WO2017024909A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

Info

Publication number
WO2017024909A1
WO2017024909A1 PCT/CN2016/088947 CN2016088947W WO2017024909A1 WO 2017024909 A1 WO2017024909 A1 WO 2017024909A1 CN 2016088947 W CN2016088947 W CN 2016088947W WO 2017024909 A1 WO2017024909 A1 WO 2017024909A1
Authority
WO
WIPO (PCT)
Prior art keywords
identifier
layer
relay
remote
identified
Prior art date
Application number
PCT/CN2016/088947
Other languages
English (en)
Chinese (zh)
Inventor
张惠英
Original Assignee
电信科学技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2017024909A1 publication Critical patent/WO2017024909A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and device for performing data transmission.
  • the centralized control of the network is adopted, that is, the uplink and downlink data of the user equipment (User Equipment, UE, also referred to as the terminal) are transmitted under the control of the network. receive.
  • the communication between the UE and the UE is forwarded and controlled by the network.
  • Device-to-device that is, user equipment pass-through technology, refers to a way in which neighboring user equipment can transmit data through a direct link in a short range without passing through a central node (ie, a base station). ) Forwarding, as shown in Figure 1B.
  • the D2D proximity service includes the following two categories: D2D discovery: UE uses Evolved-Universal Terrestrial Radio Access (E-UTRA) To confirm that another UE is nearby. For example, the D2D UE can use the service to find nearby taxis, find friends nearby, and the like;
  • E-UTRA Evolved-Universal Terrestrial Radio Access
  • D2D communication UEs that are close to each other, by directly establishing a link between two UEs, thus converting a communication link originally transmitted through the network into a local direct communication link, saving a large amount of bandwidth and network efficiency; UEs that are close to each other can use direct link communication to obtain stable high-speed and low-cost communication services.
  • Proximity service communication is generally performed under the control or assistance of the network side, and the eNB (Evolved Base Station) may even dynamically allocate resources for the UE performing the proximity service communication.
  • D2D communication includes two types of links: a D2D link: a link that directly communicates between a device and a device; and a Device-to-Network (D2N) link: a communication between a device and a network node.
  • D2D link a link that directly communicates between a device and a device
  • D2N link a Device-to-Network (D2N) link
  • a UE participating in D2D discovery/communication includes two roles: a D2D transmitting UE: a UE transmitting a D2D discovery/communication message; and a D2D receiving UE: a UE receiving a discovery/communication message transmitted by the D2D transmitting UE.
  • PC5 interface An interface for direct interaction between a UE and a UE, called a PC5 interface, is introduced in 3GPP Rel-12.
  • the UE can perform data transmission with the network through a relay (relay).
  • relay relay
  • the manner in which the UE communicates with the network through the Relay (Relay) UE is called UE-to-Network Relay, as shown in FIG. 1C.
  • UE-to-Network Relay In order to communicate with the network, UE2 outside the network coverage uses UE1 as a Relay node.
  • the UE1 forwards its own uplink and downlink signals.
  • the communication between the UE1 and the UE2 is implemented by D2D communication, and the UE1 and the network are implemented by using cellular communication.
  • Relay UE A UE that provides Relay services for other UEs.
  • Remote UE A UE outside the network coverage needs to implement UE communication with the network through the Relay node.
  • the manner in which the UE performs discovery/communication with the target UE through the Relay UE is called UE-to-UE relay, as shown in FIG. 1D.
  • the UE2 can forward its own information through the UE1, wherein the UE1 and the UE2, the UE1 and the UE3 implement data transmission through D2D communication.
  • 3GPP Rel-12 has implemented one-to-many communication of the PC5 interface.
  • the main principle is that the intra-group transmitting UE identifies itself by the source address (SRC) in the Medium Access Control (MAC) sub-header; After receiving the data packet, the intra-group receiving UE firstly combines the destination address (DST) in the received MAC packet header with the physical layer channel scrambling code to determine the group identification information, and then determines whether the group identification information is related to itself.
  • the group ID (ProSe Layer-2 Group ID) is the same. If they are the same, the receiving is confirmed, otherwise it is discarded.
  • the one-to-one communication mode is adopted between the Relay UE and the Remote UE, and the identifier of the PC5 interface is used as the source and destination addresses.
  • the global unique identifier is not used.
  • the ID of the PC5 interface is incorrect.
  • the ID of the current PC5 interface cannot be applied to the UE to Network Relay scenario.
  • the embodiments of the present invention provide a method and a device for performing data transmission, so as to prevent an identifier conflict from occurring when the identifier of the PC5 interface existing in the prior art is applied to the UE to Network Relay scenario.
  • the relay terminal Relay UE determines the first layer 2 identifier
  • the relay UE uses the first layer 2 identifier to perform data transmission with the remote terminal Remote UE identified by the second layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same
  • the second part of the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE. .
  • the relay UE determines the identifier of the first layer 2, including: the relay UE requests a specific identifier from the network side, and identifies the layer 2 identifier allocated by the network side as the first layer 2 identifier; or, the Relay UE Determining, by the network side, a specific identifier, and combining, according to the pre-configured second part identifier, the first part identifier allocated by the network side into the first layer 2 identifier; or, the Relay UE requests a specific identifier from the network side, and the relay is The second part identifier assigned by the UE is combined with the first part identifier assigned by the network side into the first layer 2 identifier.
  • the method further includes: the Relay UE broadcasts the first layer 2 identifier to notify the remote UE Relay The specific identity of the UE.
  • the Relay UE further broadcasts information used to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the method further includes: after the one-to-one communication request of the Remote UE is received by the Relay UE, , the second part identifier is assigned to the Remote UE.
  • the relay UE allocates the second part identifier to the at least one remote UE, including: the Relay UE assigns a second part identifier to the Remote UE by using a one-to-one communication setup message; wherein the one-to-one communication establishment
  • the source layer 2 in the message is identified as the first layer 2 identifier
  • the destination layer 2 is identified as the source layer 2 identifier used in the one-to-one communication request.
  • the relay UE allocates the second part identifier to the at least one remote UE, and further includes: if the one-to-one communication request includes the information of the non-layer 2 identifier, the Relay UE will be the one-to-one The non-layer 2 identification information included in the communication request for identifying the Remote UE is placed in the one-to-one communication setup message.
  • the relay UE allocates the second part identifier to the at least one remote UE, and the method further includes: if the source layer 2 identifiers in the one-to-one communication request message sent by different remote UEs are the same, the relay UE passes the pair A communication setup message assigns a second partial identity to a plurality of Remote UEs.
  • the first part identifier of the Relay UE is different from the first part identifier of the same cell and other Relay UEs of the neighboring cell; or the first part of the Relay UE identifies the same base station and other Relay UEs of the neighboring base station.
  • the first part of the identifier is different; or the Relay UE is different from the first part identifier of other Relay UEs activated in the network.
  • the relay UE determines that the network side trigger layer 2 identifies the redistribution or determines that the layer 2 identifier redistribution condition is satisfied.
  • the method includes: determining, by a Remote UE, a second layer 2 identifier;
  • the remote UE uses the second layer 2 identifier to perform data transmission with the Relay UE identified by using the first layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same network side
  • the first part of the identifier is identified, and the second layer 2 identifier further includes a second part identifier that is allocated by the Relay UE, where the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE.
  • the method further includes: determining, by the remote UE, the first layer identifier of the relay UE by using the first layer 2 identifier that is broadcast by the relay UE.
  • the Remote UE determines the first part identifier of the Relay UE by using information that is used by the Relay UE to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the method further includes: the Remote UE to the Relay UE Sending a one-to-one communication request, so that the Relay UE allocates a second part identifier to the Remote UE;
  • the source layer 2 used by the one-to-one communication request is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the same identifier as the first layer 2 identifier.
  • a portion of the identifier and a second portion identifier, the second portion being identified as a fixed value or assigned by the Remote UE.
  • the Remote UE sends a one-to-one communication request to the Relay UE, and the method further includes: the Remote UE placing the non-layer 2 identification information used to identify the Remote UE in the one-to-one communication request.
  • the method further includes: the remote UE determining, according to the received one-to-one communication setup message from the relay UE, that the relay UE is allocated to the remote UE.
  • the second part of the logo is the remote UE determining, according to the received one-to-one communication setup message from the relay UE, that the relay UE is allocated to the remote UE. The second part of the logo.
  • the method further includes: the Remote UE determines that a Relay UE reselection is required.
  • a first determining module configured to determine a first layer 2 identifier
  • a first processing module configured to use the first layer 2 identifier to perform data transmission with a Remote UE identified by using the second layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same
  • the second part of the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE.
  • the first determining module is specifically configured to: request a specific identifier from the network side, and use the layer 2 identifier assigned by the network side as the first layer 2 identifier; or request a specific identifier from the network side, and according to the pre-configuration
  • the second part identifier is combined with the first part identifier allocated by the network side into the first layer 2 identifier; or the specific identifier is requested from the network side, and the second part identifier assigned by the Relay UE and the first part identifier allocated by the network side are
  • the first layer 2 logo is synthesized.
  • the first processing module is further configured to: after receiving the one-to-one communication request of the Remote UE, before using the first layer 2 identifier to perform data transmission with the Remote UE identified by using the second layer 2,
  • the second part identifier is assigned to the Remote UE.
  • the first processing module is specifically configured to: allocate a second part identifier to the remote UE by using a one-to-one communication setup message; where the source layer 2 in the one-to-one communication setup message is identified as the The layer 2 identifier is identified by the destination layer 2 as the source layer 2 identifier used in the one-to-one communication request.
  • the first processing module is specifically configured to: if the one-to-one communication request includes the information that is not the layer 2 identifier, the one that is included in the one-to-one communication request is used to identify the Remote UE.
  • the non-layer 2 identification information is placed in the one-to-one communication setup message.
  • the first processing module is further configured to: if the source layer 2 identifiers in the one-to-one communication request message sent by different remote UEs are the same, assign a second to the plurality of remote UEs by using a one-to-one communication setup message. Partial identification.
  • the first part of the Relay UE is identified by the same cell and other Relay UEs of the neighboring cell.
  • the first part identifier is different; or the first part identifier of the Relay UE is different from the first part identifier of the same base station and other Relay UEs of the neighboring base station; or the first part identifier of the Relay UE and other Relay UEs activated in the network different.
  • the first determining module is further configured to determine the first layer 2 identifier after determining that the network side trigger layer 2 identifies the reallocation or determines that the layer 2 identity reallocation condition is met.
  • a second determining module configured to determine the second layer 2 identifier
  • a second processing module configured to use the second layer 2 identifier to perform data transmission with a Relay UE identified by using the first layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same
  • the second part of the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE.
  • the second processing module is further configured to: send a one-to-one communication request to the Relay UE, so that the Relay UE allocates a second part identifier to the Remote UE; where the one-to-one communication request
  • the source layer 2 is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the first portion identifier and the second portion identifier that are the same as the first layer 2 identifier.
  • the second part is identified as a fixed value or assigned by the Remote UE.
  • the second processing module is further configured to: place the non-layer 2 identification information used to identify the Remote UE into the one-to-one communication request.
  • the second processing module is further configured to: determine, according to the received one-to-one communication setup message from the Relay UE, the second part identifier that is allocated by the Relay UE to the Remote UE.
  • the second determining module is further configured to determine the second layer 2 identifier after determining that the Relay UE reselection needs to be performed.
  • a processor for reading a program in the memory, performing the following process: determining a first layer 2 identifier; using the first layer 2 identifier by the transceiver to perform data transmission with the Remote UE identified by the second layer 2; the transceiver For receiving and transmitting data under the control of the processor; wherein the first layer 2 identifier and the second layer 2 identifier include the same first part identifier assigned by the network side, and the second layer
  • the identifier 2 further includes a second part identifier that is allocated by the Relay UE, where the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE.
  • the processor is specifically configured to: request a specific identifier from the network side, and use the layer 2 identifier assigned by the network side as the first layer 2 identifier; or request a specific identifier from the network side, and according to the pre-configured
  • the two-part identifier is combined with the first part identifier assigned by the network side into the first layer 2 identifier; or, the specific identifier is requested from the network side, and the second part identifier allocated by the Relay UE is combined with the first part identifier assigned by the network side.
  • the first layer 2 is identified.
  • the processor is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier by using a transceiver, to notify the remote UE.
  • the specific identifier of the Relay UE is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier by using a transceiver, to notify the remote UE.
  • the specific identifier of the Relay UE is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier by using a transceiver, to notify the remote UE.
  • the specific identifier of the Relay UE is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier by using a transceiver, to notify the remote
  • the processor is further configured to instruct the transceiver to broadcast information used to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the processor is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, after receiving the one-to-one communication request of the Remote UE, the remote is The UE allocates a second part identifier.
  • the processor is specifically configured to: allocate a second part identifier to the remote UE by using a one-to-one communication setup message; where the source layer 2 in the one-to-one communication setup message is identified as the first layer 2, the destination layer 2 is identified as the source layer 2 identifier used in the one-to-one communication request.
  • the processor is further configured to: if the one-to-one communication request includes information that is not the layer 2 identifier, use the non-layer communication request included in the one-to-one communication request to identify the remote UE The layer 2 identification information is placed in the one-to-one communication setup message.
  • the processor is further configured to: if the source layer 2 identifiers in the one-to-one communication request message sent by different remote UEs are the same, assign the second part identifier to the plurality of remote UEs by using a one-to-one communication setup message. .
  • the first part identifier of the Relay UE is different from the first part identifier of the same cell and other Relay UEs of the neighboring cell; or the first part of the Relay UE identifies the same base station and other Relay UEs of the neighboring base station.
  • the first part of the identifier is different; or the Relay UE is different from the first part identifier of other Relay UEs activated in the network.
  • the processor is further configured to determine the first layer 2 identifier after determining that the network side trigger layer 2 identifies the reallocation or determines that the layer 2 identity reallocation condition is met.
  • a processor configured to read a program in the memory, perform the following process: determining a second layer 2 identifier; using the second layer 2 identifier by the transceiver to perform data transmission with the Relay UE identified by using the first layer 2;
  • the first layer 2 identifier and the second layer 2 identifier include the same first part identifier assigned by the network side, and the second layer 2 identifier further includes a second part identifier allocated by the Relay UE, One part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE.
  • the processor is further configured to determine, by using the first layer 2 identifier broadcast by the Relay UE, the first part identifier of the Relay UE before determining the identifier of the second layer 2.
  • the processor is specifically configured to: determine, by using the information that is used by the relay UE to indicate the number of bits occupied by the first part identifier in the identifier of the first layer 2, determine the identifier of the first layer 2 identifier.
  • the first part identifier of the Relay UE is specifically configured to: determine, by using the information that is used by the relay UE to indicate the number of bits occupied by the first part identifier in the identifier of the first layer 2, determine the identifier of the first layer 2 identifier. The first part identifier of the Relay UE.
  • the processor is further configured to: send a one-to-one communication request to the Relay UE, so that the Relay UE allocates a second part identifier to the Remote UE, where the one-to-one communication request is used.
  • the source layer 2 is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the first portion identifier and the second portion identifier that are the same as the first layer 2 identifier.
  • the two parts are identified as fixed values or assigned by the Remote UE.
  • the processor is further configured to: place the non-layer 2 identification information used to identify the Remote UE in the one-to-one communication request.
  • the processor is further configured to: determine, according to the received one-to-one communication setup message from the Relay UE, the second part identifier that is allocated by the Relay UE to the Remote UE.
  • the processor is further configured to determine the second layer 2 identifier after determining that the Relay UE reselection is required.
  • the Relay UE uses the first layer 2 identifier to perform data transmission with the Remote UE identified by the second layer 2.
  • the first layer 2 identifier and the second layer 2 identifier include the same first part identifier allocated by the network side, and the second layer 2 identifier further includes a second part identifier allocated by the Relay UE,
  • the first part is identified as the specific identifier of the Relay UE, and the second part is identified as the specific identifier of the Remote UE, so that the identifier of the PC5 interface is unique within a certain range, and the identifier of the PC5 interface is prevented from colliding within a certain range, thereby ensuring the identifier of the PC5 interface.
  • 1A is a schematic diagram of data of user equipment communication in a cellular network in the background art
  • 1B is a schematic diagram of data of a terminal direct connection communication in the background art
  • 1C is a schematic diagram of a UE-to-Network Relay in the background art
  • 1D is a schematic diagram of a UE-to-UE Relay in the background art
  • FIG. 2 is a schematic structural diagram of a system for performing data transmission according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a first Relay UE according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a first Remote UE according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a second Relay UE according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a second Remote UE according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a first method for performing data transmission according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a second method for performing data transmission according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a method for performing data transmission according to Embodiment 1 of the present invention.
  • FIG. 10 is a schematic flowchart of a method for performing data transmission according to Embodiment 2 of the present invention.
  • FIG. 11 is a schematic flowchart of a method for performing data transmission according to Embodiment 3 of the present invention.
  • the Relay UE uses the first layer 2 identifier to perform data transmission with the Remote UE identified by the second layer 2. Since the first layer 2 identifier and the second layer 2 identifier include the same number assigned by the network side A part of the identifier, and the second layer 2 identifier further includes a second part identifier that is allocated by the Relay UE, where the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE, so that the identifier of the PC5 interface is It is unique within a certain range, and the identifier of the PC5 interface is prevented from colliding within a certain range, so that the identifier of the PC5 interface can be applied to the UE to Network Relay scenario; the system performance is further improved.
  • the system for performing data transmission in the embodiment of the present invention includes: a Relay UE 10 and a Remote UE 20.
  • the Relay UE 10 is configured to determine a first layer 2 identifier, and use the first layer 2 identifier to perform data transmission with a Remote UE identified by using the second layer 2;
  • a remote UE 20 configured to determine a second layer 2 identifier, and use the second layer 2 identifier to perform data transmission with a Relay UE identified by using the first layer 2;
  • the first layer 2 identifier and the second layer 2 identifier include the same first part identifier assigned by the network side, and the second layer 2 identifier further includes a second part identifier allocated by the Relay UE.
  • the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE.
  • the first layer 2 identifier of the Relay UE includes a two-part identifier, where the first part identifier is a specific identifier of the Relay UE allocated by the network side, and the second part identifier is allocated or pre-set by the network side or the Relay UE allocates itself.
  • the Relay UE requests a specific identifier from the network side, and identifies the layer 2 identifier assigned by the network side as the first layer 2 identifier; or the Relay UE requests a specific identifier from the network side, and according to the pre-configured second
  • the partial identifier is combined with the first part identifier assigned by the network side into a first layer 2 identifier, where the pre-configuration may be specified in the protocol; or the Relay UE requests a specific identifier from the network side, and allocates the
  • the two-part identification is combined with the first part identification assigned by the network side into a first layer 2 identifier.
  • the second layer 2 identifier of the remote UE of the embodiment of the present invention includes a two-part identifier, where the first part identifier is a specific identifier of the Relay UE allocated by the network side, and the second part identifier is a specific identifier of the Remote UE.
  • the first part of the second layer 2 identifier of the Remote UE identifier is the same as the first part identifier of the first layer 2 identifier of the Relay UE that performs the transmission.
  • the length and location of the first part identifier and the second part identifier in the layer 2 identifier may be flexibly configured, for example, the high M bit may be specified as the first part identifier, and the low (NM) bit may be the second part identifier; The high M bit is the second part identification and the low (NM) bit is the first part identification.
  • the Relay UE may indicate in the discovery message which bits the Remote UE is to use the same value as the Relay UE. For example, the high M bit is the first part identifier, and the low (NM) bit is the second part identifier.
  • the discovery message 5 bits are used to indicate which digits are the same as the Relay UE. If the high order is the same as the Remote UE and the Relay UE, the following can be used. '10000' indicates that the upper 16 bits are the same as the Relay UE, and '10100' indicates that the upper 20 bits are the same as the Relay UE.
  • the Remote UE uses the same value as the Relay UE by default when the one-to-one communication request with the Relay UE is initiated.
  • the Remote UE since the first part identifier in the second layer 2 identifier of the Remote UE is the same as the first part identifier in the first layer 2 identifier of the Relay UE, the Remote UE needs to know the first layer in the first layer 2 identifier of the Relay UE. Part of the logo. There are many ways to know specifically, for example, the Remote UE can be notified by the network side. For convenience of presentation, the subsequent embodiment takes hexadecimal as an example.
  • the embodiment of the present invention further provides a learning mode: the Relay UE broadcasts the first layer 2 identifier; correspondingly, the Remote UE determines the first part identifier in the first layer 2 identifier of the Relay UE according to the broadcast.
  • the other identifiers are fixed values or allocated by the Relay UE or allocated by the network side. If the number of bits of the first part identifier and other identifiers is not fixed, the Relay UE needs to carry the number of bits used to indicate the first part identifier in the first layer 2 identifier. Correspondingly, according to the information indicating the number of bits occupied by the first part identifier in the identifier of the first layer 2, the Remote UE can find out which bits are the first part from the first layer 2 identifier received through the broadcast. logo.
  • F00000H is the first layer 2 identifier, where F000H is the first part identifier, and the information indicating the number of bits occupied by the first part identifier in the identifier of the first layer 2 is 16 bits.
  • the remote UE may send a one-to-one communication request to the Relay UE, so that the Relay UE allocates the second part identifier to the Remote UE.
  • the source layer 2 used by the one-to-one communication request is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier of the Relay UE
  • the third layer 2 identifier is the same as the identifier of the first layer 2
  • the first part identifier and the second part identifier are composed, and the second part identifier is a fixed value or is allocated by the Remote UE.
  • the first layer 2 of the Relay UE is identified as F00000H, where F000H is the first part identifier, 00H is the second part identifier, and the third layer 2 identifier may be F0000CH, where F000H is the same as the first part identifier, and 0CH is a fixed value or The value assigned by the Remote UE.
  • the Relay UE After receiving the one-to-one communication request of the Remote UE, the Relay UE allocates a second part identifier to the Remote UE.
  • the Relay UE may allocate a second part identifier to the Remote UE by using a one-to-one communication setup message.
  • the source layer 2 in the one-to-one communication setup message is identified as the first layer 2 identifier, and the destination layer 2 is identified as the source layer 2 identifier used in the one-to-one communication request (ie, the third layer 2 logo).
  • the source layer 2 is identified as F0000CH, and the first layer 2 is identified as F00000H.
  • the source layer 2 in the one-to-one communication setup message is identified as F00000H, and the destination layer 2 is identified as F0000CH, and the relay UE is also carried.
  • the allocation method can be random allocation; or an identifier can be selected from the unused (available) identification set.
  • Remote UE in general, the Relay UE selects a flag from the unused (available) identifier set, and the identifier is deleted from the unused (available) identifier set, and is not connected to the Relay UE in a Remote UE (for example, the connection is released. After switching, the identifier assigned to the Remote UE is added to the unused (available) identifier set. It is also possible to use a status indication that the assigned identifier is marked as used.
  • the embodiment of the present invention provides a solution: the Remote UE is used to identify the Remote UE.
  • the non-layer 2 identification information is placed in the one-to-one communication request; correspondingly, if the one-to-one communication request includes information not identified by the layer 2, the Relay UE will send the one-to-one communication request.
  • the non-layer 2 identification information included in the identifier for identifying the Remote UE is placed in the one-to-one communication setup message.
  • the non-layer 2 identifier information of the embodiment of the present invention is information that can distinguish different Remote UEs, such as an International Mobile Subscriber Identity (IMSI), and a fixed bit length that can also be generated by the Remote UE. random number.
  • IMSI International Mobile Subscriber Identity
  • a fixed bit length that can also be generated by the Remote UE. random number.
  • the relay UE establishes the message as multiple remotes through one-to-one communication.
  • the UE allocates the second part identifier, and the second part identifier of the different Remote UEs can be identified by the information identified by the non-layer 2, and broadcasted.
  • the source layer 2 identifiers in the one-to-one communication setup message sent by the remote UE1 and the remote UE2 are all F0000CH, and the information of the non-layer 2 identifier in the one-to-one communication setup message sent by the remote UE1 is 0010, and the one sent by the remote UE2 is The information of the non-layer 2 identifier in the communication setup message is 0011, the second part identifier assigned by the Relay UE to the Remote UE1 is 01, and the second part identifier assigned to the Remote UE1 is 10, and the Relay UE may set the 0010 and the 01. Bind, broadcast 0011 and 10 after binding (the non-layer 2 identifier here is in binary);
  • the Remote UE1 can find the corresponding 01 according to 0010; the Remote UE2 can find the corresponding 10 according to 0011.
  • the Remote UE may select the Relay UE through the discovery process and perform the foregoing process when the connection needs to be established with the Relay UE, or may select the Relay UE through the discovery process when the other Relay UE needs to be reselected, and perform the foregoing. process.
  • the first layer 2 identifier may be broadcasted periodically, or the identifier redistribution may be triggered when the network side trigger layer 2 identifies the reallocation or determines that the layer 2 identifier reassignment condition is satisfied.
  • the reconfiguration conditions here can be set as needed. For example, for the case where the same cell and the neighboring cell are unique, the identity redistribution is triggered when the Relay UE switches. For the case where the same eNB (evolved base station) and the neighboring eNB are unique, the identity re-allocation is triggered when the Relay UE crosses the eNB. For the only situation in the entire network, No reconfiguration is required.
  • the first part identifier of the Relay UE allocated by the network side in the embodiment of the present invention is the same cell and the neighboring cell.
  • the first part identifier of the other Relay UEs is different; or the first part identifier of the Relay UE is different from the first part identifier of the same base station and other Relay UEs of the neighboring base station; or the Relay UE and other Relays activated in the network
  • the first part of the UE is identified differently.
  • the network side may also allocate the first part identifier to the Relay UE according to the absolute geographic area.
  • the Relay UE is different from the first part identifier of other Relay UEs in a certain geographical area.
  • the first Relay UE in the embodiment of the present invention includes:
  • a first determining module 300 configured to determine a first layer 2 identifier
  • the first processing module 301 is configured to perform data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same And the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific part of the Remote UE. logo.
  • the first determining module 300 is specifically configured to: request a specific identifier from the network side, and use the layer 2 identifier assigned by the network side as the first layer 2 identifier; or request a specific identifier from the network side, and according to the pre
  • the second part identifier of the configuration is combined with the first part identifier assigned by the network side into the first layer 2 identifier; or the specific identifier is requested from the network side, and the second part identifier allocated by the Relay UE and the first part allocated by the network side are The logos are combined into a first layer 2 logo.
  • the first processing module 301 is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier to notify the remote UE The specific identifier of the Relay UE.
  • the first processing module 301 is further configured to: broadcast information used to indicate the number of bits occupied by the first part identifier in the identifier of the first layer 2.
  • the first processing module 301 is further configured to: after using the first layer 2 identifier to perform data transmission with the Remote UE identified by the second layer 2, after receiving the one-to-one communication request of the Remote UE, , the second part identifier is assigned to the Remote UE.
  • the first processing module 301 is specifically configured to: allocate a second part identifier to the remote UE by using a one-to-one communication setup message; where the source layer 2 in the one-to-one communication setup message is identified as The first layer 2 is identified, and the destination layer 2 is identified as the source layer 2 identifier used in the one-to-one communication request.
  • the first processing module 301 is specifically configured to: if the one-to-one communication request includes information that is not the layer 2 identifier, use the one that is included in the one-to-one communication request to identify the remote The non-layer 2 identification information of the UE is placed in the one-to-one communication setup message.
  • the first processing module 301 is further configured to: if a one-to-one communication request sent by different Remote UEs is cancelled If the source layer 2 identifiers in the information are the same, the second part identifiers are allocated to the plurality of Remote UEs through the one-to-one communication setup message.
  • the first part identifier of the Relay UE is different from the first part identifier of the same cell and other Relay UEs of the neighboring cell; or the first part of the Relay UE identifies the same base station and other Relay UEs of the neighboring base station.
  • the first part of the identifier is different; or the Relay UE is different from the first part identifier of other Relay UEs activated in the network.
  • the first processing module 301 is further configured to determine the first layer 2 identifier after determining that the network side trigger layer 2 identifies the reallocation or determines that the layer 2 identity reallocation condition is met.
  • the first type of Remote UE in the embodiment of the present invention includes:
  • a second determining module 400 configured to determine a second layer 2 identifier
  • a second processing module 401 configured to use the second layer 2 identifier to perform data transmission with a Relay UE identified by using the first layer 2, where the first layer 2 identifier and the second layer 2 identifier include the same
  • the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific part of the Remote UE. logo.
  • the second processing module 401 is further configured to: determine, by using the first layer 2 identifier that is broadcast by the Relay UE, the first part identifier of the Relay UE.
  • the first part identifier of the Relay UE is determined by using information that is used by the Relay UE to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the second processing module 401 is further configured to: send a one-to-one communication request to the Relay UE, so that the Relay UE allocates a second part identifier to the Remote UE; wherein the one-to-one communication
  • the source layer 2 of the request is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the first part identifier and the second part identifier that are the same as the first layer 2 identifier.
  • the second portion is identified as a fixed value or assigned by the Remote UE.
  • the second processing module 401 is further configured to: place the non-layer 2 identification information used to identify the Remote UE into the one-to-one communication request.
  • the second processing module 401 is further configured to: determine, according to the received one-to-one communication setup message from the Relay UE, the second part identifier that is allocated by the Relay UE to the Remote UE.
  • the second determining module 400 is further configured to determine the second layer 2 identifier after determining that the Relay UE reselection needs to be performed.
  • the Relay UE of FIG. 3 may also be the Remote UE of FIG. 4; the Remote UE of FIG. 4 may also be the Relay UE of FIG. 3, so the functions of the Relay UE and the Remote UE may be combined in one.
  • the entity that is, the modules of the Relay UE and the Remote UE are in one entity
  • the function of the Relay UE or the function of the Remote UE is selected as needed.
  • the Relay UE of FIG. 3 may also be the Remote UE of FIG. 4 for different application scenarios;
  • the Remote UE of 4 may also be the Relay UE of FIG. 3, so the functions of the Relay UE and the Remote UE may be combined in one entity (ie, the modules of the Relay UE and the Remote UE are in one entity), and the function of using the Relay UE is selected according to the need. Or the function of the Remote UE.
  • the second Relay UE of the embodiment of the present invention includes: a processor 501, configured to read a program in the memory 504, and perform the following process: determining a first layer 2 identifier; using the transceiver 502 to use the The layer 2 identifies the data transmission with the Remote UE identified by the second layer 2; the transceiver 502 is configured to receive and transmit data under the control of the processor 501.
  • the first layer 2 identifier and the second layer 2 identifier include the same first part identifier assigned by the network side, and the second layer 2 identifier further includes a second part identifier allocated by the Relay UE.
  • the first part is identified as a specific identifier of the Relay UE, and the second part is identified as a specific identifier of the Remote UE.
  • the processor 501 is specifically configured to: request a specific identifier from the network side, and use the layer 2 identifier assigned by the network side as the first layer 2 identifier; or request a specific identifier from the network side, and according to the pre-configured
  • the second part identifier is combined with the first part identifier allocated by the network side into the first layer 2 identifier; or, the specific identifier is requested from the network side, and the second part identifier allocated by the Relay UE is combined with the first part identifier allocated by the network side.
  • the processor 501 is specifically configured to: request a specific identifier from the network side, and use the layer 2 identifier assigned by the network side as the first layer 2 identifier; or request a specific identifier from the network side, and according to the pre-configured
  • the second part identifier is combined with the first part identifier allocated by the network side into the first layer 2 identifier; or, the specific identifier is requested from the network side, and the second part
  • the processor 501 is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier to notify the Remote UE of the Relay.
  • the specific identity of the UE is further configured to: before the data transmission by using the first layer 2 identifier and the Remote UE identified by using the second layer 2, broadcast the first layer 2 identifier to notify the Remote UE of the Relay. The specific identity of the UE.
  • the first layer 2 identifier further includes other identifiers, where the other identifiers are fixed values or allocated by the Relay UE or allocated by the network side.
  • the processor 501 is further configured to: broadcast information used to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the processor 501 is further configured to: after using the first layer 2 identifier to perform data transmission with the Remote UE identified by the second layer 2, after receiving the one-to-one communication request of the Remote UE, The Remote UE allocates a second part identifier.
  • the processor 501 is specifically configured to: allocate a second part identifier to the remote UE by using a one-to-one communication setup message; where the source layer 2 in the one-to-one communication setup message is identified as the first Layer 2 identifies that destination layer 2 identifies the source layer 2 identity used in the one-to-one communication request.
  • the processor 501 is specifically configured to: if the one-to-one communication request includes the information that is not the layer 2 identifier, the information that is included in the one-to-one communication request is used to identify the remote UE.
  • the non-layer 2 identification information is placed in the one-to-one communication setup message.
  • the processor 501 is further configured to: if the source layer 2 identifiers in the one-to-one communication request message sent by different remote UEs are the same, allocate the second part to the plurality of remote UEs by using a one-to-one communication setup message. logo.
  • the first part identifier of the Relay UE is different from the first part identifier of the same cell and other Relay UEs of the neighboring cell; or the first part identifier of the Relay UE is the same as the same base station and other neighboring base stations.
  • the first part identifier of the Relay UE is different; or the Relay UE is different from the first part identifier of other Relay UEs activated in the network.
  • the processor 501 is further configured to determine the first layer 2 identifier after determining that the network side trigger layer 2 identifies the reallocation or determines that the layer 2 identifier reassignment condition is met.
  • bus 500 may include any number of interconnected buses and bridges, and bus 500 will include one or more processors and memory 504 represented by general purpose processor 501.
  • the various circuits of the memory are linked together.
  • the bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 503 provides an interface between bus 500 and transceiver 502.
  • Transceiver 502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 502 receives external data from other devices.
  • the transceiver 502 is configured to send the processed data of the processor 501 to other devices.
  • a user interface 505 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 501 is responsible for managing the bus 500 and the usual processing, running a general purpose operating system as described above.
  • the memory 504 can be used to store data used by the processor 501 when performing operations.
  • the processor 501 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • the second remote UE of the embodiment of the present invention includes: a processor 601, configured to read a program in the memory 604, and perform the following process: determining a second layer 2 identifier; using the transceiver 602 to use the The second layer 2 identifier is used for data transmission by using the relay UE identified by the first layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same first part identifier assigned by the network side, and The second layer 2 identifier further includes a second part identifier that is allocated by the Relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE.
  • the transceiver 602 is configured to receive and transmit data under the control of the processor 601.
  • the processor 601 is further configured to: determine, by using the first layer 2 identifier that is broadcast by the Relay UE, the first part identifier of the Relay UE, where the first layer 2 identifier further includes a relay UE The second part outside the specific identifier and the information indicating the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the processor 601 is further configured to: send a one-to-one communication request to the Relay UE, so that the Relay UE allocates a second part identifier to the Remote UE; where the one-to-one communication request is used.
  • the source layer 2 is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the first portion identifier and the second portion identifier that are the same as the first layer 2 identifier.
  • the second part is identified as a fixed value or assigned by the Remote UE.
  • the processor 601 is further configured to: place the non-layer 2 identification information used to identify the Remote UE.
  • the one-to-one communication request is further configured to: place the non-layer 2 identification information used to identify the Remote UE.
  • the processor 601 is further configured to: determine, according to the received one-to-one communication setup message from the Relay UE, the second part identifier that is allocated by the Relay UE to the Remote UE.
  • the processor 601 is further configured to determine the second layer 2 identifier after determining that the Relay UE reselection is required.
  • bus 600 may include any number of interconnected buses and bridges, and bus 600 will include one or more processors and memory 604 represented by general purpose processor 601. The various circuits of the memory are linked together.
  • the bus 600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 603 provides an interface between bus 600 and transceiver 602.
  • Transceiver 602 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 602 receives external data from other devices.
  • the transceiver 602 is configured to send the processed data of the processor 601 to other devices.
  • a user interface 605 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 601 is responsible for managing the bus 600 and the usual processing, running a general purpose operating system as described above.
  • the memory 604 can be used to store data used by the processor 601 in performing operations.
  • the processor 601 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • the Relay UE may also function as a Remote UE for different application scenarios; the Remote UE may also function as a Relay UE, so the functions of the Relay UE and the Remote UE may be combined in one entity (ie, the modules of the Relay UE and the Remote UE are in the In an entity, the function of the Relay UE or the function of the Remote UE is selected as needed.
  • the Relay UE of FIG. 5 may also be the Remote UE of FIG. 6; the Remote UE of FIG. 6 may also be the Relay UE of FIG. 5, so the functions of the Relay UE and the Remote UE may be combined into one.
  • the entity that is, the modules of the Relay UE and the Remote UE are in one entity
  • the function of the Relay UE or the function of the Remote UE is selected as needed.
  • the embodiment of the present invention further provides a method for performing data transmission.
  • the device corresponding to the method is a Relay UE in a system for performing data transmission according to an embodiment of the present invention, and the method solves the problem.
  • the device is similar, so the implementation of the method can be referred to the implementation of the device, and the repeated description will not be repeated.
  • the first method for performing data transmission in the embodiment of the present invention includes:
  • Step 700 The Relay UE determines the identifier of the first layer 2;
  • Step 701 The Relay UE uses the first layer 2 identifier to perform data transmission with the Remote UE identified by using the second layer 2; wherein the first layer 2 identifier and the second layer 2 identifier include the same
  • the second part of the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE.
  • the relay UE determines the identifier of the first layer 2, including: the relay UE requests a specific identifier from the network side, and identifies the layer 2 identifier allocated by the network side as the first layer 2 identifier; or, the Relay UE Determining, by the network side, a specific identifier, and combining, according to the pre-configured second part identifier, the first part identifier allocated by the network side into the first layer 2 identifier; or, the Relay UE requests a specific identifier from the network side, and the relay is The second part identifier assigned by the UE is combined with the first part identifier assigned by the network side into the first layer 2 identifier.
  • the method further includes: the Relay UE broadcasts the first layer 2 identifier to notify the remote UE The specific identifier of the Relay UE.
  • the first layer 2 identifier further includes other identifiers, where the other identifiers are fixed values or allocated by the Relay UE or allocated by the network side.
  • the Relay UE further broadcasts information used to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the method further includes: after the one-to-one communication request of the Remote UE is received by the Relay UE, , the second part identifier is assigned to the Remote UE.
  • the relay UE allocates the second part identifier to the at least one remote UE, including: the Relay UE assigns a second part identifier to the Remote UE by using a one-to-one communication setup message; wherein the one-to-one communication establishment
  • the source layer 2 in the message is identified as the first layer 2 identifier
  • the destination layer 2 is identified as the source layer 2 identifier used in the one-to-one communication request.
  • the relay UE allocates the second part identifier to the at least one remote UE, and further includes: if the one-to-one communication request includes the information of the non-layer 2 identifier, the Relay UE will be the one-to-one The non-layer 2 identification information included in the communication request for identifying the Remote UE is placed in the one-to-one communication setup message.
  • the relay UE allocates the second part identifier to the at least one remote UE, and the method further includes: if the source layer 2 identifiers in the one-to-one communication request message sent by different remote UEs are the same, the relay UE passes the pair A communication setup message assigns a second partial identity to a plurality of Remote UEs.
  • the first part identifier of the Relay UE is different from the first part identifier of the same cell and other Relay UEs of the neighboring cell; or the first part of the Relay UE identifies the same base station and other Relay UEs of the neighboring base station.
  • the first part of the identifier is different; or the Relay UE is different from the first part identifier of other Relay UEs activated in the network.
  • the relay UE determines that the network side trigger layer 2 identifies the redistribution or determines that the layer 2 identifier redistribution condition is satisfied.
  • a method for performing data transmission is also provided in the embodiment of the present invention.
  • the device corresponding to the method is a Remote UE in a system for performing data transmission according to an embodiment of the present invention, and the method solves the problem.
  • the principle is similar to the device, so the implementation of the method can be referred to the implementation of the device, and the details are not repeated here.
  • the second method for performing data transmission in the embodiment of the present invention includes:
  • Step 800 The Remote UE determines the identifier of the second layer 2;
  • Step 801 The Remote UE uses the second layer 2 identifier to perform data transmission with the Relay UE identified by using the first layer 2, where the first layer 2 identifier and the second layer 2 identifier include the same
  • the second part of the second layer 2 identifier further includes a second part identifier that is allocated by the relay UE, where the first part identifier is a specific identifier of the Relay UE, and the second part identifier is a specific identifier of the Remote UE.
  • the method further includes: determining, by the remote UE, the first layer identifier of the relay UE by using the first layer 2 identifier that is broadcast by the relay UE.
  • the first layer 2 identifier further includes a second part other than the specific identifier of the Relay UE.
  • the Remote UE determines the first part identifier of the Relay UE by using information that is used by the Relay UE to indicate the number of bits occupied by the first part identifier in the first layer 2 identifier.
  • the method further includes: the remote UE sending a one-to-one communication request to the relay UE, so that the relay UE allocates the second part identifier to the remote UE;
  • the source layer 2 used by the one-to-one communication request is identified as the third layer 2 identifier
  • the destination address is the first layer 2 identifier
  • the third layer 2 identifier includes the same identifier as the first layer 2 identifier.
  • a portion of the identifier and a second portion identifier, the second portion being identified as a fixed value or assigned by the Remote UE.
  • the remote UE sends a one-to-one communication request to the relay UE by using the third layer 2 identifier, and the method further includes: the remote UE placing the non-layer 2 identification information used to identify the remote UE in the one For a communication request.
  • the method further includes: the remote UE determining, according to the received one-to-one communication setup message from the relay UE, that the relay UE is allocated to the remote UE.
  • the second part of the logo is the remote UE determining, according to the received one-to-one communication setup message from the relay UE, that the relay UE is allocated to the remote UE. The second part of the logo.
  • the method further includes: the Remote UE determines that a Relay UE reselection is required.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the network element identified by the Relay UE allocation layer 2 is a DPF (Direct Provisioning Function) device.
  • the layer 2 identifier has a total length of 24 bits, the first part includes a high 16 bits, and the second part includes a lower 8 bits.
  • the second part of the Layer 2 identity of the Relay UE is fixed to all zeros.
  • the Remote UE initiates a one-to-one communication request using the second portion fixed to '01'.
  • the Remote UE1 is within the coverage of the Relay UE1, and the Remote UE1 selects the Relay UE1 as the Relay UE of its access network.
  • Remote UE2 is within the coverage of Relay UE2, and Remote UE2 selects Relay.
  • UE2 acts as the Relay UE of its access network.
  • the method for performing data transmission in Embodiment 1 of the present invention includes:
  • Step 1 Relay UE1 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for allocating layer 2 identification.
  • DPF network element
  • Step 1a Relay UE2 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for assigning layer 2 identification.
  • DPF network element
  • Step 2 The DPF assigns the first part identifier of the layer 2 identifier to the Relay UE1, and the first part identifier of the assigned Relay UE1 is expressed as ‘F000’ in hexadecimal.
  • Step 2a The DPF assigns the first part identifier of the layer 2 identifier to the Relay UE2, and the first part identifier of the assigned Relay UE2 is expressed in hexadecimal notation as '0F00'.
  • Step 3 Relay UE1 sends a Relay discovery message on PC5, where the ProSe Relay UE ID carried in the discovery message sent by Relay UE1 is ‘F00000’.
  • Step 3a Relay UE2 sends a Relay discovery message on PC5, where the ProSe Relay UE ID carried in the discovery message sent by Relay UE2 is '0F0000'.
  • Step 4 The Remote UE1 initiates a one-to-one communication request to the Relay UE1, where the source layer 2 of the communication request message sent by the Remote UE1 is identified as 'F00001', and the destination layer 2 is identified as 'F00000', and the message carries a 40-bit random Number '000000008B'.
  • Step 4a The Remote UE2 initiates a one-to-one communication request to the Relay UE2, where the source layer 2 of the communication request message sent by the Remote UE2 is identified as '0F0001', and the destination layer 2 is identified as '0F0000', and the message carries a 40-bit random The number '0000560000'.
  • Step 5 Relay UE1 sends a one-to-one communication setup message to Remote UE1.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE1 is identified as 'F00000', and the destination layer 2 is identified as 'F00001'.
  • the message carries the UE identifier '000000008B' used by the Remote UE1 in step 4 and the relay UE1 is Remote.
  • Layer 2 assigned by UE1 identifies the second portion '0C'.
  • Step 5a Relay UE2 sends a one-to-one communication setup message to Remote UE2.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE2 is identified as '0F0000', and the destination layer 2 is identified as '0F0001'.
  • the message carries the UE identifier '0000560000' used by the Remote UE2 in step 4a and the relay UE2 is Remote.
  • Layer 2 assigned by UE2 identifies the second part '0C'.
  • Step 6 Relay UE1 performs data transmission with Remote UE1, where layer 2 used by Relay UE1 is identified as 'F00000', and layer 2 used by Remote UE1 is identified as 'F0000C'.
  • Step 6a Relay UE2 performs data transmission with Remote UE2, wherein layer 2 used by Relay UE2 is identified as '0F0000', and layer 2 used by Remote UE2 is identified as '0F000C'.
  • step 1 can be performed first, and then step 1a is performed; Step 1a may also be performed first, and then step 1 may be performed; step 1 and step 1a may also be performed simultaneously.
  • step 2 and step 2a step 3 and step 3a, step 4 and step 4a, step 5 and step 5a, and step 6 and step 6a.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the network element identified by the Relay UE allocation layer 2 is a DPF (Direct Provisioning Function), and the layer 2 identifier has a total length of 24 bits, the first part includes a high 16 bits, and the second part includes a lower 8 bits.
  • the second part of the Layer 2 identity of the Relay UE is fixed to all zeros.
  • the Remote UE initiates a one-to-one communication request using the second portion fixed to '01'.
  • both the Remote UE1 and the Remote UE2 are within the coverage of the Relay UE1, and both the Remote UE1 and the Remote UE2 select the Relay UE1 as the Relay UE of the access network.
  • the method for performing data transmission in Embodiment 2 of the present invention includes:
  • Step 1 Relay UE1 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for allocating layer 2 identification.
  • DPF network element
  • Step 1a Relay UE2 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for assigning layer 2 identification.
  • DPF network element
  • Step 2 The DPF assigns the first part identifier of the layer 2 identifier to the Relay UE1, and the first part identifier of the assigned Relay UE1 is expressed as ‘F000’ in hexadecimal.
  • Step 2a The DPF assigns the first part identifier of the layer 2 identifier to the Relay UE2, and the first part identifier of the assigned Relay UE2 is expressed in hexadecimal notation as '0F00'.
  • Step 3 Relay UE1 sends a Relay discovery message on PC5, where the ProSe Relay UE ID carried in the discovery message sent by Relay UE1 is 'F00000'.
  • Step 3a Relay UE2 sends a Relay discovery message on PC5, where the ProSe Relay UE ID carried in the discovery message sent by Relay UE2 is '0F0000'.
  • Step 4 The Remote UE1 initiates a one-to-one communication request to the Relay UE1, where the source layer 2 of the communication request message sent by the Remote UE1 is identified as 'F00001', and the destination layer 2 is identified as 'F00000', and the message carries a 40-bit random Number '000000008B'.
  • Step 4a The Remote UE2 initiates a one-to-one communication request to the Relay UE1, where the source layer 2 of the communication request message sent by the Remote UE2 is identified as 'F00001', and the destination layer 2 is identified as 'F00000', and the message carries a 40-bit random The number '0000560000'.
  • Step 5 Relay UE1 sends a one-to-one communication setup message to Remote UE1 and Remote UE2.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE1 is identified as 'F00000', and the destination layer 2 is identified as 'F00001'.
  • the message carries the UE identifier '000000008B' used by the Remote UE1 in step 4 and the relay UE1 is Remote.
  • the layer 2 identifier assigned by UE1 corresponds to the second part '0C', and corresponds to the UE identifier '0000560000' used by Remote UE2 in step 4a and the layer 2 identifier second part '09' assigned by Relay UE1 to Remote UE2.
  • Step 6 Relay UE1 performs data transmission with Remote UE1, where layer 2 used by Relay UE1 is identified as 'F00000', and layer 2 used by Remote UE1 is identified as 'F0000C'.
  • Step 6a Relay UE1 performs data transmission with Remote UE2, where layer 2 used by Relay UE1 is identified as 'F00000', and layer 2 used by Remote UE2 is identified as '0F0009'.
  • step 1 may be performed first, and then step 1a may be performed; step 1a may be performed first, and then step 1 may be performed; step 1 and step 1a may also be performed simultaneously.
  • step 2 and step 2a step 3 and step 3a, step 4 and step 4a, and step 6 and step 6a.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the network element identified by the Relay UE allocation layer 2 is DPF
  • the total length of the layer 2 identifier is 24 bits
  • the first part includes the upper 16 bits
  • the second part includes the lower 8 bits.
  • the second part of the Layer 2 identity of the Relay UE is also assigned by the DPF.
  • the Remote UE itself selects the second part of the layer 2 identity to initiate a one-to-one communication request.
  • the Remote UE1 is within the coverage of the Relay UE1, and the Remote UE1 selects the Relay UE1 as the Relay UE of its access network.
  • Remote UE2 is within the coverage of Relay UE2, and Remote UE2 selects Relay UE2 as the Relay UE of its access network.
  • the method for performing data transmission in Embodiment 3 of the present invention includes:
  • Step 1 Relay UE1 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for allocating layer 2 identification.
  • DPF network element
  • Step 1a Relay UE2 sends a Relay UE layer 2 identity allocation request to the network element (DPF) responsible for assigning layer 2 identification.
  • DPF network element
  • Step 2 The DPF assigns a layer 2 identifier to the Relay UE1, and the layer 2 identifier of the assigned Relay UE1 is expressed in hexadecimal as 'F00006'.
  • Step 2a The DPF allocates a layer 2 identifier for Relay UE2, and the first portion of the assigned Relay UE2 is represented by hexadecimal as '0F0009'.
  • Step 3 Relay UE1 sends a Relay discovery message on PC5, where the ProSe Relay UE ID carried in the discovery message sent by Relay UE1 is 'F00006'.
  • Step 3a The Relay UE2 sends a Relay discovery message on the PC5, where the ProSe Relay UE ID carried in the discovery message sent by the Relay UE2 is '0F0009'.
  • Step 4 The remote UE1 initiates a one-to-one communication request to the Relay UE1, where the source layer 2 of the communication request message sent by the Remote UE1 is identified as 'F00021', and the upper 16 bits are the same as the Relay UE1, and the lower 8 bits are selected by the UE.
  • the Remote UE cannot select the layer 2 identifier used by the Relay UE. Destination layer 2 is identified as 'F00006' and the message carries a 40-bit random number '000000008B'.
  • Step 4a The Remote UE2 initiates a one-to-one communication request to the Relay UE2, where the Remote UE2 sends the communication.
  • the source layer 2 of the message request message is identified as '0F000B', the upper 16 bits of which are the same as the Relay UE1, the lower 8 bits are selected by themselves, and the Remote UE cannot select the layer 2 identifier used by the Relay UE.
  • the destination layer 2 is identified as '0F0009' and the message carries a 40-bit random number '0000560000'.
  • Step 5 Relay UE1 sends a one-to-one communication setup message to Remote UE1.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE1 is identified as 'F00006', and the destination layer 2 is identified as 'F00021'.
  • the message carries the UE identifier '000000008B' used by the Remote UE1 in step 4 and the relay UE1 is Remote.
  • Layer 2 assigned by UE1 identifies the second portion '0C'.
  • Step 5a Relay UE2 sends a one-to-one communication setup message to Remote UE2.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE2 is identified as '0F0009', and the destination layer 2 is identified as '0F000B'.
  • the message carries the UE identifier '0000560000' used by the Remote UE2 in step 4a and the relay UE2 is Remote.
  • Layer 2 assigned by UE2 identifies the second part '0B'.
  • Step 6 Relay UE1 performs data transmission with Remote UE1, where layer 2 used by Relay UE1 is identified as 'F00000', and layer 2 used by Remote UE1 is identified as 'F0000C'.
  • Step 6a Relay UE2 performs data transmission with Remote UE2, wherein layer 2 used by Relay UE2 is identified as '0F0000', and layer 2 used by Remote UE2 is identified as '0F000B'.
  • Relay UE1 and Remote UE1 are performing one-to-one communication, and Relay UE2 and Remote UE2 are performing one-to-one communication.
  • Remote UE2 reselects Relay UE1 as Relay UE that communicates with the network.
  • the remote UE2 initiates a one-to-one communication request to the Relay UE1, and the source layer 2 of the communication request message sent by the Remote UE2 is identified as 'F00010', and its upper 16 bits are the same as the Relay UE1, and the lower 8 bits are selected by itself, and the Remote UE cannot select the same.
  • Relay UE1 sends a one-to-one communication setup message to Remote UE2.
  • the source layer 2 of the one-to-one communication setup message sent by the relay UE1 is identified as 'F00006', and the destination layer 2 is identified as 'F00010'.
  • the message carries the UE identifier '0000560000' used by the Remote UE1 in step 4 and the relay UE1 is Remote.
  • Layer 2 assigned by UE2 identifies the second portion '10'.
  • the relay UE1 performs data transmission with the Remote UE1 and the Remote UE2, wherein the layer 2 used by the Relay UE1 is identified as 'F00000', the layer 2 used by the Remote UE1 is identified as 'F0000C', and the layer 2 used by the Remote UE2 is identified as 'F00010'.
  • the Relay UE in the embodiment of the present invention uses the first layer 2 identifier to perform data transmission with the Remote UE identified by the second layer 2.
  • the first layer 2 identifier and the second layer 2 identifier include the same first part identifier allocated by the network side, and the second layer 2 identifier further includes a second part allocated by the Relay UE.
  • the sub-identification, the first part is identified as the specific identifier of the Relay UE, and the second part is identified as the specific identifier of the Remote UE, so that the identifier of the PC5 interface is unique within a certain range, and the identification of the PC5 interface is prevented from colliding within a certain range, thereby ensuring the PC5.
  • the identifier of the interface can be applied to the UE to Network Relay scenario; the system performance is further improved.
  • 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 apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • 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.

Landscapes

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

Abstract

Conformément à des modes de réalisation, la présente invention se rapporte au domaine technique des communications sans fil, et concerne, en particulier, un procédé et un dispositif de transmission de données, qui sont utilisés pour résoudre le problème existant dans l'état de la technique selon lequel il existe un conflit d'identificateur puisqu'un identificateur d'une interface PC5 ne peut pas être appliqué à un scénario de relais entre un équipement utilisateur (UE) et un réseau. Dans les modes de réalisation de la présente invention, un UE de relais utilise un premier identificateur de couche 2 pour réaliser une transmission de données avec un UE à distance à l'aide d'un second identificateur de couche 2. Puisque le premier identificateur de couche 2 et le second identificateur de couche 2 comprennent le même identificateur spécifique de l'UE de relais qui est alloué par un côté réseau, et que le second identificateur de couche 2 comprend également un identificateur spécifique de l'UE à distance qui est alloué par l'UE de relais, un identificateur d'une interface PC5 est unique dans une certaine plage, permettant ainsi d'éviter un conflit de l'identificateur de l'interface PC5 dans la certaine plage, et de garantir ainsi que l'identificateur de l'interface PC5 peut être appliqué à un scénario de relais entre un UE et un réseau.
PCT/CN2016/088947 2015-08-11 2016-07-06 Procédé et dispositif de transmission de données WO2017024909A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510491101.8A CN106454806B (zh) 2015-08-11 2015-08-11 一种进行数据传输的方法和设备
CN201510491101.8 2015-08-11

Publications (1)

Publication Number Publication Date
WO2017024909A1 true WO2017024909A1 (fr) 2017-02-16

Family

ID=57982990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/088947 WO2017024909A1 (fr) 2015-08-11 2016-07-06 Procédé et dispositif de transmission de données

Country Status (2)

Country Link
CN (1) CN106454806B (fr)
WO (1) WO2017024909A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2617614A (en) * 2022-04-14 2023-10-18 Samsung Electronics Co Ltd User equipment identifiers

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108307536B (zh) * 2016-08-11 2023-04-25 中兴通讯股份有限公司 一种路由方法和设备
CN108924957A (zh) * 2017-03-24 2018-11-30 电信科学技术研究院 一种适配层标识的配置方法及装置
CN111417078B (zh) * 2019-01-07 2022-04-15 中国移动通信有限公司研究院 一种中继终端的选择方法和终端
US20210400745A1 (en) * 2020-06-18 2021-12-23 Asustek Computer Inc. Method and apparatus for performing a pc5 unicast link establishment procedure in a wireless communication system
CN115175176A (zh) * 2021-04-01 2022-10-11 华为技术有限公司 一种中继通信方法及装置
WO2022222048A1 (fr) * 2021-04-20 2022-10-27 Oppo广东移动通信有限公司 Procédé d'émission, dispositif terminal, dispositif de réseau et système de communication
WO2023283804A1 (fr) * 2021-07-13 2023-01-19 Oppo广东移动通信有限公司 Procédé et appareil de communication sans fil, et dispositif terminal
CN116847332A (zh) * 2022-03-25 2023-10-03 维沃移动通信有限公司 远端终端的识别符的分配方法、装置及终端

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013165695A1 (fr) * 2012-04-30 2013-11-07 Alcatel Lucent Communications sécurisées pour des dispositifs informatiques utilisant des services de proximité
US20140004796A1 (en) * 2012-06-27 2014-01-02 Alcatel-Lucent Usa Inc. Discovering proximity devices in broadband networks
CN103546926A (zh) * 2012-07-09 2014-01-29 中兴通讯股份有限公司 无线局域网邻居用户设备的确定方法及装置
CN104796849A (zh) * 2015-04-16 2015-07-22 电信科学技术研究院 一种对数据包进行处理的方法和设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103517371B (zh) * 2012-06-18 2017-09-08 中国移动通信集团公司 一种设备到设备的通信方法、装置及系统
US20150146628A1 (en) * 2013-11-26 2015-05-28 Qualcomm Incorporated Techniques for handling reconfiguration messages and uplink data indications
CN104768122B (zh) * 2015-03-16 2018-08-24 深圳酷派技术有限公司 基于终端直连通信的数据共享方法、装置和终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013165695A1 (fr) * 2012-04-30 2013-11-07 Alcatel Lucent Communications sécurisées pour des dispositifs informatiques utilisant des services de proximité
US20140004796A1 (en) * 2012-06-27 2014-01-02 Alcatel-Lucent Usa Inc. Discovering proximity devices in broadband networks
CN103546926A (zh) * 2012-07-09 2014-01-29 中兴通讯股份有限公司 无线局域网邻居用户设备的确定方法及装置
CN104796849A (zh) * 2015-04-16 2015-07-22 电信科学技术研究院 一种对数据包进行处理的方法和设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2617614A (en) * 2022-04-14 2023-10-18 Samsung Electronics Co Ltd User equipment identifiers

Also Published As

Publication number Publication date
CN106454806B (zh) 2019-07-19
CN106454806A (zh) 2017-02-22

Similar Documents

Publication Publication Date Title
WO2017024909A1 (fr) Procédé et dispositif de transmission de données
US11337271B2 (en) Apparatus and method for providing communication based on device-to-device relay service in mobile communication system
TWI587729B (zh) A method and apparatus for resource allocation
CN107889080B (zh) 一种支持远端用户设备移动性的方法及装置
JP6651633B2 (ja) データスケジューリング方法、基地局およびシステム
CN107231623B (zh) 一种数据调度方法、基站及系统
WO2016202227A1 (fr) Procédé et dispositif de sélection et de notification d'identifiant de liaison de couche 2
WO2016161900A1 (fr) Procédé et dispositif de transmission de données
WO2018090491A1 (fr) Procédé d'indication et dispositif associé
JP2021500758A (ja) リソース構成方法、端末デバイス及びネットワークデバイス
US8995319B2 (en) Terminal of supporting direct communication using infra communication and direct communication method of the same
CN111093211A (zh) 一种控制信令传输方法、装置和存储介质
EP4185009A1 (fr) Procédé, appareil et système d'acheminement de paquets
US20230370948A1 (en) Method and Apparatus for Path Switch
EP3226648A1 (fr) Procédé, dispositif et système pour transmettre un paquet de données
CN115136651B (zh) 切换方法和通信装置
KR101922041B1 (ko) Ｄ2ｄ 통신에서의 ｉｐ 주소 할당 방법 및 사용자 기기
KR20240017923A (ko) 데이터 전송 방법, 사용자 기기, 서빙 노드 및 기록 매체
WO2021213014A1 (fr) Procédé et appareil de communication
US20200374963A1 (en) Method, system and computer programs for the transmission of infrequent small data in a telecommunication system
US20160174269A1 (en) Methods and Apparatus for Device to Device Communication
WO2023185992A1 (fr) Procédé et appareil de communication par relais
WO2024027412A1 (fr) Procédé de communication, appareil de communication et système de communication
JP7166251B2 (ja) 通信システム及び通信方法
US20210076254A1 (en) Handling of user equipment identifiers over pc5 interface in pc5-based user equipment to network relay

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16834533

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16834533

Country of ref document: EP

Kind code of ref document: A1