiment
  • FIG. 12 is a block diagram of a terminal according to another exemplary embodiment.
  • FIG. 13 is a block diagram of an access network device, according to another exemplary embodiment.
  • FIG. 1 is a schematic diagram of a communication system shown in an exemplary embodiment of the present disclosure. Among them, the communication system uses 5G. As shown in FIG. 1, the communication system includes: an access network device 10 and a terminal 30.
  • the access network device 10 employs a centralized distributed architecture. That is, the access network device 10 includes a central unit (CU) 11 and at least two distribution units 12. Generally, the centralized unit 11 is provided with a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer. Protocol stack.
  • the MAC layer includes multiple MAC entities, and each MAC layer entity corresponds to one scheduler, and each scheduler is configured to provide a radio resource required for a connection, that is, each scheduler corresponds to one connection.
  • a physical layer (Physical, PHY) protocol stack is disposed in the distribution unit 12.
  • the central unit 11 is used to connect to the core network in the communication system, and the central unit 11 and the at least two distribution units 12 are connected and communicate.
  • the central unit 11 and the at least two distribution units 12 may be connected by optical fibers, or the central unit 11 and the at least two distribution units 12 may be connected by other communication lines.
  • a wireless connection is established between the at least two distribution units 12 and the terminal 30 through a wireless air interface (which may also be referred to as an air interface or an air interface).
  • the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air (NR); or the wireless air interface may also be based on 5G.
  • Wireless air interface for the next generation of mobile communication network technology standards.
  • the terminal 30 establishes a connection with a plurality of distribution units 12.
  • the terminal can also establish multiple connections with the same distribution unit 12.
  • the connection may be a radio bearer (Radio Bearer), and the radio bearer is further divided into a Signal Radio Bearer (SRB) and a Data Radio Bearer (DRB).
  • SRB is a bearer for transmitting control plane messages
  • DRB is a bearer for transmitting data plane messages.
  • each distribution unit 12 can be considered a separate access network device.
  • the communication system is a heterogeneous communication system using a plurality of radio access technologies (RATs), that is, the heterogeneous communication system includes At least two communication systems employing different wireless communication protocols.
  • the heterogeneous communication system includes a first communication system and a second communication system.
  • the first communication system is a 5G communication system
  • the signaling system is an LTE communication system
  • the first communication system is a 5G communication system and the second communication system is a WLAN communication system.
  • the first communication system may be one of a 5G communication system, an LTE communication system, and a WLAN communication system;
  • the second communication system is another one of a 5G communication system, an LTE communication system, and a WLAN communication system.
  • the communication system may also be simultaneously heterogeneously obtained by a 5G communication system, an LTE communication system, and a WLAN communication system.
  • the communication system includes a first access network device 10 in a 5G communication system, a second access network device 20 in the LTE communication system, and a terminal 30. among them:
  • the first access network device 10 in the 5G communication system employs a centralized distributed architecture. That is, the first access network device 10 includes: a central unit 11 and at least two distribution units 12.
  • the second access network device 20 in the LTE communication system is an evolved base station (eNodeB, eNB).
  • eNodeB evolved base station
  • the first access network device 10 and the second access network device 20 can be connected by optical fiber or other communication lines, thereby supporting a tight inter-network coordination (NR-LTE tight interworking) mode between 5G and LTE.
  • the terminal 30 can transmit data in a coordinated manner through the 5G communication system and the LTE communication system (two communication systems transmit simultaneously, or two communication systems transmit at different times).
  • the second communication system employs a WLAN communication system
  • the second access network device 20 is a wireless access point (AP), thereby supporting tight inter-network cooperation between the 5G and the WLAN (NR- WLAN tight interworking) mode.
  • the terminal 30 can transmit data in a coordinated manner through the 5G communication system and the WLAN communication system.
  • the terminal 30 is connected to the first access network device 10 and the second access network device 20 through a wireless air interface.
  • the terminal 30 establishes a connection with the plurality of distribution units 12, and the terminal also establishes multiple connections with the same distribution unit 12.
  • the terminal 30 establishes multiple connections with the second access network device 20.
  • each distribution unit 12 can be regarded as a first access network device, and the plurality of distribution units 12 can be regarded as a plurality of first access network devices.
  • the terminal 30 has different names in different communication systems.
  • the terminal 30 may be a UE in the LTE communication system, and may be a station of the WLAN communication system, or may be a terminal device in the 5G communication system.
  • the name of the terminal 30 is not limited in this embodiment. The embodiment does not limit the name of the access network device.
  • FIG. 3A is a flowchart of a method for sending an RRC message according to an exemplary embodiment. This method can be applied to the communication system shown in FIG. 1. The method can include the following steps.
  • step 301 the access network device generates RRC diversity configuration information of the terminal.
  • the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off RRC diversity.
  • RRC diversity is a transmission method in which the same uplink RRC message is transmitted through at least two connections.
  • the RRC diversity is a sending manner in which the terminal sends the same uplink RRC message to the same access network device through the at least two connections, and/or the RRC diversity is that the terminal connects to different access network devices through the at least two connections. Sending the same uplink RRC message transmission mode (different access network devices will aggregate and merge the uplink RCC message).
  • step 302 the access network device sends RRC diversity configuration information to the terminal.
  • the terminal receives the RRC diversity configuration information sent by the access network device.
  • the RRC diversity configuration information includes: an enable indication and a diversity threshold, or a shutdown indication.
  • the enable indication is used to indicate that the terminal turns on/off RRC diversity;
  • the diversity threshold is used to indicate a threshold value of the channel quality when the terminal turns on the RRC diversity.
  • the RRC diversity configuration information is carried in an RRC connection reconfiguration message. That is, the access network device sends an RRC connection reconfiguration message to the terminal, where the RRC connection reconfiguration message carries RRC diversity configuration information; the terminal receives the RRC connection reconfiguration message.
  • step 303 the terminal determines whether to enable RRC diversity according to the RRC diversity configuration information.
  • RRC diversity is a transmission method in which the same uplink RRC message is transmitted through at least two connections.
  • the RRC diversity configuration information includes: an enable indication and a diversity threshold.
  • the terminal starts RRC diversity according to the enable indication, and determines when to enable RRC diversity according to the diversity threshold, and enables which connections are used for RRC diversity.
  • the RRC diversity configuration information includes: a shutdown indication.
  • the terminal turns off RRC diversity according to the shutdown indication.
  • the terminal copies multiple copies of the same RRC message at the PDCP layer, and sends multiple RRC messages to the same access network device by using at least two connections, and the same access network device performs the merge.
  • the RRC message sending method determines that RRC diversity is enabled according to the RRC diversity configuration information by receiving the RRC diversity configuration information sent by the access network device; After the RRC diversity is enabled, the terminal can send the same uplink RRC message through the at least two connections, and the access network device can be configured to use only one connection in the related art by combining the received at least two identical uplink RRC messages.
  • the RRC message may cause a problem of failure to transmit an RRC message or a high error rate of an RRC message when the channel quality is poor, and the effect of improving the success rate and transmission reliability of the RRC message transmission and reducing the bit error rate of the RRC message is achieved.
  • the RRC diversity configuration information includes an enable indication and a diversity threshold.
  • Step 303 can alternatively be implemented as step 303a and step 303b, as shown in FIG. 3B:
  • step 303a RRC diversity is enabled according to the enable indication.
  • the terminal enables RRC diversity according to the enable indication.
  • step 303b a connection for transmitting an uplink RRC message is determined according to the diversity threshold.
  • the diversity threshold includes: a first diversity threshold and/or a second diversity threshold, wherein the first diversity threshold is less than or equal to the second diversity threshold.
  • the first diversity threshold is a threshold for indicating poor quality of the downlink channel
  • the second diversity threshold is a threshold for indicating good downlink channel quality.
  • the RRC diversity configuration information further includes: a DU list, where the DU list includes: a DU identifier that supports RRC diversity, where:
  • a DU identity that supports RRC diversity is used to uniquely identify a DU that supports RRC diversity. Since one DU corresponds to multiple connections, if at least one connection between the DU and the terminal can support RRC diversity, the DU is a DU supporting RRC diversity.
  • a first diversity threshold is set, a first diversity threshold and a second diversity threshold are set, and a second diversity threshold is set.
  • Whether the RRC diversity configuration information carries the DU list is divided into two cases: carrying the DU list and not carrying the DU list, so there are at least six different implementation manners in the foregoing step 303b.
  • the access network device in these embodiments is exemplified by at least two distribution units DU in the 5G communication system.
  • the RRC diversity configuration information carries: an indication of activation, a first diversity threshold, and a DU list that supports RRC diversity.
  • step 303b is instead implemented as steps 411 to 414.
  • step 411 it is detected whether the downlink channel quality of the first DU is less than the first diversity threshold.
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection.
  • the initial connection is the RRC connection established by the terminal with the access network device for the first time. For example, if the terminal establishes an initial RRC connection with DU1, the first DU is DU1.
  • the downlink channel quality is the channel quality of the downlink channel used to transmit the downlink signal.
  • the terminal obtains the channel quality of the downlink channel by measuring the downlink reference signal in the downlink channel.
  • a channel quality indicator CQI is used to measure the quality of the downlink channel.
  • the terminal needs to determine the uplink channel quality by using the downlink channel quality to determine the channel quality of the uplink channel that sends the uplink RRC message.
  • TDD time division duplex
  • the downlink channel quality is approximately equal to the uplink channel quality according to channel reciprocity; if the terminal and the access network device are When using Frequency Division Duplexing (FDD) technology, the sum of the downlink channel quality and the correction value is approximately equal to the uplink channel quality, wherein the correction value is set by the technician according to the frequency difference between the uplink channel and the downlink channel.
  • FDD Frequency Division Duplexing
  • step 412 or step 413 If the downlink channel quality of the first DU is less than the first diversity threshold, proceed to step 412 or step 413;
  • the RRC diversity is not enabled, and the process ends.
  • step 412 at least one of the second DUs is determined as the target DU
  • the target DU is a DU corresponding to the connection for transmitting the uplink RRC message.
  • the second DU is a DU that supports RRC diversity.
  • the terminal determines all the second DUs as the target DUs, or the terminal determines a part of the second DUs as the target DUs, or the terminal determines the selected one of the second DUs as the target DUs.
  • the terminal when the terminal detects that the downlink channel quality of the first DU is less than the first threshold, the terminal determines all DUs in the DU list that support RRC diversity as the target DU. For example, the DU in the DU list includes DU3, and the target DU is DU3.
  • step 413 the first DU and the at least one second DU are determined as target DUs.
  • the terminal simultaneously determines the first DU and the at least one second DU as the target DU.
  • the terminal determines the first DU and all the second DUs as the target DU; or the terminal determines the first DU and a part of the second DU as the target DU; or the terminal determines the first DU and the second DU as Target DU.
  • the terminal when the terminal detects that the downlink channel quality of the first DU is less than the first threshold, the first DU and all the RRCs supporting the RRC diversity are determined as the DUs corresponding to the connection for sending the uplink RRC message.
  • the DU in the DU list includes DU3, and the target DU is DU1 and DU3.
  • step 414 at least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU and then selects at least two target connections that support RRC diversity.
  • the target connection is a connection for transmitting an uplink RRC message when the RRC diversity is transmitted.
  • the target DU is DU3, the target connections are DU3+z1 and DU3+z2; in another example, the target DU is DU1 and DU3, and the target connections are DU1+x2, DU3+z1, and DU3+z2.
  • each target DU corresponds to at least one target connection.
  • connection supporting RRC diversity includes: a signaling radio bearer, a radio bearer dedicated to RRC diversity, and at least one of a radio bearer that supports piggybacking to transmit an RRC message by multiplexing technology.
  • the DU1 is the DU corresponding to the primary serving cell when the terminal establishes the initial connection, that is, the DU1 is the first DU
  • the DU2 is the DU supporting the RRC diversity, that is, the DU2 is the second DU.
  • the terminal detects that the downlink channel quality of the DU1 is less than the first diversity threshold
  • the terminal determines the DU1 and the DU2 as the target DU.
  • FIG. 4B a schematic diagram of a terminal and target DU enabling RRC diversity is illustrated.
  • the terminal is a UE, and both the DU1 and the DU2 are the UDs that support the RRC diversity.
  • the UE and the DU1 have a connection x1, and the UE and the DU2 have a connection y1, and the connection x1 and the connection y1 are the connections supporting the RRC diversity; The same RRC message is sent through the connections x1 and y1, respectively. Since the communication connection is established between the DU1 and the DU2, the DU2 may send the RRC message to the DU1 when receiving the RRC message, and the UE1 performs the combined reception process on the two identical RRC messages received by the DU1.
  • the downlink channel quality of the terminal and the first DU is not Preferably, the same uplink RRC message is sent through the connection with the first DU and the connection with the second DU, so that the success rate and transmission reliability of sending the uplink RRC message can be improved, and the error of the RRC message can be reduced. rate.
  • the RRC diversity configuration information carries: an indication of activation, a second diversity threshold, and a DU list that supports RRC diversity.
  • step 303b is instead implemented as steps 421 to 425.
  • step 421 it is detected whether the downlink channel quality of each second DU is greater than a second diversity threshold, and the second DU is a DU corresponding to the DU identifier in the DU list.
  • the downlink channel quality of the connection of the primary serving cell of the second DU is preferentially detected.
  • step 422 If the downlink channel quality of the second DU is greater than the second diversity threshold, the process proceeds to step 422 or 423; if the downlink channel quality of the second DU is not greater than the second diversity threshold, the process proceeds to step 424;
  • step 422 if there is a candidate second DU whose downlink channel quality of the second DU is greater than the second diversity threshold, one candidate second DU that is randomly selected is determined as the target DU.
  • the candidate second DU is randomly selected from the candidate second DUs whose downlink channel quality is greater than the second diversity threshold. Determined as the target DU.
  • step 423 if there is a candidate second DU whose downlink channel quality of the second DU is greater than the second diversity threshold, the candidate second DU having the best downlink channel quality is determined as the target DU.
  • the candidate second DUs whose downlink channel quality is greater than the second diversity threshold will be The candidate second DU with the best downlink channel quality is determined as the target DU.
  • step 424 when the downlink channel quality of all the second DUs is less than the second diversity threshold, the first DU and the at least one second DU are determined as the target DU, and the first DU is the primary service when the terminal establishes the initial connection.
  • the DU corresponding to the cell.
  • the terminal determines the first DU and all the second DUs as the target DU; or the terminal determines the first DU and a part of the second DU as the target DU; or the terminal determines the first DU and the second DU as Target DU.
  • step 425 at least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU and then selects at least two target connections that support RRC diversity.
  • the target connection is a connection for transmitting an uplink RRC message when RRC diversity is transmitted.
  • each target DU corresponds to at least one target connection.
  • the second diversity threshold is set to ensure that the downlink channel quality of the terminal and the second DU is good
  • the DUs with better downlink channel quality or the DUs with the best downlink channel quality are randomly selected from the second DU.
  • the same uplink RRC message is sent by the at least two connections with the second DU, so that the success rate and transmission reliability of sending the uplink RRC message can be improved, and the error rate of the RRC message can be reduced.
  • the RRC diversity configuration information carries: an indication of activation, a first diversity threshold, a second diversity threshold, and a DU list that supports RRC diversity.
  • step 303b is instead implemented as steps 431 through 436.
  • step 431 it is detected whether the downlink channel quality of the first DU is smaller than the first diversity threshold, and the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection.
  • step 432 If the downlink channel quality of the first DU is less than the first diversity threshold, proceed to step 432;
  • the RRC diversity is not enabled, and the process ends.
  • step 432 if the downlink channel quality of the first DU is less than the first diversity threshold, detecting whether the downlink channel quality of each second DU is greater than the second diversity threshold;
  • the downlink channel quality of the connection of the primary serving cell of the second DU is preferentially detected.
  • step 433 If there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, the process proceeds to step 433 or step 434. If the downlink channel quality of all the second DUs is less than the second diversity threshold, the process proceeds to step 435.
  • step 433 if there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, one candidate second DU that is randomly selected is determined as the target DU.
  • the second DU is selected from the candidate second DUs whose downlink channel quality is greater than the second diversity threshold, and randomly selected one candidate second DU is determined as the target DU.
  • step 434 when there is a candidate second DU whose downlink channel quality is greater than the second diversity threshold, the candidate second DU having the best downlink channel quality is determined as the target DU.
  • the candidate second DUs whose downlink channel quality is greater than the second diversity threshold will be The candidate second DU with the best downlink channel quality is determined as the target DU.
  • step 435 when the downlink channel quality of all the second DUs is less than the second diversity threshold, the first DU and the at least one second DU are determined as the target DU.
  • the terminal determines the first DU and all the second DUs as the target DU; or the terminal determines the first DU and a part of the second DU as the target DU; or the terminal determines the first DU and the second DU as Target DU.
  • step 436 at least two connections supporting the RRC diversity between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU and then selects at least two target connections that support RRC diversity.
  • the target connection is a connection for transmitting an uplink RRC message when RRC diversity is transmitted.
  • each target DU corresponds to at least one target connection.
  • the DU1 is the DU corresponding to the primary serving cell when the terminal establishes the initial connection, that is, the DU1 is the first DU
  • the DU2 is the DU supporting the RRC diversity, that is, the DU2 is the second DU.
  • the terminal After detecting that the downlink channel quality of the DU1 is smaller than the first diversity threshold, the terminal determines that the downlink channel quality of the DU2 is greater than the second diversity threshold, and determines the DU2 as the target DU.
  • FIG. 4E a schematic diagram of a terminal and target DU enabling RRC diversity is shown.
  • the terminal is a UE
  • the DU2 is a DU that supports RRC diversity.
  • connection y1 and y2 are both connections supporting RRC diversity; after determining that RRC diversity is enabled, the UE will be the same.
  • the RRC message is simultaneously sent to DU2 through connections y1 and y2. After receiving the RRC message transmitted via the connection y1 and the RRC message transmitted via the connection y2, the DU2 performs a combined reception process on the two RRC messages.
  • the second DU is used.
  • the at least two connections with the second DU send the same uplink RRC message, which can improve the success rate and transmission reliability of sending the uplink RRC message, and reduce the error rate of the RRC message.
  • the terminal since the access network device does not indicate to the terminal the DU list supporting RRC diversity, the terminal will all the DUs that support the transmission of the control plane message. Both are considered to be DU lists that support RRC diversity.
  • the DU that supports sending the control plane message is a DU that establishes a connection with the terminal to support sending a control plane message.
  • the connection supporting the transmission of the control plane message includes: a signaling radio bearer, a radio bearer dedicated to RRC diversity, and at least one of radio bearers that transmit an RRC message by multiplexing.
  • the RRC diversity configuration information carries: an indication of activation and a first diversity threshold.
  • step 303b is instead implemented as steps 441 through 444.
  • step 441 it is detected whether the downlink channel quality of the first DU is smaller than the first diversity threshold, where the first DU is the DU corresponding to the primary serving cell when the terminal establishes the initial connection;
  • step 442 or 443 If the downlink channel quality of the first DU is less than the first diversity threshold, proceed to step 442 or 443;
  • the RRC diversity is not enabled, and the process ends.
  • step 442 at least one of the third DUs is determined as the target DU.
  • the third DU is a DU that establishes a connection with the terminal to support sending a control plane message.
  • the connection supporting the transmission of the control plane message includes: a signaling radio bearer, a radio bearer dedicated to RRC diversity, and at least one of radio bearers that transmit an RRC message by multiplexing.
  • the DU1 belongs to the third DU.
  • the radio bearer dedicated to the RRC diversity is established between the terminal and the DU2
  • the DU2 belongs to the third DU; for example, the terminal A data radio bearer is established between the DU4 and the DU4.
  • the data radio bearer supports the radio bearer that sends the RRC message through the multiplexing technology, and the DU4 belongs to the third DU.
  • the terminal determines all the third DUs as the target DUs; or the terminal determines a part of the third DUs as the target DUs; or the terminal determines the selected one third DU as the target DUs.
  • step 443 the first DU and the at least one third DU are determined as target DUs.
  • the terminal simultaneously determines the first DU and the at least one third DU as the target DU.
  • the terminal determines the first DU and all the third DUs as the target DU; or the terminal determines the first DU and a part of the third DU as the target DU; or the terminal determines the first DU and the third DU as Target DU.
  • step 444 at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU, and selects at least two target connections from the connection between the terminal and the target DU that supports sending the control plane message.
  • the target connection is a connection for transmitting an uplink RRC message when RRC diversity is transmitted.
  • each target DU corresponds to at least one target connection.
  • the same uplink RRC is sent through the connection with the first DU and the connection with the third DU.
  • the message can improve the success rate and transmission reliability of sending the uplink RRC message, and reduce the bit error rate of the RRC message.
  • the RRC diversity configuration information carries: an enable indication and a second diversity threshold.
  • step 303b is instead implemented as steps 451 to 455.
  • step 451 it is detected whether the downlink channel quality of each third DU is greater than a second diversity threshold, and the third DU is a DU that supports sending a control plane message.
  • the downlink channel quality of the connection of the primary serving cell of the third DU is preferentially detected.
  • step 452 If the downlink channel quality of the third DU is greater than the second diversity threshold, the process proceeds to step 452 or 453. If the downlink channel quality of all the third DUs is less than the second diversity threshold, the process proceeds to step 454.
  • step 452 if there is a candidate third DU whose downlink channel quality of the third DU is greater than the second diversity threshold, one candidate third DU that is randomly selected is determined as the target DU.
  • the third DU is selected from the candidate third DUs whose downlink channel quality is greater than the second diversity threshold, and one candidate third DU is randomly selected as the target DU.
  • step 453 if there is a candidate third DU whose downlink channel quality of the third DU is greater than the second diversity threshold, the candidate third DU having the best downlink channel quality is determined as the target DU.
  • the candidate third DUs whose downlink channel quality is greater than the second diversity threshold will be The candidate third DU with the best downlink channel quality is determined as the target DU.
  • step 454 when the downlink channel quality of all the third DUs is less than the second diversity threshold, the first DU and the at least one third DU are determined as the target DU.
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection.
  • the terminal determines the first DU and all the third DUs as the target DU; or the terminal determines the first DU and a part of the third DU as the target DU; or the terminal determines the first DU and the third DU as Target DU.
  • step 455 at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU, and selects at least two target connections from the connection between the terminal and the target DU that supports sending the control plane message.
  • the target connection is a connection for transmitting an uplink RRC message when RRC diversity is transmitted.
  • each target DU corresponds to at least one target connection.
  • the DU with the better downlink channel quality or the DU with the best downlink channel quality is selected from the third DU.
  • the same uplink RRC message is sent by the at least two connections with the third DU, so that the success rate and transmission reliability of sending the uplink RRC message can be improved, and the error rate of the RRC message can be reduced.
  • the RRC diversity configuration information carries: an indication of activation, a first diversity threshold, and a second diversity threshold.
  • step 303b is instead implemented as steps 461 to 466.
  • step 461 it is detected whether the downlink channel quality of the first DU is less than the first diversity threshold, A DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection.
  • step 462 If the downlink channel quality of the first DU is less than the first diversity threshold, proceed to step 462;
  • the RRC diversity is not enabled, and the process ends.
  • step 462 if the downlink channel quality of the first DU is less than the first diversity threshold, it is detected whether the downlink channel quality of each third DU is greater than the second diversity threshold.
  • the downlink channel quality of the connection of the primary serving cell of the third DU is preferentially detected.
  • step 463 or 464 when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, the process proceeds to step 463 or 464; when the downlink channel quality of all the third DUs is less than the second diversity threshold, the process proceeds to step 465.
  • step 463 when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, one candidate third DU that is randomly selected is determined as the target DU.
  • the candidate third DU is randomly selected from the candidate third DUs whose downlink channel quality is greater than the second diversity threshold. Determined as the target DU.
  • step 464 when there is a candidate third DU whose downlink channel quality is greater than the second diversity threshold, the candidate third DU having the best downlink channel quality is determined as the target DU.
  • the candidate third DUs whose downlink channel quality is greater than the second diversity threshold will be The candidate third DU with the best downlink channel quality is determined as the target DU.
  • step 465 when the downlink channel quality of all the third DUs is less than the second diversity threshold, the first DU and the at least one third DU are determined as the target DU.
  • the terminal determines the first DU and all the third DUs as the target DU; or the terminal determines the first DU and a part of the third DU as the target DU; or the terminal determines the first DU and the third DU as Target DU.
  • step 466 at least two connections of the support transmission control plane message between the terminal and the target DU are selected as the connection for transmitting the uplink RRC message.
  • the terminal first determines the target DU, and selects at least two target connections from the connection between the terminal and the target DU that supports sending the control plane message.
  • the target connection is a connection for transmitting an uplink RRC message when RRC diversity is transmitted.
  • each target DU corresponds to at least one target connection.
  • the first diversity threshold and the second diversity threshold when the downlink channel quality of the terminal and the first DU is poor, and the downlink channel quality of the terminal and the third DU is good, from the third DU. If the DU with the best downlink channel quality is selected or the DU with the best downlink channel quality is selected, the same uplink RRC message is sent through at least two connections with the third DU to improve the success rate and transmission of the uplink RRC message. Reliability, reducing the bit error rate of RRC messages.
  • the RRC diversity configuration information further carries: a maximum diversity number n.
  • the maximum number of diversity n is used to indicate to the terminal the maximum number of connections used in the RRC diversity process.
  • step 303 (or step 303b, step 414, step 425, step 436, step 444, step 455, step 466), the terminal may also perform the following steps.
  • step 304 the terminal detects whether the number of connections for transmitting the RRC message exceeds the maximum diversity number n.
  • the maximum number of diversity is used to indicate the maximum number of connections that the terminal can adopt when transmitting the same uplink RRC message by using RRC diversity.
  • the maximum number of diversity is 2 or 3 or 4 or other values.
  • step 305 If the maximum diversity number n is exceeded, the process proceeds to step 305; if the maximum diversity number n is not exceeded, normal RRC diversity transmission is performed.
  • step 305 if the maximum number of diversity is exceeded, the terminal selects the first n connections with the best downlink channel quality as the destination connection for transmitting the RRC message.
  • n connections with the best downlink channel quality are selected as the destination connection for transmitting the RRC message.
  • n can be less than the maximum number of diversity, or can be equal to the maximum number of diversity.
  • the target DU and the target connection are determined by the terminal according to the RRC diversity configuration information.
  • the target network and the target connection may be determined by the access network device according to the uplink channel quality, and the access network device directly indicates the target DU and the target connection to the terminal in the RRC diversity configuration information, and the terminal does not need to determine the terminal.
  • the target DU is connected to the target. Please refer to the following examples.
  • FIG. 6 is a flowchart of a method for transmitting an RRC message according to another exemplary embodiment of the present disclosure. This embodiment is exemplified by applying the method to the communication system shown in FIG. 1. The method can include the following steps.
  • step 601 the terminal sends an uplink reference signal to the access network device.
  • the terminal sends an uplink reference signal to the access network device through a control channel or a data channel.
  • the uplink reference signal is used to estimate or measure the uplink channel.
  • the uplink reference signal may be a Dedicated Reference Signal (DRS) or a Sounding Reference Signal (SRS).
  • DRS Dedicated Reference Signal
  • SRS Sounding Reference Signal
  • the access network device receives the uplink reference signal sent by the terminal.
  • step 602 the access network device measures the uplink channel quality of the connection according to the uplink reference signal.
  • step 603 the access network device determines the target connection based on the uplink channel quality.
  • the access network device determines the target DU and the target radio link according to the diversity threshold and the uplink channel quality of each radio link.
  • the determination process is similar to that shown in FIGS. 4A through 4F, in which the terminal determines the target DU and the target radio link according to the diversity threshold and the downlink channel quality (equivalent to the uplink channel quality).
  • the manner in which the access network device determines the target DU and the target radio link according to the diversity threshold and the uplink channel quality of each radio link is not limited.
  • the uplink channel quality of each corresponding wireless link may be measured by each access network device, and then aggregated to the same access network device to perform a determining process. For example, after measuring the uplink channel quality of each corresponding radio link, each DU aggregates the uplink channel quality of each radio link into the first DU, where the first DU is a terminal that establishes an initial RRC connection.
  • the target connection is a connection used for transmitting an uplink RRC message after the terminal enables RRC diversity.
  • step 604 the access network device generates RRC diversity configuration information carrying information elements for indicating the target connection.
  • the information element is typically a field that contains information to indicate the target connection.
  • the information used to indicate the target connection is the identity of the target connection, and, for example, a letter indicating the target connection.
  • Information is any other information that uniquely identifies the target connection.
  • the RRC diversity configuration information further includes an enable indication, where the enable indication is used to instruct the terminal to enable the RRC diversity configuration information.
  • step 605 the access network device sends RRC diversity configuration information to the terminal, where the RRC diversity configuration information includes an enable indication and an information element for indicating the target connection.
  • the terminal receives the RRC diversity configuration information sent by the access network device.
  • the access network device sends an RRC connection reconfiguration message to the terminal, where the RRC connection reconfiguration message carries the RRC diversity configuration information; the terminal receives the RRC connection reconfiguration message sent by the access network device.
  • step 606 the terminal determines whether to enable RRC diversity according to the RRC diversity configuration information.
  • step 606 includes the following two sub-steps.
  • the first step is to enable RRC diversity according to the enablement indication
  • the connection for transmitting the uplink RRC message is determined according to the information unit for indicating the target connection.
  • the RRC diversity configuration information including the identifier of the target access network device and the identifier of the target connection is directly transmitted to the terminal, so that the terminal can be configured according to the RRC diversity.
  • the information directly enables RRC diversity, and knows the target DU and the target connection in the RRC diversity.
  • the terminal does not need to determine the target DU and the target connection by itself, which saves the processing resources of the terminal and simplifies the processing logic of the terminal.
  • each of the above embodiments is exemplified by implementing RRC diversity in the communication system shown in FIG. 1.
  • the embodiments of the present disclosure further provide an embodiment for implementing RRC diversity in a heterogeneous communication system, which is used to implement inter-network cooperative RRC diversity between a 5G communication system and an LTE communication system, or a 5G communication system and Inter-network cooperative RRC diversity between WLAN communication systems, or inter-network system RRC diversity between 5G communication system, LTE communication system and WLAN communication system.
  • a heterogeneous communication system which is used to implement inter-network cooperative RRC diversity between a 5G communication system and an LTE communication system, or a 5G communication system and Inter-network cooperative RRC diversity between WLAN communication systems, or inter-network system RRC diversity between 5G communication system, LTE communication system and WLAN communication system.
  • FIG. 7A is a flowchart of a method for transmitting an RRC message according to an exemplary embodiment of the present disclosure. This embodiment is exemplified by the method applicable to the heterogeneous communication system shown in FIG. 2. The method can include the following steps.
  • step 701 the access network device generates RRC diversity configuration information of the terminal.
  • the heterogeneous communication system includes different types of access network devices, such as the first access
  • the network device and the second access network device need to negotiate and generate different access network devices when generating RRC diversity configuration information.
  • the first access network device is a DU in a 5G communication system
  • the second access network device is an LTE in an LTE communication system.
  • the DU negotiates with the LTE to generate RRC diversity configuration information of the terminal.
  • step 702 the access network device sends RRC diversity configuration information to the terminal.
  • the terminal receives the RRC diversity configuration information sent by the access network device.
  • the access network device sends an RRC connection reconfiguration message to the terminal, where the RRC connection reconfiguration message carries the RRC diversity configuration information; the terminal receives the RRC connection reconfiguration message sent by the access network device.
  • the access network device that sends the RRC connection reconfiguration message to the terminal is the first access network device or the second access network device.
  • the first access network device is an access network device in which the terminal establishes an initial RRC connection
  • the first access network device sends an RRC connection reconfiguration message to the terminal.
  • the RRC diversity configuration information includes: an indication of enabling inter-network cooperative RRC diversity and a diversity threshold, or the RRC diversity configuration information includes: an indication to disable inter-network cooperative RRC diversity.
  • Inter-network cooperative RRC diversity refers to implementing RRC diversity between different communication systems; in other words, inter-network cooperative RRC diversity is a transmission mode in which a terminal sends the same uplink RRC message through at least two connections, and at least two connections are different. At least two access network devices of the communication system.
  • the indication of the inter-network cooperative RRC diversity is used to instruct the terminal to enable/disable the inter-network cooperative RRC diversity.
  • step 703 the terminal determines whether to enable inter-network cooperative RRC diversity according to the RRC diversity configuration information.
  • the RRC diversity configuration information includes: enabling an inter-network coordinated RRC indication and a diversity threshold.
  • the terminal starts the inter-network cooperative RRC diversity according to the enable inter-network cooperative RRC indication, and determines when to enable inter-network cooperative RRC diversity according to the diversity threshold, and enables which connections are used for inter-network cooperative RRC diversity.
  • the RRC diversity configuration information includes: closing the inter-network cooperation RRC indication.
  • the terminal turns off the inter-network cooperative RRC diversity according to the shutdown indication.
  • the terminal copies multiple copies of the same RRC message at the PDCP layer, and sends multiple RRC messages to at least two access network devices in different communication systems by using at least two connections. After being aggregated by different access network devices to the same access network device, combined reception is performed.
  • the method for transmitting an RRC message by receiving the RRC diversity configuration information sent by the access network device, determines to enable the inter-network cooperative RRC according to the RRC diversity configuration information.
  • Diversity after enabling inter-network cooperative RRC diversity, the terminal may send the same uplink RRC message through at least two connections belonging to different communication systems, and the access network device combines the received at least two identical uplink RRC messages. It can solve the problem that when the RRC message is sent by using only one connection in the related art, when the channel quality is poor, the RRC message failure or the RRC message error rate is high, and the success rate and transmission reliability of the RRC message transmission are improved. The effect of reducing the bit error rate of the RRC message.
  • the RRC diversity configuration information includes: an indication of enabling inter-network coordination RRC and a diversity threshold.
  • Step 703 can alternatively be implemented as step 703a and step 703b, as shown in FIG. 7B:
  • step 703a RRC diversity is enabled according to the Enable Inter-Network Cooperative RRC indication.
  • the terminal enables inter-network cooperative RRC diversity according to the enable inter-network cooperative RRC indication.
  • the RRC configuration message further includes a shutdown indication, and when the enable indication is a shutdown indication, the RRC diversity is turned off according to the activation indication.
  • step 703b a connection for transmitting an uplink RRC message is determined according to the diversity threshold.
  • the diversity threshold includes: a first diversity threshold and a second diversity threshold, where the first diversity threshold is less than or equal to the second diversity threshold.
  • the first diversity threshold is a threshold for indicating poor quality of the downlink channel
  • the second diversity threshold is a threshold for indicating good downlink channel quality.
  • the diversity threshold includes: a relative diversity threshold.
  • step 703b Since the diversity threshold in step 703b includes two implementation forms, two different embodiments are exemplified below.
  • the RRC diversity configuration information includes: enabling an inter-network cooperative RRC indication, a first diversity threshold, and a second diversity threshold.
  • the RRC diversity configuration information further includes: an identifier list of the access network device that supports RRC diversity.
  • step 703b can be implemented as step 711 to step 717 instead, as shown in FIG. 7C:
  • step 711 the terminal detects whether the downlink channel quality of all or the specified first access network devices is less than the first diversity threshold.
  • the terminal detects whether the downlink channel quality of all the first access network devices is smaller than the first diversity threshold.
  • the downlink channel quality is the downlink channel quality of the connection between the terminal and the first access network device.
  • the terminal detects whether the downlink channel quality of the specified first access network device is smaller than the first diversity threshold, where the designated first access network device is the first access network device or the support when the terminal establishes the initial connection.
  • the first access network device of RRC diversity is the first access network device or the support when the terminal establishes the initial connection.
  • the first access network device is a DU in a 5G communication system.
  • step 712 if it is less than the first diversity threshold, the terminal detects whether the downlink channel quality of the second access network device is greater than the second diversity threshold.
  • the terminal detects whether the downlink channel quality of all the second access network devices is greater than the second diversity threshold.
  • the downlink channel quality is the downlink channel quality of the connection between the terminal and the second access network device.
  • the terminal detects whether the downlink channel quality of the specified second access network device is greater than a second diversity threshold, where the designated second access network device is a second access network device that supports RRC diversity.
  • the second access network device is an eNode B in an LTE communication system.
  • step 713 if the downlink channel quality of the second access network device is greater than the second diversity threshold, the terminal determines the first access network device and the second access network device as the target access network device.
  • step 714 at least two connections between the terminal and the target access network device are determined as connections for transmitting the uplink RRC message.
  • the terminal determines, as the connection for sending the uplink RRC message, at least two connections that support the RRC diversity with the target access network device; or at least two between the terminal and the target access network device.
  • the strip supports the connection of sending the control plane message and is determined to be the connection for sending the uplink RRC message.
  • each target access network device corresponds to at least one connection for sending an uplink RRC message.
  • the terminal is in two different communication systems at the same time.
  • the above two different communication systems are respectively a 4G communication system and a 5G communication system, wherein the first access network device is a DU, and the second access network The device is an eNodeB.
  • the terminal detects that the downlink channel quality of the DU is smaller than the first diversity threshold, and detects that the downlink channel quality of the eNodeB is greater than the second diversity threshold, the terminal determines the DU and the eNodeB as the target access network device.
  • FIG. 7D a schematic diagram of a terminal and target access network device enabling RRC diversity is illustrated.
  • the terminal is a UE, and the DU and the eNodeB are both access network devices that support RRC diversity; the UE has a connection x1 with the DU1 in the DU, and the UE and the eNodeB store In a connection z1, the connection x1 and the connection z1 are all connections supporting RRC diversity; the UE transmits the same RRC message through the connection x1 and the connection z1 at the same time.
  • the eNodeB sends the RRC message to the DU when the RRC message is received by the eNodeB.
  • the RRC message received by the RRC message and the RRC message sent by the eNodeB are combined and received by the DU.
  • the first diversity threshold and the second diversity threshold are set, when the downlink channel quality of the terminal and the first access network device is poor, and the downlink channel quality of the terminal and the second access network device is good, The same uplink RRC message is sent through the connection with the first access network device and the connection with the second access network device, so that the success rate and transmission reliability of sending the uplink RRC message can be improved, and the RRC is reduced.
  • the bit error rate of the message when the first diversity threshold and the second diversity threshold are set, when the downlink channel quality of the terminal and the first access network device is poor, and the downlink channel quality of the terminal and the second access network device is good.
  • the RRC diversity configuration information includes: enabling an inter-network coordinated RRC indication and a relative diversity threshold.
  • the RRC diversity configuration information further includes: an identifier list of the access network device that supports RRC diversity.
  • step 703b can be implemented instead as step 721 to step 723, as shown in FIG. 7D:
  • step 721 it is detected whether the difference between the downlink channel quality of the worst second access network device and the downlink channel quality of the optimal first access network device is greater than the relative diversity threshold.
  • the worst second access network device is a second access network device that supports RRC diversity and has the worst downlink channel quality, or a second interface that supports transmitting control plane messages and has the worst downlink channel quality.
  • Network access equipment is a second access network device that supports RRC diversity and has the worst downlink channel quality, or a second interface that supports transmitting control plane messages and has the worst downlink channel quality.
  • the optimal first access network device is a first access network device when the terminal establishes an initial connection, or a first access network device that supports RRC diversity and has an optimal downlink channel quality, or supports A first access network device that transmits control plane messages and has an optimal downlink channel quality.
  • step 722 if the difference is greater than the relative diversity threshold, the first access network device and the second access network device are determined as the target access network device.
  • step 723 at least two connections between the terminal and the target access network device are determined as connections for transmitting the uplink RRC message.
  • the terminal determines, as the connection for sending the uplink RRC message, at least two connections that support the RRC diversity with the target access network device; or at least two between the terminal and the target access network device.
  • the strip supports the connection of sending the control plane message and is determined to be the connection for sending the uplink RRC message.
  • each target access network device corresponds to at least one piece for sending an uplink RRC message.
  • Connection in at least two connections for transmitting an uplink RRC message, there is at least one connection corresponding to the first access network device, and at least one connection is corresponding to the second access network device.
  • the same uplink RRC message is sent in cooperation with the connection between the first access network device and the second access network device, which can improve the success rate and transmission reliability of sending the uplink RRC message, and reduce the RRC message. Bit error rate.
  • the first access network device is a DU in a 5G communication system
  • the second access network device is an eNodeB in an LTE communication system.
  • the first access network device and/or the second access network device may be access network devices in other communication systems, for example, the first access network device is a DU in a 5G communication system.
  • the second access network device is an AP in the WLAN communication system, and will not be further described herein.
  • the RRC diversity configuration information in the embodiment of FIG. 7A to FIG. 7D may further include: a maximum diversity number n, and a processing manner when the terminal further includes the maximum diversity number n in the RRC diversity configuration information, and may refer to the figure. As shown in Figure 6, this article will not repeat them.
  • step of the terminal in the foregoing embodiment may be separately implemented as a method for transmitting an RRC message on the terminal side
  • the step of accessing the network device may be separately implemented as a method for transmitting an RRC message on the side of the access network device.
  • FIG. 8 is a block diagram of an apparatus for transmitting an RRC message according to an exemplary embodiment.
  • the apparatus has a function of implementing the above-described method examples, and the functions may be implemented by hardware or by hardware to execute corresponding software.
  • the apparatus can include a receiving module 801 and a determining module 802.
  • the receiving module 801 is configured to receive RRC diversity configuration information that is sent by the access network device, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off the RRC diversity.
  • the determining module 802 is configured to determine, according to the RRC diversity configuration information, whether to enable the RRC diversity, where the RRC diversity is to send the same uplink RRC message by using at least two connections. Delivery method
  • the RRC message sending apparatus receives the RRC diversity configuration information sent by the access network device, and then determines whether RRC diversity is enabled. After the RRC diversity is enabled, the terminal can send through at least two connections.
  • the uplink RRC message solves the problem that when the RRC message is sent by using only one connection in the related art, when the channel quality is poor, the RRC message fails to be transmitted or the RRC message error rate is high, and the success rate of the RRC message transmission is improved. The effect of reducing the bit error rate of the RRC message.
  • the RRC diversity configuration information includes an enable indication and a diversity threshold.
  • the determining module 802 includes: an enable submodule 802a and a determining submodule. 802b.
  • the enabling submodule 802a is configured to enable the RRC diversity according to the enabling indication
  • the determining sub-module 802b is configured to determine a connection for transmitting the uplink RRC message according to the diversity threshold.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a first diversity threshold, and the RRC diversity configuration information further includes: a DU list, the DU list Including: DU identifier supporting RRC diversity;
  • the determining submodule 802b is configured to:
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection
  • the second DU is the DU corresponding to the DU identifier in the DU list;
  • the diversity threshold further includes a second diversity threshold
  • the determining submodule 802b is configured to:
  • the second DU is determined to be the target DU;
  • the candidate second DU is determined to be the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the determining submodule 802b is configured to:
  • the first DU and At least one of the second DUs is determined to be the target DU.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold, where the RRC diversity configuration information further includes: a DU list, the DU list
  • the method includes: a DU identifier supporting RRC diversity and a connection identifier supporting RRC diversity;
  • the determining submodule 802b is configured to:
  • a randomly selected candidate second DU is determined as the target DU, or the best downlink channel is to be obtained.
  • the candidate second DU of quality is determined as the target DU;
  • the determining submodule 802b is further configured to:
  • the access network device includes: at least two distribution units DU in a 5G communication system; the diversity threshold includes a first diversity threshold;
  • the determining submodule 802b is configured to:
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection
  • the third DU is a DU supporting sending a control plane message
  • the diversity threshold further includes a second diversity threshold
  • the determining submodule 802b is configured to:
  • the candidate third DU is determined to be the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the determining submodule 802b is configured to:
  • the access network device includes: at least two distribution units DU in a 5G communication system; the diversity threshold includes a second diversity threshold;
  • the determining submodule 802b is configured to:
  • the third DU is a DU that supports sending a control plane message
  • one candidate third DU that is randomly selected is determined as a target DU, or will have the best downlink channel quality.
  • the candidate third DU is determined to be the target DU;
  • the determining submodule 802b is configured to:
  • the RRC diversity configuration information further includes: a maximum diversity number n; referring to FIG. 9, the apparatus further includes: a detecting module 803 and a selecting module 804.
  • the detecting module 803 is configured to detect whether the number of connections used to send the RRC message exceeds the maximum diversity number n;
  • the selection module 804 is configured to select the first n connections with the best downlink channel quality as the destination connection for transmitting the RRC message if the maximum number of diversity is exceeded.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection.
  • the apparatus further includes:
  • the sending module 805 is configured to send an uplink reference signal to the access network device, where the uplink reference signal is used to measure an uplink channel quality of the connection;
  • the determining module 802 includes:
  • the enabling submodule 802a is configured to enable the RRC diversity according to the enabling indication
  • the determining sub-module 802b is configured to determine a connection for transmitting the uplink RRC message according to the information unit for indicating a target connection.
  • the access network device includes: a first access network device belonging to the first communication system and a second access network device belonging to the second communication system; the first access network device and the The second access network device is connected, and the RRC diversity configuration information includes: an indication for enabling inter-network cooperative RRC diversity and a diversity threshold;
  • the determining module 802 is configured to:
  • the first communication system is one of a 5G communication system, an LTE communication system, and a WLAN communication system
  • the second communication system is: another one of a 5G communication system, an LTE communication system, and a WLAN communication system.
  • the diversity threshold includes: a first diversity threshold and a second diversity threshold.
  • the determining submodule 802b is configured to:
  • the designated first access network device is the first access network when the terminal establishes an initial connection.
  • the downlink channel quality of the second access network device is detected. No greater than the second diversity threshold;
  • the downlink channel quality of the second access network device is greater than the second diversity threshold, determining the first access network device and the second access network device as target access network devices;
  • the diversity threshold includes: a relative diversity threshold
  • the determining submodule 802b is configured to:
  • the first access network device that is optimal is the first access network device when the terminal establishes an initial connection, or the first access network device that supports RRC diversity and has an optimal downlink channel quality, or Supporting a first access network device that transmits a control plane message and has an optimal downlink channel quality;
  • the worst second access network device is a second access network device that supports RRC diversity and has the worst downlink channel quality
  • a second access network device that transmits control plane messages and has the worst downlink channel quality is the worst downlink channel quality.
  • the RRC diversity configuration information includes a shutdown indication.
  • the determining module 802 is configured to close the RRC diversity according to the shutdown indication.
  • the receiving module 801 is configured to receive an RRC connection reconfiguration message sent by the access network device, where the RRC connection reconfiguration message carries the RRC diversity configuration information.
  • FIG. 10 is a block diagram of an apparatus for transmitting an RRC message according to an exemplary embodiment.
  • the apparatus has a function of implementing the above-described method examples, and the functions may be implemented by hardware or by hardware to execute corresponding software.
  • the apparatus can include a generation module 1001 and a transmission module 1002.
  • the generating module 1001 is configured to generate RRC diversity configuration information of the terminal, where the RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off the RRC diversity;
  • the sending module 1002 is configured to send the RRC diversity configuration information to the terminal, where the RRC diversity configuration information is used to configure whether the terminal enables the RRC diversity, the RRC diversity It is a transmission method of transmitting the same uplink RRC message through at least two connections.
  • the RRC diversity configuration information includes:
  • Enabling an indication and a diversity threshold is used to indicate that the terminal enables the RRC diversity; and the diversity threshold is used to determine a radio bearer that sends the uplink RRC message;
  • shutdown indication is used to instruct the terminal to close the RRC diversity.
  • the RRC diversity configuration information further includes: a maximum diversity number n, where the maximum number of diversity n is a maximum number of connections used by the terminal to send the same uplink RRC message.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection.
  • the apparatus further includes:
  • the receiving module 1003 is configured to receive an uplink reference signal sent by the terminal.
  • the generating module 1001 includes:
  • the measuring sub-module 1001a is configured to measure, according to the uplink reference signal, the uplink channel quality of the connection;
  • Determining the sub-module 1001b configured to determine the target connection according to the uplink channel quality
  • the generating submodule 1001c is configured to generate an RRC diversity configuration message carrying the information element for indicating the target connection.
  • the RRC diversity configuration information includes:
  • the indication of the inter-network cooperative RRC diversity and the diversity threshold are enabled; the indication of enabling the inter-network cooperative RRC diversity is used to indicate that the terminal is enabled between the first access network device and the second access network device Inter-network cooperative RRC diversity; the diversity threshold is used to determine a radio bearer that sends the uplink RRC message.
  • the sending module 1002 is configured to send RRC connection reconfiguration information to the terminal, where the RRC connection reconfiguration information carries the RRC diversity configuration information.
  • the device provided by the foregoing embodiment implements the function of sending an RRC message
  • only the division of each function module is used for example.
  • the function may be allocated differently according to actual needs.
  • the function module is completed, that is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • An exemplary embodiment of the present disclosure further provides a method for transmitting an RRC message, which is capable of implementing the method for transmitting an RRC message provided by the present disclosure.
  • the apparatus includes a processor and a memory for storing executable instructions of the processor. Wherein the processor is configured to:
  • RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off the RRC diversity
  • the RRC diversity is a transmission mode in which the same uplink RRC message is sent through at least two connections.
  • the RRC diversity configuration information includes an enable indication and a diversity threshold
  • the processor is configured to:
  • the RRC diversity is enabled according to the activation indication
  • a connection for transmitting the uplink RRC message is determined according to the diversity threshold.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a first diversity threshold, and the RRC diversity configuration information further includes: a DU list, the DU list Including: DU identifier supporting RRC diversity;
  • the processor is configured to:
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection
  • the second DU is the DU corresponding to the DU identifier in the DU list;
  • the diversity threshold further includes a second diversity threshold
  • the processor is configured to:
  • the second DU is determined to be the target DU;
  • the candidate second DU is determined to be the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the processor is configured to:
  • the first DU and At least one of the second DUs is determined to be the target DU.
  • the access network device includes: at least two distribution units DU in the 5G communication system; the diversity threshold includes a second diversity threshold, where the RRC diversity configuration information further includes: a DU list, the DU list Including: DU identifier supporting RRC diversity;
  • the processor is configured to:
  • one candidate second DU that is randomly selected is determined as a target DU, or will have the best downlink channel quality.
  • the candidate second DU is determined to be the target DU;
  • the processor is further configured to:
  • the access network device includes: at least two distribution units DU in a 5G communication system; the diversity threshold includes a first diversity threshold;
  • the processor is configured to:
  • the first DU is a DU corresponding to the primary serving cell when the terminal establishes an initial connection
  • the third DU is a DU supporting sending a control plane message
  • the diversity threshold further includes a second diversity threshold
  • the processor is configured to:
  • the candidate third DU is determined to be the target DU.
  • the diversity threshold further includes a second diversity threshold
  • the processor is configured to:
  • the access network device includes: at least two distribution units DU in a 5G communication system; the diversity threshold includes a second diversity threshold;
  • the processor is configured to:
  • the third DU is a DU that supports sending a control plane message
  • one candidate third DU that is randomly selected is determined as a target DU, or will have the best downlink channel quality.
  • the candidate third DU is determined to be the target DU;
  • the processor is further configured to:
  • the RRC diversity configuration information further includes: a maximum diversity number n;
  • the processor is further configured to:
  • the first n connections with the best downlink channel quality are selected as the destination connection for transmitting the RRC message.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection, and the processor is further configured to:
  • the terminal sends an uplink reference signal to the access network device, where the uplink reference signal is used to measure an uplink channel quality of the connection;
  • the processor is configured to:
  • the access network device includes: a first access network device belonging to the first communication system and a second access network device belonging to the second communication system; the first access network device and the The second access network device is connected, and the RRC diversity configuration information includes: an indication for enabling inter-network cooperative RRC diversity and a diversity threshold;
  • the processor is configured to:
  • the first communication system is one of a 5G communication system, an LTE communication system, and a WLAN communication system
  • the second communication system is: another one of a 5G communication system, an LTE communication system, and a WLAN communication system.
  • the diversity threshold includes: a first diversity threshold and a second diversity threshold.
  • the processor is configured to:
  • the designated first access network device is the first access network when the terminal establishes an initial connection.
  • the first diversity threshold is smaller, detecting whether the downlink channel quality of the second access network device is greater than the second diversity threshold
  • the diversity threshold includes: a relative diversity threshold
  • the processor is configured to:
  • the first access network device that is optimal is the first access network device when the terminal establishes an initial connection, or the first access network device that supports RRC diversity and has an optimal downlink channel quality, or Supporting a first access network device that transmits a control plane message and has an optimal downlink channel quality;
  • the worst second access network device is a second access network device that supports RRC diversity and has the worst downlink channel quality
  • a second access network device that transmits control plane messages and has the worst downlink channel quality is the worst downlink channel quality.
  • the RRC diversity configuration information includes a shutdown indication.
  • the processor is configured to:
  • the RRC diversity is turned off according to the shutdown indication.
  • the processor is configured to:
  • the terminal receives an RRC connection reconfiguration message sent by the access network device, where the RRC connection reconfiguration message carries the RRC diversity configuration information.
  • An exemplary embodiment of the present disclosure further provides a sending apparatus of an RRC message, which can implement the method for sending an RRC message provided by the present disclosure.
  • the apparatus includes a processor and a memory for storing executable instructions of the processor. Wherein the processor is configured to:
  • RRC diversity configuration information is configuration information required when the terminal enables RRC diversity or turns off the RRC diversity;
  • the RRC diversity configuration information is used to configure whether the terminal enables the RRC diversity, and the RRC diversity is a sending manner of sending the same uplink RRC message by using at least two connections.
  • the RRC diversity configuration information includes:
  • Enabling an indication and a diversity threshold is used to indicate that the terminal enables the RRC diversity; and the diversity threshold is used to determine a radio bearer that sends the uplink RRC message;
  • shutdown indication is used to instruct the terminal to close the RRC diversity.
  • the RRC diversity configuration information further includes: a maximum diversity number n, where the maximum number of diversity n is a maximum number of connections used by the terminal to send the same uplink RRC message.
  • the RRC diversity configuration information includes an enable indication and an information unit for indicating a target connection, and the processor is further configured to
  • the access network device generates the RRC diversity configuration information of the terminal, including:
  • the access network device measures, according to the uplink reference signal, the uplink channel quality of the connection
  • the access network device generates an RRC diversity configuration message carrying the information element for indicating a target connection.
  • the RRC diversity configuration information includes:
  • the indication of the inter-network cooperative RRC diversity and the diversity threshold are enabled; the indication of enabling the inter-network cooperative RRC diversity is used to indicate that the terminal is enabled between the first access network device and the second access network device Inter-network cooperative RRC diversity; the diversity threshold is used to determine a radio bearer that sends the uplink RRC message.
  • the processor is configured to:
  • the access network device sends RRC connection reconfiguration information to the terminal, where the RRC connection reconfiguration information carries the RRC diversity configuration information.
  • FIG. 12 is a block diagram showing the structure of a terminal 30 according to an embodiment of the present invention.
  • the terminal 30 includes a processor 21, a transceiver 22, and a memory 23.
  • the processor 21 includes one or more processing cores, and the processor 21 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 22 includes a receiver Rx and a transmitter Tx.
  • the transceiver 22 can also be implemented as a communication chip.
  • the communication chip can include a receiving module, a transmitting module, a modem module, and the like.
  • the information is modulated and demodulated, and the information is received or transmitted through a wireless signal.
  • the transceiver 22 has a plurality of antennas capable of multi-antenna transmission or multi-antenna reception through multiple antennas.
  • the memory 23 is connected to the processor 21.
  • the memory 23 can be used to store software programs as well as modules.
  • the memory can store an operating system 24, at least one of the functions described by the application module 25.
  • the application module 25 includes at least a receiving module 251 for receiving information, a processing module 252 for processing information, and a transmitting module 253 for transmitting information, and other functional modules or program instructions not shown.
  • the processor 21 is configured to execute each module or program instruction in the application module 25 to implement the steps required by the terminal in the foregoing method embodiments.
  • the memory 23 is a computer readable storage medium that can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable and programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • the structure of the terminal 30 shown in FIG. 12 does not constitute a limitation on the access network device, and may include more or less components or some components in combination, or different. Assembly of parts.
  • FIG. 13 is a block diagram showing the structure of an access network device 10 according to an embodiment of the present invention.
  • the access network device includes a processor 31, a transceiver 32, and a memory 33.
  • the processor 31 includes one or more processing cores, and the processor 31 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 32 includes a receiver Rx and a transmitter Tx.
  • the transceiver 32 can also be implemented as a communication chip.
  • the communication chip can include a receiving module, a transmitting module, a modem module, etc., for modulating and demodulating information. The information is received or transmitted via a wireless signal.
  • the transceiver 32 has a plurality of antennas capable of multi-antenna transmission or multi-antenna reception through multiple antennas.
  • the memory 33 is connected to the processor 31.
  • Memory 33 can be used to store software programs as well as modules.
  • the memory can store an operating system 34, at least one of the functions described by the application module 35.
  • the application module 35 includes at least: a receiving module 351 for receiving information for processing information Processing module 352 and transmitting module 353 for transmitting information, as well as other functional modules or program instructions not shown.
  • the processor 31 is configured to execute each module or program instruction in the application module 35, and implement the steps required by the access network device in the foregoing method embodiments.
  • memory 33 is a computer readable medium that can be implemented by any type of volatile or nonvolatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable and programmable only Read Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable and programmable only Read Memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • the structure of the access network device 10 shown in FIG. 13 does not constitute a limitation on the access network device, and may include more or less components or combinations of certain components than illustrated. Or different parts arrangement.
  • a sending system of a radio resource control RRC message is further provided, which is used to perform the foregoing sending method of the RRC message.
  • the system includes: a terminal and an access network device.
  • the terminal is configured to receive RRC diversity configuration information that is sent by the access network device, where the RRC diversity configuration information is configuration information required for the terminal to enable RRC diversity or turn off RRC diversity, and the terminal determines whether to enable RRC diversity according to the RRC diversity configuration information.
  • Diversity is the way in which the same upstream RRC message is sent over at least two connections.
  • the access network device is configured to generate RRC diversity configuration information of the terminal, and send the RRC diversity configuration information to the terminal.
  • a plurality as referred to herein means two or more.
  • "and/or” describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.

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Abstract

本公开是关于一种无线资源控制RRC消息的发送方法及装置，属于无线通信技术领域。所述方法包括：所述终端接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。本公开通过接收接入网设备发送的RRC分集配置信息，然后确定是否启用RRC分集；由于启用RRC分集后，终端可通过至少两条连接发送上行RRC消息，提高RRC消息发送的成功率，减小RRC消息误码率。

Description

RRC消息的发送方法及装置 技术领域
本公开涉及无线通信技术领域，特别涉及一种无线资源控制(Radio Resource Control，RRC)消息的发送方法及装置。
背景技术
RRC消息是用户设备(User Equipment，UE)和接入网设备之间建立、重新建立、维持和释放RRC连接所需要的信令消息。其中，由UE向接入网设备发送的RRC消息是上行RRC消息，由接入网设备向UE发送的RRC消息是下行RRC消息。
当UE和接入网设备之间发送RRC消息时，如果信道质量较差，则容易产生RRC消息发送失败、RRC消息误码率高等问题。
发明内容
本公开实施例提供了一种无线资源控制RRC消息的发送方法及装置。所述技术方案如下：
第一方面，提供了一种无线资源控制RRC消息的发送方法，应用于终端与接入网设备建立有多连接的通信系统中，该方法包括：
终端接收接入网设备发送的RRC分集(diversity)配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
终端根据RRC分集配置信息确定是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，RRC分集配置信息包括启用指示和分集门限；
终端根据RRC分集配置信息确定是否启用RRC分集，包括：
根据启用指示启用RRC分集；
根据分集门限确定用于发送上行RRC消息的连接。
可选地，接入网设备包括：第五代移动通信系统(5th-Generation，5G)通信系统中的至少两个分布单元(Distributed Unit，DU)；分集门限包括第一分 集门限，RRC分集配置信息还包括：DU列表，DU列表包括：支持RRC分集的DU标识；
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU；
若第一DU的下行信道质量小于第一分集门限，则将第二DU中的至少一个确定为目标DU，或者，将第一DU和至少一个第二DU确定为目标DU，第二DU是DU列表中的DU标识所对应的DU；
将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，分集门限还包括第二分集门限；
将第二DU中的至少一个确定为目标DU，包括：
检测每个第二DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为目标DU；
或，
检测每个第二DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第二DU时，将具有最好的下行信道质量的候选第二DU确定为目标DU。
可选地，分集门限还包括第二分集门限；
将第一DU和至少一个第二DU确定为目标DU，包括：
检测每个第二DU的下行信道质量是否大于第二分集门限；当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第二分集门限，RRC分集配置信息还包括：DU列表，DU列表包括：支持RRC分集的DU标识；
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测每个第二DU的下行信道质量是否大于第二分集门限，第二DU是DU列表中的DU标识所对应的DU；
若存在第二DU的下行信道质量大于第二分集门限的候选第二DU，则将 随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的候选第二DU确定为目标DU；
将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，检测每个第二DU的下行信道质量是否大于第二分集门限之后，还包括：
当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU，第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第一分集门限；
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU；
若第一DU的下行信道质量小于第一分集门限，则将第三DU中的至少一个确定为目标DU，或者，将第一DU和至少一个第三DU确定为目标DU，第三DU是支持发送控制面消息的DU；
将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，分集门限还包括第二分集门限；
将第三DU中的至少一个确定为目标DU，包括：
检测每个第三DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU；
或，
检测每个第三DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第三DU时，将具有最好的下行信道质量的候选第三DU确定为目标DU。
可选地，分集门限还包括第二分集门限；
将第一DU和至少一个第三DU确定为目标DU，包括：
检测每个第三DU的下行信道质量是否大于第二分集门限；当全部的第三 DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第二分集门限；
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测每个第三DU的下行信道质量是否大于第二分集门限，第三DU是支持发送控制面消息的DU；
若存在第三DU的下行信道质量大于第二分集门限的候选第三DU，则将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的候选第三DU确定为目标DU；
将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，检测每个第三DU的下行信道质量是否大于第二分集门限之后，还包括：
当全部的第三DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU，第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，RRC分集配置信息还包括：最大分集数目n；
方法还包括：
检测用于发送RRC消息的连接的数量是否超过最大分集数目n；
若超过最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送RRC消息的目的连接。
可选地，RRC分集配置信息包括启用指示和用于指示目标连接的信息单元(Information Element，IE)，终端接收接入网设备发送的RRC分集配置信息之前，还包括：
终端向接入网设备发送上行参考信号，上行参考信号用于测量连接的上行信道质量；
终端根据RRC分集配置信息确定是否启用RRC分集，包括:
根据启用指示开启RRC分集；
根据用于指示目标连接的信息单元确定用于发送上行RRC消息的连接。
可选地，接入网设备包括：属于第一通信系统的第一接入网设备和属于第 二通信系统中的第二接入网设备；第一接入网设备和第二接入网设备相连，RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
终端根据RRC分集配置信息确定是否启用RRC分集，包括：
根据启用网间协同RRC分集的指示，开启在第一接入网设备和第二接入网设备之间的网间协同RRC分集；
根据分集门限确定用于发送上行RRC消息的连接；
其中，第一通信系统是：5G通信系统、长期演进(Long-Term Evolution，LTE)通信系统和无线局域网络(Wireless Local Area Networks,WLAN)通信系统中的一种，第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
可选地，分集门限包括：第一分集门限和第二分集门限，
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测全部或指定的第一接入网设备的下行信道质量是否小于第一分集门限，指定的第一接入网设备是终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
若小于第一分集门限，则检测第二接入网设备的下行信道质量是否大于第二分集门限；
若第二接入网设备的下行信道质量大于第二分集门限，则将第一接入网设备和第二接入网设备确定为目标接入网设备；
将终端与目标接入网设备之间的至少两条连接，确定为用于发送上行RRC消息的连接。
可选地，分集门限包括：相对分集门限，
根据分集门限确定用于发送上行RRC消息的连接，包括：
检测最差的第二接入网设备的下行信道质量减去最优的第一接入网设备的下行信道质量的差值是否大于相对分集门限；
若差值大于相对分集门限，则将第一接入网设备和第二接入网设备确定为目标接入网设备；
将终端与目标接入网设备之间的至少两条连接，确定为用于发送上行RRC消息的连接；
其中，最优的第一接入网设备是终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发 送控制面消息且具有最优下行信道质量的第一接入网设备；最差的第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
可选地，RRC分集配置信息包括关闭指示；
终端根据RRC分集配置信息确定是否启用RRC分集，包括：
根据关闭指示关闭RRC分集。
可选地，终端接收接入网设备发送的RRC分集配置信息，包括：
终端接收接入网设备发送的RRC连接重配置消息(RRC Connnection Reconfiguration)，RRC连接重配置消息携带有RRC分集配置信息。
第二方面，提供了一种无线资源控制RRC消息的发送方法，应用于终端与接入网设备建立有多连接的通信系统中，该方法包括：
接入网设备生成终端的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
接入网设备向终端发送RRC分集配置信息，RRC分集配置信息用于配置终端是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，RRC分集配置信息包括：
启用指示和分集门限；启用指示用于指示终端启用RRC分集；分集门限用于确定发送上行RRC消息的无线承载；
或，
关闭指示，关闭指示用于指示终端关闭RRC分集。
可选地，RRC分集配置信息还包括：最大分集数目n，最大分集数目n是终端发送相同的上行RRC消息时所采用的连接的最大数量。
可选地，RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，接入网设备生成终端的RRC分集配置信息之前，还包括：
接入网设备接收终端发送的上行参考信号；
接入网设备生成终端的RRC分集配置信息，包括：
接入网设备根据上行参考信号测量得到连接的上行信道质量；
接入网设备根据上行信道质量确定出目标连接；
接入网设备生成携带有用于指示目标连接的信息单元的RRC分集配置消 息。
可选地，RRC分集配置信息包括：
启用网间协同RRC分集的指示和分集门限；启用网间协同RRC分集的指示用于指示终端开启在第一接入网设备和第二接入网设备之间的网间协同RRC分集；分集门限用于确定发送上行RRC消息的无线承载。
可选地，接入网设备向终端发送RRC分集配置信息，包括：
接入网设备向终端发送RRC连接重配置信息，RRC连接重配置信息携带有RRC分集配置信息。
第三方面，提供了一种无线资源控制RRC消息的发送装置，应用于终端与接入网设备建立有多连接的通信系统中，该装置包括：
接收模块，被配置为接收接入网设备发送的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
确定模块，被配置为根据RRC分集配置信息确定是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，RRC分集配置信息包括启用指示和分集门限；
确定模块，包括：
启用子模块，被配置为根据启用指示启用RRC分集；
确定子模块，被配置为根据分集门限确定用于发送上行RRC消息的连接。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第一分集门限，RRC分集配置信息还包括：DU列表，DU列表包括：支持RRC分集的DU标识；
确定子模块，被配置为：
检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU；
当第一DU的下行信道质量小于第一分集门限时，将第二DU中的至少一个确定为目标DU，或者，将第一DU和至少一个第二DU确定为目标DU，第二DU是DU列表中的DU标识所对应的DU；
将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，分集门限还包括第二分集门限；
确定子模块，被配置为：
检测每个第二DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为目标DU；
或，
检测每个第二DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第二DU时，将具有最好的下行信道质量的候选第二DU确定为目标DU。
可选地，分集门限还包括第二分集门限；
确定子模块，被配置为：
检测每个第二DU的下行信道质量是否大于第二分集门限；当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第二分集门限，RRC分集配置信息还包括：DU列表，DU列表包括：支持RRC分集的DU标识；
确定子模块，被配置为：
检测每个第二DU的下行信道质量是否大于第二分集门限，第二DU是DU列表中的DU标识所对应的DU；
当存在第二DU的下行信道质量大于第二分集门限的候选第二DU时，则将随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的候选第二DU确定为目标DU；
将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，确定子模块，还被配置为：
当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU，第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第一分集门限；
确定子模块，被配置为：
检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU；
当第一DU的下行信道质量小于第一分集门限时，将第三DU中的至少一个确定为目标DU，或者，将第一DU和至少一个第三DU确定为目标DU，第三DU是支持发送控制面消息的DU；
将终端与目标DU之间的支持发送控制面消息的至少两条连接，确定为用于发送上行RRC消息的连接。
可选地，分集门限还包括第二分集门限；
确定子模块，被配置为：
检测每个第三DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU；
或，
检测每个第三DU的下行信道质量是否大于第二分集门限；当存在下行信道质量大于第二分集门限的候选第三DU时，将具有最好的下行信道质量的候选第三DU确定为目标DU。
可选地，分集门限还包括第二分集门限；
确定子模块，被配置为：
检测每个第三DU的下行信道质量是否大于第二分集门限；当全部的第三DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU。
可选地，接入网设备包括：5G通信系统中的至少两个分布单元DU；分集门限包括第二分集门限；
确定子模块，被配置为：
检测每个第三DU的下行信道质量是否大于第二分集门限，第三DU是支持发送控制面消息的DU；
当存在第三DU的下行信道质量大于第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的候选第三DU确定为目标DU；
将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，确定子模块，被配置为：
当全部的第三DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU，第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，RRC分集配置信息还包括：最大分集数目n；
装置还包括：
检测模块，被配置为检测用于发送RRC消息的连接的数量是否超过最大分集数目n；
选择模块，被配置为若超过最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送RRC消息的目的连接。
可选地，RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，该装置还包括：
发送模块，被配置为向接入网设备发送上行参考信号，上行参考信号用于测量连接的上行信道质量；
确定模块，包括:
开启子模块，被配置为根据启用指示开启RRC分集；
确定子模块，被配置为根据用于指示目标连接的信息单元确定用于发送上行RRC消息的连接。
可选地，接入网设备包括：属于第一通信系统的第一接入网设备和属于第二通信系统中的第二接入网设备；第一接入网设备和第二接入网设备相连，RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
确定子模块，被配置为：
根据启用网间协同RRC分集的指示，开启在第一接入网设备和第二接入网设备之间的网间协同RRC分集；
根据分集门限确定用于发送上行RRC消息的连接；
其中，第一通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的一种，第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
可选地，分集门限包括：第一分集门限和第二分集门限，
确定子模块，被配置为：
检测全部或指定的第一接入网设备的下行信道质量是否小于第一分集门 限，指定的第一接入网设备是终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
当小于第一分集门限时，检测第二接入网设备的下行信道质量是否大于第二分集门限；
当第二接入网设备的下行信道质量大于第二分集门限时，将第一接入网设备和第二接入网设备确定为目标接入网设备；
将终端与目标接入网设备之间的至少两条连接，选择为用于发送上行RRC消息的连接。
可选地，分集门限包括：相对分集门限，
确定子模块，被配置为：
检测最差的第二接入网设备的下行信道质量减去最优的第一接入网设备的下行信道质量的差值是否大于相对分集门限；
当差值大于相对分集门限时，将第一接入网设备和第二接入网设备确定为目标接入网设备；
将终端与目标接入网设备之间的至少两条连接，确定为用于发送上行RRC消息的连接；
其中，最优的第一接入网设备是终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备；最差的第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
可选地，RRC分集配置信息包括关闭指示；
确定模块，被配置为根据关闭指示关闭RRC分集。
可选地，接收模块，被配置为接收接入网设备发送的RRC连接重配置消息，RRC连接重配置消息携带有RRC分集配置信息。
第四方面，提供了一种无线资源控制RRC消息的发送装置，应用于终端与接入网设备建立有多连接的通信系统中，该装置包括：
生成模块，被配置为生成终端的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
发送模块，被配置为向终端发送RRC分集配置信息，RRC分集配置信息 用于配置终端是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，RRC分集配置信息包括：
启用指示和分集门限；启用指示用于指示终端启用RRC分集；分集门限用于确定发送上行RRC消息的无线承载；
或，
关闭指示，关闭指示用于指示终端关闭RRC分集。
可选地，RRC分集配置信息还包括：最大分集数目n，最大分集数目n是终端发送相同的上行RRC消息时所采用的连接的最大数量。
可选地，RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，该装置还包括：
接收模块，被配置为接收终端发送的上行参考信号；
生成模块，包括：
测量子模块，被配置为根据上行参考信号测量得到连接的上行信道质量；
确定子模块，被配置为根据上行信道质量确定出目标连接；
生成子模块，被配置为生成携带有用于指示目标连接的信息单元的RRC分集配置消息。
可选地，RRC分集配置信息包括：
启用网间协同RRC分集的指示和分集门限；启用网间协同RRC分集的指示用于指示终端开启在第一接入网设备和第二接入网设备之间的网间协同RRC分集；分集门限用于确定发送上行RRC消息的无线承载。
可选地，发送模块，被配置为向终端发送RRC连接重配置信息，RRC连接重配置信息携带有RRC分集配置信息。
第五方面，提供了一种无线资源控制RRC消息的发送装置，应用于终端与接入网设备建立有多连接的通信系统中，该装置包括：
处理器；
用于存储处理器的可执行指令的存储器；
其中，处理器被配置为：
接收接入网设备发送的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
根据RRC分集配置信息确定是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
第六方面，提供了一种无线资源控制RRC消息的发送装置，应用于终端与接入网设备建立有多连接的通信系统中，该装置包括：
处理器；
用于存储处理器的可执行指令的存储器；
其中，处理器被配置为：
生成终端的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息；
向终端发送RRC分集配置信息，RRC分集配置信息用于配置终端是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
第七方面，提供了一种无线资源控制RRC消息的发送系统，该系统包括：终端和接入网设备；
所述终端包括如第三方面所述的装置；
所述接入网设备包括如第四方面所述的装置。
本公开实施例提供的技术方案可以包括以下有益效果：通过接收接入网设备发送的RRC分集配置信息，根据RRC分集配置信息确定开启RRC分集；由于启用RRC分集后，终端可通过至少两条连接发送相同的上行RRC消息，接入网设备通过将至少两个相同的上行RRC消息进行合并接收，能够解决相关技术中仅采用一条连接发送RRC消息，当信道质量差时会导致发送RRC消息失败或者RRC消息误码率高的问题，达到了提高RRC消息发送的成功率和传输可靠性，减小RRC消息的误码率的效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开 的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种通信系统的示意图；
图2是根据另一示例性实施例示出的一种通信系统的示意图；
图3A是根据一示例性实施例示出的一种RRC消息的发送方法的流程图；
图3B是根据一示例性实施例示出的图3A中的步骤303的流程图；
图4A、4C、4D、4F、4G、4H是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图；
图4B是本公开一个示例性实施例一种终端与目标DU启用RRC分集的示意图；
图4E是本公开另一个示例性实施例一种终端与目标DU启用RRC分集的示意图；
图5是根据另一示例性实施例示出的一种RRC消息的发送方法的流程图；
图6是根据另一示例性实施例示出的一种RRC消息的发送方法的流程图；
图7A是根据另一示例性实施例示出的一种RRC消息的发送方法的流程图；
图7B是根据一示例性实施例示出的图7A中的步骤703的流程图；
图7C、7E是根据一示例性实施例示出的图7B中的步骤703b的流程图；
图7D是本公开一个示例性实施例一种终端与目标接入网设备启用RRC分集的示意图；
图8是根据一示例性实施例示出的一种RRC消息的发送装置的框图；
图9是根据另一示例性实施例示出的一种RRC消息的发送装置的框图；
图10是根据另一示例性实施例示出的一种RRC消息的发送装置的框图；
图11是根据另一示例性实施例示出的一种RRC消息的发送装置的框图；
图12是根据另一示例性实施例示出的一种终端的框图；
图13是根据另一示例性实施例示出的一种接入网设备的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相 一致的装置和方法的例子。
图1是本公开的一个示例性实施例示出的通信系统的示意图。其中，该通信系统采用5G。如图1所示，该通信系统包括：接入网设备10和终端30。
可选地，接入网设备10采用了集中分布式架构。也即，接入网设备10包括：集中单元(central Unit，CU)11和至少两个分布单元12。通常，集中单元11中集中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈。其中，MAC层包括多个MAC实体，每个MAC层实体对应一个调度器，每个调度器用于提供一条连接所需的无线资源，也即，每个调度器对应一条连接。分布单元12中设置有物理层(Physical，PHY)协议栈。
其中，集中单元11用于连接通信系统中的核心网，集中单元11和至少两个分布单元12相连接并进行通信。可选的，集中单元11与该至少两个分布单元12之间可以通过光纤相连接，或者，集中单元11与该至少两个分布单元12之间也可以通过其它通信线路相连接。
至少两个分布单元12与终端30之间通过无线空口(也可以称为空中接口或空口)建立无线连接。可选地，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口(New Radio，NR)；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
可选地，在该通信系统中，终端30与多个分布单元12建立连接。终端还可以与同一个分布单元12建立多条连接。该连接可以是无线承载(Radio Bearer)，无线承载又分为：信令无线承载(Signal Radio Bearer，SRB)和数据无线承载(Data Radio Bearer，DRB)。其中，SRB是用于传输控制面消息的承载，DRB是用于传输数据面消息的承载。对于终端30来讲，每个分布单元12可视为一个独立的接入网设备。
与图1不同的是，在本公开的另一些实施例中，通信系统是采用了多种无线接入技术(Radio Access Technology，RAT)的异构通信系统，也即该异构通信系统中包括至少两种采用不同无线通信协议的通信系统。比如：异构通信系统包括第一通信系统和第二通信系统。第一通信系统为5G通信系统、第二通 信系统为LTE通信系统；或者，第一通信系统为5G通信系统、第二通信系统为WLAN通信系统。诸如此类，第一通信系统可以是5G通信系统、LTE通信系统和WLAN通信系统中的一种；第二通信系统是5G通信系统、LTE通信系统和WLAN通信系统中的另一种。在本公开的再一些实施例中，通信系统还可以是由5G通信系统、LTE通信系统和WLAN通信系统同时异构得到的。
图2是本公开的另一个示例性实施例示出的通信系统的示意图。该通信系统包括：5G通信系统中的第一接入网设备10、LTE通信系统中的第二接入网设备20和终端30。其中：
5G通信系统中的第一接入网设备10采用了集中分布式架构。也即，第一接入网设备10包括：集中单元11和至少两个分布单元12。
LTE通信系统中的第二接入网设备20是演进型基站(eNodeB,eNB)。
第一接入网设备10与第二接入网设备20之间可以通过光纤或者其它通信线路相连接，从而支持5G与LTE之间的紧密网间协同(NR-LTE tight interworking)模式。在该模式下，终端30可以通过5G通信系统和LTE通信系统以协同方式发送数据(两个通信系统同时发送，或，两个通信系统异时发送)。类似地，如果第二通信系统采用WLAN通信系统，则第二接入网设备20为无线访问接入点(Wireless Access Point，AP)，从而支持5G与WLAN之间的紧密网间协同(NR-WLAN tight interworking)模式。在该模式下，终端30可以通过5G通信系统和WLAN通信系统以协同方式发送数据。
终端30通过无线空口与第一接入网设备10以及第二接入网设备20相连。可选地，终端30与多个分布单元12建立连接，终端还与同一个分布单元12建立多条连接。可选地，终端30与第二接入网设备20建立多条连接。
对于终端30来讲，每个分布单元12可视为是一个第一接入网设备，多个分布单元12可视为是多个第一接入网设备。
需要说明的是，终端30在不同的通信系统中具有不同的名称。比如，终端30可以是LTE通信系统中的UE，可以是WLAN通信系统的站点(Station)，还可以是5G通信系统中的终端设备，本实施例对终端30的名称不做限定，同时，本实施例对接入网设备的名称也不做限定。
图3A是根据一示例性实施例示出的一种RRC消息的发送方法的流程图。 该方法可应用于图1所示的通信系统中。该方法可以包括如下步骤。
在步骤301中，接入网设备生成终端的RRC分集配置信息。
RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息。
RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。可选地，RRC分集是终端通过至少两条连接向同一个接入网设备发送相同的上行RRC消息的发送方式，和/或，RRC分集是终端通过至少两条连接向不同的接入网设备发送相同的上行RRC消息的发送方式(不同的接入网设备会汇总合并该上行RCC消息)。
在步骤302中，接入网设备向终端发送RRC分集配置信息。
相应地，终端接收接入网设备发送的RRC分集配置信息。
可选地，RRC分集配置信息包括：启用指示和分集门限，或者，关闭指示。其中，启用指示用于指示终端开启/关闭RRC分集；分集门限用于指示终端在开启RRC分集时的信道质量的门限值。
可选地，RRC分集配置信息被携带在RRC连接重配置消息中发送。也即，接入网设备向终端发送RRC连接重配置消息，该RRC连接重配置消息携带有RRC分集配置信息；终端接收该RRC连接重配置消息。
在步骤303中，终端根据RRC分集配置信息确定是否启用RRC分集。
RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，RRC分集配置信息包括：启用指示和分集门限。终端根据启用指示开启RRC分集，并根据分集门限确定何时开启RRC分集，以及启用哪些连接进行RRC分集
可选地，RRC分集配置信息包括：关闭指示。终端根据关闭指示关闭RRC分集。
可选地，终端在启用RRC分集后，在PDCP层将同一条RRC消息复制多份，将多份RRC消息使用至少两条连接发送至同一接入网设备，由该同一接入网设备进行合并接收；或者，将多份RRC消息使用至少两条连接发送至不同的接入网设备，由不同的接入网设备汇总至同一接入网设备后进行合并接收。
综上所述，本实施例提供的RRC消息的发送方法，通过接收接入网设备发送的RRC分集配置信息，根据RRC分集配置信息确定开启RRC分集；由 于启用RRC分集后，终端可通过至少两条连接发送相同的上行RRC消息，接入网设备通过将接收到的至少两个相同的上行RRC消息进行合并，能够解决相关技术中仅采用一条连接发送RRC消息，当信道质量差时会导致发送RRC消息失败或者RRC消息误码率高的问题，达到了提高RRC消息发送的成功率和传输可靠性，减小RRC消息的误码率的效果。
在基于图3A所示实施例的一个可选实施例中，RRC分集配置信息包括：启用指示和分集门限。步骤303可替代实现成为步骤303a和步骤303b，如图3B所示：
在步骤303a中，根据启用指示启用RRC分集。
终端根据启用指示启用RRC分集。
在步骤303b中，根据分集门限确定用于发送上行RRC消息的连接。
可选地，分集门限包括：第一分集门限和/或第二分集门限，其中，第一分集门限小于或等于第二分集门限。第一分集门限是用于指示下行信道质量较差的门限，第二分集门限是用于指示下行信道质量较好的门限。
可选地，RRC分集配置信息还包括：DU列表，DU列表包括：支持RRC分集的DU标识其中：
支持RRC分集的DU标识用于唯一标识支持RRC分集的DU。由于一个DU对应多条连接，若该DU与终端之间的存在至少一条连接能够支持RRC分集，则该DU即为支持RRC分集的DU。
需要说明的是，由于RRC分集配置信息中的分集门限存在三种不同的设置情况：设置有第一分集门限、同时设置有第一分集门限和第二分集门限、设置有第二分集门限。RRC分集配置信息是否携带DU列表分为两种情况：携带有DU列表、未携带有DU列表，所以上述步骤303b存在至少六种不同的实现方式。
下面结合六个具体实施例，对上述步骤303b的以上六种不同的实现方式做出解释说明。其中，以这些实施例中的接入网设备是5G通信系统中的至少两个分布单元DU来举例说明。
在第一种实现方式中，RRC分集配置信息携带有：启用指示、第一分集门限和支持RRC分集的DU列表。
图4A是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤411至步骤414。
在步骤411中，检测第一DU的下行信道质量是否小于第一分集门限。
第一DU是终端建立初始连接时的主服务小区所对应的DU。初始连接是终端与接入网设备第一次建立的RRC连接。例如，终端与DU1建立了初始的RRC连接，则第一DU是DU1。
下行信道质量是用于发送下行信号的下行信道的信道质量。可选地，终端通过对下行信道中的下行参考信号进行测量，得到下行信道的信道质量。示例性地，采用信道质量指示(Channel Quality Indicator，CQI)来衡量下行信道质量的好坏。
在本实施例中，终端需要通过下行信道质量等效出上行信道质量，以判断发送上行RRC消息的上行信道的信道质量。可选地，若终端与接入网设备之间采用时分双工(Time Division Duplexing，TDD)技术，则根据信道互易性，下行信道质量约等于上行信道质量；若终端与接入网设备之间采用频分双工(Frequency Division Duplexing，FDD)技术时，下行信道质量与校正值之和约等于上行信道质量，其中，校正值是由技术人员根据上行信道与下行信道的频率差值所设置的经验值。因此，终端测量得到下行信道质量时，可等效计算得到上行信道质量。
若第一DU的下行信道质量小于第一分集门限，则进入步骤412或步骤413；
若第一DU的下行信道质量不小于第一分集门限，则暂不开启RRC分集，结束流程。
在步骤412中，将第二DU中的至少一个确定为目标DU，
目标DU是用于发送上行RRC消息的连接对应的DU。第二DU是支持RRC分集的DU。可选地，终端将所有第二DU确定为目标DU，或者，终端将一部分第二DU确定为目标DU，或者，终端将选择出的一个第二DU确定为目标DU。
在一个示例中，终端检测到第一DU的下行信道质量小于第一分值门限时，将DU列表中所有支持RRC分集的DU确定为目标DU。例如，DU列表中的DU包括DU3，则目标DU为DU3。
在步骤413中，将第一DU和至少一个第二DU确定为目标DU。
与步骤412不同的是，终端将第一DU和至少一个第二DU同时确定为目标DU。
可选地，终端将第一DU和所有第二DU确定为目标DU；或者，终端将第一DU和一部分第二DU确定为目标DU；或者，终端将第一DU和一个第二DU确定为目标DU。
在另一个示例中，终端检测到第一DU的下行信道质量小于第一分值门限时，将第一DU和所有支持RRC分集的DU确定为用于发送上行RRC消息的连接对应的DU。例如，DU列表中的DU包括DU3，则目标DU为DU1和DU3。
在步骤414中，将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再选择支持RRC分集的至少两条目标连接。目标连接是在RRC分集发送时，用于发送上行RRC消息的连接。
在一个示例中，目标DU是DU3，目标连接是DU3+z1和DU3+z2；在另一个示例中，目标DU是DU1和DU3，目标连接是DU1+x2、DU3+z1和DU3+z2。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
可选地，支持RRC分集的连接包括：信令无线承载、专用于RRC分集的无线承载，和通过复用技术支持捎带发送RRC消息的无线承载中的至少一种。
在一个具体的例子中，DU1是终端建立初始连接时的主服务小区所对应的DU，也即DU1为第一DU，DU2为支持RRC分集的DU，也即，DU2为第二DU。终端检测到DU1的下行信道质量小于第一分集门限时，将DU1与DU2确定为目标DU。参考图4B，其示出了一种终端与目标DU启用RRC分集的示意图。其中，该终端为UE，DU1与DU2均为支持RRC分集的DU；UE与DU1中存在一条连接x1，UE与DU2中存在一条连接y1，连接x1、连接y1均为支持RRC分集的连接；UE将同一个RRC消息分别通过连接x1和y1进行发送。由于DU1与DU2之间建立有通信连接，DU2在接收到RRC消息时，可以向DU1发送该RRC消息，由DU1对接收到的两个相同的RRC消息进行合并接收处理。
综上所述，通过设置第一分集门限，使终端与第一DU的下行信道质量不 佳时，通过与第一DU之间的连接和与第二DU之间的连接协同发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在第二种实现方式中，RRC分集配置信息携带有：启用指示、第二分集门限和支持RRC分集的DU列表。
图4C是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤421至步骤425。
在步骤421中，检测每个第二DU的下行信道质量是否大于第二分集门限，第二DU是DU列表中的DU标识所对应的DU。
可选地，当终端与同一个第二DU之间建立有多条连接时，优先检测该第二DU的主服务小区的连接的下行信道质量。
若存在第二DU的下行信道质量大于第二分集门限，进入步骤422或423；若不存在第二DU的下行信道质量大于第二分集门限，进入步骤424；
在步骤422中，若存在第二DU的下行信道质量大于第二分集门限的候选第二DU，则将随机选择出的一个候选第二DU确定为目标DU。
在一个示例中，若终端的检测结果为存在下行信道质量大于第二分集门限的第二DU，则从这些下行信道质量大于第二分集门限的候选第二DU中，随机选一个候选第二DU确定为目标DU。
在步骤423中，若存在第二DU的下行信道质量大于第二分集门限的候选第二DU，则将具有最好的下行信道质量的候选第二DU确定为目标DU。
作为步骤422的另一种并列实现方式，若终端的检测结果为存在下行信道质量大于第二分集门限的第二DU，则从这些下行信道质量大于第二分集门限的候选第二DU中，将下行信道质量最好的候选第二DU确定为目标DU。
在步骤424中，当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU，第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，终端将第一DU和所有第二DU确定为目标DU；或者，终端将第一DU和一部分第二DU确定为目标DU；或者，终端将第一DU和一个第二DU确定为目标DU。
在步骤425中，将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再选择支持RRC分集的至少两条目标连接。目标连接是在RRC分集发送时用于发送上行RRC消息的连接。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
综上所述，通过设置第二分集门限，使终端与第二DU的下行信道质量较好时，从第二DU中随机选择下行信道质量较好的DU或选择下行信道质量最好的DU时，通过与第二DU之间的至少两条连接发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在第三种实现方式中，RRC分集配置信息携带有：启用指示、第一分集门限、第二分集门限和支持RRC分集的DU列表。
图4D是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤431至步骤436。
在步骤431中，检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU。
若第一DU的下行信道质量小于第一分集门限，则进入步骤432；
若第一DU的下行信道质量不小于第一分集门限，则暂不开启RRC分集，结束流程。
在步骤432中，若第一DU的下行信道质量小于第一分集门限，则检测每个第二DU的下行信道质量是否大于第二分集门限；
可选地，当终端与同一个第二DU之间建立有多条连接时，优先检测该第二DU的主服务小区的连接的下行信道质量。
若存在下行信道质量大于第二分集门限的候选第二DU，则进入步骤433或步骤434；若全部的第二DU的下行信道质量均小于第二分集门限时，则进入步骤435。
在步骤433中，若存在下行信道质量大于第二分集门限的候选第二DU时将随机选择出的一个候选第二DU确定为目标DU。
在一个示例中，若终端的检测结果为存在下行信道质量大于第二分集门限 的第二DU，则从这些下行信道质量大于第二分集门限的候选第二DU中，随机选一个候选第二DU确定为目标DU。
在步骤434中，当存在下行信道质量大于第二分集门限的候选第二DU时，将具有最好的下行信道质量的候选第二DU确定为目标DU。
作为步骤433的另一种并列实现方式，若终端的检测结果为存在下行信道质量大于第二分集门限的第二DU，则从这些下行信道质量大于第二分集门限的候选第二DU中，将下行信道质量最好的候选第二DU确定为目标DU。
在步骤435中，当全部的第二DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第二DU确定为目标DU。
可选地，终端将第一DU和所有第二DU确定为目标DU；或者，终端将第一DU和一部分第二DU确定为目标DU；或者，终端将第一DU和一个第二DU确定为目标DU。
在步骤436中，将终端与目标DU之间的支持RRC分集的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再选择支持RRC分集的至少两条目标连接。目标连接是在RRC分集发送时用于发送上行RRC消息的连接。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
在一个具体的例子中，DU1是终端建立初始连接时的主服务小区所对应的DU，也即DU1为第一DU，DU2为支持RRC分集的DU，也即，DU2为第二DU。终端检测到DU1的下行信道质量小于第一分集门限后，检测到DU2的下行信道质量大于第二分集门限后,将DU2确定为目标DU。参考图4E，其示出了一种终端与目标DU启用RRC分集的示意图。其中，该终端为UE，DU2为支持RRC分集的DU；UE与DU2中存在两条连接y1和y2，连接y1、连接y2均为支持RRC分集的连接；UE确定启用RRC分集后，将同一个RRC消息同时通过连接y1和y2向DU2发送。DU2在接收到经由连接y1发送的RRC消息与经由连接y2发送的RRC消息后，对上述两条RRC消息进行合并接收处理。
综上所述，通过设置第一分集门限和第二分集门限，使终端与第一DU的下行信道质量较差时，且终端与第二DU的下行信道质量较好时，从第二DU中任意选择下行信道质量较好的DU或选择下行信道质量最好的DU时，通过 与第二DU之间的至少两条连接发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
与图4A至图4C不同的是，在第四种至第六种实现方式中，由于接入网设备并未向终端指示支持RRC分集的DU列表，则终端将所有支持发送控制面消息的DU均认为是支持RRC分集的DU列表。其中，支持发送控制面消息的DU是与终端之间建立有支持发送控制面消息的连接的DU。支持发送控制面消息的连接包括：信令无线承载、专用于RRC分集的无线承载，和通过复用技术支持捎带发送RRC消息的无线承载中的至少一种。
在第四种实现方式中，RRC分集配置信息携带有：启用指示和第一分集门限。
图4F是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤441至步骤444。
在步骤441中，检测第一DU的下行信道质量是否小于第一分集门限，第一DU是终端建立初始连接时的主服务小区所对应的DU；
若第一DU的下行信道质量小于第一分集门限，进入步骤442或443；
若第一DU的下行信道质量不小于第一分集门限，则暂不开启RRC分集，结束流程。
在步骤442中，将第三DU中的至少一个确定为目标DU。
第三DU是与终端之间建立有支持发送控制面消息的连接的DU。支持发送控制面消息的连接包括：信令无线承载、专用于RRC分集的无线承载，和通过复用技术支持捎带发送RRC消息的无线承载中的至少一种。
比如，终端与DU1之间建立有信令无线承载，则DU1属于第三DU；又比如，终端与DU2之间建立有专用于RRC分集的无线承载，则DU2属于第三DU；再比如，终端与DU4之间建立有数据无线承载，该数据无线承载是通过复用技术支持捎带发送RRC消息的无线承载，则DU4属于第三DU。
可选地，终端将所有的第三DU确定为目标DU；或者，终端将部分第三DU确定为目标DU；或者，终端将选择出的一个第三DU确定为目标DU。
在步骤443中，将第一DU和至少一个第三DU确定为目标DU。
作为步骤442的另一种并列实现方式，终端将第一DU和至少一个第三DU同时确定为目标DU。
可选地，终端将第一DU和所有第三DU确定为目标DU；或者，终端将第一DU和一部分第三DU确定为目标DU；或者，终端将第一DU和一个第三DU确定为目标DU。
在步骤444中，将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再从终端与目标DU之间支持发送控制面消息的连接中，选择出至少两条目标连接。目标连接是在RRC分集发送时用于发送上行RRC消息的连接。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
综上所述，通过设置第一分集门限，使终端与第一DU的下行信道质量不佳时，通过与第一DU之间的连接和与第三DU之间的连接协同发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在第五种实现方式中，RRC分集配置信息携带有：启用指示和第二分集门限。
图4G是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤451至步骤455。
在步骤451中，检测每个第三DU的下行信道质量是否大于第二分集门限，第三DU是支持发送控制面消息的DU。
可选地，当终端与同一个第三DU之间建立有多条连接时，优先检测该第三DU的主服务小区的连接的下行信道质量。
若存在第三DU的下行信道质量大于第二分集门限，进入步骤452或453；若全部的第三DU的下行信道质量均小于第二分集门限时，进入步骤454。
在步骤452中，若存在第三DU的下行信道质量大于第二分集门限的候选第三DU，将随机选择出的一个候选第三DU确定为目标DU。
在一个示例中，若终端的检测结果为存在下行信道质量大于第二分集门限 的第三DU，则从这些下行信道质量大于第二分集门限的候选第三DU中，随机选一个候选第三DU确定为目标DU。
在步骤453中，若存在第三DU的下行信道质量大于第二分集门限的候选第三DU，将具有最好的下行信道质量的候选第三DU确定为目标DU。
作为步骤452的另一种并列实现方式，若终端的检测结果为存在下行信道质量大于第二分集门限的第三DU，则从这些下行信道质量大于第二分集门限的候选第三DU中，将下行信道质量最好的候选第三DU确定为目标DU。
在步骤454中，当全部的第三DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU。
第一DU是终端建立初始连接时的主服务小区所对应的DU。
可选地，终端将第一DU和所有第三DU确定为目标DU；或者，终端将第一DU和一部分第三DU确定为目标DU；或者，终端将第一DU和一个第三DU确定为目标DU。
在步骤455中，将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再从终端与目标DU之间支持发送控制面消息的连接中，选择出至少两条目标连接。目标连接是在RRC分集发送时用于发送上行RRC消息的连接。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
综上所述，通过设置第二分集门限，使终端与第三DU的下行信道质量较好时，从第三DU中任意选择下行信道质量较好的DU或选择下行信道质量最好的DU时，通过与第三DU之间的至少两条连接发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在第六种实现方式中，RRC分集配置信息携带有：启用指示、第一分集门限和第二分集门限。
图4H是本公开一个示例性实施例示出的一种确定用于发送上行RRC消息的连接的方式的流程图。在本实施例中，步骤303b被替代实现成为步骤461至步骤466。
在步骤461中，检测第一DU的下行信道质量是否小于第一分集门限，第 一DU是终端建立初始连接时的主服务小区所对应的DU。
若第一DU的下行信道质量小于第一分集门限，进入步骤462；
若第一DU的下行信道质量不小于第一分集门限，则暂不开启RRC分集，结束流程。
在步骤462中，若第一DU的下行信道质量小于第一分集门限，则检测每个第三DU的下行信道质量是否大于第二分集门限。
可选地，当终端与同一个第三DU之间建立有多条连接时，优先检测该第三DU的主服务小区的连接的下行信道质量。
当存在下行信道质量大于第二分集门限的候选第三DU时，进入步骤463或464；当全部的第三DU的下行信道质量均小于第二分集门限时，进入步骤465。
在步骤463中，当存在下行信道质量大于第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU。
在一个示例中，若终端的检测结果为存在下行信道质量大于第二分集门限的第三DU，则从这些下行信道质量大于第二分集门限的候选第三DU中，随机选一个候选第三DU确定为目标DU。
在步骤464中，当存在下行信道质量大于第二分集门限的候选第三DU时，将具有最好的下行信道质量的候选第三DU确定为目标DU。
作为步骤463的另一种并列实现方式，若终端的检测结果为存在下行信道质量大于第二分集门限的第三DU，则从这些下行信道质量大于第二分集门限的候选第三DU中，将下行信道质量最好的候选第三DU确定为目标DU。
在步骤465中，当全部的第三DU的下行信道质量均小于第二分集门限时，将第一DU和至少一个第三DU确定为目标DU。
可选地，终端将第一DU和所有第三DU确定为目标DU；或者，终端将第一DU和一部分第三DU确定为目标DU；或者，终端将第一DU和一个第三DU确定为目标DU。
在步骤466中，将终端与目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送上行RRC消息的连接。
终端先确定目标DU，再从终端与目标DU之间支持发送控制面消息的连接中，选择出至少两条目标连接。目标连接是在RRC分集发送时用于发送上行RRC消息的连接。
可选地，当目标DU为两个或两个以上时，每个目标DU对应有至少一条目标连接。
综上所述，通过设置第一分集门限和第二分集门限，使终端与第一DU的下行信道质量较差时，且终端与第三DU的下行信道质量较好时，从第三DU中任意选择下行信道质量较好的DU或选择下行信道质量最好的DU时，通过与第三DU之间的至少两条连接发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在基于图3A所示实施例、图3B所示实施例、图4A至图4F所示实施例的任意一个实施例的可选实施例中，RRC分集配置信息中还携带有：最大分集数目n，该最大分集数目n用于向终端指示在RRC分集过程中所使用的连接的最大数量。
结合参考图5，在步骤303(或步骤303b、步骤414、步骤425、步骤436、步骤444、步骤455、步骤466)之后，终端还可以执行如下几个步骤。
在步骤304中，终端检测用于发送RRC消息的连接的数量是否超过最大分集数目n。
其中，最大分集数目用于指示终端采用RRC分集发送同一条上行RRC消息时，所能采用的连接的最大数目。例如，最大分集数目为2或3或4或其它值。
若超过最大分集数目n，则进入步骤305；若未超过最大分集数目n，则进行正常的RRC分集发送。
在步骤305中，若超过最大分集数目，则终端选择出下行信道质量最好的前n个连接，作为发送RRC消息的目的连接。
当终端检测到用于发送RRC消息的连接的数量是否超过最大分集数目，然后选择出下行信道质量最好的前n个连接作为发送RRC消息的目的连接。其中，n可以小于最大分集数目，也可以等于最大分集数目。
通过最大分集数目来限制发送RRC消息的连接的个数，在保证RRC消息发送的成功率以及RRC消息的误码率的前提下，减小终端和接入网设备的处理开销，节省终端与接入网设备的连接资源，提高连接的利用率。
在上述各个实施例中，是由接入网设备向终端发送RRC分集配置信息后， 由终端自行根据RRC分集配置信息确定出目标DU和目标连接。作为另一种实现方式，可以由接入网设备根据上行信道质量确定出目标DU和目标连接，接入网设备在RRC分集配置信息中直接向终端指示目标DU和目标连接，不需要终端自行确定目标DU和目标连接。请参考如下实施例。
图6是根据本公开的另一示例性实施例示出的一种RRC消息的发送方法的流程图。本实施例以该方法应用于图1所示的通信系统中来举例说明。该方法可以包括如下步骤。
在步骤601中，终端向接入网设备发送上行参考信号。
终端通过控制信道或数据信道向接入网设备发送上行参考信号。上行参考信号用于对上行信道进行估计或质量测量。上行参考信号可以是解调参考信号(Dedicated Reference Signal，DRS)或信道探测参考信号(Sounding Reference Signal，SRS)。
对应地，接入网设备接收终端发送的上行参考信号。
在步骤602中，接入网设备根据上行参考信号测量得到连接的上行信道质量。
在步骤603中，接入网设备根据上行信道质量确定出目标连接。
可选地，接入网设备根据分集门限和各个无线链路的上行信道质量，确定出目标DU和目标无线链路。该确定过程与图4A至图4F中所示出的，终端根据分集门限和下行信道质量(等效于上行信道质量)确定出目标DU和目标无线链路的过程类似。本公开实施例对接入网设备如何根据分集门限和各个无线链路的上行信道质量，确定出目标DU和目标无线链路的方式不作限定。
当无线链路对应于不同的接入网设备时，可以由各个接入网设备测量各自对应的无线链路的上行信道质量，然后汇总至同一个接入网设备执行确定过程。比如，各个DU在测量得到各自对应的无线链路的上行信道质量后，将各个无线链路的上行信道质量汇总至第一DU中，第一DU是终端建立初始RRC连接的DU。
其中，目标连接是终端启用RRC分集后，用于传输上行RRC消息的连接。
在步骤604中，接入网设备生成携带有用于指示目标连接的信息单元的RRC分集配置信息。
信息单元通常为一个字段，该字段包括用于指示目标连接的信息。例如，用于指示目标连接的信息是目标连接的标识，再例如，用于指示目标连接的信 息是其它任意可以唯一标识目标连接的信息。
可选地，该RRC分集配置信息中还携带有启用指示，该启用指示用于指示终端开启RRC分集配置信息。
在步骤605中，接入网设备向终端发送RRC分集配置信息，该RRC分集配置信息包括：启用指示和用于指示目标连接的信息单元。
相应地，终端接收接入网设备发送的RRC分集配置信息。
可选地，接入网设备向终端发送RRC连接重配置消息，该RRC连接重配置消息携带有RRC分集配置信息；终端接收接入网设备发送的RRC连接重配置消息。
在步骤606中，终端根据RRC分集配置信息确定是否启用RRC分集。
在一个示例中，步骤606包括如下2个子步骤。
第一步，根据启用指示开启RRC分集；
第二步，根据用于指示目标连接的信息单元确定用于发送上行RRC消息的连接。
综上所述，通过由接入网设备来确定目标DU和目标连接，向终端直接发送包括有目标接入网设备的标识和目标连接的标识的RRC分集配置信息，使得终端能够根据RRC分集配置信息直接启用RRC分集，并获知RRC分集时的目标DU和目标连接，不需要终端自行确定目标DU和目标连接，节省了终端的处理资源且简化了终端的处理逻辑。
上述各个实施例均以图1所示的通信系统中实现RRC分集来示例。除此之外，本公开实施例还提供了在异构通信系统中实现RRC分集的实施例，用于实现5G通信系统与LTE通信系统之间的网间协同RRC分集，或者，5G通信系统与WLAN通信系统之间的网间协同RRC分集，或者，5G通信系统、LTE通信系统与WLAN通信系统三者之间的网间系统RRC分集。请参考如下实施例。
图7A是根据本公开一示例性实施例示出的一种RRC消息的发送方法的流程图。本实施例以该方法可应用于图2所示的异构通信系统中来举例说明。该方法可以包括如下步骤。
在步骤701中，接入网设备生成终端的RRC分集配置信息。
可选地，由于异构通信系统中包括不同类型的接入网设备，比如第一接入 网设备和第二接入网设备，在生成RRC分集配置信息时需要不同的接入网设备之间协商生成。
示意性的，第一接入网设备是5G通信系统中的DU，第二接入网设备是LTE通信系统中的LTE。该DU与LTE之间协商生成终端的RRC分集配置信息。
在步骤702中，接入网设备向终端发送RRC分集配置信息。
相应地，终端接收接入网设备发送的RRC分集配置信息。可选地，接入网设备向终端发送RRC连接重配置消息，该RRC连接重配置消息中携带有该RRC分集配置信息；终端接收接入网设备发送的RRC连接重配置消息。
可选地，向终端发送RRC连接重配置消息的接入网设备是第一接入网设备或第二接入网设备。通常，若第一接入网设备是终端建立初始RRC连接的接入网设备，则由第一接入网设备向终端发送RRC连接重配置消息。
可选地，RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限，或者，RRC分集配置信息包括：关闭网间协同RRC分集的指示。
网间协同RRC分集是指在不同的通信系统之间实现RRC分集；换句话说，网间协同RRC分集是终端通过至少两条连接发送相同的上行RRC消息的发送方式，至少两条连接对应不同通信系统的至少两个接入网设备。网间协同RRC分集的指示用于指示终端开启/关闭网间协同RRC分集。
在步骤703，终端根据RRC分集配置信息确定是否启用网间协同RRC分集。
可选地，RRC分集配置信息包括：启用网间协同RRC指示和分集门限。终端根据启用网间协同RRC指示开启网间协同RRC分集，并根据分集门限确定何时开启网间协同RRC分集，以及启用哪些连接进行网间协同RRC分集
可选地，RRC分集配置信息包括：关闭网间协同RRC指示。终端根据关闭指示关闭网间协同RRC分集。
可选地，终端在启用网间协同RRCRRC分集后，在PDCP层将同一条RRC消息复制多份，将多份RRC消息使用至少两条连接发送至不同通信系统中的至少两个接入网设备，由不同的接入网设备汇总至同一接入网设备后进行合并接收。
综上所述，本实施例提供的RRC消息的发送方法，通过接收接入网设备发送的RRC分集配置信息，根据RRC分集配置信息确定开启网间协同RRC 分集；由于启用网间协同RRC分集后，终端可通过属于不同通信系统的至少两条连接发送相同的上行RRC消息，由接入网设备通过将接收到的至少两个相同的上行RRC消息进行合并，能够解决相关技术中仅采用一条连接发送RRC消息时，当信道质量差时，会导致发送RRC消息失败或者RRC消息误码率高的问题，达到了提高RRC消息发送的成功率和传输可靠性，减小RRC消息的误码率的效果。
在基于图7A所示实施例的一个可选实施例中，RRC分集配置信息包括：启用网间协同RRC的指示和分集门限。步骤703可替代实现成为步骤703a和步骤703b，如图7B所示：
在步骤703a中，根据启用网间协同RRC指示启用RRC分集。
终端根据启用网间协同RRC指示，启用网间协同RRC分集。可选地，RRC配置消息还包括关闭指示，当启用指示为关闭指示时，根据启用指示关闭RRC分集。
在步骤703b中，根据分集门限确定用于发送上行RRC消息的连接。
可选地，分集门限包括：第一分集门限和第二分集门限，其中，第一分集门限小于或等于第二分集门限。第一分集门限是用于指示下行信道质量较差的门限，第二分集门限是用于指示下行信道质量较好的门限。
可选地，分集门限包括：相对分集门限。
由于步骤703b中的分集门限包括两种实现形式，下面采用2个不同的实施例来举例说明。
在第一种实现方式中，RRC分集配置信息包括：启用网间协同RRC指示、第一分集门限和第二分集门限。可选地，RRC分集配置信息还包括：支持RRC分集的接入网设备的标识列表。此时，步骤703b可被替代实现成为步骤711至步骤717，如图7C所示：
在步骤711中，终端检测全部或指定的第一接入网设备的下行信道质量是否小于第一分集门限。
可选地，终端检测全部的第一接入网设备的下行信道质量是否小于第一分集门限。该下行信道质量是终端与第一接入网设备之间的连接的下行信道质量。
可选地，终端检测指定的第一接入网设备的下行信道质量是否小于第一分集门限，其中，指定的第一接入网设备是终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备。
在一个示例中，第一接入网设备为5G通信系统中的DU。
在步骤712中，若小于第一分集门限，则终端检测第二接入网设备的下行信道质量是否大于第二分集门限。
可选地，终端检测全部的第二接入网设备的下行信道质量是否大于第二分集门限。该下行信道质量是终端与第二接入网设备之间的连接的下行信道质量。
可选地，终端检测指定的第二接入网设备的下行信道质量是否大于第二分集门限，其中，指定的第二接入网设备是支持RRC分集的第二接入网设备。
在一个示例中，第二接入网设备为LTE通信系统中的eNode B。
在步骤713中，若存在第二接入网设备的下行信道质量大于第二分集门限，则终端将第一接入网设备和第二接入网设备确定为目标接入网设备。
在步骤714中，将终端与目标接入网设备之间的至少两条连接，确定为用于发送上行RRC消息的连接。
可选地，终端将与目标接入网设备之间的至少两条支持RRC分集的连接，确定为用于发送上行RRC消息的连接；或者，终端将与目标接入网设备之间的至少两条支持发送控制面消息的连接，确定为用于发送上行RRC消息的连接。
可选地，当每个目标接入网设备对应有至少一条用于发送上行RRC消息的连接。换句话说，在用于发送上行RRC消息的至少两条连接中，存在至少一条连接是对应于第一接入网设备的，也存在至少一条连接是对应于第二接入网设备的。
在一个具体的例子中终端同时处于两个不同的通信系统中，以上两个不同的通信系统分别为4G通信系统和5G通信系统，其中，第一接入网设备为DU，第二接入网设备为eNodeB。终端检测到DU的下行信道质量小于第一分集门限时，且检测到eNodeB的下行信道质量大于第二分集门限时，将DU与eNodeB确定为目标接入网设备。参考图7D，其示出了一种终端与目标接入网设备启用RRC分集的示意图。其中，该终端为UE，DU与eNodeB均为支持RRC分集的接入网设备；UE与DU中的DU1存在一条连接x1，UE与eNodeB中存 在一条连接z1，连接x1、连接z1均为支持RRC分集的连接；UE将同一个RRC消息同时通过连接x1和连接z1发送。由于DU与eNodeB之间建立有通信连接，eNodeB在接收到RRC消息时，向DU发送该RRC消息，由DU对自身接收到的RRC消息和eNodeB发送的RRC消息进行合并接收处理。
综上所述，通过设置第一分集门限与第二分集门限，使终端与第一接入网设备的下行信道质量不佳时，且终端与第二接入网设备的下行信道质量较好时，通过与第一接入网设备之间的连接和与第二接入网设备之间的连接协同发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
在第二种实现方式中，RRC分集配置信息包括：启用网间协同RRC指示、相对分集门限。可选地，RRC分集配置信息还包括：支持RRC分集的接入网设备的标识列表。此时，步骤703b可被替代实现成为步骤721至步骤723，如图7D所示：
在步骤721中，检测最差的第二接入网设备的下行信道质量减去最优的第一接入网设备的下行信道质量的差值是否大于相对分集门限。
可选地，最差的第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
可选地，最优的第一接入网设备是终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备。
在步骤722中，若差值大于相对分集门限，则将第一接入网设备和第二接入网设备确定为目标接入网设备。
在步骤723中，将终端与目标接入网设备之间的至少两条连接，确定为用于发送上行RRC消息的连接。
可选地，终端将与目标接入网设备之间的至少两条支持RRC分集的连接，确定为用于发送上行RRC消息的连接；或者，终端将与目标接入网设备之间的至少两条支持发送控制面消息的连接，确定为用于发送上行RRC消息的连接。
可选地，当每个目标接入网设备对应有至少一条用于发送上行RRC消息 的连接。换句话说，在用于发送上行RRC消息的至少两条连接中，存在至少一条连接是对应于第一接入网设备的，也存在至少一条连接是对应于第二接入网设备的。
综上所述，通过设置相对分集门限，使第一通信系统的下行信道质量最佳的连接对应的下行信道质量小于第二通信系统的下行信道质量最差的连接对应的下行信道质量时，通过与第一接入网设备之间的连接和与第二接入网设备之间的连接协同发送相同的上行RRC消息，可以提高发送上行RRC消息的成功率和传输可靠性，减小RRC消息的误码率。
需要说明的是，图7A至图7D实施例以第一接入网设备是5G通信系统中的DU，第二接入网设备是LTE通信系统中的eNodeB来举例说明。但本领域技术人员可知，上述第一接入网设备和/或第二接入网设备可以是其它通信系统中的接入网设备，比如第一接入网设备是5G通信系统中的DU，第二接入网设备是WLAN通信系统中的AP，本文不再一一赘述。
还需要说明的是，图7A至图7D实施例中的RRC分集配置信息还可选包括：最大分集数目n，终端在RRC分集配置信息中还包括最大分集数目n时的处理方式，可以参考图6所示，本文也不再赘述。
需要说明的是，上述实施例中有关终端的步骤可以单独实现成为终端一侧的RRC消息的发送方法，有关接入网设备的步骤可以单独实现成为接入网设备一侧的RRC消息的发送方法。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图8是根据一示例性实施例示出的一种RRC消息的发送装置的框图。该装置具有实现上述方法示例的功能，所述功能可以由硬件实现，也可以由硬件执行相应的软件实现。该装置可以包括：接收模块801和确定模块802。
接收模块801，被配置为接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
确定模块802，被配置为根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发 送方式
综上所述，本实施例提供的RRC消息的发送装置，通过接收接入网设备发送的RRC分集配置信息，然后确定是否启用RRC分集；由于启用RRC分集后，终端可通过至少两条连接发送上行RRC消息，解决了相关技术中仅采用一条连接发送RRC消息时，当信道质量差时，会导致发送RRC消息失败或者RRC消息误码率高的问题，达到了提高RRC消息发送的成功率，减小RRC消息误码率的效果。
在基于图8所示实施例提供的一个可选实施例中，所述RRC分集配置信息包括启用指示和分集门限，参考图9，所述确定模块802，包括：启用子模块802a和确定子模块802b。
启用子模块802a，被配置为根据所述启用指示启用所述RRC分集；
确定子模块802b，被配置为根据所述分集门限确定用于发送所述上行RRC消息的连接。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
所述确定子模块802b，被配置为：
检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
当所述第一DU的下行信道质量小于所述第一分集门限时，将第二DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第二DU确定为所述目标DU，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述分集门限还包括第二分集门限；
所述确定子模块802b，被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为所述目标DU；
或，
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU。
可选地，所述分集门限还包括第二分集门限；
所述确定子模块802b，被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第二DU确定为所述目标DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识和支持RRC分集的连接标识；
所述确定子模块802b，被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
当存在所述第二DU的下行信道质量大于所述第二分集门限的候选第二DU时，则将随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU；
将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述确定子模块802b，还被配置为：
当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第二DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限；
所述确定子模块802b，被配置为：
检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
当所述第一DU的下行信道质量小于所述第一分集门限时，将第三DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第三DU确定为所述目标DU，所述第三DU是支持发送控制面消息的DU；
将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述分集门限还包括第二分集门限；
所述确定子模块802b，被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为所述目标DU；
或，
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU。
可选地，所述分集门限还包括第二分集门限；
所述确定子模块802b，被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第三DU确定为所述目标DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限；
所述确定子模块802b，被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限，所述第三DU是支持发送控制面消息的DU；
当存在所述第三DU的下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU；
将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述确定子模块802b，被配置为：
当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第三DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
在基于图8所示实施例提供的一个可选实施例中，所述RRC分集配置信 息还包括：最大分集数目n；参考图9，所述装置还包括：检测模块803和选择模块804。
检测模块803，被配置为检测用于发送所述RRC消息的连接的数量是否超过所述最大分集数目n；
选择模块804，被配置为若超过所述最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送所述RRC消息的目的连接。
在基于图8所示实施例提供的一个可选实施例中，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，参考图9，所述装置还包括：
发送模块805，被配置为向所述接入网设备发送上行参考信号，所述上行参考信号用于测量所述连接的上行信道质量；
所述确定模块802，包括:
所述启用子模块802a，被配置为根据所述启用指示开启所述RRC分集；
所述确定子模块802b，被配置为根据所述用于指示目标连接的信息单元确定用于发送所述上行RRC消息的连接。
可选地，所述接入网设备包括：属于第一通信系统的第一接入网设备和属于第二通信系统中的第二接入网设备；所述第一接入网设备和所述第二接入网设备相连，所述RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
所述确定模块802，被配置为：
根据所述启用网间协同RRC分集的指示，开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；
根据所述分集门限确定用于发送所述上行RRC消息的连接；
其中，所述第一通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的一种，所述第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
可选地，所述分集门限包括：第一分集门限和第二分集门限，
所述确定子模块802b，被配置为：
检测全部或指定的所述第一接入网设备的下行信道质量是否小于所述第一分集门限，指定的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
当小于所述第一分集门限时，检测所述第二接入网设备的下行信道质量是 否大于所述第二分集门限；
当所述第二接入网设备的下行信道质量大于所述第二分集门限时，将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接。
可选地，所述分集门限包括：相对分集门限，
所述确定子模块802b，被配置为：
检测最差的所述第二接入网设备的下行信道质量减去最优的所述第一接入网设备的下行信道质量的差值是否大于所述相对分集门限；
当所述差值大于所述相对分集门限时，将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接；
其中，最优的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备；最差的所述第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
可选地，所述RRC分集配置信息包括关闭指示；
所述确定模块802，被配置为根据所述关闭指示关闭所述RRC分集。
可选地，所述接收模块801，被配置为接收所述接入网设备发送的RRC连接重配置消息，所述RRC连接重配置消息携带有所述RRC分集配置信息。
图10是根据一示例性实施例示出的一种RRC消息的发送装置的框图。该装置具有实现上述方法示例的功能，所述功能可以由硬件实现，也可以由硬件执行相应的软件实现。该装置可以包括：生成模块1001和发送模块1002。
生成模块1001，被配置为生成所述终端的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
发送模块1002，被配置为向所述终端发送所述RRC分集配置信息，所述RRC分集配置信息用于配置所述终端是否启用所述RRC分集，所述RRC分集 是通过至少两条连接发送相同的上行RRC消息的发送方式。
在基于图10所示实施例提供的一个可选实施例中，所述RRC分集配置信息包括：
启用指示和分集门限；所述启用指示用于指示所述终端启用所述RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载；
或，
关闭指示，所述关闭指示用于指示所述终端关闭所述RRC分集。
可选地，所述RRC分集配置信息还包括：最大分集数目n，所述最大分集数目n是所述终端发送相同的所述上行RRC消息时所采用的连接的最大数量。
在基于图10所示实施例提供的一个可选实施例中，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，参考图11，所述装置还包括：
接收模块1003，被配置为接收所述终端发送的上行参考信号；
所述生成模块1001，包括：
测量子模块1001a，被配置为根据所述上行参考信号测量得到所述连接的上行信道质量；
确定子模块1001b，被配置为根据所述上行信道质量确定出所述目标连接；
生成子模块1001c，被配置为生成携带有所述用于指示目标连接的信息单元的RRC分集配置消息。
可选地，所述RRC分集配置信息包括：
启用网间协同RRC分集的指示和分集门限；所述启用网间协同RRC分集的指示用于指示所述终端开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载。
可选地，所述发送模块1002，被配置为向所述终端发送RRC连接重配置信息，所述RRC连接重配置信息携带有所述RRC分集配置信息。
需要说明的一点是，上述实施例提供的装置在实现其发送RRC消息的功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关 该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开一示例性实施例还提供了一种RRC消息的发送装置，能够实现本公开提供的发送RRC消息的方法的方法。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，所述RRC分集配置信息包括启用指示和分集门限；
处理器被配置为：
根据所述启用指示启用所述RRC分集；
根据所述分集门限确定用于发送所述上行RRC消息的连接。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
处理器被配置为：
检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
若所述第一DU的下行信道质量小于所述第一分集门限，则将第二DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第二DU确定为所述目标DU，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述分集门限还包括第二分集门限；
可选地，处理器被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为所述目标DU；
或，
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU。
可选地，所述分集门限还包括第二分集门限；
可选地，处理器被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第二DU确定为所述目标DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
可选地，处理器被配置为：
检测每个所述第二DU的下行信道质量是否大于所述第二分集门限，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
当存在所述第二DU的下行信道质量大于所述第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU；
将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，处理器还被配置为：
当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第二DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限；
可选地，处理器被配置为：
检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
若所述第一DU的下行信道质量小于所述第一分集门限，则将第三DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第三DU确定为所述目标DU，所述第三DU是支持发送控制面消息的DU；
将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，所述分集门限还包括第二分集门限；
可选地，处理器被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为所述目标DU；
或，
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU。
可选地，所述分集门限还包括第二分集门限；
可选地，处理器被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第三DU确定为所述目标DU。
可选地，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限；
可选地，处理器被配置为：
检测每个所述第三DU的下行信道质量是否大于所述第二分集门限，所述第三DU是支持发送控制面消息的DU；
当存在所述第三DU的下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU；
将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
可选地，处理器还被配置为：
当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第三DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
可选地，所述RRC分集配置信息还包括：最大分集数目n；
可选地，处理器还被配置为：
检测用于发送所述RRC消息的连接的数量是否超过所述最大分集数目n；
若超过所述最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送所述RRC消息的目的连接。
可选地，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，处理器还被配置为：
所述终端向所述接入网设备发送上行参考信号，所述上行参考信号用于测量所述连接的上行信道质量；
可选地，处理器被配置为：
根据所述启用指示开启所述RRC分集；
根据所述用于指示目标连接的信息单元确定用于发送所述上行RRC消息的连接。
可选地，所述接入网设备包括：属于第一通信系统的第一接入网设备和属于第二通信系统中的第二接入网设备；所述第一接入网设备和所述第二接入网设备相连，所述RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
可选地，处理器被配置为：
根据所述启用网间协同RRC分集的指示，开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；
根据所述分集门限确定用于发送所述上行RRC消息的连接；
其中，所述第一通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的一种，所述第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
可选地，所述分集门限包括：第一分集门限和第二分集门限，
可选地，处理器被配置为：
检测全部或指定的所述第一接入网设备的下行信道质量是否小于所述第一分集门限，指定的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
若小于所述第一分集门限，则检测所述第二接入网设备的下行信道质量是否大于所述第二分集门限；
若所述第二接入网设备的下行信道质量大于所述第二分集门限，则将所述 第一接入网设备和所述第二接入网设备确定为目标接入网设备；
将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接。
可选地，所述分集门限包括：相对分集门限，
可选地，处理器被配置为：
检测最差的所述第二接入网设备的下行信道质量减去最优的所述第一接入网设备的下行信道质量的差值是否大于所述相对分集门限；
若所述差值大于所述相对分集门限，则将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接；
其中，最优的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备；最差的所述第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
可选地，所述RRC分集配置信息包括关闭指示；
可选地，处理器被配置为：
根据所述关闭指示关闭所述RRC分集。
可选地，处理器被配置为：
所述终端接收所述接入网设备发送的RRC连接重配置消息，所述RRC连接重配置消息携带有所述RRC分集配置信息。
本公开一示例性实施例还提供了一种RRC消息的发送装置，能够实现本公开提供的发送RRC消息的方法。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
生成所述终端的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
向所述终端发送所述RRC分集配置信息，所述RRC分集配置信息用于配置所述终端是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
可选地，所述RRC分集配置信息包括：
启用指示和分集门限；所述启用指示用于指示所述终端启用所述RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载；
或，
关闭指示，所述关闭指示用于指示所述终端关闭所述RRC分集。
可选地，所述RRC分集配置信息还包括：最大分集数目n，所述最大分集数目n是所述终端发送相同的所述上行RRC消息时所采用的连接的最大数量。
可选地，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，处理器还被配置为
所述接入网设备接收所述终端发送的上行参考信号；
所述接入网设备生成所述终端的RRC分集配置信息，包括：
所述接入网设备根据所述上行参考信号测量得到所述连接的上行信道质量；
所述接入网设备根据所述上行信道质量确定出所述目标连接；
所述接入网设备生成携带有所述用于指示目标连接的信息单元的RRC分集配置消息。
可选地，所述RRC分集配置信息包括：
启用网间协同RRC分集的指示和分集门限；所述启用网间协同RRC分集的指示用于指示所述终端开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载。
可选地，处理器被配置为：
所述接入网设备向所述终端发送RRC连接重配置信息，所述RRC连接重配置信息携带有所述RRC分集配置信息。
图12示出了本发明一个实施例提供的终端30的结构方框图。该终端30包括：处理器21、收发器22、存储器23。
处理器21包括一个或者一个以上处理核心，处理器21通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器22包括接收机Rx和发射机Tx，收发器22还可以实现成为一通信芯片，通信芯片中可以包括接收模块、发射模块和调制解调模块等，用于对信 息进行调制解调，并通过无线信号接收或发送该信息。可选地，该收发器22具有多根天线，能够通过多个天线实现多天线发送或多天线接收。
存储器23与处理器21相连。
存储器23可用于存储软件程序以及模块。存储器可存储操作系统24、至少一个功能所述的应用程序模块25。
应用程序模块25至少包括：用于接收信息的接收模块251，用于处理信息的处理模块252和用于发送信息的发送模块253，以及其它未示出的功能模块或程序指令。
可选地，处理器21用于执行应用程序模块25中的各个模块或程序指令，实现上述各个方法实施例中由终端所需要执行的步骤。
此外，存储器23是一种计算机可读存储介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
本领域技术人员可以理解，图12中所示出的终端30的结构并不构成对接入网设备的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图13示出了本发明一个实施例提供的接入网设备10的结构方框图。该接入网设备包括：处理器31、收发器32、存储器33。
处理器31包括一个或者一个以上处理核心，处理器31通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器32包括接收机Rx和发射机Tx，收发器32还可以实现成为一通信芯片，通信芯片中可以包括接收模块、发射模块和调制解调模块等，用于对信息进行调制解调，并通过无线信号接收或发送该信息。可选地，该收发器32具有多根天线，能够通过多个天线实现多天线发送或多天线接收。
存储器33与处理器31相连。
存储器33可用于存储软件程序以及模块。存储器可存储操作系统34、至少一个功能所述的应用程序模块35。
应用程序模块35至少包括：用于接收信息的接收模块351，用于处理信息 的处理模块352和用于发送信息的发送模块353，以及其它未示出的功能模块或程序指令。
可选地，处理器31用于执行应用程序模块35中的各个模块或程序指令，实现上述各个方法实施例中由接入网设备所需要执行的步骤。
此外，存储器33是一种计算机可读介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
本领域技术人员可以理解，图13中所示出的接入网设备10的结构并不构成对接入网设备的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
在示例性实施例中，还提供了一种无线资源控制RRC消息的发送系统，用于执行上述RRC消息的发送方法。该系统包括：终端和接入网设备。
所述终端用于接收接入网设备发送的RRC分集配置信息，RRC分集配置信息是终端启用RRC分集或关闭RRC分集时所需的配置信息，终端根据RRC分集配置信息确定是否启用RRC分集，RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
所述接入网设备用于生成所述终端的RRC分集配置信息，向所述终端发送所述RRC分集配置信息。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性 的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (53)

  1. 一种无线资源控制RRC消息的发送方法，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述方法包括：
    所述终端接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  2. 根据权利要求1所述的方法，其特征在于，所述RRC分集配置信息包括启用指示和分集门限；
    所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，包括：
    根据所述启用指示启用所述RRC分集；
    根据所述分集门限确定用于发送所述上行RRC消息的连接。
  3. 根据权利要求2所述的方法，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
    若所述第一DU的下行信道质量小于所述第一分集门限，则将第二DU中的至少一个确定为目标DU，或者，将所述第一DU和至少一个所述第二DU确定为所述目标DU，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
    将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  4. 根据权利要求3所述的方法，其特征在于，所述分集门限还包括第二分集门限；
    所述将所述第二DU中的至少一个确定为所述目标DU，包括：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为所述目标DU；
    或，
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU。
  5. 根据权利要求3所述的方法，其特征在于，所述分集门限还包括第二分集门限；
    所述将所述第一DU和至少一个所述第二DU确定为所述目标DU，包括：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第二DU确定为所述目标DU。
  6. 根据权利要求2所述的方法，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
    若存在所述第二DU的下行信道质量大于所述第二分集门限的候选第二DU，则将随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU；
    将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  7. 根据权利要求6所述的方法，其特征在于，所述检测每个所述第二DU的下行信道质量是否大于所述第二分集门限之后，还包括：
    当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将第 一DU和至少一个所述第二DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
  8. 根据权利要求2所述的方法，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限；
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
    若所述第一DU的下行信道质量小于所述第一分集门限，则将第三DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第三DU确定为所述目标DU，所述第三DU是支持发送控制面消息的DU；
    将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  9. 根据权利要求8所述的方法，其特征在于，所述分集门限还包括第二分集门限；
    所述将所述第三DU中的至少一个确定为所述目标DU，包括：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为所述目标DU；
    或，
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU。
  10. 根据权利要求8所述的方法，其特征在于，所述分集门限还包括第二分集门限；
    所述将所述第一DU和至少一个所述第三DU确定为所述目标DU，包括：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第三DU确定为所述目标DU。
  11. 根据权利要求2所述的方法，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限；
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限，所述第三DU是支持发送控制面消息的DU；
    若存在所述第三DU的下行信道质量大于所述第二分集门限的候选第三DU，则将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU；
    将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  12. 根据权利要求11所述的方法，其特征在于，所述检测每个所述第三DU的下行信道质量是否大于所述第二分集门限之后，还包括：
    当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第三DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
  13. 根据权利要求3至12任一所述的方法，其特征在于，所述RRC分集配置信息还包括：最大分集数目n；
    所述方法还包括：
    检测用于发送所述RRC消息的连接的数量是否超过所述最大分集数目n；
    若超过所述最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送所述RRC消息的目的连接。
  14. 根据权利要求1所述的方法，其特征在于，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，所述终端接收所述接入网设备发送的RRC分集配置信息之前，还包括：
    所述终端向所述接入网设备发送上行参考信号，所述上行参考信号用于测量所述连接的上行信道质量；
    所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，包括:
    根据所述启用指示开启所述RRC分集；
    根据所述用于指示目标连接的信息单元确定用于发送所述上行RRC消息的连接。
  15. 根据权利要求1所述的方法，其特征在于，所述接入网设备包括：属于第一通信系统的第一接入网设备和属于第二通信系统中的第二接入网设备；所述第一接入网设备和所述第二接入网设备相连，所述RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
    所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，包括：
    根据所述启用网间协同RRC分集的指示，开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；
    根据所述分集门限确定用于发送所述上行RRC消息的连接；
    其中，所述第一通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的一种，所述第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
  16. 根据权利要求15所述的方法，其特征在于，所述分集门限包括：第一分集门限和第二分集门限，
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测全部或指定的所述第一接入网设备的下行信道质量是否小于所述第一分集门限，指定的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
    若小于所述第一分集门限，则检测所述第二接入网设备的下行信道质量是否大于所述第二分集门限；
    若所述第二接入网设备的下行信道质量大于所述第二分集门限，则将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
    将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接。
  17. 根据权利要求15所述的方法，其特征在于，所述分集门限包括：相对分集门限，
    所述根据所述分集门限确定用于发送所述上行RRC消息的连接，包括：
    检测最差的所述第二接入网设备的下行信道质量减去最优的所述第一接入网设备的下行信道质量的差值是否大于所述相对分集门限；
    若所述差值大于所述相对分集门限，则将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
    将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接；
    其中，最优的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备；最差的所述第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
  18. 根据权利要求1所述的方法，其特征在于，所述RRC分集配置信息包括关闭指示；
    所述终端根据所述RRC分集配置信息确定是否启用所述RRC分集，包括：
    根据所述关闭指示关闭所述RRC分集。
  19. 根据权利要求1至18任一所述的方法，其特征在于，所述终端接收所述接入网设备发送的RRC分集配置信息，包括：
    所述终端接收所述接入网设备发送的RRC连接重配置消息，所述RRC连接重配置消息携带有所述RRC分集配置信息。
  20. 一种无线资源控制RRC消息的发送方法，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述方法包括：
    所述接入网设备生成所述终端的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    所述接入网设备向所述终端发送所述RRC分集配置信息，所述RRC分集配置信息用于配置所述终端是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  21. 根据权利要求20所述的方法，其特征在于，所述RRC分集配置信息包括：
    启用指示和分集门限；所述启用指示用于指示所述终端启用所述RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载；
    或，
    关闭指示，所述关闭指示用于指示所述终端关闭所述RRC分集。
  22. 根据权利要求20所述的方法，其特征在于，
    所述RRC分集配置信息还包括：最大分集数目n，所述最大分集数目n是所述终端发送相同的所述上行RRC消息时所采用的连接的最大数量。
  23. 根据权利要求20所述的方法，其特征在于，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，所述接入网设备生成所述终端的RRC分集配置信息之前，还包括：
    所述接入网设备接收所述终端发送的上行参考信号；
    所述接入网设备生成所述终端的RRC分集配置信息，包括：
    所述接入网设备根据所述上行参考信号测量得到所述连接的上行信道质量；
    所述接入网设备根据所述上行信道质量确定出所述目标连接；
    所述接入网设备生成携带有所述用于指示目标连接的信息单元的RRC分集配置消息。
  24. 根据权利要求20所述的方法，其特征在于，所述RRC分集配置信息包括：
    启用网间协同RRC分集的指示和分集门限；所述启用网间协同RRC分集的指示用于指示所述终端开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载。
  25. 根据权利要求20至23任一所述的方法，其特征在于，所述接入网设备向所述终端发送所述RRC分集配置信息，包括：
    所述接入网设备向所述终端发送RRC连接重配置信息，所述RRC连接重配置信息携带有所述RRC分集配置信息。
  26. 一种无线资源控制RRC消息的发送装置，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述装置包括：
    接收模块，被配置为接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    确定模块，被配置为根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  27. 根据权利要求26所述的装置，其特征在于，所述RRC分集配置信息包括启用指示和分集门限；
    所述确定模块，包括：
    启用子模块，被配置为根据所述启用指示启用所述RRC分集；
    确定子模块，被配置为根据所述分集门限确定用于发送所述上行RRC消息的连接。
  28. 根据权利要求27所述的装置，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
    所述确定子模块，被配置为：
    检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
    当所述第一DU的下行信道质量小于所述第一分集门限时，将第二DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第二DU确定为所述目标DU，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
    将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为 用于发送所述上行RRC消息的连接。
  29. 根据权利要求28所述的装置，其特征在于，所述分集门限还包括第二分集门限；
    所述确定子模块，被配置为：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将随机选择出的一个候选第二DU确定为所述目标DU；
    或，
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第二DU时，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU。
  30. 根据权利要求28所述的装置，其特征在于，所述分集门限还包括第二分集门限；
    所述确定子模块，被配置为：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限；当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第二DU确定为所述目标DU。
  31. 根据权利要求27所述的装置，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限，所述RRC分集配置信息还包括：DU列表，所述DU列表包括：支持RRC分集的DU标识；
    所述确定子模块，被配置为：
    检测每个所述第二DU的下行信道质量是否大于所述第二分集门限，所述第二DU是所述DU列表中的所述DU标识所对应的DU；
    当存在所述第二DU的下行信道质量大于所述第二分集门限的候选第二DU时，则将随机选择出的一个候选第二DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第二DU确定为所述目标DU；
    将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为 用于发送所述上行RRC消息的连接。
  32. 根据权利要求31所述的装置，其特征在于，所述确定子模块，还被配置为：
    当全部的所述第二DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第二DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
  33. 根据权利要求27所述的装置，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第一分集门限；
    所述确定子模块，被配置为：
    检测第一DU的下行信道质量是否小于所述第一分集门限，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU；
    当所述第一DU的下行信道质量小于所述第一分集门限时，将第三DU中的至少一个确定为所述目标DU，或者，将所述第一DU和至少一个所述第三DU确定为所述目标DU，所述第三DU是支持发送控制面消息的DU；
    将所述终端与所述目标DU之间的支持发送控制面消息的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  34. 根据权利要求33所述的装置，其特征在于，所述分集门限还包括第二分集门限；
    所述确定子模块，被配置为：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为所述目标DU；
    或，
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当存在所述下行信道质量大于所述第二分集门限的候选第三DU时，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU。
  35. 根据权利要求33所述的装置，其特征在于，所述分集门限还包括第二 分集门限；
    所述确定子模块，被配置为：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限；当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将所述第一DU和至少一个所述第三DU确定为所述目标DU。
  36. 根据权利要求27所述的装置，其特征在于，所述接入网设备包括：5G通信系统中的至少两个分布单元DU；所述分集门限包括第二分集门限；
    所述确定子模块，被配置为：
    检测每个所述第三DU的下行信道质量是否大于所述第二分集门限，所述第三DU是支持发送控制面消息的DU；
    当存在所述第三DU的下行信道质量大于所述第二分集门限的候选第三DU时，将随机选择出的一个候选第三DU确定为目标DU，或者，将具有最好的下行信道质量的所述候选第三DU确定为所述目标DU；
    将所述终端与所述目标DU之间的支持RRC分集的至少两条连接，选择为用于发送所述上行RRC消息的连接。
  37. 根据权利要求36所述的装置，其特征在于，所述确定子模块，被配置为：
    当全部的所述第三DU的下行信道质量均小于所述第二分集门限时，将第一DU和至少一个所述第三DU确定为所述目标DU，所述第一DU是所述终端建立初始连接时的主服务小区所对应的DU。
  38. 根据权利要求28至37任一所述的装置，其特征在于，所述RRC分集配置信息还包括：最大分集数目n；
    所述装置还包括：
    检测模块，被配置为检测用于发送所述RRC消息的连接的数量是否超过所述最大分集数目n；
    选择模块，被配置为若超过所述最大分集数目，则选择出下行信道质量最好的前n个连接，作为发送所述RRC消息的目的连接。
  39. 根据权利要求26所述的装置，其特征在于，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，所述装置，还包括：
    发送模块，被配置为向所述接入网设备发送上行参考信号，所述上行参考信号用于测量所述连接的上行信道质量；
    所述确定模块，包括:
    所述开启子模块，被配置为根据所述启用指示开启所述RRC分集；
    所述确定子模块，被配置为根据所述用于指示目标连接的信息单元确定用于发送所述上行RRC消息的连接。
  40. 根据权利要求26所述的装置，其特征在于，所述接入网设备包括：属于第一通信系统的第一接入网设备和属于第二通信系统中的第二接入网设备；所述第一接入网设备和所述第二接入网设备相连，所述RRC分集配置信息包括：启用网间协同RRC分集的指示和分集门限；
    所述确定子模块，被配置为：
    根据所述启用网间协同RRC分集的指示，开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；
    根据所述分集门限确定用于发送所述上行RRC消息的连接；
    其中，所述第一通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的一种，所述第二通信系统是：5G通信系统、LTE通信系统和WLAN通信系统中的另一种。
  41. 根据权利要求40所述的装置，其特征在于，所述分集门限包括：第一分集门限和第二分集门限，
    所述确定子模块，被配置为：
    检测全部或指定的所述第一接入网设备的下行信道质量是否小于所述第一分集门限，指定的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备或支持RRC分集的第一接入网设备；
    当小于所述第一分集门限时，检测所述第二接入网设备的下行信道质量是否大于所述第二分集门限；
    当所述第二接入网设备的下行信道质量大于所述第二分集门限时，将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
    将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接。
  42. 根据权利要求40所述的装置，其特征在于，所述分集门限包括：相对分集门限，
    所述确定子模块，被配置为：
    检测最差的所述第二接入网设备的下行信道质量减去最优的所述第一接入网设备的下行信道质量的差值是否大于所述相对分集门限；
    当所述差值大于所述相对分集门限时，将所述第一接入网设备和所述第二接入网设备确定为目标接入网设备；
    将所述终端与所述目标接入网设备之间的至少两条连接，确定为用于发送所述上行RRC消息的连接；
    其中，最优的所述第一接入网设备是所述终端建立初始连接时的第一接入网设备，或，支持RRC分集且具有最优下行信道质量的第一接入网设备，或，支持发送控制面消息且具有最优下行信道质量的第一接入网设备；最差的所述第二接入网设备是支持RRC分集且具有最差下行信道质量的第二接入网设备，或，支持发送控制面消息且具有最差下行信道质量的第二接入网设备。
  43. 根据权利要求26所述的装置，其特征在于，所述RRC分集配置信息包括关闭指示；
    所述确定模块，被配置为根据所述关闭指示关闭所述RRC分集。
  44. 根据权利要求26至43任一所述的装置，其特征在于，所述接收模块，被配置为接收所述接入网设备发送的RRC连接重配置消息，所述RRC连接重配置消息携带有所述RRC分集配置信息。
  45. 一种无线资源控制RRC消息的发送装置，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述装置包括：
    生成模块，被配置为生成所述终端的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    发送模块，被配置为向所述终端发送所述RRC分集配置信息，所述RRC 分集配置信息用于配置所述终端是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  46. 根据权利要求45所述的装置，其特征在于，所述RRC分集配置信息包括：
    启用指示和分集门限；所述启用指示用于指示所述终端启用所述RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载；
    或，
    关闭指示，所述关闭指示用于指示所述终端关闭所述RRC分集。
  47. 根据权利要求45所述的装置，其特征在于，
    所述RRC分集配置信息还包括：最大分集数目n，所述最大分集数目n是所述终端发送相同的所述上行RRC消息时所采用的连接的最大数量。
  48. 根据权利要求45所述的装置，其特征在于，所述RRC分集配置信息包括启用指示和用于指示目标连接的信息单元，所述装置还包括：
    接收模块，被配置为接收所述终端发送的上行参考信号；
    所述生成模块，包括：
    测量子模块，被配置为根据所述上行参考信号测量得到所述连接的上行信道质量；
    确定子模块，被配置为根据所述上行信道质量确定出所述目标连接；
    生成子模块，被配置为生成携带有所述用于指示目标连接的信息单元的RRC分集配置消息。
  49. 根据权利要求45所述的装置，其特征在于，所述RRC分集配置信息包括：
    启用网间协同RRC分集的指示和分集门限；所述启用网间协同RRC分集的指示用于指示所述终端开启在所述第一接入网设备和所述第二接入网设备之间的网间协同RRC分集；所述分集门限用于确定发送所述上行RRC消息的无线承载。
  50. 根据权利要求45至49任一所述的装置，其特征在于，所述发送模块，被配置为向所述终端发送RRC连接重配置信息，所述RRC连接重配置信息携带有所述RRC分集配置信息。
  51. 一种无线资源控制RRC消息的发送装置，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    接收所述接入网设备发送的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    根据所述RRC分集配置信息确定是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  52. 一种无线资源控制RRC消息的发送装置，其特征在于，应用于终端与接入网设备建立有多连接的通信系统中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    生成所述终端的RRC分集配置信息，所述RRC分集配置信息是所述终端启用RRC分集或关闭所述RRC分集时所需的配置信息；
    向所述终端发送所述RRC分集配置信息，所述RRC分集配置信息用于配置所述终端是否启用所述RRC分集，所述RRC分集是通过至少两条连接发送相同的上行RRC消息的发送方式。
  53. 一种无线资源控制RRC消息的发送系统，其特征在于，所述系统包括终端和接入网设备；
    所述终端包括权利要求26至44任一项所述的装置；
    所述接入网设备包括权利要求45至50任一项所述的装置。
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