WO2015062478A1 - Procédé, système et dispositif de communication - Google Patents

Procédé, système et dispositif de communication Download PDF

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Publication number
WO2015062478A1
WO2015062478A1 PCT/CN2014/089693 CN2014089693W WO2015062478A1 WO 2015062478 A1 WO2015062478 A1 WO 2015062478A1 CN 2014089693 W CN2014089693 W CN 2014089693W WO 2015062478 A1 WO2015062478 A1 WO 2015062478A1
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WIPO (PCT)
Prior art keywords
cell
mbsfn area
user equipment
information
network side
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Application number
PCT/CN2014/089693
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English (en)
Chinese (zh)
Inventor
张惠英
赵亚利
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电信科学技术研究院
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Publication of WO2015062478A1 publication Critical patent/WO2015062478A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for performing communication.
  • Group communication means that the network transmits data to all User Equipments (UEs) in the group at the same time in a fast and efficient manner.
  • UEs User Equipments
  • LTE Long Term Evolution
  • the LTE system will not be able to maintain the 2/3G network, and the network can be smoothly transitioned to the LTE system.
  • the end-to-end transmission delay requirement of the group communication is 150 ms.
  • the current network architecture reuses the existing Multimedia Broadcast Multicast Service (MBMS) architecture and is existing.
  • MBMS network architecture has been modified to meet this delay requirement.
  • MBMS uses a point-to-multipoint approach to simultaneously send data from the same service source to multiple receivers.
  • MBMS not only expands the types of services in mobile communication networks, but also reduces network operation costs through bearer and resource sharing.
  • the MBMS is implemented by using the MBMS (MBSFN), that is, all cells participating in the MBMS in a certain area are at the same time and The same content is sent on the frequency resource (this area is called the MBSFN area).
  • MBSFN the UE can combine signals from multiple cells for better coverage and transmission quality.
  • the same MBMS service can be transmitted in different MBSFN areas, that is, different MBSFN areas can belong to the same MBMS service area. As shown in FIG. 1, although there are three MBSFN areas, they belong to the same MBMS service area. Different MBSFN areas can overlap and need to be distinguished on radio resources.
  • the use of LTE systems to support public safety group communication is an urgent need.
  • one solution is to use the existing MBMS network architecture to implement group communication functions, but in some scenarios, for example, UE mobile
  • the coverage of the MBSFN area is the result of the multicast/unicast handover.
  • the UE establishes a unicast connection with the target cell after the service of the target cell is failed on the MBMS channel. The delay is long and cannot meet the communication delay requirement.
  • the unicast connection is established with the target cell after the service of the target cell is failed on the MBMS channel, so that the communication delay is increased.
  • the present invention provides a method, a system, and a device for performing communication, which are used to solve the problem that the UE that exists in the prior art moves to the MBSFN area after the UE has failed to perform the service on the MBMS channel.
  • Establishing a unicast connection increases the communication latency.
  • the user equipment receives the traffic carried on the MBMS channel, if the cell handover is performed, it is determined whether the serving cell and the target cell are in the same MBSFN area;
  • the user equipment determines, according to the judgment result, whether to continue receiving the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. If the user equipment is in the process of receiving the service carried on the MBMS channel, if the cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, thereby After the user equipment moves out of the coverage of the MBSFN area, the unicast connection is not established with the target cell after the service of the target cell is failed on the MBMS channel, which reduces the communication delay.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, including:
  • the user equipment determines, according to the notification from the network side device, whether the serving cell and the target cell are in the same MBSFN area.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and further includes:
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, including:
  • the user equipment determines, according to the received cell information in the MBSFN area, whether the serving cell and the target cell are in the same MBSFN area.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in an MBSFN area where the serving cell is located.
  • the method further includes:
  • the user equipment does not receive the cell information in the MBSFN area by using the MCCH of the serving cell, and determines that all neighboring cells of the serving cell are in the same MBSFN area as the serving cell.
  • the user equipment determines, according to the determination result, whether to continue to receive services carried on the MBMS channel, including:
  • the user equipment continues to receive the service carried on the MBMS channel after changing to the target cell.
  • the user equipment determines, according to the determination result, whether to continue to receive services carried on the MBMS channel, including:
  • the user equipment determines whether the target cell is an MBMS cell
  • the target cell has the MBMS service that the user equipment is transmitting, after changing to the target cell, continue to receive the service carried on the MBMS channel;
  • unicast group data transmission is performed with the target cell.
  • the network side device determines cell information in the MBSFN area
  • the network side device sends a notification to the user equipment according to the cell information in the MBSFN area, so that the user equipment determines the serving cell and the target cell if performing cell handover in a service process carried on the MBMS channel. Whether it is in the same MBSFN area, and according to the judgment result, it is determined whether to continue receiving the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. If the user equipment is in the process of receiving the service carried on the MBMS channel, if the cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, thereby After the user equipment moves out of the coverage of the MBSFN area, the unicast connection is not established with the target cell after the service of the target cell is failed on the MBMS channel, which reduces the communication delay.
  • the network side device sends a notification to the user equipment according to the cell information in the MBSFN area, including:
  • the network side device sends the cell information in the MBSFN area to the user equipment by using the MCCH of the cell.
  • the network side device sends the cell information in the MBSFN area to the user equipment by using the MCCH, including:
  • the network side device For each cell, the network side device sends all cell information in the MBSFN area to which the cell belongs by using the MCCH of the cell; or
  • the network side device For each cell, the network side device sends the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs by using the MCCH of the cell.
  • the network side device before the network side device sends the cell information in the MBSFN area to the user equipment by using the MCCH of the cell, the network side device further includes:
  • the network side device determines that the cell and the neighboring cells of the cell are not all in the same MBSFN area.
  • the network side device sends a notification to the user equipment according to the cell information in the MBSFN area, including:
  • the network side device does not send the cell information in the MBSFN area to the user equipment by using the MCCH of the cell, so that the user equipment passes the
  • the MCCH of the cell does not receive the cell information in the MBSFN area, and determines that the cell and the neighboring cell of the cell are all in the same MBSFN area.
  • a determining module configured to determine, in a service process carried on the MBMS channel, whether the serving cell and the target cell are in the same MBSFN area, if performing cell handover;
  • the processing module is configured to determine, according to the judgment result, whether to continue receiving the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. If the user equipment is in the process of receiving the service carried on the MBMS channel, if the cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, thereby After the user equipment moves out of the coverage of the MBSFN area, the unicast connection is not established with the target cell after the service of the target cell is failed on the MBMS channel, which reduces the communication delay.
  • the determining module is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area.
  • the determining module is specifically configured to:
  • the cell information in the MBSFN area from the network side device is received by the MCCH. According to the received cell information in the MBSFN area, it is determined whether the serving cell and the target cell are in the same MBSFN area.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in an MBSFN area where the serving cell is located.
  • the determining module is further configured to:
  • the MCCH in the MBSFN area is not received by the MCCH of the serving cell, it is determined that all neighboring cells of the serving cell are in the same MBSFN area as the serving cell.
  • the processing module is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area, after changing to the target cell, the service carried on the MBMS channel is continuously received.
  • the processing module is specifically configured to:
  • the serving cell and the target cell are not in the same MBSFN area, determine whether the target cell is an MBMS cell;
  • the target cell has the MBMS service that the user equipment is transmitting, after changing to the target cell, continue to receive the service carried on the MBMS channel;
  • unicast group data transmission is performed with the target cell.
  • a determining module configured to determine cell information in an MBSFN area
  • the notification module is configured to send a notification to the user equipment according to the cell information in the MBSFN area, so that the user equipment determines the serving cell and the target cell if performing cell handover in a service process carried on the MBMS channel Whether it is in the same MBSFN area, and according to the judgment result, it is determined whether to continue receiving the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. If the user equipment is in the process of receiving the service carried on the MBMS channel, if the cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, thereby After the user equipment moves out of the coverage of the MBSFN area, the unicast connection is not established with the target cell after the service of the target cell is failed on the MBMS channel, which reduces the communication delay.
  • the notification module is specifically configured to:
  • the cell information in the MBSFN area is sent to the user equipment by using the MCCH of the cell.
  • the notification module is specifically configured to:
  • the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs is transmitted through the MCCH of the cell.
  • the notification module is specifically configured to:
  • the cell information in the MBSFN area is sent to the user equipment by using the MCCH of the cell.
  • the notification module is specifically configured to:
  • the cell information in the MBSFN area is not sent to the user equipment by using the MCCH of the cell, so that the user equipment does not receive the MCCH in the cell.
  • the cell information in the MBSFN area determines that both the cell and the neighboring cell of the cell are in the same MBSFN area.
  • the user equipment is configured to determine whether the serving cell and the target cell are in the same MBSFN area, if the cell handover is performed, and determine whether to continue to receive the bearer on the MBMS channel according to the judgment result.
  • a network side device configured to determine cell information in an MBSFN area, and send a notification to the user equipment according to the cell information in the MBSFN area, so that the user equipment performs a cell in a service process carried on an MBMS channel. If the handover is performed, it is determined whether the serving cell and the target cell are in the same MBSFN area, and according to the determination result, determining whether to continue receiving the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. If the user equipment is in the process of receiving the service carried on the MBMS channel, if the cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, thereby After the user equipment moves out of the coverage of the MBSFN area, the unicast connection is not established with the target cell after the service of the target cell is failed on the MBMS channel, which reduces the communication delay.
  • FIG. 1 is a schematic diagram of an MBSFN area in the background art
  • FIG. 2 is a schematic structural diagram of a system for performing communication according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of a first type of side user equipment in a system for performing communication according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic structural diagram of a first network device in a system for performing communication according to Embodiment 1 of the present invention
  • FIG. 5 is a schematic structural diagram of a second user equipment in a system for performing communication according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of a second network side device in a system for performing communication according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic flowchart of a method for communication performed by a user equipment according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic flowchart of a method for a network side device to send a notification to a user equipment according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic flowchart of a method for a user equipment to perform communication according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic flowchart of a method for a user equipment to perform communication according to Embodiment 5 of the present invention.
  • FIG. 11 is a schematic flowchart of a method for a user equipment to communicate according to Embodiment 6 of the present invention.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and determines whether to continue to receive the bearer in the MBMS channel according to the judgment result. On the business. Since the user equipment is receiving the service procedure carried on the MBMS channel If cell handover is performed, it is determined whether to continue to receive the service carried on the MBMS channel according to the judgment result of whether the serving cell and the target cell are in the same MBSFN area, so that after the user equipment moves out of the MBSFN area coverage, it is not necessary to wait for If the service carried by the target cell on the MBMS channel fails, a unicast connection is established with the target cell, which reduces the communication delay.
  • the solution of the embodiment of the present invention can reduce the service transmission delay of the group communication in the case of mobile without changing the existing network architecture, and meet the end-to-end transmission delay requirement of the group communication.
  • the system for performing communication in Embodiment 1 of the present invention includes: a network side device 20 and a user equipment 21.
  • the network side device 20 is configured to determine the cell information in the MBSFN area, and send a notification to the user equipment according to the cell information in the MBSFN area, so that if the user equipment performs cell handover in the service process carried on the MBMS channel, Determining whether the serving cell and the target cell are in the same MBSFN area, and determining whether to continue the service carried on the MBMS channel according to the judgment result;
  • the user equipment 21 is configured to determine, in the service process carried on the MBMS channel, whether the serving cell and the target cell are in the same MBSFN area, and determine whether to continue to receive the bearer on the MBMS channel according to the determination result. Business.
  • the services carried on the MBMS channel include, but are not limited to, one of the following services:
  • the cell information in the embodiment of the present invention is information that can uniquely identify a cell, such as a cell identifier, a cell number corresponding to the cell identifier, and the like.
  • the network side device in the embodiment of the present invention may be a Multi-cell/Multicast Coordination Entity (MCE), or may be a base station (such as a macro base station, a home base station, etc.) or a relay (RN).
  • MCE Multi-cell/Multicast Coordination Entity
  • RN relay
  • the device may also be other network side devices or new network side devices.
  • the network side device to notify the user equipment according to the cell information in the MBSFN area, and several types are listed below.
  • the network side device directly sends the cell information in the MBSFN area to the user equipment through the multicast control channel (MCCH) of the cell.
  • MCCH multicast control channel
  • the network side device sends all the cell information in the MBSFN area to which the cell belongs, such as the cell B and the cell C in the MBSFN area A, and the network side device passes the cell B and the cell respectively.
  • C transmits cell information of cell B and cell C; or
  • the network side device For each cell, the network side device sends the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs, such as the cell B, the cell C, and the cell D in the MBSFN area A, and the neighboring cell of the cell B. If the neighboring cell of the cell C is the cell D and the cell E, the network side device transmits the cell information of the cell B and the cell D through the cell B, and transmits the cell information of the cell C and the cell D through the cell C.
  • Transmitting the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs can save the number of cell information transmitted, thereby saving resources.
  • the MCE may interact with each cell to neighbor cell list information according to the cell information in the MBSFN area.
  • Each cell is located in the same MBSFN.
  • the cell of the area that is, the MBMS information broadcast by the cells from the same MCE, mainly includes the correspondence between the cell index (CellIndex) and the cell identity (CellIdentity) in the neighbor cell list information of each cell, so that only the cell sequence number can be used.
  • the user equipment is notified by the MCCH (the SIB includes the correspondence between the cell number and the cell identifier, and the user equipment can obtain the correspondence by using the SIB information). If the MCE does not interact with the neighbor cell information of each cell, the MCE may directly notify the user equipment of the cell identity of the neighboring cell of each cell through the MCCH.
  • Manner 2 The network side device determines the notification mode according to whether the cell and the neighboring cell of the cell are all in the same MBSFN area.
  • the network side device determines whether the cell and the neighboring cell of the cell are in the same MBSFN area, and if yes, does not send the cell information in the MBSFN area to the user equipment by using the MCCH of the cell, so that The user equipment determines that the cell and the neighboring cell of the cell are in the same MBSFN area by using the cell information in the MBSFN area that is not received by the MCCH of the cell;
  • the network side device sends all the cell information in the MBSFN area to which the cell belongs through the MCCH of the cell. For example, if there is a cell B and a cell C in the MBSFN area A, the network side device sends the cell B and the cell through the cell B and the cell C, respectively.
  • the network side device transmits the cell information of the cell B and the cell D through the cell B, and transmits the cell information of the cell C and the cell D through the cell C.
  • the network side device may adopt an implicit notification manner, that is, the cell information is not sent, so that the user equipment knows that the serving cell and the target cell are in the same MBSFN. In the area, thus saving transmission resources.
  • the MCE may exchange neighbor cell list information with each cell before the user equipment is notified according to the cell information in the MBSFN area, and mainly includes a neighbor cell list of each cell.
  • CellIndex the cell number
  • CellIdentity the cell identifier
  • the MCE may directly notify the user equipment of the cell identity of the neighboring cell of each cell through the MCCH.
  • the cell information carried in the MCCH can be seen in the following content:
  • the serving cell and the target cell are in the same MBSFN area.
  • the user equipment receives the cell information in the MBSFN area from the network side device through the MCCH, it is determined whether the serving cell and the target cell are in the same MBSFN area according to the received cell information in the MBSFN area.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in the MBSFN area in which the serving cell is located.
  • the cell information received by the MCCH of the serving cell has the cell information of the target cell, it can be determined that the serving cell and the target cell are in the same MBSFN area; if not, it can be determined that the serving cell and the target cell are not in the same In the MBSFN area.
  • the MCCH does not receive the cell information, and it can be determined that all the neighboring cells of the serving cell are in the same MBSFN area as the serving cell, that is, the serving cell and the target cell are in the same MBSFN area.
  • the user equipment is changed to the target. After the cell, the service carried on the MBMS channel continues to be received.
  • the change here may be to switch to the target cell or to reselect to the target cell.
  • the user equipment may further determine whether the target cell is an MBMS cell;
  • the target cell has an MBMS service that is being transmitted by the user equipment, after the change to the target cell, the service carried on the MBMS channel is continuously received;
  • unicast group data transmission is performed with the target cell.
  • the user equipment determines, according to the received System Information Block (SIB) of the target cell, whether the target cell is an MBMS cell.
  • SIB System Information Block
  • the user equipment determines the location information of the MCCH of the target cell according to the received system information of the target cell, and receives the MCCH according to the location information. According to the MCCH, it is determined whether the target cell has the MBMS service that the user equipment is transmitting.
  • the first type of user equipment in the system for communicating in the first embodiment of the present invention includes:
  • the determining module 310 is configured to determine, in a service process that is carried on the MBMS channel, whether the serving cell and the target cell are in the same MBSFN area, if performing cell handover;
  • the processing module 320 is configured to determine, according to the determination result, whether to continue receiving the service carried on the MBMS channel.
  • the determining module 310 is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area.
  • the determining module 310 is specifically configured to:
  • the cell information in the MBSFN area from the network side device is received by the MCCH; and according to the cell information in the received MBSFN area, it is determined whether the serving cell and the target cell are in the same MBSFN area.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in the MBSFN area in which the serving cell is located.
  • the determining module 310 is further configured to:
  • the MCCH of the serving cell does not receive the cell information in the MBSFN area, it is determined that all neighboring cells of the serving cell are in the same MBSFN area as the serving cell.
  • the processing module 320 is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area, after changing to the target cell, the service carried on the MBMS channel is continuously received.
  • the processing module 320 is specifically configured to:
  • the serving cell and the target cell are not in the same MBSFN area, determine whether the target cell is an MBMS cell;
  • the target cell has an MBMS service that is being transmitted by the user equipment, after the change to the target cell, the service carried on the MBMS channel is continuously received;
  • unicast group data transmission is performed with the target cell.
  • the first network side device in the system for communicating in the first embodiment of the present invention includes:
  • a determining module 410 configured to determine cell information in an MBSFN area
  • the notification module 420 is configured to send a notification to the user equipment according to the cell information in the MBSFN area, so that if the user equipment performs cell handover in the service process carried on the MBMS channel, it is determined whether the serving cell and the target cell are in the same In an MBSFN area, and according to the judgment result, it is determined whether to continue receiving the service carried on the MBMS channel.
  • the notification module 420 is specifically configured to:
  • the cell information in the MBSFN area is transmitted to the user equipment through the MCCH of the cell.
  • the notification module 420 is specifically configured to:
  • the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs is transmitted through the MCCH of the cell.
  • the notification module 420 is specifically configured to:
  • the cell information in the MBSFN area is sent to the user equipment by using the MCCH of the cell.
  • the notification module 420 is specifically configured to:
  • the cell information in the MBSFN area is not sent to the user equipment by the MCCH of the cell, so that the user equipment does not receive the cell in the MBSFN area by using the MCCH in the cell.
  • the information determines that the cell and the neighboring cells of the cell are both in the same MBSFN area.
  • the second type of user equipment in the system for communicating in the first embodiment of the present invention includes:
  • the processor 500 is configured to determine whether the serving cell and the target cell are in the same MBSFN area, if the cell handover is performed in the service process that is received by the receiver 510 on the MBMS channel, and determine whether to continue to pass the determination according to the judgment result.
  • Receiver 510 receives the traffic carried on the MBMS channel;
  • the receiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the determining module 310 is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area.
  • the processor 500 is specifically configured to:
  • the control receiver 510 receives the cell information in the MBSFN area from the network side device through the MCCH, and determines whether the serving cell and the target cell are in the same MBSFN area according to the received cell information in the MBSFN area. in.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in the MBSFN area in which the serving cell is located.
  • the processor 500 is further configured to:
  • the MCCH of the serving cell does not receive the cell information in the MBSFN area, it is determined that all neighboring cells of the serving cell are in the same MBSFN area as the serving cell.
  • the processing module 320 is specifically configured to:
  • the serving cell and the target cell are in the same MBSFN area, after changing to the target cell, the service carried on the MBMS channel is continuously received by the receiver 510.
  • the processing module 320 is specifically configured to:
  • the serving cell and the target cell are not in the same MBSFN area, determine whether the target cell is an MBMS cell;
  • the target cell has the MBMS service that the user equipment is transmitting, after the change to the target cell, the service carried on the MBMS channel is continuously received by the receiver 510;
  • unicast group data transmission is performed by the receiver 510 and the target cell.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 500 when performing operations.
  • the second network side device in the system for communicating in the first embodiment of the present invention includes:
  • the processor 600 is configured to determine cell information in the MBSFN area, and control, according to the cell information in the MBSFN area, the receiver 610 to send a notification to the user equipment, so that the user equipment is carried on the MBMS channel of the multimedia broadcast multicast service. If the cell handover is performed in the process, it is determined whether the serving cell and the target cell are in the same MBSFN area, and determining, according to the determination result, whether to continue receiving the service carried on the MBMS channel;
  • the receiver 610 is configured to receive and transmit data under the control of the processor 600.
  • the processor 600 is specifically configured to:
  • the control receiver 610 transmits the cell information in the MBSFN area to the user equipment through the MCCH of the cell.
  • the processor 600 is specifically configured to:
  • control receiver 610 For each cell, the control receiver 610 transmits all cell information in the MBSFN area to which the cell belongs through the MCCH of the cell; or
  • control receiver 610 For each cell, the control receiver 610 transmits the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs by using the MCCH of the cell.
  • the processor 600 is specifically configured to:
  • control receiver 610 After determining that the cell and the neighboring cell of the cell are not all in the same MBSFN area, the control receiver 610 sends the cell information in the MBSFN area to the user equipment by using the MCCH of the cell.
  • the processor 600 is specifically configured to:
  • the control receiver 610 does not send the cell information in the MBSFN area to the user equipment through the MCCH of the cell, so that the user equipment does not receive the MBSFN through the MCCH of the cell.
  • the cell information in the area determines that both the cell and the neighboring cell of the cell are in the same MBSFN area.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the embodiment of the present invention further provides a method for the network side device to notify the user equipment and a method for the user equipment to communicate, and the device corresponding to the method is a device in the system for communicating according to the embodiment of the present invention, and the method
  • the principle of solving the problem is similar to the system, so the implementation of the method can be referred to the implementation of the system, and the repetition will not be repeated.
  • the method for performing communication by a user equipment according to Embodiment 2 of the present invention includes:
  • Step 701 The user equipment, in receiving the service procedure carried on the MBMS channel, determines whether the serving cell and the target cell are in the same MBSFN area, if performing cell handover;
  • Step 702 The user equipment determines, according to the judgment result, whether to continue to receive the service carried on the MBMS channel.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, including:
  • the user equipment determines, according to the notification from the network side device, whether the serving cell and the target cell are in the same MBSFN area.
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, and further includes:
  • the user equipment receives cell information in the MBSFN area from the network side device through the MCCH;
  • the user equipment determines whether the serving cell and the target cell are in the same MBSFN area, including:
  • the user equipment determines, according to the received cell information in the MBSFN area, whether the serving cell and the target cell are in the same MBSFN area.
  • the cell information in the MBSFN area is cell information of all cells in the MBSFN area where the serving cell is located; or
  • the cell information in the MBSFN area is cell information of a cell adjacent to the serving cell in the MBSFN area in which the serving cell is located.
  • the method of the embodiment of the present invention further includes:
  • the user equipment does not receive the cell information in the MBSFN area through the MCCH of the serving cell, and determines that all neighboring cells of the serving cell are in the same MBSFN area as the serving cell.
  • the user equipment determines, according to the determination result, whether to continue to receive the service carried on the MBMS channel, including:
  • the user equipment continues to receive the service carried on the MBMS channel after changing to the target cell.
  • the user equipment determines, according to the determination result, whether to continue to receive the service carried on the MBMS channel, including:
  • the user equipment determines whether the target cell is an MBMS cell
  • the target cell has an MBMS service that is being transmitted by the user equipment, after the change to the target cell, the service carried on the MBMS channel is continuously received;
  • unicast group data transmission is performed with the target cell.
  • the method for the network side device to send a notification to the user equipment includes:
  • Step 801 The network side device determines cell information in the MBSFN area.
  • Step 802 The network side device sends a notification to the user equipment according to the cell information in the MBSFN area, so that if the user equipment performs cell handover in the service process carried on the MBMS channel, it is determined whether the serving cell and the target cell are in the same MBSFN. In the area, according to the judgment result, it is determined whether to continue receiving the service carried on the MBMS channel.
  • the network side device notifies the user equipment, including:
  • the network side device sends the cell information in the MBSFN area to the user equipment through the MCCH of the cell.
  • the network side device sends the cell information in the MBSFN area to the user equipment by using the MCCH, including:
  • the network side device For each cell, the network side device sends the location in the MBSFN area to which the cell belongs through the MCCH of the cell. Have cell information; or
  • the network side device For each cell, the network side device transmits the cell information of the cell adjacent to the cell in the MBSFN area to which the cell belongs by using the MCCH of the cell.
  • the network side device before the network side device sends the cell information in the MBSFN area to the user equipment by using the MCCH of the cell, the network side device further includes:
  • the network side device determines that the neighboring cells of the cell and the cell are not all in the same MBSFN area.
  • the network side device sends a notification to the user equipment, including:
  • the network side device does not send the cell information in the MBSFN area to the user equipment through the MCCH of the cell, so that the user equipment does not receive the MBSFN area by using the MCCH in the cell.
  • the cell information in the middle determines that the cell and the neighboring cell of the cell are both in the same MBSFN area.
  • the method for performing communication by a user equipment according to Embodiment 4 of the present invention includes:
  • Steps 910 to 920 The MCE includes the cell list information in the MBSFN Area in the MCCH addressed to each eNB (evolved base station), and broadcasts to the UE in the MBSFN Area.
  • Step 930 The UE receives the MBMS/group communication service of the current serving cell (source eNB).
  • Step 940 The UE finds that the signal of the current serving cell is weak (for example, below a certain threshold), and the signal of the neighboring cell is strong (for example, higher than a certain threshold).
  • Step 950 The UE determines, by using the cell list information of the MBSFN Area carried in the received MCCH, that the target cell (target eNB) and the current serving cell (source eNB) belong to the same MBSFN Area.
  • Step 960 The UE directly switches/reselects to the target cell to continue receiving the MBMS/group communication service.
  • a method for a user equipment to communicate according to Embodiment 5 of the present invention includes:
  • Step 1010 to step 1020 The MCE includes the cell list information in the MBSFN Area in the MCCH addressed to each eNB, and broadcasts to the UE in the MBSFN Area.
  • Step 1030 The UE receives the MBMS/group communication service of the current serving cell (source eNB).
  • Step 1040 The UE finds that the signal of the current serving cell is weak (for example, below a certain threshold), and the signal of the neighboring cell is strong (for example, higher than a certain threshold).
  • Step 1050 The UE determines, by using the cell list information of the MBSFN Area carried in the received MCCH, that the target cell (target eNB) and the current serving cell (source eNB) do not belong to the same MBSFN Area.
  • Step 1060 The UE determines, according to the read SIB of the target cell, that the target cell is a non-MBMS cell, and determines that an RRC connection needs to be established with the target cell for unicast transmission.
  • Step 1070 The UE establishes an RRC connection with the target cell.
  • Step 1080 The UE performs unicast group data transmission with the target cell.
  • the UE establishes an MBMS connection with other MBSFN Areas with the target cell.
  • the method for the user equipment to communicate according to Embodiment 6 of the present invention includes:
  • Steps 1110 to 1120, MCE1 and MCE2 respectively include the cell list information in the MBSFN Area in the MCCH addressed to each eNB, and broadcast to the UE in the MBSFN Area.
  • Step 1130 The UE receives an MBMS/group communication service of a current serving cell (source eNB).
  • Step 1140 The UE finds that the signal of the current serving cell is weak (for example, below a certain threshold), and the signal of the neighboring cell is strong (for example, above a certain threshold).
  • Step 1150 The UE determines, by using the cell list information of the MBSFN Area carried in the received MCCH, that the target cell (target eNB) and the current serving cell (source eNB) do not belong to the same MBSFN Area.
  • Step 1160 The UE determines, according to the read SIB of the target cell, that the target cell is an MBMS cell, and determines a handover/reselection time according to the received MCCH transmission location information of the target cell (the determining time can reduce the service interruption time, and the UE directly The cell conversion is performed at the time when the target cell MCCH can be received, and the service of the original cell is continued to be received before.
  • Step 1170 The UE receives the MCCH of the target cell according to the determined MCCH transmission location information, determines whether there is a group communication service that the UE needs to receive according to the information in the MCCH, and if yes, uses the MBMS to receive the group communication service, otherwise, establishes a single with the target cell. Broadcast connection.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the device is implemented in a flow or a flow or a block diagram of a block or multiple The function specified in the box.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

La présente invention concerne, selon des modes de réalisation, le domaine technique des communications sans fil, et plus particulièrement un procédé, un système et un dispositif de communication utilisés pour résoudre le problème de l'état antérieur de la technique selon lequel un UE qui sort de la portée d'une zone de couverture MBSFN et doit établir une connexion en unidiffusion avec une cellule cible ne peut le faire qu'après dysfonctionnement d'un service mis en œuvre par l'intermédiaire d'un canal MBMS par la cellule cible, augmentant ainsi le délai de communication. Le procédé des modes de réalisation de la présente invention comprend : pendant le processus de réception par l'équipement utilisateur d'un service mis en œuvre par l'intermédiaire d'un canal MBMS, en cas de transfert intercellulaire, la détermination de la présence de la cellule de desserte et de la cellule cible dans une même zone MBSFN ; et en fonction du résultat de détermination, la détermination de la poursuite de la réception du service mis en œuvre par l'intermédiaire du canal MBMS. L'utilisation des modes de réalisation de la présente invention rend inutile, lorsqu'un équipement utilisateur sort de la portée d'une zone de couverture MBSFN, d'attendre un dysfonctionnement d'un service mis en œuvre par l'intermédiaire du canal MBMS par la cellule cible avant d'établir une connexion en unidiffusion avec ladite cellule cible, permettant ainsi de réduire le délai de communication.
PCT/CN2014/089693 2013-10-30 2014-10-28 Procédé, système et dispositif de communication WO2015062478A1 (fr)

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