WO2012126330A1 - 联合传输方法及系统 - Google Patents

联合传输方法及系统 Download PDF

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Publication number
WO2012126330A1
WO2012126330A1 PCT/CN2012/072386 CN2012072386W WO2012126330A1 WO 2012126330 A1 WO2012126330 A1 WO 2012126330A1 CN 2012072386 W CN2012072386 W CN 2012072386W WO 2012126330 A1 WO2012126330 A1 WO 2012126330A1
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WO
WIPO (PCT)
Prior art keywords
access network
network element
user equipment
activation
time
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PCT/CN2012/072386
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English (en)
French (fr)
Inventor
邓云
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012126330A1 publication Critical patent/WO2012126330A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078Timing of allocation

Definitions

  • FIG. 1 is a schematic diagram of a 3GPP access system architecture according to the related art.
  • an architectural diagram of a 3GPP access system includes a radio access network part and a core network part, wherein the radio access network part includes GSM EDGE.
  • GERAN GSM EDGE Radio Access Network
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • both the access network of the GERAN and the UMTS are connected to the Serving General Packet Radio Service Supporting Node (SGSN) of the core network element service, and the mobility of the LTE access network and the core network element
  • the management entity Mobility Management Entity, MME for short
  • the RANTS includes a Base Station Subsystem (BSS), and includes a Base Station Controller (BSC) and a Base Station (BS).
  • the UMTS access network element includes a wireless network.
  • the controller Radio Network Controller, RNC for short
  • NodeB base station
  • the access network element of the LTE is an Evolved NodeB (abbreviated as e B).
  • 3GPP proposes a carrier aggregation (Carrier Aggregation, CA for short) technical solution, which uses multiple carriers (or multiple serving cells) to simultaneously serve user equipment.
  • the existing carrier aggregation scheme mainly utilizes multiple carriers in a single system to simultaneously provide services for user equipment. For example, in UMTS, two or more carriers are used to simultaneously communicate with user equipment, or two or two are used in LTE. The above carrier simultaneously maintains communication with the user equipment.
  • UMTS and LTE long-time
  • different system joint transmission schemes are usually adopted, which may also be called cross-system carrier aggregation.
  • . 2 is a schematic diagram of joint transmission according to the related art. As shown in FIG. 2, the user equipment uses two access technologies simultaneously, and two wireless links are established for transmitting data, which can not only obtain higher throughput.
  • the load balancing between the systems can only be implemented by the method of switching and redirection.
  • the network side can dynamically adjust each user equipment according to the load dynamics of different access systems. The transmission rate on different links can better achieve load balancing.
  • the user equipment adopts a joint transmission scheme the user equipment usually needs hardware and software that support both access technologies.
  • the existing user equipment has only one set of radio frequency transceivers, and the single radio frequency transceiver user equipment can only receive signals of one system or can only send signals to one system, so that joint transmission cannot be adopted.
  • the present invention provides a joint transmission method and system to solve at least the problem that a user equipment of a single radio frequency transceiver in the related art cannot adopt joint transmission.
  • a joint transmission method includes: the access network element of the first access network negotiates the activation time of the user equipment with the access network element of the second access network, wherein the activation time is used for the user equipment to adopt time division multiplexing.
  • the mode is jointly transmitted by the access network element of the first access network and the access network element of the second access network; the access network element of the first access network sends an activation time to the user equipment.
  • the activation time includes at least one of: a start time of activation in the first access network, a start time of activation in the second access network, a duration of activation in the first access network, and a second access The duration of activation in the network, the period of activation.
  • the access network element of the first access network and the access network element of the second access network each include one of the following: a base station of a long term evolution system, a radio network controller of a universal mobile communication system, and a universal mobile communication system. Base station, global mobile communication enhanced data rate Global mobile communication evolution technology base station controller of the radio access network system.
  • the activation time of the user equipment of the access network element of the first access network and the access network element of the second access network includes: the access network element of the first access network is based on the service requirement of the user equipment, and According to the capability information of the user equipment that only communicates with the single access network in a single time, the activation time of the user equipment is negotiated with the access network element of the second access network.
  • a joint transmission method is also provided.
  • the joint transmission method includes: a user equipment receives an activation time of an access network element from a first access network, wherein the user equipment only has the capability of communicating with a single access network at a single time, when activated
  • the access network element of the first access network negotiates with the access network element of the second access network; the user equipment adopts time division multiplexing according to the activation time, and respectively passes through the first access network.
  • the access network element is jointly transmitted with the access network element of the second access network.
  • the activation time includes at least one of: a start time of activation in the first access network, a start time of activation in the second access network, a duration of activation in the first access network, and a second access The duration of activation in the network, the period of activation.
  • the user equipment starts the joint transmission while receiving the activation time.
  • the access network element of the first access network and the access network element of the second access network each include one of the following: a base station of a long term evolution system, a radio network controller of a universal mobile communication system, and a universal mobile communication system. Base station, global mobile communication enhanced data rate Global mobile communication evolution technology base station controller of the radio access network system.
  • a joint transmission system includes an access network element of the first access network, an access network element of the second access network, and a user equipment, where the access network element of the first access network includes:
  • the module is configured to negotiate the activation time of the user equipment with the access network element of the second access network, where the activation time is used by the user equipment to access the network element of the access network of the first access network by using time division multiplexing
  • the access network element of the second access network performs joint transmission; the sending module is configured to send an activation time to the user equipment.
  • a joint transmission system is also provided.
  • the joint transmission system includes an access network element of the first access network, an access network element of the second access network, and a user equipment, where the user equipment includes: a receiving module, configured to receive from the first connection The activation time of the access network element of the access network, wherein the user equipment only has the capability of communicating with the single access network in a single time, and the activation time is through the access network element and the second access of the first access network.
  • the access network module of the network negotiates; the joint transmission module is configured to adopt a time division multiplexing manner according to the activation time, respectively, through the access network element of the first access network and the access network of the second access network
  • the network element performs joint transmission.
  • a joint transmission system includes an access network element of the first access network, an access network element of the second access network, and a user equipment, where the access network element of the first access network includes:
  • the module is configured to negotiate the activation time of the user equipment with the access network element of the second access network, where the activation time is used by the user equipment to access the network element of the access network of the first access network by using time division multiplexing
  • the access network element of the second access network performs joint transmission;
  • the sending module is configured to send an activation time to the user equipment;
  • the user equipment includes: a receiving module, configured to receive an activation time of the access network element from the first access network, where the user equipment only has a single time and a single access
  • the ability of the network to communicate, the activation time is negotiated by the access network element of the first access network and the access network element of the second access network;
  • the joint transmission module is set to use time division multiplexing according to the
  • FIG. 1 is a schematic diagram of a 3GPP access system architecture according to the related art
  • FIG. 2 is a schematic diagram of joint transmission according to the related art
  • FIG. 3 is a flowchart of a joint transmission method according to Embodiment 1 of the present invention
  • 4 is a flowchart of a joint transmission method according to Embodiment 2 of the present invention
  • FIG. 5 is an interaction flowchart of a joint transmission method according to a preferred embodiment of the present invention
  • FIG. 6 is a joint transmission method according to a preferred embodiment 1 of the present invention
  • 7 is a structural block diagram of a joint transmission system according to a first embodiment of the present invention
  • FIG. 8 is a structural block diagram of a joint transmission system according to a second embodiment of the present invention
  • FIG. 9 is a joint transmission system according to a third embodiment of the present invention
  • Structure diagram is a flowchart of a joint transmission method according to Embodiment 1 of the present invention
  • 4 is a flowchart of a joint transmission method according to Embodiment 2 of the present invention
  • FIG. 5 is an interaction flowchart of a joint transmission method according to a preferred embodiment of the present invention
  • FIG. 3 is a flowchart of a joint transmission method according to Embodiment 1 of the present invention. As shown in FIG. 3, the following steps S302 to S304 are included.
  • Step S302 The access network element of the first access network negotiates the activation time of the user equipment with the access network element of the second access network, where the activation time is used by the user equipment to adopt the time division multiplexing manner to respectively pass the first The access network element of the access network and the access network element of the second access network perform joint transmission.
  • Step S304 the access network element of the first access network sends an activation time to the user equipment.
  • a user equipment of a single radio transceiver cannot use joint transmission.
  • the user equipment of the single radio transceiver can be jointly transmitted, thereby improving the data transmission rate.
  • the access network element of the first access network and the access network element of the second access network negotiate the activation time of the user equipment, including: the access network of the first access network Transmitting the activation time to the access network element of the second access network; or: accessing the network element of the second access network to the access network element of the first access network Sending the activation time; or, the access network element of the first access network sends an activation time to an access network element of the second access network, and the access network of the second access network
  • the network element modifies the activation time, and then sends the modified activation time to the access network element of the first access network.
  • the activation time comprises at least one of: a start time of activation in the first access network, a start time of activation in the second access network, a duration of activation in the first access network, and a The duration of activation in the second access network, the period of activation.
  • the access network element of the first access network and the access network element of the second access network each comprise one of the following: a base station of the long term evolution system, a radio network controller of the universal mobile communication system, and a universal mobile Base station of a communication system, a base station controller of a global mobile communication enhanced data rate global mobile communication evolution technology radio access network system.
  • the access network element of the first access network and the access network element of the second access network negotiate the activation time of the user equipment, where: the access network element of the first access network is based on the service of the user equipment.
  • the demand, and the user equipment only has the capability information to communicate with the single access network in a single time, and negotiates the activation time of the user equipment with the access network element of the second access network.
  • Embodiments of the present invention provide a joint transmission method.
  • FIG. 4 is a flowchart of a joint transmission method according to Embodiment 2 of the present invention. As shown in FIG. 4, the following steps S402 to S404 are included.
  • Step S402 the user equipment receives an activation time of an access network element from the first access network, where the user equipment only has the capability of communicating with a single access network in a single time, and the activation time is through the first access network.
  • the access network element is negotiated with the access network element of the second access network.
  • the activation time comprises at least one of: a start time of activation in the first access network, a start time of activation in the second access network, a duration of activation in the first access network, and a The duration of activation in the second access network, the period of activation.
  • the user equipment starts the joint transmission while receiving the activation time.
  • the access network element of the first access network and the access network element of the second access network each comprise one of the following: a base station of the long term evolution system, a radio network controller of the universal mobile communication system, and a universal mobile Base station of a communication system, a base station controller of a global mobile communication enhanced data rate global mobile communication evolution technology radio access network system.
  • a base station of the long term evolution system a radio network controller of the universal mobile communication system
  • a universal mobile Base station of a communication system a base station controller of a global mobile communication enhanced data rate global mobile communication evolution technology radio access network system.
  • the UE1 is connected to the network through the UMTS system, and the UE1 accesses the cell 1 under the jurisdiction of the base station 1.
  • the base station 1 is under the jurisdiction of the RNC.
  • the cell 2 having the same coverage as the cell 1 is under the jurisdiction of the base station 2, and the base station 2 belongs to the LTE system.
  • an Iub interface is established between the RNC and the base station 1. Since the RNC may perform joint transmission with the base station 2 in LTE, a new interface is established between the RNC and the base station 2 for transmitting data and control signaling.
  • the interface establishment between the RNC and the base station 2 can be implemented by an Operation & Maintenance server.
  • UE1 has established a Data Radio Bearer (DRB), which is used here.
  • DRB Data Radio Bearer
  • FIG. 5 is an interaction flowchart of a joint transmission method according to a preferred embodiment of the present invention. As shown in FIG. 5, the following steps S501 to S504 are included.
  • Step S501 The RNC sends a new data radio bearer DRB2 establishment request to the base station 2 through an interface with the base station 2, where the request includes a quality of service parameter (Quality of Service) of the DRB2, so that the base station 2 can allocate wireless resources reasonably.
  • the RNC considers that the UE1 has only one set of radio frequency transceivers, and therefore includes time division information using different access technologies in the setup request, which may specifically be time information (or subframe information) indicating that the UE1 is activated in the UMTS, and indicating that the UE1 is in the UE1.
  • Time information (or subframe information) activated in LTE. 6 is a schematic diagram of a joint transmission method according to a preferred embodiment of the present invention. As shown in FIG.
  • Step S502 After receiving the establishment request of the DRB2, the base station 2 allocates resources for the UE1, for example, allocates a Radio Network Temporary Identifier (RNTI) to be monitored, and saves the activation time information included in the establishment request at an appropriate time.
  • the UE1 is scheduled.
  • RNTI Radio Network Temporary Identifier
  • the base station 2 returns a response to the RNC containing the allocated resource parameters.
  • Step S503 After receiving the response sent by the base station 2, the RNC sends the dedicated signaling to the UE1, where the resource parameter allocated by the base station 2 for the UE1 and the time information activated in the two systems are included.
  • Step S504 after receiving the dedicated signaling sent by the RNC, the UE1 applies the configuration. UE1 may first choose to maintain communication with the RNC for 10 milliseconds and then maintain communication with base station 2 for the next 10 milliseconds. Since UE1 has obtained the resources allocated by the base station 2, signaling and data transmission can be implemented with the base station 2.
  • the RNC and the base station 2 need to establish a data transmission channel for the UE1, including uplink and downlink, and the RNC sends the downlink data packet to the base station 2.
  • the base station 2 In order for the base station 2 to have sufficient downlink data transmission when communicating with the UE1.
  • UE1 can communicate with the UMTS system and the LTE system in a time division multiplexing manner, and respectively transmit data of different DRBs in different systems.
  • the network side can effectively implement load balancing, and can direct different data radio bearers to a lightly loaded system according to the load of different systems in real time.
  • the setup request in step S501 includes time division information using different access technologies.
  • step S502 the base station 2 can modify this, and then notify the RNC by returning a response to the RNC.
  • the UE1 applies the configuration information of the time division multiplexing immediately in step S504, and the UE1 may start to apply the configuration information of the time division multiplexing after a predefined period of time, for example, the UE1 is in the next radio frame (Radio Frame).
  • the configuration information of the time division multiplexing is started at the start time; or the UE1 starts to apply the configuration information of the time division multiplexing when the next system frame number is 0.
  • UE1 maintains communication with the UMTS and LTE systems in sequence in step S504, and UE1 may also first maintain communication with the LTE system and then maintain communication with the UMTS system. Or, in step S504, only the time and period of activation of the UE1 in a single system are configured.
  • the time for the UE1 to be activated in the UMTS system is 10 milliseconds, and the period is 20 milliseconds.
  • the UE1 can still be in step S504.
  • the communication is first maintained with the RNC and then with the base station 2.
  • the radio transceiver of the UE1 needs to switch between two frequencies, which requires an additional period of time. This embodiment is called a frequency conversion time, and the length of the frequency conversion time depends on the hardware.
  • the protocol can pre-specify a minimum required frequency conversion time. When UE1 switches from one system to another, the impact of this time needs to be considered.
  • UE1 moves from UMTS system to LTE system, and the total time required for LTE system activation is required. Contains the frequency conversion time. If the radio processing performance of UE1 is very good, that is, the frequency conversion time is much lower than 1 millisecond, and the conversion time has no effect on the communication, the terminal can ignore the influence of the frequency conversion time on the communication when switching between systems. It should be noted that UE1 maintains communication with the RNC only for half of the period of 20 milliseconds, and the RNC or UE1 may first store data to be transmitted, and transmit data at a time that can be transmitted; or the RNC may reconfigure the spreading used by UE1.
  • the RNC or UE1 can use 10 milliseconds to transfer the data that originally required 20 milliseconds to be transmitted. Therefore, after time division multiplexing, UE1 may not be in the UMTS system. Reduce the transmission rate.
  • This embodiment describes a scenario in which the user equipment has only one set of radio frequency transceivers. In fact, for a user equipment having multiple radio frequency transceivers, the method described in this embodiment may also be used. For such user equipment, only one set is used. RF transceivers can save power consumption.
  • the user equipment UE2 is connected to the network through the LTE system, and the UE2 accesses the cell 3 under the control of the base station 3.
  • the base station 4 in the UMTS is governed by the RNC.
  • the cell 4 under the base station 4 overlaps with the coverage area of the cell 3.
  • DRB Data Radio Bearer
  • the base station 3 Since the real-time transmission rate of the UE2 is large and the base station 3 does not have enough resources to satisfy the UE2, the base station 3 wishes to use the joint transmission to enable the UE2 to obtain more radio resources.
  • the user equipment uses the HSPA technology (the uplink is HSUPA (High Speed Uplink Packet Access) and the downlink is HSDPA (High Speed Downlink Packet Access))
  • the scheduling of the user equipment is performed by the base station, such as the spread spectrum used by the user equipment.
  • the code, the time slot using the spreading code, and the like are all controlled by the base station.
  • the base station 3 expects that the UE 2 can simultaneously use the HSPA technology in the UMTS system, so that an interface is established between the base station 3 and the base station 4 for transmitting control signaling and data.
  • the interface between the base station 3 and the base station 4 can be implemented by an Operation & Maintenance server.
  • the base station 3 decides to use the joint transmission mode to provide the UE2 with more radio resources to meet the rate requirement.
  • the base station 3 finds that the user equipment has only one radio transceiver according to the obtained UE2 capability information, so the base station 3 is the UE2.
  • Step S701 The base station 3 sends a joint transmission request to the base station 4 through the interface with the base station 4, where the request includes the quality of service parameter of the DRB1 (Quality of Service), so that the base station 4 can reasonably allocate radio resources.
  • DRB1 Quality of Service
  • the base station 3 considers that the UE2 has only one set of radio frequency transceivers, and therefore includes time-division information using different access technologies in the request, which may specifically include the start time of activation in the UMTS system and the time of activation in the UMTS system (or In order to adopt the duration of HSPA technology and the period, the start time of activation in the UMTS system as set in the request is an absolute time, the duration of activation in the UMTS system is 30 milliseconds, and the period is 50 milliseconds.
  • Step S702 After receiving the request, the base station 4 allocates resources for the UE2, for example, allocates a Radio Network Temporary Identifier (RNTI) to be monitored, and saves the activation time information included in the request to schedule the UE2 at an appropriate time.
  • the base station 4 returns a response to the base station 3, including the allocated resource parameters.
  • RNTI Radio Network Temporary Identifier
  • Step S703 after receiving the response sent by the base station 4, the base station 3 sends the dedicated signaling to the UE2, where the resource parameter allocated by the base station 4 for the UE2, and the start time of activation in the UMTS system, activated in the UMTS system are included. Time (or the duration of the HSPA technology) and the period.
  • Step S704 after receiving the dedicated signaling sent by the base station 3, the UE2 saves the configuration. The UE 2 maintains communication with the base station 4 in the corresponding time slot according to the start time included in the signaling for a duration of 30 milliseconds, and then maintains communication with the base station 3 within the next 20 milliseconds.
  • UE2 Since UE2 has obtained the resources allocated by the base station 4, signaling and data transmission can be implemented with the base station 4.
  • UE2 implements communication with UMTS and LTE systems in a time division multiplexing manner, and transmits data of the same DRB in different systems. Through this method, the network side can effectively implement load balancing, and can adjust part of data transmission to a lightly loaded system according to the load of different systems in real time. It should be noted that after the base station 3 receives the response from the base station 4, the base station 3 and the base station 4 need to establish a data transmission channel for the UE2, including uplink and downlink, and the base station 3 transmits the UE2 to the base station 4.
  • the base station 3 needs to add a new data distribution function, select a partial data packet to be sent to the base station 4, and transmit to the UE2 through the base station 4.
  • UE2 receives the data packets sent by the two base stations respectively, and needs to implement the combination.
  • UE2 can multiplex the existing radio link control layer (Radio Link Control) to merge and reassemble the data packets, so that the application layer is still Can receive complete packets.
  • Radio Link Control Radio Link Control
  • the base station 4 receives the response in the UMTS system.
  • Time information in the activation (including start time, duration, period).
  • This embodiment describes a scenario in which UMTS and LTE systems are jointly transmitted, and is in fact applicable to both the GERAN system and the LTE system, or the GERAN system and the UMTS system.
  • an interface is established between the base station controller in the GERAN system and the base station in the LTE system for transmitting signaling and data, and the base stations of the two systems negotiate to determine that the user equipment is in a different system.
  • the time of activation, and then notify the user equipment can realize the joint transmission method of time division multiplexing, which can effectively balance the load between the two systems.
  • the user equipment UE1 is connected to the network through the UMTS system, and the UE1 accesses the cell 1 under the jurisdiction of the base station 1.
  • the base station 1 is under the jurisdiction of the RNC.
  • the cell 2 having the same coverage as the cell 1 is under the jurisdiction of the base station 2, and the base station 2 belongs to the LTE system.
  • UE1 has established a Data Radio Bearer (DRB), which is represented by DRB1.
  • DRB Data Radio Bearer
  • UE1 wants to establish DRB2 because of new service requirements.
  • the RNC decides to use the joint transmission mode to establish the DRB2 through the radio resources of the cell 2.
  • the RNC finds that the user equipment has only one set of radio frequency transceivers according to the obtained capability information of the UE1, and the RNC decides to implement joint transmission by means of time division multiplexing. In this embodiment, no interface is established between the RNC and the base station 2, and signaling and data transmission between the RNC and the base station 2 are transmitted through the core network.
  • the RNC and the base station 2 negotiate the activation time in different systems through the core network (such as the activation time, period in the UMTS system; or the activation time, period in the LTE system), and then notify the UE1 by the RNC, and the UE1 determines according to the activation time.
  • UE1 implements joint communication with different systems.
  • the embodiment of the invention provides a joint transmission system, which can be used to implement the joint transmission method described above.
  • 7 is a structural block diagram of a joint transmission system according to Embodiment 1 of the present invention.
  • an access network element 72 including a first access network, an access network element 74 of a second access network, and The user equipment 76, wherein the access network element 72 of the first access network includes a negotiation module 722 and a sending module 724.
  • the negotiation module 722 is configured to negotiate the activation time of the user equipment 76 with the access network element 74 of the second access network, where the activation time is used by the user equipment 76 to access the first access network in a time division multiplexing manner.
  • the incoming network element 72 is jointly transmitted with the access network element 74 of the second access network; the sending module 724 is connected to the negotiation module 722, and is configured to send the activation time negotiated by the negotiation module 722 to the user equipment 76.
  • the embodiment of the invention further provides a joint transmission system, which can be used to implement the joint transmission method described above.
  • 8 is a structural block diagram of a joint transmission system according to Embodiment 2 of the present invention. As shown in FIG. 8, an access network element 82 including a first access network, an access network element 84 of a second access network, and User equipment 86, wherein user equipment 86 includes a receiving module 862 and a joint transmission module 864. The structure is described in detail below.
  • the receiving module 862 is configured to receive an activation time of the access network element 82 from the first access network, where the user equipment 86 only has the capability of communicating with a single access network in a single time, and the activation time is through the first connection.
  • the access network element 82 of the network is negotiated with the access network element 84 of the second access network;
  • the joint transmission module 864 is connected to the receiving module 862, and is set to be time-multiplexed according to the activation time received by the receiving module 862.
  • the access network element 82 of the first access network and the access network element 84 of the second access network are jointly transmitted.
  • the embodiment of the invention further provides a joint transmission system, which can be used to implement the joint transmission method described above.
  • FIG. 9 is a structural block diagram of a joint transmission system according to Embodiment 3 of the present invention.
  • an access network element 92 including a first access network, an access network element 94 of a second access network, and The user equipment 96, where the access network element 92 of the first access network includes a negotiation module 922, a sending module 924, and the user equipment 96 includes a receiving module 962 and a joint transmission module 964.
  • the negotiation module 922 is configured to negotiate the activation time of the user equipment 96 with the access network element 94 of the second access network, where the activation time is used by the user equipment 96 to access the first access network in a time division multiplexing manner.
  • the network access network element 92 and the access network element 94 of the second access network perform joint transmission;
  • the sending module 924 is connected to the negotiation module 922, and is configured to send the activation time negotiated by the negotiation module 922 to the user equipment 96.
  • the receiving module 962 is connected to the sending module 924, and configured to receive the access network element from the first access network.
  • the activation time sent by the sending module 924 of 92 wherein the user equipment 96 only has the ability to communicate with a single access network in a single time, and the activation time is through the access network element 92 and the second access of the first access network.
  • the access network element 94 of the network negotiates; the joint transmission module 964 is connected to the receiving module 962, and is configured to access the first access network according to the activation time received by the receiving module 962 in a time division multiplexing manner.
  • the network element 92 is jointly transmitted with the access network element 94 of the second access network.
  • a joint transmission method and system are provided.
  • the user equipment of the single radio transceiver can be jointly transmitted, thereby improving the data transmission rate.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

Abstract

本发明公开了一种联合传输方法及系统,该方法包括:第一接入网的接入网网元与第二接入网的接入网网元协商用户设备的激活时间,其中激活时间用于用户设备采用时分复用的方式分别通过第一接入网的接入网网元与第二接入网的接入网网元进行联合传输;第一接入网的接入网网元向用户设备发送激活时间。本发明通过使用协商的激活时间,可以保证该单射频收发机的用户设备进行联合传输,长提高数据传输速率。

Description

联合传输方法及系统 技术领域 本发明涉及通信领域, 具体而言, 涉及一种联合传输方法及系统。 背景技术 图 1是根据相关技术的 3GPP接入系统架构的示意图, 如图 1所示, 3GPP接入系 统的架构图包括无线接入网部分和核心网部分,其中无线接入网部分包括 GSM EDGE 无线接入网 (GSM EDGE Radio Access Network, 简称为 GERAN)、 通用移动通信系 统 (Universal Mobile Telecommunications System, 简称为 UMTS) 接入网和长期演进 (Long-Term Evolution, 简称为 LTE) 接入网。 具体地, GERAN和 UMTS的接入网 均与核心网网元服务通用分组无线业务支持节点( Serving General Packet Radio Service Supporting Node, 简称为 SGSN) 相连, LTE的接入网与核心网网元移动性管理实体 (Mobility Management Entity,简称 MME)相连。 GERAN是指基站子系统(Base Station Subsystem, 简称为 BSS), 包括基站控制器(Base Station Controller, 简称为 BSC)和 基站 (Base Station, 简称为 BS); UMTS 的接入网网元包括无线网络控制器 (Radio Network Controller, 简称为 RNC) 和基站 (NodeB); LTE的接入网网元是演进基站 (Evolved NodeB, 简称为 e B)。 为了确保连接态的用户设备(User Equipment, 简称 为 UE) 能够在不同的接入系统之间自由的移动, SGSN和 MME之间建有 S3接口, 该接口可以实现终端在不同接入系统间的切换。 为了实现更高的传输速率, 3GPP提出了载波聚合 (Carrier Aggregation, 简称为 CA) 的技术方案, 利用多个载波 (或多个服务小区) 同时为用户设备服务。 现有的载 波聚合方案主要利用单一系统内的多个载波同时为用户设备提供服务, 如 UMTS中利 用 2个或 2个以上的载波同时与用户设备保持通信, 或者 LTE中利用 2个或 2个以上 的载波同时与用户设备保持通信。 然而在实际的网络中, 由于载波频率数量的限制, 一些移动运营商没有足够的频率同时部署多个 UMTS和 LTE系统,移动运营商会根据 接入网络的用户设备数量调整 UMTS和 LTE的载频数。 由于 UMTS系统和 LTE系统会长期共存, 当单个系统的容量(载频的限制)不足 以提供高的传输速率时, 通常采用不同的系统联合传输的方案, 这也可以称为跨系统 的载波聚合。 图 2是根据相关技术的联合传输的示意图, 如图 2所示, 用户设备同时 采用两种接入技术, 建立了两条无线链路用于传输数据, 这不仅可以获得更高的吞吐 量, 而且可以达到较好的负载均衡的效果。 在没有采用联合传输的方案之前, 系统间 的负载均衡只能通过切换、 重定向的方法实施, 如果采用联合传输的方案, 网络侧可 以根据不同接入系统的负载动态的调整每个用户设备在不同链路上的传输速率, 可以 更好的实现负载均衡。 如果用户设备采用联合传输的方案, 该用户设备通常需要同时支持两种接入技术 的硬件和软件。 但是, 现有的用户设备只有一套射频收发机, 该单射频收发机用户设 备只能接收一个系统的信号或者只能向一个系统发送信号, 从而无法采用联合传输。 发明内容 本发明提供了一种联合传输方法及系统, 以至少解决相关技术中单射频收发机的 用户设备无法采用联合传输的问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种联合传输方法。 根据本发明的联合传输方法包括: 第一接入网的接入网网元与第二接入网的接入 网网元协商用户设备的激活时间, 其中激活时间用于用户设备采用时分复用的方式分 别通过第一接入网的接入网网元与第二接入网的接入网网元进行联合传输; 第一接入 网的接入网网元向用户设备发送激活时间。 激活时间包括以下至少之一: 在第一接入网中激活的起始时间、 在第二接入网中 激活的起始时间、 在第一接入网中激活的时长、 在第二接入网中激活的时长、 激活的 周期。 第一接入网的接入网网元和第二接入网的接入网网元均包括以下之一: 长期演进 系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通信系统的基站、 全球 移动通信增强型数据速率全球移动通信演进技术无线接入网系统的基站控制器。 第一接入网的接入网网元与第二接入网的接入网网元协商用户设备的激活时间包 括: 第一接入网的接入网网元根据用户设备的业务需求, 以及根据用户设备仅具备在 单一时间与单一接入网进行通信的能力信息, 与第二接入网的接入网网元协商用户设 备的激活时间。 为了实现上述目的, 根据本发明的一个方面, 还提供了一种联合传输方法。 根据本发明的联合传输方法包括: 用户设备接收到来自第一接入网的接入网网元 的激活时间, 其中用户设备仅具备在单一时间与单一接入网进行通信的能力, 激活时 间是通过第一接入网的接入网网元与第二接入网的接入网网元协商的; 用户设备根据 激活时间, 采用时分复用的方式, 分别通过第一接入网的接入网网元与第二接入网的 接入网网元进行联合传输。 激活时间包括以下至少之一: 在第一接入网中激活的起始时间、 在第二接入网中 激活的起始时间、 在第一接入网中激活的时长、 在第二接入网中激活的时长、 激活的 周期。 在激活时间不包括激活的起始时间的情况下, 用户设备在接收到激活时间的同时 开始进行联合传输。 第一接入网的接入网网元和第二接入网的接入网网元均包括以下之一: 长期演进 系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通信系统的基站、 全球 移动通信增强型数据速率全球移动通信演进技术无线接入网系统的基站控制器。 为了实现上述目的, 根据本发明的另一个方面, 提供了一种联合传输系统。 根据本发明的联合传输系统包括第一接入网的接入网网元、 第二接入网的接入网 网元和用户设备, 其中第一接入网的接入网网元包括: 协商模块, 设置为与第二接入 网的接入网网元协商用户设备的激活时间, 其中激活时间用于用户设备采用时分复用 的方式分别通过第一接入网的接入网网元与第二接入网的接入网网元进行联合传输; 发送模块, 设置为向用户设备发送激活时间。 为了实现上述目的, 根据本发明的另一个方面, 还提供了一种联合传输系统。 根据本发明的联合传输系统包括第一接入网的接入网网元、 第二接入网的接入网 网元和用户设备, 其中用户设备包括: 接收模块, 设置为接收来自第一接入网的接入 网网元的激活时间, 其中用户设备仅具备在单一时间与单一接入网进行通信的能力, 激活时间是通过第一接入网的接入网网元与第二接入网的接入网网元协商的; 联合传 输模块, 设置为根据激活时间, 采用时分复用的方式, 分别通过第一接入网的接入网 网元与第二接入网的接入网网元进行联合传输。 为了实现上述目的, 根据本发明的另一个方面, 又提供了一种联合传输系统。 根据本发明的联合传输系统包括第一接入网的接入网网元、 第二接入网的接入网 网元和用户设备, 其中第一接入网的接入网网元包括: 协商模块, 设置为与第二接入 网的接入网网元协商用户设备的激活时间, 其中激活时间用于用户设备采用时分复用 的方式分别通过第一接入网的接入网网元与第二接入网的接入网网元进行联合传输; 发送模块, 设置为向用户设备发送激活时间; 用户设备包括: 接收模块, 设置为接收 来自第一接入网的接入网网元的激活时间, 其中用户设备仅具备在单一时间与单一接 入网进行通信的能力, 激活时间是通过第一接入网的接入网网元与第二接入网的接入 网网元协商的; 联合传输模块, 设置为根据激活时间, 采用时分复用的方式, 分别通 过第一接入网的接入网网元与第二接入网的接入网网元进行联合传输。 本发明通过使用协商的激活时间, 可以保证该单射频收发机的用户设备进行联合 传输, 从而提高数据传输速率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据相关技术的 3GPP接入系统架构的示意图; 图 2是根据相关技术的联合传输的示意图; 图 3是根据本发明实施例一的联合传输方法的流程图; 图 4是根据本发明实施例二的联合传输方法的流程图; 图 5是根据本发明优选实施例一的联合传输方法的交互流程图; 图 6是根据本发明优选实施例一的联合传输方法的示意图; 图 7是根据本发明实施例一的联合传输系统的结构框图; 图 8是根据本发明实施例二的联合传输系统的结构框图; 图 9是根据本发明实施例三的联合传输系统的结构框图。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特征可以相 互组合。 下面将参考附图并结合实施例来详细说明本发明。 本发明实施例提供了一种联合传输方法。 图 3是根据本发明实施例一的联合传输 方法的流程图, 如图 3所示, 包括如下的步骤 S302至步骤 S304。 步骤 S302,第一接入网的接入网网元与第二接入网的接入网网元协商用户设备的 激活时间, 其中激活时间用于用户设备采用时分复用的方式分别通过第一接入网的接 入网网元与第二接入网的接入网网元进行联合传输。 步骤 S304, 第一接入网的接入网网元向用户设备发送激活时间。 相关技术中, 单射频收发机的用户设备无法采用联合传输。 本发明实施例中, 通 过使用协商的激活时间, 可以保证该单射频收发机的用户设备进行联合传输, 从而提 高数据传输速率。 需要说明的是, 所述第一接入网的接入网网元与第二接入网的接入网网元协商用 户设备的激活时间包括: 所述第一接入网的接入网网元向所述第二接入网的接入网网 元发送所述激活时间; 或者, 所述第二接入网的接入网网元向所述第一接入网的接入 网网元发送所述激活时间; 或者, 所述第一接入网的接入网网元向所述第二接入网的 接入网网元发送激活时间, 所述第二接入网的接入网网元修改所述激活时间, 然后向 所述第一接入网的接入网网元发送修改后的激活时间。 优选地, 激活时间包括以下至少之一: 在第一接入网中激活的起始时间、 在第二 接入网中激活的起始时间、在第一接入网中激活的时长、在第二接入网中激活的时长、 激活的周期。 优选地, 第一接入网的接入网网元和第二接入网的接入网网元均包括以下之一: 长期演进系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通信系统的基 站、 全球移动通信增强型数据速率全球移动通信演进技术无线接入网系统的基站控制 器。 优选地, 第一接入网的接入网网元与第二接入网的接入网网元协商用户设备的激 活时间包括: 第一接入网的接入网网元根据用户设备的业务需求, 以及根据用户设备 仅具备在单一时间与单一接入网进行通信的能力信息, 与第二接入网的接入网网元协 商用户设备的激活时间。 本发明实施例提供了一种联合传输方法。 图 4是根据本发明实施例二的联合传输 方法的流程图, 如图 4所示, 包括如下的步骤 S402至步骤 S404。 步骤 S402, 用户设备接收到来自第一接入网的接入网网元的激活时间, 其中用户 设备仅具备在单一时间与单一接入网进行通信的能力, 激活时间是通过第一接入网的 接入网网元与第二接入网的接入网网元协商的。 步骤 S404, 用户设备根据激活时间, 采用时分复用的方式, 分别通过第一接入网 的接入网网元与第二接入网的接入网网元进行联合传输。 优选地, 激活时间包括以下至少之一: 在第一接入网中激活的起始时间、 在第二 接入网中激活的起始时间、在第一接入网中激活的时长、在第二接入网中激活的时长、 激活的周期。 优选地, 在激活时间不包括激活的起始时间的情况下, 用户设备在接收到激活时 间的同时开始进行联合传输。 优选地, 第一接入网的接入网网元和第二接入网的接入网网元均包括以下之一: 长期演进系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通信系统的基 站、 全球移动通信增强型数据速率全球移动通信演进技术无线接入网系统的基站控制 器。 下面将结合实例对本发明实施例的实现过程进行详细描述。 优选实施例一
UE1通过 UMTS系统接入网络处于连接状态, UE1接入基站 1所辖小区 1, 基站 1由 RNC管辖。与小区 1具有相同覆盖的小区 2由基站 2管辖,基站 2属于 LTE系统。 在 UMTS系统中, RNC与基站 1之间建有 Iub接口。 由于 RNC可能与 LTE中的 基站 2实施联合传输, 因此 RNC与基站 2之间建立了新的接口,用于传递数据和控制 信令。 RNC与基站 2之间的接口建立可以由操作与维护 (Operation & Maintenance) 服务器实施。 UE1 已经建立了一条数据无线承载 (Data Radio Bearer, 简称为 DRB), 此处用
DRBl表示。 UEl 由于有新的业务需求, 希望建立 DRB2, 然而由于 DRB2所要求的 传输速率较高, 小区 1的可用资源满足不了 DRB2的要求。 RNC决定采用联合传输的 方式, 通过小区 2的无线资源建立 DRB2, RNC根据已经获得的 UE1的能力信息, 发 现该用户设备只有一套射频收发机,因此 RNC为 UE1配置时分复用的联合传输方式。 图 5是根据本发明优选实施例一的联合传输方法的交互流程图, 如图 5所示, 包 括如下的步骤 S501至步骤 S504。 步骤 S501, RNC通过与基站 2之间的接口向基站 2发送新的数据无线承载 DRB2 的建立请求, 在该请求中包含 DRB2的服务质量参数 (Quality of Service), 以便基站 2能够合理的分配无线资源。 RNC考虑到 UE1只有一套射频收发机, 因此在建立请求 中还包括采用不同接入技术的时分信息, 具体可以是指明 UE1在 UMTS中激活的时 间信息 (或子帧信息), 以及指明 UE1在 LTE中激活的时间信息 (或子帧信息)。 图 6是根据本发明优选实施例一的联合传输方法的示意图, 如图 6所示, UE1在 UMTS中激活时间为 10毫秒, UE1在 LTE中激活时间为紧接着的 10毫秒。 需要说明 的是, 图 6中仅说明针对下行的接收, 事实上对于 UE上行发送也适用。 此处需要说明的是, RNC与基站 2之间已经实现了同步, 或者获知了对方的无线 帧的起始位置。 步骤 S502, 基站 2收到 DRB2的建立请求后, 为 UE1分配资源, 如分配需要监 听的无线网络临时标识 RNTI (Radio Network Temporary Identifier), 同时保存建立请 求中包含的激活时间信息以便在合适的时间调度该 UE1。 基站 2向 RNC返回响应, 包含分配的资源参数。 步骤 S503, RNC收到基站 2发来的响应后, 向 UE1发送专用信令, 其中包含基 站 2为 UE1分配的资源参数, 以及在两个系统中激活的时间信息。 步骤 S504, UE1收到 RNC发来的专用信令后, 应用该配置。 UE1可以首先选择 与 RNC保持 10毫秒的通信, 然后在紧接着的 10毫秒与基站 2保持通信。 由于 UE1 已经获得基站 2分配的资源, 可以与基站 2实现信令和数据的传输。 此处需要说明的是, 在 RNC收到基站 2发来的响应后, RNC与基站 2之间需要 建立关于 UE1的数据传输通道, 包括上行和下行, 同时 RNC向基站 2发送下行的数 据包, 以便基站 2在与 UE1通信时有足够的下行数据传输。 至此, UE1可以采用时分复用的方式与 UMTS系统和 LTE系统共同进行通信, 分别在不同的系统中传输不同 DRB的数据。网络侧通过这种方法,可以有效的实施负 载均衡, 能够实时根据不同系统的负载,将不同的数据无线承载引导到负载轻的系统。 本实施例还有其他的实现方式,在步骤 S501的建立请求中包含了采用不同接入技 术的时分信息, 在步骤 S502中基站 2可以对此做出修改, 然后通过向 RNC返回响应 告知 RNC最后协商成功的时分信息; 或者, 在步骤 S501的建立请求中没有包含采用不同接入技术的时分信息,基站 2收到请 求后, 分配了在 LTE系统激活的时间信息, 然后向 RNC返回的响应中包含分配的时 间信息, RNC收到后确定在 UMTS系统中激活的时间信息。 在本实施例中, UEl在步骤 S504中立即应用时分复用的配置信息, UE1也可以 在预定义的一段时间之后开始应用时分复用的配置信息, 如 UE1 在下一个无线帧 (Radio Frame)的起始时刻开始应用时分复用的配置信息; 或者 UE1在下一次系统帧 号 (System Frame Number) 为 0时开始应用时分复用的配置信息。 本实施例中, UE1在步骤 S504中, 依次与 UMTS、 LTE系统保持通信, UE1也 可以首先与 LTE系统保持通信, 然后与 UMTS系统保持通信。 或者在步骤 S504中, 仅配置 UE1在单个系统中激活的时间、 以及周期, 如配置 UE1在 UMTS系统中激活 的时间是 10毫秒,周期是 20毫秒, UE1收到后,仍然可以如步骤 S504中首先与 RNC 保持通信, 然后与基站 2保持通信。 UE1在与 UMTS系统和 LTE系统分别通信时, UE1的射频收发机需要在两个频率间切换, 这需要额外的一段时间, 本实施例称之为 频率转换时间, 频率转换时间的长短取决于硬件, 协议可以预先规定一个最低要求的 频率转换时间, UE1从一个系统转换到另一个系统时, 需要考虑这个时间的影响, 比 如 UE1从 UMTS系统转到 LTE系统, 在 LTE系统激活的总的时间需要包含频率转换 时间。 如果 UE1的射频处理性能十分优良, 即频率转换时间远低于 1毫秒, 该转换时 间对通信没有影响, 则终端在系统间转换时,可以忽略该频率转换时间对通信的影响。 需要说明的是, UE1在 20毫秒的周期中仅有一半时间与 RNC保持通信, RNC或 UE1可以先储存需要传输的数据, 在可以传输的时间传递数据; 或者 RNC可以重配 置 UE1使用的扩频因子, 如把原先使用的扩频因子减小一半, 则 RNC或 UE1可以利 用 10毫秒的时间传递原先需要 20毫秒才能传输的数据, 因此采用时分复用的方式之 后, UE1在 UMTS系统中可以不降低传输速率。 本实施例描述了用户设备只有一套射频收发机的场景, 事实上对于拥有多套射频 收发机的用户设备, 也可以采用本实施例所述的方法, 对于这类用户设备, 只用一套 射频收发机可以节省功率消耗。 优选实施例二 用户设备 UE2通过 LTE系统接入网络处于连接状态,UE2接入基站 3所辖小区 3。
UMTS中的基站 4由 RNC管辖。 基站 4所辖小区 4与小区 3的覆盖区域重叠。
UE2已经建立了一条数据无线承载 DRB (Data Radio Bearer),此处用 DRB1表示。 由于 UE2的实时传输速率很大, 基站 3没有足够的资源满足 UE2, 因此基站 3希望使 用联合传输的方式使得 UE2能够获得更多的无线资源。 在 UMTS系统,如果用户设备使用 HSPA技术(上行是 HSUPA(High Speed Uplink Packet Access ), 下行是 HSDPA ( High Speed Downlink Packet Access ) ), 对用户设备的 调度由基站负责, 如用户设备使用的扩频码、 使用扩频码的时隙等均由基站控制。 本 实施例中,基站 3希望 UE2能够同时使用 UMTS系统中 HSPA技术, 因此基站 3和基 站 4之间建立了接口, 用于传输控制信令和数据。 基站 3和基站 4之间的接口可以由 操作与维护 (Operation & Maintenance) 服务器实施。 基站 3决定采用联合传输的方式,为 UE2提供更多的无线资源以满足其速率需求, 基站 3根据已经获得的 UE2的能力信息, 发现该用户设备只有一套射频收发机, 因此 基站 3为 UE2配置时分复用的联合传输方式, 其具体的实现流程为: 步骤 S701 , 基站 3通过与基站 4之间的接口向基站 4发送联合传输请求, 在该请 求中包含 DRB1的服务质量参数 (Quality of Service), 以便基站 4能够合理的分配无 线资源。基站 3考虑到 UE2只有一套射频收发机, 因此在请求中还包括采用不同接入 技术的时分信息,具体可以包括在 UMTS系统中激活的起始时间、在 UMTS系统中激 活的时间 (或者称为采用 HSPA技术的时长) 以及周期, 如请求中设置在 UMTS系统 中激活的起始时间是某个绝对时间、 在 UMTS系统中激活的时长是 30毫秒, 周期是 50毫秒。 即在对应的起始时间, UE2采用 HSPA技术与基站 4进行通信 30毫秒, 然 后与基站 3进行通信 20毫秒(50— 30 = 20); 之后再次与基站 4进行通信 30毫秒, 如 此一直循环下去, 直至基站 3终止联合传输的方式。 步骤 S702, 基站 4收到请求后, 为 UE2分配资源, 如分配需要监听的无线网络 临时标识 RNTI (Radio Network Temporary Identifier), 同时保存请求中包含的激活时 间信息以便在合适的时间调度该 UE2。 基站 4向基站 3返回响应, 包含分配的资源参 数。 步骤 S703 , 基站 3收到基站 4发来的响应后, 向 UE2发送专用信令, 其中包含 基站 4为 UE2分配的资源参数, 以及在 UMTS系统中激活的起始时间、 在 UMTS系 统中激活的时间 (或者称为采用 HSPA技术的时长) 以及周期。 步骤 S704, UE2收到基站 3发来的专用信令后, 保存该配置。 UE2根据信令中包 含的起始时间, 在对应的时隙与基站 4保持通信, 持续时间 30毫秒, 然后在紧接着的 20毫秒内与基站 3保持通信。 由于 UE2已经获得基站 4分配的资源, 可以与基站 4 实现信令和数据的传输。 UE2采用时分复用的方式实现了与 UMTS和 LTE系统共同进行通信, 分别在不 同的系统中传输相同 DRB的数据。 网络侧通过这种方法, 可以有效的实施负载均衡, 能够实时根据不同系统的负载, 将部分数据传输调整到负载较轻的系统中。 此处需要说明的是, 在基站 3收到基站 4发来的响应后, 基站 3与基站 4之间需 要建立关于 UE2的数据传输通道, 包括上行和下行, 同时基站 3向基站 4发送该 UE2 的部分下行数据包, 以便基站 4在与 UE2通信时有足够的下行数据传输, 基站 3需要 新增数据分发的功能, 选出部分数据包发送给基站 4, 通过基站 4向 UE2传输。 UE2 收到两个基站分别发送过来的数据包, 需要实现合并, UE2可以复用现有的无线链路 控制层 (Radio Link Control) 的合并重组的功能, 实现数据包的合并, 这样应用层仍 然可以接收完整的数据包。 本实施例还有其他的实现方式,如步骤 S701中只有联合传输的请求,没有包含采 用不同接入技术的时分信息, 基站 4 收到请求后, 在向基站 3 返回的响应中包含在 UMTS系统中激活的时间信息 (包括起始时间、 时长、 周期)。 本实施例描述了 UMTS和 LTE系统联合传输的场景,事实上对于 GERAN系统和 LTE系统、或者 GERAN系统和 UMTS系统同样适用。如对于 GERAN系统和 LTE系 统联合传输的场景, GERAN系统中的基站控制器与 LTE系统中的基站之间建立接口, 用于传递信令和数据, 两个系统的基站协商确定用户设备在不同系统中激活的时间, 然后通知用户设备, 就可以实现时分复用的联合传输方法, 可以有效的平衡两个系统 间的负载。 优选实施例三 用户设备 UE1通过 UMTS系统接入网络处于连接状态, UE1接入基站 1所辖小 区 1, 基站 1由 RNC管辖。 与小区 1具有相同覆盖的小区 2由基站 2管辖, 基站 2属 于 LTE系统。
UE1已经建立了一条数据无线承载 DRB (Data Radio Bearer),此处用 DRB1表示。 UE1由于有新的业务需求, 希望建立 DRB2, 然而由于 DRB2所要求的传输速率较高, 小区 1的可用资源满足不了 DRB2的要求。 RNC决定采用联合传输的方式, 通过小区 2的无线资源建立 DRB2, RNC根据已经获得的 UE1的能力信息, 发现该用户设备只 有一套射频收发机, RNC决定采用时分复用的方式实现联合传输。在本实施例中, RNC 与基站 2之间没有建立接口, RNC与基站 2之间的信令和数据传输均通过核心网传输。 RNC与基站 2通过核心网协商在不同系统中的激活时间(如在 UMTS系统中的激 活时间、 周期; 或者在 LTE系统中的激活时间、 周期), 然后由 RNC通知 UE1, UE1 根据激活时间确定与不同系统通信的时间。 由此 UE1实现与不同系统的联合通信。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是在某些情况下, 可 以以不同于此处的顺序执行所示出或描述的步骤。 本发明实施例提供了一种联合传输系统, 该联合传输系统可以用于实现上述联合 传输方法。 图 7是根据本发明实施例一的联合传输系统的结构框图, 如图 7所示, 包 括第一接入网的接入网网元 72、 第二接入网的接入网网元 74和用户设备 76, 其中第 一接入网的接入网网元 72包括协商模块 722, 发送模块 724。 下面对其结构进行详细 描述。 协商模块 722, 设置为与第二接入网的接入网网元 74协商用户设备 76的激活时 间,其中激活时间用于用户设备 76采用时分复用的方式分别通过第一接入网的接入网 网元 72与第二接入网的接入网网元 74进行联合传输; 发送模块 724, 连接至协商模 块 722, 设置为向用户设备 76发送协商模块 722协商的激活时间。 本发明实施例还提供了一种联合传输系统, 该联合传输系统可以用于实现上述联 合传输方法。 图 8是根据本发明实施例二的联合传输系统的结构框图, 如图 8所示, 包括第一接入网的接入网网元 82、 第二接入网的接入网网元 84和用户设备 86, 其中 用户设备 86包括接收模块 862和联合传输模块 864。 下面对其结构进行详细描述。 接收模块 862, 设置为接收来自第一接入网的接入网网元 82的激活时间, 其中用 户设备 86仅具备在单一时间与单一接入网进行通信的能力,激活时间是通过第一接入 网的接入网网元 82与第二接入网的接入网网元 84协商的; 联合传输模块 864, 连接 至接收模块 862, 设置为根据接收模块 862接收的激活时间, 采用时分复用的方式, 分别通过第一接入网的接入网网元 82与第二接入网的接入网网元 84进行联合传输。 本发明实施例又提供了一种联合传输系统, 该联合传输系统可以用于实现上述联 合传输方法。 图 9是根据本发明实施例三的联合传输系统的结构框图, 如图 9所示, 包括第一接入网的接入网网元 92、 第二接入网的接入网网元 94和用户设备 96, 其中 第一接入网的接入网网元 92包括协商模块 922, 发送模块 924,用户设备 96包括接收 模块 962和联合传输模块 964。 下面对其结构进行详细描述。 协商模块 922, 设置为与第二接入网的接入网网元 94协商用户设备 96的激活时 间,其中激活时间用于用户设备 96采用时分复用的方式分别通过第一接入网的接入网 网元 92与第二接入网的接入网网元 94进行联合传输; 发送模块 924, 连接至协商模 块 922, 设置为向用户设备 96发送协商模块 922协商的激活时间。 接收模块 962, 连接至发送模块 924, 设置为接收来自第一接入网的接入网网元
92的发送模块 924发送的激活时间, 其中用户设备 96仅具备在单一时间与单一接入 网进行通信的能力,激活时间是通过第一接入网的接入网网元 92与第二接入网的接入 网网元 94协商的; 联合传输模块 964,连接至接收模块 962,设置为根据接收模块 962 接收的激活时间,采用时分复用的方式, 分别通过第一接入网的接入网网元 92与第二 接入网的接入网网元 94进行联合传输。 需要说明的是, 装置实施例中描述的联合传输系统对应于上述的方法实施例, 其 具体的实现过程在方法实施例中已经进行过详细说明, 在此不再赘述。 综上所述, 根据本发明的上述实施例, 提供了一种联合传输方法及系统。 本发明 通过使用协商的激活时间, 可以保证该单射频收发机的用户设备进行联合传输, 从而 提高数据传输速率。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 或者将它们分别制作成各个集成电路模 块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明 不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种联合传输方法, 包括:
第一接入网的接入网网元与第二接入网的接入网网元协商用户设备的激活 时间, 其中所述激活时间用于用户设备采用时分复用的方式分别通过所述第一 接入网的接入网网元与所述第二接入网的接入网网元进行联合传输;
所述第一接入网的接入网网元向所述用户设备发送所述激活时间。
2. 根据权利要求 1所述的方法, 其中, 所述激活时间包括以下至少之一: 在所述 第一接入网中激活的起始时间、 在所述第二接入网中激活的起始时间、 在所述 第一接入网中激活的时长、 在所述第二接入网中激活的时长、 激活的周期。
3. 根据权利要求 1或 2所述的方法, 其中, 所述第一接入网的接入网网元和所述 第二接入网的接入网网元均包括以下之一:
长期演进系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通 信系统的基站、 全球移动通信增强型数据速率全球移动通信演进技术无线接入 网系统的基站控制器。
4. 根据权利要求 1或 2所述的方法, 其中, 第一接入网的接入网网元与第二接入 网的接入网网元协商用户设备的激活时间包括: 所述第一接入网的接入网网元 根据所述用户设备的业务需求, 以及根据所述用户设备仅具备在单一时间与单 一接入网进行通信的能力信息, 与所述第二接入网的接入网网元协商所述用户 设备的激活时间。
5. 一种联合传输方法, 包括:
用户设备接收到来自第一接入网的接入网网元的激活时间, 其中所述用户 设备仅具备在单一时间与单一接入网进行通信的能力, 所述激活时间是通过所 述第一接入网的接入网网元与第二接入网的接入网网元协商的;
所述用户设备根据所述激活时间, 采用时分复用的方式, 分别通过所述第 一接入网的接入网网元与所述第二接入网的接入网网元进行联合传输。
6. 根据权利要求 5所述的方法, 其中, 所述激活时间包括以下至少之一: 在所述 第一接入网中激活的起始时间、 在所述第二接入网中激活的起始时间、 在所述 第一接入网中激活的时长、 在所述第二接入网中激活的时长、 激活的周期。
7. 根据权利要求 5所述的方法, 其中, 在所述激活时间不包括激活的起始时间的 情况下, 所述用户设备在接收到所述激活时间的同时开始进行联合传输。
8. 根据权利要求 5至 7中任一项所述的方法, 其中, 所述第一接入网的接入网网 元和所述第二接入网的接入网网元均包括以下之一:
长期演进系统的基站、 通用移动通信系统的无线网络控制器、 通用移动通 信系统的基站、 全球移动通信增强型数据速率全球移动通信演进技术无线接入 网系统的基站控制器。
9. 一种联合传输系统, 包括第一接入网的接入网网元、 第二接入网的接入网网元 和用户设备, 其中所述第一接入网的接入网网元包括:
协商模块, 设置为与所述第二接入网的接入网网元协商所述用户设备的激 活时间, 其中所述激活时间用于所述用户设备采用时分复用的方式分别通过所 述第一接入网的接入网网元与所述第二接入网的接入网网元进行联合传输; 发送模块, 设置为向所述用户设备发送所述激活时间。
10. 一种联合传输系统, 包括第一接入网的接入网网元、 第二接入网的接入网网元 和用户设备, 其中所述用户设备包括:
接收模块, 设置为接收来自所述第一接入网的接入网网元的激活时间, 其 中所述用户设备仅具备在单一时间与单一接入网进行通信的能力, 所述激活时 间是通过所述第一接入网的接入网网元与所述第二接入网的接入网网元协商 的;
联合传输模块, 设置为根据所述激活时间, 采用时分复用的方式, 分别通 过所述第一接入网的接入网网元与所述第二接入网的接入网网元进行联合传 输。
11. 一种联合传输系统, 包括第一接入网的接入网网元、 第二接入网的接入网网元 和用户设备, 其中,
所述第一接入网的接入网网元包括:
协商模块, 设置为与所述第二接入网的接入网网元协商所述用户设备的激 活时间, 其中所述激活时间用于所述用户设备采用时分复用的方式分别通过所 述第一接入网的接入网网元与所述第二接入网的接入网网元进行联合传输; 发送模块, 设置为向所述用户设备发送所述激活时间; 所述用户设备包括:
接收模块, 设置为接收来自所述第一接入网的接入网网元的激活时间, 其 中所述用户设备仅具备在单一时间与单一接入网进行通信的能力, 所述激活时 间是通过所述第一接入网的接入网网元与所述第二接入网的接入网网元协商 的;
联合传输模块, 设置为根据所述激活时间, 采用时分复用的方式, 分别通 过所述第一接入网的接入网网元与所述第二接入网的接入网网元进行联合传 输。
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