CN106470491B

CN106470491B - Method and device for controlling relay user equipment and user equipment

Info

Publication number: CN106470491B
Application number: CN201510501367.6A
Authority: CN
Inventors: 陈琳; 黄莹; 陈玉芹; 汪梦珍; 罗薇
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-08-14
Filing date: 2015-08-14
Publication date: 2022-01-28
Anticipated expiration: 2035-08-14
Also published as: WO2017028743A1; CN106470491A

Abstract

The invention provides a relay user equipment control method, a relay user equipment control device and user equipment. Wherein, the method comprises the following steps: the method comprises the steps that UE acquires relay information, wherein the relay information is sent by a network control node or is preset in the UE; and the UE performs relay initialization and/or relay configuration according to the relay information. The invention solves the problem that effective control means is not provided for the Relay control of the Relay UE in the Relay transmission scene of the UE in the partial coverage area in the related technology, and realizes the Relay control of the Relay UE in the Relay transmission scene of the UE in the partial coverage area.

Description

Method and device for controlling relay user equipment and user equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for controlling a relay user equipment, and a user equipment.

Background

With the development of wireless multimedia services, the demand for high data rate and user experience is increasing, and thus higher requirements are placed on the system capacity and coverage of the conventional cellular network. Application scenarios such as public safety, social networking, near field data sharing, local advertising, etc. have increased the demand for Proximity Services (ProSe) that enable people to know and communicate with people or things nearby. Given the significant limitations of conventional base station-centric cellular networks in terms of high data rates and support for proximity services, Device-to-Device (D2D) technology has emerged as a representative new direction in future communication technology. The application of the D2D technology can reduce the burden of the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and improve the robustness of the network infrastructure, and well meet the requirements of the high data rate service and the proximity service. The D2D technology is also called Proximity Services (ProSe), in which UEs transmit data via a single-edge link (SL).

The D2D technology can operate in a licensed or unlicensed band, allowing multiple D2D capable UEs (i.e., D2D UEs, D2D User Equipment, referred to as D2D UEs for short) to perform direct discovery/direct communication with or without network infrastructure. Application scenarios of D2D include:

1) the UE1 and the UE2 perform data interaction under the coverage of a cellular network, and user plane data does not pass through a network infrastructure, as in scenario 1 in fig. 1;

2) in UE Relay transmission in a partial coverage area, as shown in scenario 2 in fig. 1, also referred to as a UE-to-Network Relay (UE-to-Network Relay) scenario, the UE3 may communicate with a Network side in an existing Long Term Evolution (LTE) manner, and may also forward data of the UE4 without Network coverage to a base station in a D2D manner, where the UE4 is referred to as a routing UE (remote UE), and the UE3 is referred to as a Relay UE (Relay UE);

3) in the event that the cellular network is not operating properly, allowing inter-device Relay communication, as in scenario 3 of fig. 1, also referred to as a UE-to-UE Relay (UE-to-UE Relay) scenario, the UE6 may forward packets between the UE5 and the UE7, the UE6 being referred to as a Relay UE, and the UE5 and the UE7 being referred to as a Remote UE.

The inventor of the invention finds out in the research process that: in the device direct connection systems in scenarios 2 and 3, before the Remote UE performs data forwarding with the Relay UE, the Remote UE needs to discover the Relay UE first. According to the definition of SA, Relay discovery includes two modes: 1) in the Relay discovery mode one, as shown in fig. 2, Relay UE periodically sends a Relay notification (Relay notification) message, and if the peripheral Relay UE monitors the message, it considers that Relay is found, and may initiate a D2D communication request, and Relay UE forwards data of the Relay UE to the network; 2) in Relay discovery mode two, as shown in fig. 3, a Remote UE sends a Relay request (Relay request) message, and if surrounding Remote UEs hear the message, the Remote UE sends a Relay response message to the Remote UE. The related art does not provide an effective control means for Relay control of Relay UEs in a UE Relay transmission scenario of a partial coverage area.

Disclosure of Invention

The invention provides a method and a device for controlling Relay User Equipment (UE) and the UE, which are used for at least solving the problem that an effective control means is not provided for Relay control of Relay UE in a UE Relay transmission scene of a partial coverage area in the related art.

According to an aspect of the present invention, there is provided a relay user equipment control method, including: user Equipment (UE) acquires relay information, wherein the relay information is sent by a network control node or is preset in the UE; and the UE performs relay initialization and/or relay configuration according to the relay information.

Optionally, the UE is a relay-capable UE, and the UE is interested to become a relay UE.

Optionally, the UE is in an idle state or a connected state.

Optionally, the network control node comprises at least one of: base station, proximity services Function ProSe Function.

Optionally, the UE acquiring the relay information includes: the UE receives relay system broadcast information and/or relay configuration information sent by the network control node, wherein the relay system broadcast information and/or the relay configuration information carry the relay information; or the UE receives non-access stratum information sent by the network control node, wherein the non-access stratum information carries the relay information; or the UE reads configuration information in a nonvolatile memory of the UE, wherein the configuration information comprises the relay information.

Optionally, before the UE receives the relay configuration information sent by the network control node, the method further includes: under the condition that the UE is in a connected state, the UE sends a relay configuration request to the network control node, wherein the relay configuration request comprises at least one of the following: a relay indication, a discovery transmission and/or reception resource request indication, a communication transmission and/or reception resource request indication, a relay discovery mode indication, a relay discovery cycle indication, a relay discovery resource duration indication.

Optionally, the UE receiving the relay system broadcast information and/or the relay configuration information sent by the network control node includes: under the condition that the UE is in an idle state, the UE receives relay system broadcast information sent by the network control node, wherein the relay system broadcast information carries the relay information; or under the condition that the UE is in a connected state, the UE receives relay system broadcast information and/or relay configuration information sent by the network control node, where the relay system broadcast information and the relay configuration information carry the relay information.

Optionally, the relay configuration information includes one of: relay configuration establishment information and relay configuration release information.

Optionally, the relay information includes at least one of: relay indication, relay condition information, PC5 link quality threshold, relay discovery mode information, relay discovery transmit resource/resource pool information, relay discovery receive resource pool information, relay communication transmit resource/resource pool information.

Optionally, the relay indication is used to indicate whether the network control node supports a relay function, where the relay indication displays an indication through a proprietary information element IE, or implicitly indicates in relay system broadcast information or relay configuration information.

Optionally, the relay condition information includes at least one of: a Uu link quality threshold, a UE residual capacity threshold and a UE moving speed threshold.

Optionally, the Uu link quality threshold includes: a minimum threshold and/or a maximum threshold of a first signal measurement result of the UE on a camping cell or a serving cell, wherein the first signal comprises at least one of: cell reference signals, channel state information.

Optionally, the Uu link quality threshold includes at least one of: a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, and a channel state information-reference signal received quality (CSI-RSRQ) threshold.

Optionally, the PC5 link quality threshold includes: a minimum threshold of a second signal measurement result sent by the UE to a remote UE, wherein the second signal includes at least one of: D2D demodulates the reference signal, channel state information.

Optionally, the PC5 link quality threshold includes at least one of: a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, and a channel state information-reference signal received quality (CSI-RSRQ) threshold.

Optionally, the performing, by the UE, the relay initialization and/or the relay configuration according to the relay information includes: the UE judges whether the current measurement result meets a relay condition, wherein the relay condition is determined according to the relay information; and under the condition that the current measurement result meets the relay condition, the UE performs the relay initialization and/or the relay configuration according to the relay information.

Optionally, the UE performing the relay initialization and/or the relay configuration according to the relay information includes at least one of:

the UE starts mode two relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery receiving resource pool information;

the UE starts a mode one relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery sending resource pool information;

when the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery mode information, the UE starts relay discovery according to a relay discovery mode indicated by the relay discovery mode information;

when the UE is in an idle state and the current measurement result of the UE meets the relay condition, the UE starts relay discovery according to relay discovery mode information sent by a non-access stratum or relay discovery resource pool monitoring indication or relay discovery information sending indication or the UE determines a relay discovery mode to start relay discovery by self;

the UE starts relay communication under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information;

when the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information only contains a relay indication or is empty, the UE enters a connected state and sends relay configuration request information to a serving cell;

and under the condition that the UE is in an idle state and the relay information contains relay condition information, if the current measurement result of the UE meets the relay condition, the UE enters a connected state and sends relay configuration request information to a serving cell.

Optionally, the UE performing the relay initialization according to the relay information includes at least one of:

when the UE is in a connected state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery mode information, the UE starts relay discovery according to a relay discovery mode indicated by the relay discovery mode information;

under the condition that the UE is in a connected state and the current measurement result of the UE meets the relay condition, the UE starts relay discovery according to relay discovery mode information indicated by a non-access stratum or relay discovery resource pool monitoring indication or relay discovery information sending indication or the UE determines a relay discovery mode to start relay discovery by itself;

and the UE starts relay communication under the conditions that the UE is in a connected state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information.

Optionally, the UE initiated mode-relay discovery comprises at least one of:

under the condition that the UE is in an idle state, the UE autonomously acquires relay discovery resources in a relay discovery transmission resource pool indicated by relay system broadcast information broadcast transmitted by a resident cell, and transmits relay notification information by using the relay discovery resources;

under the condition that the UE is in a connected state, the UE autonomously acquires relay discovery resources in a relay discovery transmission resource pool indicated by relay configuration information transmitted by a serving cell and transmits relay notification information by using the relay discovery resources;

and under the condition that the UE is in a connected state, the UE transmits relay notification information by using the relay discovery transmission resource indicated by the relay configuration information transmitted by the serving cell.

Optionally, the UE initiating mode two relay discovery comprises:

the UE monitors relay request information according to relay discovery receiving resource pool information indicated by relay system broadcast information broadcast transmitted by a resident cell or a service cell; or under the condition that the UE is in a connected state, the UE monitors relay request information according to relay discovery receiving resource pool information indicated by relay configuration information sent by a serving cell;

under the condition that the relay request information sent by remote UE is monitored and the UE is in an idle state, the UE judges whether a relay discovery sending resource pool is indicated in received relay system broadcast information sent by resident cell broadcast; if yes, the UE sends relay response information; if not, the UE enters a connection state and sends relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the condition that the relay request information and the signal measurement result sent by the remote UE meet the link quality threshold of the PC5 and the UE is in an idle state, the UE judges whether the relay discovery sending resource pool is indicated in the received relay system broadcast information sent by the resident cell broadcast; if yes, the UE sends relay response information; if not, the UE enters a connection state and sends relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the condition that the relay request information sent by the remote UE is monitored and the UE is in a connected state, the UE autonomously acquires relay discovery resources according to a relay discovery transmission resource pool indicated by the relay configuration information or transmits relay response information according to the relay discovery transmission resources indicated by the relay configuration information; or

And under the condition that the relay request information and the signal measurement result sent by the remote UE meet the link quality threshold of the PC5 and the UE is in a connected state, the UE autonomously acquires the relay discovery resources according to the relay discovery transmission resource pool indicated by the relay configuration information or sends relay response information according to the relay discovery transmission resources indicated by the relay configuration information.

Optionally, the UE initiating relay communication includes:

the UE monitors a relay communication receiving resource pool;

when the UE is in an idle state, relay system broadcast information received by the UE and sent by a resident cell broadcast carries relay communication sending resource pool information, and the UE receives a direct communication request sent by a remote UE, the UE enters a connection state to send relay configuration request information to a serving cell to request for relay communication sending resources, sends relay connection establishment information and forwards data for the remote UE; or

When the UE is in an idle state and receives a direct communication request sent by remote UE, the UE enters a connection state to send relay configuration request information to a serving cell to request for relay communication to send resources, send relay connection establishment information and forward data for the remote UE; or

And when the UE is in a connected state and receives a direct communication request sent by remote UE, the UE sends relay connection establishment information and forwards data for the remote UE according to relay communication sending resources indicated by relay configuration information sent by a serving cell.

Optionally, the performing, by the UE, relay initialization and/or relay configuration according to the relay information further includes: when the UE judges that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by the network control node: the UE uses the relay communication sending resource or the relay discovery sending resource to broadcast and send relay connection release information; or the UE sends a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information which does not meet the relay condition/relay deactivation to the network control node.

According to another aspect of the present invention, there is also provided a relay user equipment control apparatus, applied to a user equipment UE, including: an obtaining module, configured to obtain relay information, where the relay information is sent by a network control node, or the relay information is preset in the UE; and the processing module is used for carrying out relay initialization and/or relay configuration according to the relay information.

Optionally, the UE is in an idle state or a connected state.

Optionally, the obtaining module is configured to: receiving relay system broadcast information and/or relay configuration information sent by the network control node, wherein the relay system broadcast information and/or the relay configuration information carry the relay information; or receiving non-access stratum information sent by the network control node, wherein the non-access stratum information carries the relay information; or reading configuration information in a non-volatile memory of the UE, wherein the configuration information includes the relay information.

Optionally, the apparatus further comprises: a sending module, configured to send a relay configuration request to the network control node when the UE is in a connected state, where the relay configuration request includes at least one of: a relay indication, a discovery transmission and/or reception resource request indication, a communication transmission and/or reception resource request indication, a relay discovery mode indication, a relay discovery cycle indication, a relay discovery resource duration indication.

Optionally, the obtaining module is configured to: receiving relay system broadcast information sent by the network control node under the condition that the UE is in an idle state, wherein the relay system broadcast information carries the relay information; or receiving relay system broadcast information and/or relay configuration information sent by the network control node under the condition that the UE is in a connected state, wherein the relay system broadcast information and the relay configuration information carry the relay information.

Optionally, the relay condition information includes at least one of: an air interface Uu link quality threshold, a UE residual power threshold and a UE moving speed threshold.

Optionally, the processing module includes: a judging unit, configured to judge whether a current measurement result meets a relay condition, where the relay condition is determined according to the relay information; a first processing unit, configured to, when it is determined that the current measurement result satisfies the relay condition, perform, by the UE, the relay initialization and/or the relay configuration according to the relay information.

Optionally, the processing module is further configured to at least one of:

starting mode two relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery receiving resource pool information;

starting mode one relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay discovery sending resource pool information;

starting relay discovery according to a relay discovery mode indicated by relay discovery mode information under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition and the relay information comprises the relay discovery mode information;

when the UE is in an idle state and the current measurement result of the UE meets the relay condition, starting relay discovery according to relay discovery mode information sent by a non-access stratum or a relay discovery resource pool monitoring instruction or a relay discovery information sending instruction or the UE self-determines a relay discovery mode;

starting relay communication under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information;

entering a connected state and sending relay configuration request information to a serving cell under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition, and the relay information only contains a relay indication or is empty;

Optionally, the processing module is configured to at least one of:

starting relay discovery according to a relay discovery mode indicated by relay discovery mode information under the conditions that the UE is in a connected state, the current measurement result of the UE meets the relay condition and the relay information comprises the relay discovery mode information;

under the condition that the UE is in a connected state and the current measurement result of the UE meets the relay condition, starting relay discovery according to relay discovery mode information indicated by a non-access stratum or relay discovery resource pool monitoring indication or relay discovery information sending indication or the UE automatically determines a relay discovery mode;

and starting relay communication under the conditions that the UE is in a connected state, the current measurement result of the UE meets the relay condition, and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information.

Optionally, in a case that the processing module initiates a mode-relay discovery, the processing module is configured to at least one of:

under the condition that the UE is in an idle state, autonomously acquiring relay discovery resources in a relay discovery sending resource pool indicated by relay system broadcast information sent by a resident cell in a broadcast manner, and sending relay notification information by using the relay discovery resources;

under the condition that the UE is in a connected state, autonomously acquiring relay discovery resources in a relay discovery transmission resource pool indicated by relay configuration information transmitted by a serving cell, and transmitting relay notification information by using the relay discovery resources;

and under the condition that the UE is in a connected state, transmitting relay notification information by using a relay discovery transmission resource indicated by the relay configuration information transmitted by the serving cell.

Optionally, in a case that the processing module starts mode two relay discovery, the processing module is configured to:

monitoring relay request information according to relay discovery receiving resource pool information indicated by relay system broadcast information broadcast sent by a resident cell or a service cell; or under the condition that the UE is in a connected state, monitoring relay request information according to relay discovery receiving resource pool information indicated by relay configuration information sent by a serving cell;

under the condition that the relay request information sent by the remote UE is monitored and the UE is in an idle state, judging whether the received relay system broadcast information sent by the resident cell broadcast indicates a relay discovery sending resource pool or not; if yes, relay response information is sent; if not, enabling the UE to enter a connected state and sending relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the condition that the relay request information and the signal measurement result sent by the remote UE meet the link quality threshold of the PC5 and the UE is in an idle state, judging whether the received relay system broadcast information sent by the resident cell broadcast indicates a relay discovery sending resource pool or not; if yes, relay response information is sent; if not, enabling the UE to enter a connected state and sending relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the condition that the relay request information sent by the remote UE is monitored and the UE is in a connected state, the relay discovery sending resource is autonomously obtained according to a relay discovery sending resource pool indicated by the relay configuration information or the relay discovery sending resource indicated by the relay configuration information is sent, and relay response information is sent; or

And under the condition that the relay request information and the signal measurement result sent by the remote UE meet the link quality threshold of the PC5 and the UE is in a connected state, autonomously acquiring the relay discovery resources according to a relay discovery transmission resource pool indicated by the relay configuration information or sending relay response information according to the relay discovery transmission resources indicated by the relay configuration information.

Optionally, the processing module further comprises:

the monitoring unit is used for monitoring the relay communication receiving resource pool after relay discovery is carried out through the relay discovery mode I or the relay discovery mode II;

a second processing unit to:

when the UE is in an idle state, relay system broadcast information received by the UE and sent by a resident cell broadcast carries relay communication sending resource pool information, and the UE receives a direct communication request sent by remote UE, the UE enters a connection state to send relay configuration request information to a serving cell to request for relay communication sending resources, sends relay connection establishment information and forwards data for the remote UE; or

When the UE is in an idle state and the UE receives a direct communication request sent by remote UE, the UE enters a connection state to send relay configuration request information to a serving cell to request a relay communication sending resource, send relay connection establishment information and forward data for the remote UE; or

And under the condition that the UE is in a connected state and receives a direct communication request sent by the remote UE, sending relay connection establishment information and forwarding data for the remote UE according to relay communication sending resources indicated by relay configuration information sent by a serving cell.

Optionally, the processing module further comprises: a third processing unit, configured to, when the UE determines that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by the network control node: broadcasting and transmitting relay connection release information by using relay communication transmission resources or relay discovery transmission resources; or sending a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information which does not meet the relay condition/relay deactivation to the network control node.

According to another aspect of the present invention, there is also provided a user equipment, including: the relay user equipment control device described above.

According to the invention, the UE is adopted to acquire the relay information, wherein the relay information is sent by a network control node or is preset in the UE; the method that the UE carries out Relay initialization and/or Relay configuration according to the Relay information solves the problem that effective control means is not provided for Relay control of Relay UE in a Relay transmission scene of the UE in a partial coverage area in the related technology, and realizes Relay control of Relay UE in the Relay transmission scene of the UE in the partial coverage area.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic diagram of device-through system discovery/communication according to the related art;

fig. 2 is a schematic diagram of a device-through-system relay discovery mode one according to the related art;

fig. 3 is a schematic diagram of a device direct system relay discovery mode two according to the related art;

fig. 4 is a flowchart of a relay user equipment control method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a relay user equipment control device according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an alternative structure of a relay user equipment control device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an alternative structure of a relay user equipment control device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of an alternative structure of a relay user equipment control device according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an alternative structure of a relay user equipment control device according to an embodiment of the present invention;

fig. 10 is a flow chart of idle state UE initialization as a relay according to example 1 of the present invention;

fig. 11 is a flow chart of idle state UE initialization as a relay according to example 2 of the present invention;

fig. 12 is a flow chart of idle state UE initialization as a relay according to example 3 of the present invention;

fig. 13 is a flow chart of a connected UE initialisation to a relay according to example 4 of the present invention;

fig. 14 is a flow chart of a connected UE initializing as a relay according to example 5 of the present invention;

fig. 15 is a flowchart of a connected UE releasing relay function according to example 6 of the present invention;

fig. 16 is a flowchart of a connected UE releasing a relay function according to example 7 of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In this embodiment, a method for controlling a relay user equipment is provided, and fig. 4 is a flowchart of a method for controlling a relay user equipment according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes the following steps:

step S402, the UE acquires relay information, wherein the relay information is sent by a network control node or is preset in the UE;

step S404, the UE performs relay initialization and/or relay configuration according to the relay information.

Through the steps, the network control node sends the Relay information to the user equipment, so that the UE performs Relay initialization and/or Relay configuration according to the Relay information, the problem that an effective control means is not provided for Relay control of Relay UE in a UE Relay transmission scene of a partial coverage area in the related art is solved, and Relay control of the Relay UE in the UE Relay transmission scene of the partial coverage area is realized.

The UE in the embodiment of the present invention includes a UE with relay capability, and these UEs are also interested to be called relay UEs, so the method for controlling relay user equipment described in the embodiment of the present invention is applicable.

Optionally, the UE may be in an idle state or a connected state.

Optionally, the network control node comprises at least one of: base station, proximity services Function (ProSe Function). The base station may send the relay system broadcast to the idle UE through the camping cell, and may also send the relay system broadcast or the relay configuration information to the connected UE through the serving cell.

Optionally, in step S402, the UE may receive relay information from the same or different network control nodes in the idle state and the connected state, for example, the UE receives relay system broadcast information or relay configuration information sent by a serving cell of the base station, where the relay system broadcast information or the relay configuration information carries the relay information. I.e. the relay information may be carried in existing information sent to the UE.

Or, the UE receives non-access stratum information from a non-access stratum (e.g., ProSe function), where the non-access stratum information carries relay information;

or, if the relay information is pre-stored in the UE, the UE directly reads the configuration information in its non-volatile memory, where the configuration information includes the relay information.

Optionally, before step S402, in a case that the UE is in a connected state, the UE sends a relay configuration request to the network control node, where the relay configuration request includes at least one of: a relay indication, a discovery transmission and/or reception resource request indication, a communication transmission and/or reception resource request indication, a relay discovery mode indication, a relay discovery cycle indication, a relay discovery resource duration indication. In addition, the serving cell may also actively send relay configuration information to the UE.

Optionally, in step S402, the receiving, by the UE, the relay system broadcast information and/or the relay configuration information sent by the network control node includes: under the condition that the UE is in an idle state, the UE receives relay system broadcast information sent by a network control node, wherein the relay system broadcast information carries relay information; or under the condition that the UE is in a connected state, the UE receives relay system broadcast information and/or relay configuration information sent by a network control node, wherein the relay system broadcast information and the relay configuration information carry relay information.

Optionally, the relay configuration information includes one of: relay configuration establishment information and relay configuration release information. The establishment or release of the relay can be realized through the relay configuration information.

Optionally, the relay information includes at least one of: relay indication, relay condition information, PC5 link quality threshold, relay discovery mode information, relay discovery transmit resource/resource pool information, relay discovery receive resource pool information, relay communication transmit resource/resource pool information. Wherein, the PC5 link refers to a direct link between D2D UEs.

Optionally, the relay indication is used to indicate whether the network control node supports the relay function, wherein the relay indication is displayed through a proprietary Information Element (IE), or implicitly indicated in the relay system broadcast information or relay configuration information.

Optionally, the relay condition information includes at least one of: an air interface (Uu) link quality threshold, a UE remaining power threshold, and a UE moving speed threshold.

Optionally, the Uu link quality threshold includes: a minimum threshold of a first signal measurement result of the UE on the camping cell or the serving cell, wherein the first signal includes at least one of: cell reference signals, channel state information.

Optionally, the Uu link quality threshold comprises at least one of: a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, a channel state information-reference signal received quality (CSI-RSRQ) threshold.

Optionally, the PC5 link quality threshold includes: the UE measures a lowest threshold of a second signal sent by the remote UE, wherein the second signal includes at least one of: D2D demodulates the reference signal, channel state information.

Optionally, the PC5 link quality threshold includes at least one of: a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, a channel state information-reference signal received quality (CSI-RSRQ) threshold.

Optionally, the relay discovery transmission resource pool information or the relay discovery reception resource pool information or the relay communication transmission resource pool information or the relay communication reception resource pool information includes: information for relay independently, or information multiplexed with D2D discovery transmission resource pool information, D2D discovery reception resource pool information, D2D communication transmission resource pool information, or D2D communication reception resource pool information. That is, the resource pool information may be independent information or may be transmitted by multiplexing existing communication resource pool information.

Optionally, in step S404, the UE determines whether the current measurement result satisfies the relay condition; and if the judgment condition is yes, the UE performs relay initialization and/or relay configuration according to the relay information. The relay condition may be notified to the UE through the relay information, or may be preset by the UE.

For example, before the UE determines whether the current measurement result meets the relay condition, the UE receives relay system broadcast information or relay configuration information sent by the residential cell, where the relay system broadcast information or the relay configuration information carries relay condition information; and/or the UE receiving the relay information sent by the network control node comprises: the UE receives relay condition information sent by the ProSe Function; and/or the UE reads preset relay condition information in the UE; wherein the relay condition is determined according to at least one of the relay condition information.

Optionally, the UE performing relay initialization and/or relay configuration according to the relay information includes at least one of:

the UE starts a mode two relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition and the relay information comprises relay discovery receiving resource pool information;

the method comprises the steps that UE starts a mode one relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions, and relay information comprises relay discovery sending resource pool information;

under the conditions that the UE is in an idle state, the current measurement result of the UE meets the relay condition and the relay information comprises relay discovery mode information, the UE starts relay discovery according to a relay discovery mode indicated by the relay discovery mode information;

when the UE is in an idle state and the current measurement result of the UE meets the relay condition, the UE starts relay discovery according to relay discovery mode information sent by a non-access stratum or a relay discovery resource pool monitoring instruction or a relay discovery information sending instruction or the UE determines a relay discovery mode by self;

the method comprises the steps that when UE is in an idle state, the current measurement result of the UE meets relay conditions, and relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information, the UE starts relay communication;

Optionally, the UE performing relay initialization according to the relay information includes at least one of:

under the conditions that the UE is in a connected state, the current measurement result of the UE meets relay conditions and the relay information comprises relay discovery mode information, the UE starts relay discovery according to a relay discovery mode indicated by the relay discovery mode information;

under the condition that the UE is in a connected state and the current measurement result of the UE meets the relay condition, the UE starts relay discovery according to relay discovery mode information indicated by a non-access stratum or a relay discovery resource pool monitoring indication or a relay discovery information sending indication or the UE determines a relay discovery mode by self;

and under the conditions that the UE is in a connected state, the current measurement result of the UE meets the relay condition and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information, the UE starts relay communication.

Optionally, the UE performing relay discovery in the relay discovery mode one includes at least one of:

and under the condition that the UE is in a connected state, the UE transmits the relay notification information by using the relay discovery transmission resource indicated by the relay configuration information transmitted by the serving cell.

Optionally, the UE performing relay discovery in the relay discovery mode two includes:

the UE monitors relay request information according to relay discovery receiving resource pool information indicated by relay system broadcast information broadcast sent by a resident cell or a service cell; or under the condition that the UE is in a connected state, the UE monitors relay request information according to relay discovery receiving resource pool information indicated by relay configuration information sent by a serving cell;

under the condition that relay request information sent by remote UE is monitored and the UE is in an idle state, the UE judges whether a relay discovery sending resource pool is indicated in received relay system broadcast information sent by resident cell broadcast; if so, the UE sends relay response information; if not, the UE enters a connection state and sends relay configuration request information to the serving cell to request a relay to discover transmission resources so as to send relay response information; or

Under the conditions that relay request information sent by remote UE and a signal measurement result meet a PC5 link quality threshold are monitored, and the UE is in an idle state, the UE judges whether relay discovery sending resource pool is indicated in received relay system broadcast information sent by resident cell broadcast; if so, the UE sends relay response information; if not, the UE enters a connection state and sends relay configuration request information to the serving cell to request a relay to discover transmission resources so as to send relay response information; or

Under the condition that relay request information sent by remote UE is monitored and the UE is in a connected state, the UE autonomously acquires relay discovery resources according to a relay discovery sending resource pool indicated by relay configuration information or sends relay response information according to the relay discovery sending resources indicated by the relay configuration information; or

And under the conditions that the relay request information sent by the remote UE is monitored, the signal measurement result meets the link quality threshold of the PC5 and the UE is in a connected state, the UE autonomously acquires the relay discovery resources according to the relay discovery transmission resource pool indicated by the relay configuration information or transmits relay response information according to the relay discovery transmission resources indicated by the relay configuration information.

Optionally, after the UE performs relay discovery in the relay discovery mode one or the relay discovery mode two, the performing, by the UE, relay communication according to the relay information includes:

the UE monitors a relay communication receiving resource pool;

When the UE is in an idle state and receives a direct communication request sent by the remote UE, the UE enters a connection state to send relay configuration request information to a serving cell to request a relay communication sending resource, send relay connection establishment information and forward data for the remote UE; or

And when the UE is in a connected state and receives a direct communication request sent by the remote UE, the UE sends relay connection establishment information and forwards data for the remote UE according to relay communication sending resources indicated by relay configuration information sent by a serving cell.

Optionally, the performing, by the UE, relay initialization and/or relay configuration according to the relay information further includes: when the UE judges that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by a network control node: the UE uses the relay communication transmission resource or the relay discovery transmission resource to broadcast and transmit relay connection release information; or the UE sends a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information that the relay condition/relay deactivation is not met to the network control node.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

In this embodiment, a relay user equipment control device is further provided, which is applied to a UE with a medium-level capability, and is used to implement the foregoing embodiments and preferred embodiments, which have already been described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 5 is a block diagram of a relay user equipment control apparatus according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes: an obtaining module 52 and a processing module 54, where the obtaining module 52 is configured to obtain relay information, where the relay information is sent by a network control node, or the relay information is preset in a UE; and a processing module 54, coupled to the obtaining module 52, for performing relay initialization and/or relay configuration according to the relay information.

Optionally, the UE is in an idle state or a connected state.

Optionally, the network control node comprises at least one of: base station, proximity services Function (ProSe Function).

Optionally, the obtaining module 52 is configured to: receiving relay system broadcast information and/or relay configuration information sent by a network control node, wherein the relay system broadcast information and/or the relay configuration information carry relay information; or receiving non-access stratum information sent by a network control node, wherein the non-access stratum information carries relay information; or reading configuration information in a non-volatile memory of the UE, wherein the configuration information comprises relay information.

Optionally, the obtaining module 52 is configured to: under the condition that the UE is in an idle state, receiving relay system broadcast information sent by a network control node, wherein the relay system broadcast information carries relay information; or receiving relay system broadcast information and/or relay configuration information sent by a network control node under the condition that the UE is in a connected state, wherein the relay system broadcast information and the relay configuration information carry relay information.

Optionally, the relay indication is used to indicate whether the network control node supports the relay function, where the relay indication displays the indication through a proprietary information element IE, or implicitly indicates in the relay system broadcast information or relay configuration information.

Optionally, the relay condition information includes at least one of: an air interface (Uu) link quality threshold, a UE remaining power threshold, a UE moving speed threshold, and a PC5 link quality threshold.

Optionally, the Uu link quality threshold includes: a minimum threshold and/or a maximum threshold of a first signal measurement result of the UE on the camping cell or the serving cell, wherein the first signal includes at least one of the following: cell reference signals, channel state information.

Optionally, the Uu link quality threshold comprises at least one of: a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, and a channel state information-reference signal received quality (CSI-RSRQ) threshold.

Optionally, the relay discovery transmission resource pool information or the relay discovery reception resource pool information or the relay communication transmission resource pool information or the relay communication reception resource pool information includes: information for relay independently, or information multiplexed with D2D discovery transmission resource pool information, D2D discovery reception resource pool information, D2D communication transmission resource pool information, or D2D communication reception resource pool information.

Fig. 6 is a schematic diagram of an optional structure of the relay user equipment control device according to the embodiment of the present invention, as shown in fig. 6, optionally, the processing module 54 includes: a judging unit 542, configured to judge whether a current measurement result satisfies a relay condition; a first processing unit 544 coupled to the judging unit 542, configured to, if the judging condition is yes, perform relay initialization and/or relay configuration by the UE according to the relay information.

Optionally, the processing module 54 is further configured to at least one of:

starting mode two relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions and relay information comprises relay discovery receiving resource pool information;

starting mode one relay discovery under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions and relay information comprises relay discovery sending resource pool information;

starting relay discovery according to a relay discovery mode indicated by relay discovery mode information under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions and the relay information comprises the relay discovery mode information;

when the UE is in an idle state and the current measurement result of the UE meets the relay condition, starting relay discovery according to relay discovery mode information sent by a non-access stratum or a relay discovery resource pool monitoring instruction or a relay discovery information sending instruction or the UE automatically decides a relay discovery mode;

starting relay communication under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions, and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information;

entering a connection state and sending relay configuration request information to a serving cell under the conditions that the UE is in an idle state, the current measurement result of the UE meets relay conditions, and relay information only contains relay indication or is empty;

Optionally, the processing module 54 is configured to at least one of:

under the conditions that the UE is in a connected state, the current measurement result of the UE meets relay conditions and the relay information comprises relay discovery mode information, starting relay discovery according to a relay discovery mode indicated by the relay discovery mode information;

under the condition that the UE is in a connected state and the current measurement result of the UE meets the relay condition, starting relay discovery according to relay discovery mode information indicated by a non-access stratum or a relay discovery resource pool monitoring indication or a relay discovery information sending indication or the UE automatically decides a relay discovery mode;

and starting relay communication under the conditions that the UE is in a connected state, the current measurement result of the UE meets the relay condition and the relay information comprises relay communication sending resource pool information and/or relay communication receiving resource pool information.

Optionally, in the case that the processing module 54 performs relay discovery in the relay discovery mode one, the processing module 54 is configured to at least one of:

and under the condition that the UE is in a connected state, the relay notification information is transmitted by using the relay discovery transmission resource indicated by the relay configuration information transmitted by the serving cell.

Optionally, in the case that the processing module 54 performs relay discovery in the relay discovery mode two, the processing module 54 is configured to:

under the condition that relay request information sent by remote UE is monitored and the UE is in an idle state, judging whether a relay discovery sending resource pool is indicated in received relay system broadcast information sent by resident cell broadcast; if yes, relay response information is sent; if not, enabling the UE to enter a connection state and sending relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the conditions that relay request information sent by remote UE and a signal measurement result meet a PC5 link quality threshold are monitored, and the UE is in an idle state, whether a relay discovery sending resource pool is indicated in received relay system broadcast information sent by resident cell broadcast is judged; if yes, relay response information is sent; if not, enabling the UE to enter a connection state and sending relay configuration request information to a serving cell to request a relay to discover sending resources so as to send relay response information; or

Under the condition that relay request information sent by remote UE is monitored and the UE is in a connected state, autonomously acquiring relay discovery resources according to a relay discovery sending resource pool indicated by relay configuration information or sending relay response information according to the relay discovery sending resources indicated by the relay configuration information; or

And under the conditions that the relay request information sent by the remote UE is monitored, the signal measurement result meets the link quality threshold of the PC5 and the UE is in a connected state, autonomously acquiring the relay discovery resources according to the relay discovery sending resource pool indicated by the relay configuration information or sending the relay discovery sending resources according to the relay configuration information, and sending relay response information.

Fig. 7 is a schematic diagram of an optional structure of a relay user equipment control device according to an embodiment of the present invention, as shown in fig. 7, optionally, the processing module 54 further includes:

a monitoring unit 546, configured to monitor the relay communication reception resource pool after performing relay discovery in the relay discovery mode one or the relay discovery mode two;

a second processing unit 548, coupled to the listening unit 546, configured to:

When the UE is in an idle state and the UE receives a direct communication request sent by the remote UE, the UE enters a connected state to send relay configuration request information to a serving cell to request a relay communication sending resource, send relay connection establishment information and forward data for the remote UE; or

And when the UE is in a connected state and the UE receives a direct communication request sent by the remote UE, sending relay connection establishment information and forwarding data for the remote UE according to relay communication sending resources indicated by relay configuration information sent by a serving cell.

Fig. 8 is a schematic diagram of an optional structure of a relay user equipment control device according to an embodiment of the present invention, as shown in fig. 8, optionally, the device further includes: a sending module 82, coupled to the obtaining module 52, configured to send a relay discovery resource configuration request to a network control node when the UE is in a connected state, where the network control node is a serving cell of the base station.

Fig. 9 is a schematic diagram of an optional structure of a relay user equipment control apparatus according to an embodiment of the present invention, and as shown in fig. 9, based on the relay user equipment control apparatus shown in fig. 6, optionally, the processing module 54 further includes: the third processing unit 545, coupled to the determining unit 542, is configured to, when the UE determines that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by the network control node: broadcasting and transmitting relay connection release information by using relay communication transmission resources or relay discovery transmission resources; or sending a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information which does not meet the relay condition/relay deactivation to the network control node.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.

In this embodiment, a user equipment is further provided, which includes the relay user equipment control device.

The embodiment of the present invention also provides software for executing the technical solutions described in the above embodiments and preferred embodiments.

The embodiment of the invention also provides a storage medium. In the present embodiment, the storage medium described above may be configured to store program code for performing the steps of:

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

In order that the description of the embodiments of the invention will be more apparent, reference is now made to the preferred embodiments for illustration.

The preferred embodiment of the invention provides a network control method and a network control device for a device-through system, which are used for solving the problems of relay initialization and release from UE to a network relay in the device-through system.

In order to solve the above technical problem, the present invention provides a method for initializing a relay of a device-through system, including:

UE receives relay information sent by a network control node;

the UE performs relay initialization and/or configuration according to the relay information;

through the steps, the network can control whether the UE with the relay capability in the idle state and the connected state is initialized to transmit data to the remote UE from the UE to the network relay or not through proper relay information, and can also control when the relay function is released from the UE to the network relay, so that the remote UE can select and reselect the relay under the control of the network, and the smooth transmission from the remote UE to the network is ensured.

Examples of methods for initializing a relay-capable UE to a UE-to-network relay and releasing the relay function and related signaling procedures are given below by examples 1 to 7.

Example 1

Officer a, B uses D2D enabled public safety UE1, UE 2. Officer a, B are both subscribed to public safety services. At the rescue site, UE1 is in a state of network coverage, while UE2 is in no network coverage.

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. Assuming that the UE1 is in idle state at this time, the UE1 receives a system broadcast message sent by the camped cell, as shown in fig. 10. The system broadcast message is assumed to contain relay condition information, a relay discovery mode, a relay discovery transmitting resource pool, a relay discovery receiving resource pool, a relay communication receiving resource pool and a relay communication transmitting resource pool. The relay condition includes a Uu link quality threshold, a UE remaining power threshold, a UE moving speed threshold, and a PC5 link quality threshold. The UE1 detects the self condition, if the Uu link measurement result of the resident cell is larger than the Uu link quality threshold, the UE1 residual capacity is larger than the UE residual capacity threshold, the UE1 has low moving speed, and the threshold requirement that the UE moving speed is low is met, so the UE1 initializes the UE to the network relay and starts to start the relay discovery. Assuming that the relay discovery mode indication relay discovery mode two is included in the system broadcast message, the UE1 listens for the relay request information using the relay discovery reception resource pool included in the relay system broadcast information broadcast by the camped cell.

Assuming that the UE2 in the no network coverage state wishes to be able to connect to the network, the UE2 may send a relay request message. Assuming that the relay UE1 hears the relay request information generated by the UE2 and the signal measurement result is greater than the link quality threshold of the PC5 sent by the system broadcast message, the idle UE1 acquires the relay response information sent by the discovery resource according to the relay discovery sending resource pool included in the system broadcast information.

Assuming that the remote UE2 overheard the relay response message occurring by the relay UE1 and selected the relay UE1 to access the network, the remote UE2 sends a connection establishment request message to the relay UE1 requesting the access relay UE1 to forward data to the network for it.

The relay UE1 starts monitoring the relay communication reception resource pool according to the relay communication reception resource pool information included in the system broadcast information while performing relay discovery. If a connection establishment request sent by the remote UE is received, the idle UE1 completes the PC5 connection establishment with the remote UE 1. Before UE1 forwards packets to the network for remote UE2, idle UE1 needs to enter connected state before sending packets for UE2 to the base station over Uu port. It should be noted that if the relay UE1 already needs to have information interaction with the network at the Uu port during the PC5 connection establishment procedure, the cellular connection establishment procedure may be performed before the PC5 connection establishment is completed.

Example 2

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. Assuming that the UE1 is in idle state at this time, the UE1 receives a system broadcast message sent by the camped cell, as shown in fig. 11. Suppose that the system broadcast message includes relay condition information, a relay finds a reception resource pool, and a relay communication reception resource pool. The relay condition includes Uu link quality threshold and PC5 link quality threshold. The UE1 detects its own condition, and if the Uu link RSRP measurement result of the camped cell is greater than the Uu link quality threshold, the UE1 initializes the UE-to-network relay and starts the start mode two relay discovery mode, that is, the UE1 starts to monitor the relay request information using the relay discovery reception resource pool included in the relay system broadcast information broadcast by the camped cell.

Assuming that the UE2 in the no network coverage state wishes to be able to connect to the network, the UE2 may send a relay request message. The relay UE1 hears the relay request information generated by the UE2 and the signal measurement result is greater than the PC5 link quality threshold sent by the system broadcast message, then the idle UE1 enters the connected state to request the relay discovery sending resource to the base station for sending the relay response information. After acquiring the relay discovery resource, the relay UE1 sends relay response information.

The relay UE1 starts monitoring the relay communication reception resource pool according to the relay communication reception resource pool information included in the system broadcast information while performing relay discovery. If the connection establishment request transmitted by the remote UE2 is received, the UE1 requests the relay communication transmission resource to transmit relay connection establishment information to the base station to complete PC5 connection establishment with the remote UE 1. The relay UE1 may then forward the data packet to the network for the remote UE 2.

Example 3

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. Assuming that the UE1 is in idle state at this time, the UE1 receives a system broadcast message sent by the camped cell, as shown in fig. 12. Suppose that the system broadcast message includes a relay discovery mode, a relay discovery transmission resource pool, a relay discovery reception resource pool, and a relay communication reception resource pool. The UICC of the UE1 configures a relay condition related threshold, such as a Uu link quality threshold, a UE remaining power threshold, and a UE moving speed threshold. The UE1 detects the self condition, if the Uu link measurement result of the resident cell is larger than the Uu link quality threshold, the UE1 residual capacity is larger than the UE residual capacity threshold, the UE1 has low moving speed, and the threshold requirement that the UE moving speed is low is met, so the UE1 initializes the UE to the network relay and starts to start the relay discovery. Assuming that the relay discovery mode included in the system broadcast message indicates relay discovery mode one, the UE1 acquires relay discovery resource transmission relay notification information using a relay discovery transmission resource pool included in relay system broadcast information broadcast-transmitted by the camped cell.

Assuming that the UE2 in the no network coverage state wishes to be able to connect to the network, the UE2 may first listen to whether there are relay announcement messages sent by relay UEs in the surroundings. Assuming that the remote UE2 overheard the relay announcement message occurring by the relay UE1 and selected the relay UE1 to access the network, the remote UE2 sends connection establishment request information to the relay UE1 requesting the access relay UE1 to forward data to the network for it.

The relay UE1 starts monitoring the relay communication reception resource pool according to the relay communication reception resource pool information included in the system broadcast information while performing relay discovery. If receiving the connection establishment request sent by the remote UE, the idle UE1 needs to enter the connected state, acquire relay communication transmission resources from the base station, and then send a PC5 connection establishment message to the remote UE 2. After completing the PC5 connection setup, the relay UE1 may send the data packet of the UE2 to the base station through the Uu port.

Example 4

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. Assuming that the UE1 is in idle state at this time, the UE1 receives a system broadcast message sent by the camped cell, as shown in fig. 13. It is assumed that the system broadcast message only contains the system supporting the relay, but does not contain the relay resource related information. Therefore, the UE1 in idle state needs to enter connected state, send relay configuration request to the base station, indicate that the UE1 is interested to become UE-to-network relay, and after receiving the message, the base station can perform relay authorization authentication on the UE1, and if the authentication is passed, send relay configuration information to the UE1, which may include relay discovery mode and relay condition.

After receiving the relay configuration information issued by the base station, the relay UE1 first determines whether a relay condition correlation threshold included in the configuration information is satisfied. The UE1 detects the self condition, if the Uu link measurement result of the serving cell is larger than the Uu link quality threshold, the UE1 remaining capacity is larger than the UE remaining capacity threshold, the UE1 moving speed is low, and the threshold requirement that the UE moving speed is low is met, the UE1 initializes the UE to the network relay, and starts to start relay discovery. Assuming that the relay discovery mode indication contained in the relay configuration information is relay discovery mode one, the UE1 needs to generate relay advertisement information. To send this message, the UE1 needs to send a relay send indication (further, it can also distinguish between a relay discovery indication and/or a relay communication indication) to the base station, requesting the base station to send a relay discovery and/or a communication resource configuration. And acquiring relay discovery resource sending relay notification information by using a relay discovery sending resource pool contained in the relay system broadcast information broadcast by the resident cell.

After receiving the RRC connection reconfiguration message including the relay discovery transmission resource and/or the communication transmission resource issued by the base station, the UE1 transmits relay notification information using the allocated relay discovery transmission resource.

The relay UE1 starts to listen to the relay communication reception resource pool according to the relay communication reception resource pool information included in the RRC connection reconfiguration message. If a connection establishment request sent by the remote UE2 is received, the PC5 connection establishment is completed with the remote UE2, and then the relay UE1 may send the data packet of the UE2 to the base station through the Uu port.

Example 5

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. Assuming that the UE1 is in idle state at this time, the UE1 receives a system broadcast message sent by the camped cell, as shown in fig. 14. It is assumed that the system broadcast message only includes the relay condition information but does not include the relay resource related information. The UE1 in idle state firstly judges whether relay conditions are met, the UE1 detects the self condition, if the Uu link measurement result of the serving cell is larger than the minimum Uu link quality threshold and smaller than the maximum Uu link quality threshold, the UE1 residual capacity is larger than the UE residual capacity threshold, the UE1 has low moving speed, and the threshold requirement that the UE moving speed is low is met, the UE1 enters connected state, and sends a relay configuration request to the base station. The relay configuration request may include at least one of: the method comprises the steps of relay indication, discovery sending and/or receiving resource request indication, communication sending and/or receiving resource request indication relay discovery mode indication, relay discovery period indication and relay discovery resource duration indication. After receiving the message, the base station may perform relay authorization authentication on the UE1, and if the authentication is successful, transmit relay configuration information to the UE1, which may include relay discovery and/or communication resource configuration.

After receiving the relay configuration information sent by the base station, the relay UE1 initializes the UE to network relay and starts to start relay discovery. Assuming that the NAS layer of the UE1 initiates relay discovery mode two, the UE1 needs to listen to the relay request information sent by the remote UE. To listen for the message, the UE1 begins listening for relay request information using the relay discovery receive resource pool contained in the relay configuration information.

Assuming that the UE2 in the no network coverage state wishes to be able to connect to the network, the UE2 may send a relay request message. The relay UE1 hears the relay request information generated by the UE2 and the signal measurement result is greater than the link quality threshold of the PC5 included in the relay configuration information, then the relay UE1 sends the relay response information according to the discovery resource information included in the relay configuration information.

Assuming that the remote UE2 overhears the relay response message generated by the relay UE1 and selects the relay UE1 to access the network, the remote UE2 establishes a PC5 connection with the relay UE 1. The relay UE1 may then forward the data packet to the network for the remote UE 2.

Example 6

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. It is assumed that the UE1 is performing the relay function, and receives the relay configuration information indication release sent by the base station, as shown in fig. 15. After receiving the relay configuration release information, the UE1 may transmit the PC5 connection release information by transmitting a resource broadcast through relay communication.

After receiving the PC5 connection release information sent by the UE1, the remote UE2 accessing the relay UE1 starts to perform relay reselection, and selects an appropriate relay to reestablish the PC5 connection.

Example 7

The UE1 with network coverage has UE-to-network relay capability and is interested in becoming a relay node to provide relay service to the UE without coverage. The UE1 receives a system broadcast message sent by the camped cell that includes a relay condition threshold, as shown in fig. 16. The relay UE1 determines that the threshold associated with the relay condition contained in the configuration information is met, and therefore the relay UE1 starts to perform the relay function. When the subsequent UE1 detects that the Uu port measurement result does not satisfy the Uu link quality threshold requirement, the UE1 may send, to the remote UE that has accessed, a data packet containing a PC5 connection release indication MACCE through the relay communication transmission resource, and/or send, through a relay discovery transmission resource, relay discovery announcement information carrying the relay release indication in a broadcast manner. In addition, if the UE1 is in the relay function started after the RRC connected state, the UE1 may also transmit information that the relay condition/relay deactivation is not satisfied to the serving base station.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A relay user equipment control method, comprising:

user Equipment (UE) acquires relay information, wherein the relay information is sent by a network control node or is preset in the UE;

the UE performs relay initialization and/or relay configuration according to the relay information;

wherein the relay information includes at least one of:

relay indication, relay condition information, a PC5 link quality threshold, relay discovery mode information, relay discovery transmitting resource/resource pool information, relay discovery receiving resource pool information, relay communication transmitting resource/resource pool information;

wherein the performing, by the UE, the relay initialization and/or the relay configuration according to the relay information includes:

the UE judges whether the current measurement result meets a relay condition, wherein the relay condition is determined according to the relay information;

under the condition that the current measurement result meets the relay condition, the UE performs the relay initialization and/or the relay configuration according to the relay information;

wherein the UE performing the relay initialization and/or the relay configuration according to the relay information comprises at least one of:

2. The method of claim 1,

the UE is a relay-capable UE and is interested in becoming a relay UE.

3. The method of claim 1, wherein the UE is in an idle state or a connected state.

4. The method of claim 1, wherein the network control node comprises at least one of:

base station, proximity services Function ProSe Function.

5. The method of claim 1, wherein the UE acquiring the relay information comprises:

the UE receives relay system broadcast information and/or relay configuration information sent by the network control node, wherein the relay system broadcast information and/or the relay configuration information carry the relay information; or

The UE receives non-access stratum information sent by the network control node, wherein the non-access stratum information carries the relay information; or

The UE reads configuration information in a non-volatile memory of the UE, wherein the configuration information comprises the relay information.

6. The method of claim 5, wherein before the UE receives the relay configuration information sent by the network control node, the method further comprises:

under the condition that the UE is in a connected state, the UE sends a relay configuration request to the network control node, wherein the relay configuration request comprises at least one of the following: a relay indication, a discovery transmission and/or reception resource request indication, a communication transmission and/or reception resource request indication, a relay discovery mode indication, a relay discovery cycle indication, a relay discovery resource duration indication.

7. The method of claim 5, wherein the UE receiving the relay system broadcast information and/or the relay configuration information sent by the network control node comprises:

under the condition that the UE is in an idle state, the UE receives relay system broadcast information sent by the network control node, wherein the relay system broadcast information carries the relay information; or

And under the condition that the UE is in a connected state, the UE receives relay system broadcast information and/or relay configuration information sent by the network control node, wherein the relay system broadcast information and the relay configuration information carry the relay information.

8. The method of claim 5, wherein the relay configuration information comprises one of:

relay configuration establishment information and relay configuration release information.

9. The method of claim 1,

the relay indication is used for indicating whether the network control node supports a relay function, wherein the relay indication displays an indication through a proprietary information element IE, or implicitly indicates in relay system broadcast information or relay configuration information.

10. The method of claim 1, wherein the relay condition information comprises at least one of: a Uu link quality threshold, a UE residual capacity threshold and a UE moving speed threshold.

11. The method of claim 10, wherein the Uu link quality threshold comprises:

a minimum threshold and/or a maximum threshold of a first signal measurement result of the UE on a camping cell or a serving cell, wherein the first signal comprises at least one of: cell reference signals, channel state information.

12. The method of claim 11, wherein the Uu link quality threshold comprises at least one of:

reference Signal Received Power (RSRP) threshold, Reference Signal Received Quality (RSRQ) threshold, channel state information-

A reference signal received power CSI-RSRP threshold, a channel state information-reference signal received quality CSI-RSRQ threshold.

13. The method of claim 1, wherein the PC5 link quality threshold comprises:

a minimum threshold of a second signal measurement result sent by the UE to a remote UE, wherein the second signal includes at least one of: D2D demodulates the reference signal, channel state information.

14. The method of claim 13, wherein the PC5 link quality threshold comprises at least one of:

15. The method of claim 1, wherein the UE performing the relay initialization according to the relay information comprises at least one of:

16. The method according to claim 1 or 15, wherein the UE initiated mode-relay discovery comprises at least one of:

17. The method according to claim 1 or 15, wherein the UE initiating mode two relay discovery comprises:

18. The method of claim 1 or 15, wherein the UE initiating relay communication comprises:

the UE monitors a relay communication receiving resource pool;

19. The method of claim 1, wherein the relay initialization and/or relay configuration performed by the UE according to the relay information further comprises:

when the UE judges that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by the network control node: the UE uses the relay communication sending resource or the relay discovery sending resource to broadcast and send relay connection release information; or the UE sends a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information which does not meet the relay condition/relay deactivation to the network control node.

20. A relay user equipment control device is applied to User Equipment (UE), and is characterized by comprising:

an obtaining module, configured to obtain relay information, where the relay information is sent by a network control node, or the relay information is preset in the UE;

the processing module is used for carrying out relay initialization and/or relay configuration according to the relay information;

wherein the relay information includes at least one of:

wherein the processing module comprises:

a judging unit, configured to judge whether a current measurement result meets a relay condition, where the relay condition is determined according to the relay information;

a first processing unit, configured to, when it is determined that the current measurement result satisfies the relay condition, perform, by the UE, the relay initialization and/or the relay configuration according to the relay information;

wherein the processing module is further configured to at least one of:

21. The apparatus of claim 20,

the UE is a relay-capable UE and is interested in becoming a relay UE.

22. The apparatus of claim 20, wherein the UE is in an idle state or a connected state.

23. The apparatus of claim 20, wherein the network control node comprises at least one of:

base station, proximity services Function ProSe Function.

24. The apparatus of claim 20, wherein the obtaining module is configured to:

receiving relay system broadcast information and/or relay configuration information sent by the network control node, wherein the relay system broadcast information and/or the relay configuration information carry the relay information; or

Receiving non-access stratum information sent by the network control node, wherein the non-access stratum information carries the relay information; or

Reading configuration information in a non-volatile memory of the UE, wherein the configuration information comprises the relay information.

25. The apparatus of claim 24, further comprising:

a sending module, configured to send a relay configuration request to the network control node when the UE is in a connected state, where the relay configuration request includes at least one of: a relay indication, a discovery transmission and/or reception resource request indication, a communication transmission and/or reception resource request indication, a relay discovery mode indication, a relay discovery cycle indication, a relay discovery resource duration indication.

26. The apparatus of claim 24, wherein the obtaining module is configured to:

receiving relay system broadcast information sent by the network control node under the condition that the UE is in an idle state, wherein the relay system broadcast information carries the relay information; or

And receiving relay system broadcast information and/or relay configuration information sent by the network control node under the condition that the UE is in a connected state, wherein the relay system broadcast information and the relay configuration information carry the relay information.

27. The apparatus of claim 26, wherein the relay configuration information comprises one of:

28. The apparatus of claim 20,

29. The apparatus of claim 20, wherein the relay condition information comprises at least one of:

an air interface Uu link quality threshold, a UE residual power threshold and a UE moving speed threshold.

30. The apparatus of claim 29, wherein the Uu link quality threshold comprises:

31. The apparatus of claim 30, wherein the Uu link quality threshold comprises at least one of:

a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, a channel state information-reference signal received power (CSI-RSRP) threshold, and a channel state information-reference signal received quality (CSI-RSRQ) threshold.

32. The apparatus of claim 20, wherein the PC5 link quality threshold comprises:

33. The apparatus as claimed in claim 32, wherein said PC5 link quality threshold comprises at least one of:

34. The apparatus of claim 20, wherein the processing module is configured to at least one of:

35. The apparatus according to claim 20 or 34, wherein in case the processing module initiates mode-relay discovery, the processing module is configured to at least one of:

36. The apparatus of claim 20 or 34, wherein in case the processing module initiates mode two relay discovery, the processing module is configured to:

37. The apparatus of claim 20 or 34, wherein the processing module further comprises:

a second processing unit to:

38. The apparatus of claim 20, wherein the processing module further comprises:

a third processing unit, configured to, when the UE determines that the current measurement result does not satisfy the relay condition or the UE receives relay configuration release information sent by the network control node: broadcasting and transmitting relay connection release information by using relay communication transmission resources or relay discovery transmission resources; or sending a data packet containing a Media Access Control (MAC) control unit (CE) for indicating relay release information to the remote UE; or the UE sends information which does not meet the relay condition/relay deactivation to the network control node.

39. A user device, comprising: the relay user equipment control device of any of claims 20 to 38.