CN111163437B

CN111163437B - Communication monitoring method and communication equipment

Info

Publication number: CN111163437B
Application number: CN201811324559.4A
Authority: CN
Inventors: 马腾; 郑方政; 赵锐; 林琳
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2022-07-01
Anticipated expiration: 2038-11-08
Also published as: CN111163437A

Abstract

The invention provides a communication monitoring method and communication equipment, which solve the problem that a base station cannot monitor and acquire sidelink communication conditions in real time. The communication monitoring method comprises the following steps: and monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource. The embodiment of the invention monitors the SL communication behavior of the terminal equipment in real time on the side-path SL communication resources, so that the network equipment can conveniently carry out operations such as pre-configuration of resources, reallocation of resources, switching of scheduling modes or reuse of allocated resources and the like on the terminal equipment based on the monitored condition, the utilization efficiency of V2X resources (pools) is improved, resource selection conflicts are reduced, the reliability and flexibility of a V2X communication system are improved, and the communication time delay of the system is reduced.

Description

Communication monitoring method and communication equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication monitoring method and a communication device.

Background

In a current intelligent networking automobile technology (V2X) Communication system based on Long Term Evolution (LTE) technology, a base station can only communicate with User Equipment (UE) through an interface between the UE and an air interface (UMTS and UE, Uu) of a network over a specified frequency band, and perform control actions such as configuration and scheduling on the UE, but the base station cannot monitor a Communication situation of the terminal Equipment (e.g., V2X terminal Equipment, roadside Equipment) on a side/bypass/branch (SL) through a near Communication Port 5(Proximity Communication Port 5, PC5) interface in real time, and no matter whether the side link Communication has any situation, such as resource selection conflict, system congestion, packet loss, intervention delay increase, the base station cannot be reconfigured or controlled at any time. In addition, if the terminal equipment transmits non-safety information (for example, illegal information) on the allocated side link resource, the whole system safety is broken, and the base station cannot monitor any information.

Disclosure of Invention

The invention aims to provide a communication monitoring method and communication equipment, which are used for solving the problem that a base station cannot monitor and acquire the bypass sidelink communication condition in real time.

In order to achieve the above object, an embodiment of the present invention provides a communication monitoring method, including:

and monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource.

Wherein, on the bypass SL communication resource, monitoring the SL communication behavior of the terminal device in real time includes:

and acquiring the SL communication message of the terminal equipment on the bypass SL communication resource.

Wherein, on the bypass SL communication resource, acquiring the SL communication message of the terminal device includes at least one of the following methods:

continuously receiving or discontinuously receiving SL communication messages of the terminal equipment on SL time domain resources;

continuously receiving or discontinuously receiving SL communication messages of the terminal equipment on SL frequency domain resources;

receiving a SL communication message of the terminal equipment on part of SL communication resources;

decoding a transmission message of a target communication interface on SL communication resources to obtain an SL communication message of terminal equipment, wherein the target communication interface is a communication interface between the terminal equipment;

and decoding the transmission message reported by the terminal equipment through the SL communication resource to obtain the SL communication message of the terminal equipment.

Wherein the transmission message comprises all messages on a SL communication resource, a control message on the SL communication resource, a data message on the SL communication resource or a part of fields in the control message on the SL communication resource.

Wherein the SL communication message comprises at least one of a synchronization message, a control information SCI, a feedback message and a data message.

After monitoring the SL communication behavior of the terminal device in real time on the bypass SL communication resource, the method further includes:

according to the SL communication behavior of the terminal equipment, processing SL communication resources and/or controlling the terminal equipment to switch the communication mode;

wherein the SL communication resource processing comprises: resource pre-configuration processing, resource reconfiguration processing, resource scheduling processing or resource rescheduling processing.

The processing of the SL communication resources according to the SL communication behavior of the terminal device includes at least one of the following methods:

under a dynamic scheduling mode, the SL communication behavior of the terminal equipment comprises that the initial transmission of the terminal equipment is successful, and when the retransmission operation is not needed, the resource which is distributed to the terminal equipment and is not used any more by the terminal equipment is determined as idle resource, and the resource reconfiguration processing is carried out on the idle resource;

in the dynamic scheduling mode, the SL communication behavior of the terminal device includes that when the terminal device does not complete transmission or fails to transmit in the scheduled SL communication resources, the terminal device is allocated with resources used for scheduling next transmission.

in a terminal competition mode, when the SL communication behavior of the terminal equipment comprises that a target SL communication resource configured for the terminal equipment is not used or partial resource in the target SL communication resource is not used, performing resource reconfiguration processing on the unused target SL communication resource;

in a terminal competition mode, when the SL communication behavior of the terminal equipment comprises that the terminal equipment successfully transmits initially and the retransmitted reserved resource is not used any more, carrying out resource reconfiguration processing on the retransmitted reserved resource;

in the terminal contention mode, the SL communication behavior of the terminal device includes that a target SL communication resource configured for the terminal device is completely occupied, or includes that a plurality of terminal devices or a plurality of services compete for the same SL communication resource, or includes that the terminal device does not select an available SL communication resource in a configured resource pool, or includes that the terminal device is interfered when communicating on the selected SL communication resource, the operating mode of all or part of the terminal device is switched to the base station scheduling mode, and/or the terminal device which does not select the SL communication resource is reconfigured with the resource for the terminal device to select.

Wherein, the processing of the SL communication resource according to the SL communication behavior of the terminal device includes:

under a semi-persistent scheduling mode, the SL communication behavior of the terminal device includes that when the SL communication resources allocated to the terminal device by the base station are no longer used by the terminal device, the SL communication resources allocated to the terminal device are determined as idle resources, and resource reconfiguration processing is performed on the idle resources.

and under a preset scheduling mode, when the SL communication behavior of the terminal equipment comprises that the terminal equipment does not use SL communication resources distributed by the base station in a preset time or uses part of SL communication resources distributed by the base station in the preset time, carrying out resource reconfiguration processing on the SL communication resources which are distributed by the base station and are not used in the preset time.

In order to achieve the above object, an embodiment of the present invention further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:

Wherein the processor, when executing the program, further implements the steps of:

Wherein the processor executes the program to implement at least one of the following methods:

Wherein the SL communication messages comprise at least one of synchronization messages, control information SCI, feedback messages and data messages.

Wherein the processor when executing the program further implements the steps of:

under a preset scheduling mode, when the SL communication behavior of the terminal equipment comprises that the terminal equipment does not use SL communication resources allocated by the base station within a preset time or uses part of SL communication resources allocated by the base station within the preset time, carrying out resource reconfiguration processing on the SL communication resources allocated by the base station and not used within the preset time.

In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the communication listening method as described above.

In order to achieve the above object, an embodiment of the present invention further provides a communication device, including:

and the monitoring module is used for monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource.

The monitoring module is used for acquiring the SL communication message of the terminal equipment on the bypass SL communication resource.

Wherein the listening module is configured to perform at least the following methods:

Wherein, above-mentioned communications facilities still includes:

the processing module is used for processing SL communication resources and/or controlling the terminal equipment to switch the communication mode according to the SL communication behavior of the terminal equipment;

The embodiment of the invention has the following beneficial effects:

according to the technical scheme of the embodiment of the invention, the SL communication behavior of the terminal equipment is monitored in real time on the side SL communication resources, so that the network equipment can conveniently perform operations such as pre-configuration of resources, reallocation of resources, switching of scheduling modes or reuse of allocated resources and the like on the terminal equipment based on the monitored condition, the utilization efficiency of V2X resources (pools) is improved, resource selection conflicts are reduced, the reliability and flexibility of a V2X communication system are improved, and the communication delay of the system is reduced.

Drawings

FIG. 1 illustrates a resource allocation process in a dynamic scheduling mode;

FIG. 2 is a process of resource allocation in semi-persistent scheduling mode;

fig. 3 is a flowchart illustrating a communication monitoring method according to an embodiment of the present invention;

fig. 4 is a block diagram of a communication device according to an embodiment of the present invention;

fig. 5 is a block diagram of a communication device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.

In the communication system of 3GPP LTE V2X, uplink/downlink communication is performed between a base station and a terminal through a Uu interface, and direct link communication is performed between a terminal UE and the terminal UE through a PC5 interface (Sidelink). According to the allocation of the LTE V2X spectrum, the LTE V2X may support the PC5 interface to communicate on a dedicated carrier (5.9GHz band) and the Uu interface to communicate with a cellular shared carrier (2.6GHz band), respectively.

In the coverage area of the E-utran (lte) network, the node of V2X determines which Mode (Mode 3 or Mode 4) the node communicates through according to the configuration information in the received signaling. The current LTE V2X technology supports 2 operating modes as follows:

(1) base station scheduling mode:

the transmission resource of a PC5 interface of the UE, a modulation and coding strategy MCS and the like are distributed by an LTE base station, wherein a Uu interface of the LTE base station transmits a scheduling signaling to a terminal, and the base station controls the communication of the terminal UE on a sidelink through dynamic scheduling or semi-persistent scheduling SPS; the terminal can also report the measurement information to the base station through the Uu interface. The LTE V2V standard is referred to as Mode 1, and the LTE V2X and subsequent standards are referred to as Mode 3.

For the aperiodic service, the base station uses a dynamic scheduling mode for the UE, and the base station sends downlink control information DCI to the UE through the Uu interface, and directly indicates the transmission resource of the UE on sidelink, as shown in fig. 1, including: the UE1 transmitter initializes with the base station; the UE1 sender sends a scheduling request to the base station; the base station transmits a scheduling grant (DCI) of SA and data to the UE1 transmitter; the UE1 transmitter transmits SA and data on the granted resources to the UE2 receiver; the UE1 transmitter sends a scheduling request to the base station; the base station sends a scheduling grant of SA and data to the UE1 transmitter; the UE1 transmitter transmits the SA and data on the granted resources to the UE2 receiver.

For periodic services, the method for a base station to configure SPS for a UE is that the base station sends downlink control information DCI to the UE through a Uu interface, where the downlink control information DCI includes configuration information of multiple SPS and indicates whether to activate SPS processes or to end SPS processes that have been activated, as shown in fig. 2, includes: the UE1 transmitter initializes with the base station; the UE1 transmitter sends a scheduling request to the base station; the base station transmits a scheduling grant (DCI) of the SA and the data to the UE1 transmitter, the DCI including a plurality of SPS configurations and activations; the UE1 transmitter performs bypass SPS transmissions with the UE2 receiver; the base station transmits a scheduling grant (DCI) of the SA and data to the UE1 transmitter, the DCI including a plurality of SPS configurations and releases.

Under the mode, the LTE base station sends configuration information and scheduling signaling to the UE through a Uu interface (2.6GHz frequency band), and the UE which is subjected to cross-carrier configuration and scheduling and communicates through a PC5 interface in a special frequency band (5.9GHz frequency band) belongs to dynamic scheduling in coverage.

(2) Terminal competition mode:

the sending resource allocation and MCS format of the UE in the system are completely determined by the terminal self (distributed), and the distributed scheduling function is realized by a method of sensing and semi-continuous occupation without the intervention of a base station. Referred to as Mode 2 in the LTE V2V standard and Mode 4 in LTE V2X and subsequent standards.

When the UE works in the mode, the LTE base station sends the parameters of the configured resources to the UE through a Uu interface (2.6GHz frequency band), and after the UE receives the parameters, the configured resources are used in a special frequency band (5.9GHz frequency band) and are communicated with other UEs through a PC5 interface, so that the UE belongs to semi-static configuration in coverage.

The UE operates in this mode without any cellular network assistance, all UEs employ preconfigured parameters, and the preconfigured parameters indicate that the UE operates in a dedicated frequency band (5.9GHz band) and belongs to an out-of-coverage scenario.

As can be seen from the above description, in the V2X communication system, two communication modes, that is, the "base station scheduling mode" and the "terminal contention" are mainly used. However, in any mode, after the communication resource on the sidelink between the UEs is determined, the base station side cannot intervene in the communication on the PC5 interface, that is, the base station cannot know any information communicated by the UEs on the side link, and cannot perform operations such as control and scheduling.

In the base station scheduling mode, after receiving the DCI sent by the base station, the UE knows the time-frequency resource of its own sidelink communication, and immediately starts to perform single transmission or periodic transmission on the PC5 interface, at this time, the base station cannot participate in any process of sidelink communication for all UEs. The base station cannot know whether the UE successfully receives and decodes the DCI content, whether the UE successfully transmits a single transmission, and whether retransmission is required (initial transmission and retransmission resources are configured at the same time), and cannot know occupation of sidelink real-time communication resources. Therefore, sidelink resource selection conflicts, waste of allocated resources due to unused resources, and the like may occur.

In the terminal competition mode, the UE performs autonomous resource selection on sidelink according to the configuration information of the base station, and then transmits and receives. At this point, the base station cannot participate in any process of communicating on sidelink. The whole sidelink resource can be shared by a plurality of UE at the same time, and various factors such as the service type, the period, the data packet size and the like among the UE are different, so that resource selection conflict can be easily caused during sidelink communication. When a large number of UEs or a large number of services occur simultaneously, congestion may occur, and at this time, problems such as increased time delay, decreased system performance due to packet loss, and the like may occur.

In addition, once the sidelink resource is configured and started to be transmitted by the base station, the base station side loses monitoring and control over the sidelink, and the UE may also transmit some unreasonable or even illegal resources by using the sidelink, which greatly reduces the system security.

Based on this, as shown in fig. 3, an embodiment of the present invention provides a communication monitoring method, which is applied to a communication device, where the communication device may specifically be a base station or a drive test device RSU, and the method includes:

step 301: and monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource.

The bypass SL communication resources include SL time domain resources, SL frequency domain resources, and some or all of the SL communication resources.

In the embodiment of the invention, the network equipment monitors all or part of communication behaviors such as information on the bypass communication resources, the use condition of the time-frequency resources and the like in real time. Specifically, after the terminal device communicates on the SL communication resource through the PC5 interface, the communication device monitors the SL communication behavior of the terminal device on the SL communication resource in real time.

Optionally, step 301 includes: and acquiring the SL communication message of the terminal equipment on the bypass SL communication resource.

Specifically, on the bypass SL communication resource, acquiring the SL communication message of the terminal device includes at least one of the following methods:

the method comprises the following steps: and continuously receiving or discontinuously receiving the SL communication messages of the terminal equipment on the SL time domain resources.

The method 2 comprises the following steps: and continuously receiving or discontinuously receiving the SL communication messages of the terminal equipment on the SL frequency domain resources.

The method 3 comprises the following steps: and receiving the SL communication message of the terminal equipment on the partial SL communication resource.

The method 4 comprises the following steps: and decoding a transmission message of a target communication interface on the SL communication resource to obtain the SL communication message of the terminal equipment, wherein the target communication interface is a communication interface between the terminal equipment.

The target communication interface may be embodied as a PC5 interface.

The method 5 comprises the following steps: and decoding the transmission message reported by the terminal equipment through the SL communication resource to obtain the SL communication message of the terminal equipment.

The transmission message includes all messages on the SL communication resource, a control message on the SL communication resource, a data message on the SL communication resource, or a part of fields in the control message on the SL communication resource.

The SL communication message includes at least one of a synchronization message, control information SCI, a feedback message, and a data message.

In the embodiment of the invention, the network equipment can only monitor and can also carry out corresponding operation according to the monitored condition.

Further, after monitoring the SL communication behavior of the terminal device in real time on the bypass SL communication resource, the method further includes:

according to the SL communication behavior of the terminal equipment, SL communication resource processing is carried out and/or the terminal equipment is controlled to carry out communication mode switching;

wherein the SL communication resource processing comprises: resource pre-configuration processing, resource reconfiguration processing, resource scheduling processing or resource rescheduling processing. The communication mode comprises a base station scheduling mode and a terminal competition mode.

As a first optional implementation manner, the performing, according to the SL communication behavior of the terminal device, SL communication resource processing includes at least one of the following methods:

the method comprises the following steps: under the dynamic scheduling mode, the SL communication behavior of the terminal equipment comprises that the initial transmission of the terminal equipment is successful, and when the retransmission operation is not needed, the resource which is allocated to the terminal equipment and is not used any more by the terminal equipment is determined as idle resource, and the resource reconfiguration processing is carried out on the idle resource.

Wherein the resources no longer used by the terminal device include, but are not limited to, retransmission resources. In the embodiment of the present invention, the resource reconfiguration processing on the idle resource includes, but is not limited to, allocating the idle resource to other services of the terminal device or allocating the idle resource to other terminal devices for use.

The method 2 comprises the following steps: in the dynamic scheduling mode, the SL communication behavior of the terminal device includes that when the terminal device does not complete transmission or fails to transmit in the scheduled SL communication resources, the terminal device is allocated with resources used for scheduling next transmission.

Wherein, the resource used for allocating the scheduled next transmission for the terminal device may be the same as or different from the previous resource.

In this implementation, in the dynamic scheduling mode, after the communication device configures and schedules the control signaling for the terminal device, the terminal device communicates on the SL communication resource through the PC5 interface, and the communication device receives communication information, including but not limited to a synchronization message, control information SCI, a feedback message, and data information, on the whole or a part of the SL time-frequency resource.

As a second optional implementation manner, the performing, according to the SL communication behavior of the terminal device, the SL communication resource processing includes at least one of the following methods:

the method comprises the following steps: and under a terminal competition mode, when the SL communication behavior of the terminal equipment comprises that the target SL communication resource configured for the terminal equipment is not used or partial resource in the target SL communication resource is not used, carrying out resource reconfiguration processing on the unused target SL communication resource.

Here, the resource reconfiguration processing of the unused target SL communication resource includes allocation of other traffic to the terminal device or allocation of other terminal devices.

The method 2 comprises the following steps: and under a terminal competition mode, carrying out resource reconfiguration processing on the retransmitted reserved resource when the SL communication behavior of the terminal equipment comprises that the initial transmission of the terminal equipment is successful and the retransmitted reserved resource is not used any more.

The method 3 comprises the following steps: in the terminal contention mode, the SL communication behavior of the terminal device includes that a target SL communication resource configured for the terminal device is completely occupied, or includes that a plurality of terminal devices or a plurality of services compete for the same SL communication resource, or includes that the terminal device does not select an available SL communication resource in a configured resource pool, or includes that the terminal device is interfered when communicating on the selected SL communication resource, the operating mode of all or part of the terminal device is switched to the base station scheduling mode, and/or the terminal device which does not select the SL communication resource is reconfigured with the resource for the terminal device to select.

The partial terminal devices include a terminal device which does not select the SL communication resource, a terminal device which is allocated with the SL communication resource but does not use the SL communication resource, M terminal devices of N terminal devices competing for the same SL communication resource, a terminal device which is selected according to the service priority level, and/or a terminal device which is selected randomly. M and N are positive integers, N is more than 1, and M is more than 0 and less than N.

In the implementation mode, the base station determines that the terminal equipment adopts a competition mode to perform sidelink communication, and simultaneously configures sidelink resources for the terminal equipment to perform autonomous selection. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like.

As a third optional implementation manner, the performing, according to the SL communication behavior of the terminal device, SL communication resource processing includes:

The SL communication resource allocated by the base station to the terminal device is no longer used by the terminal device, including that the resource allocated to the terminal device is not occupied, the terminal device ends the cycle in advance and no longer occupies the allocated SL communication resource, the resource allocated to the terminal device is no longer used due to no retransmission, or the allocated resource is no longer used due to other predetermined conditions.

Here, in the SPS semi-persistent scheduling scheme, after the base station sends configuration and scheduling control signaling to the terminal device and is activated, the UE occupies a certain time on the sidelink resource through the PC5 interface and performs communication according to a predetermined period. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like.

As a fourth optional implementation manner, the performing, according to the SL communication behavior of the terminal device, SL communication resource processing includes:

The predetermined scheduling mode is a base station scheduling mode, and comprises the following steps: at least one of semi-persistent resource allocation, multi-slot resource configuration, Grant free Type-1 (Grant free Type-1) and Grant free Type-2 (Grant free Type-2).

After the base station activates the assigned sidelink resources, the base station detects the idle condition of the resources such as long-time unused or only partially used resources of the terminal equipment, and the base station regards the resources as idle resources and replans the idle resources, including but not limited to other services assigned to the terminal equipment or other terminal equipments.

In the mode without signaling activation, whether the sidelink resource is used or not is determined by the terminal after the base station allocates the sidelink resource to the terminal equipment. The base station detects that the terminal device is not used for a long time or only uses a part of the resources and the like to be idle, the base station regards the resources as idle resources, and the idle resources are rescheduled to be used, including but not limited to other service usage allocated to the terminal device or other terminal device usage allocated to the terminal device.

The above-described implementation is specifically described below with reference to specific embodiments.

The first embodiment is as follows: in the base station scheduling mode, the base station only monitors and does not operate.

In the dynamic scheduling mode, after the base station sends configuration and scheduling control signaling to the terminal equipment, the UE communicates on sidelink resources through a PC5 interface. The base station receives communication messages including but not limited to synchronization, control information SCI, feedback, data information, etc., over all or a portion of sidelink time frequency resources. The base station only listens to all or part of the information on the sidelink without any intervention.

In the SPS semi-persistent scheduling mode, after the base station sends configuration and scheduling control signaling to the terminal device for activation, the UE occupies a certain time on the sidelink resource through the PC5 interface and performs communication according to a predetermined period. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like. The base station only listens to all or part of the information on the sidelink without any intervention.

The second embodiment: in the base station scheduling mode, the base station monitors and operates.

In the dynamic scheduling mode, after the base station sends configuration and scheduling control signaling to the terminal equipment, the UE communicates on sidelink resources through a PC5 interface. The base station receives communication messages including but not limited to synchronization, control information SCI, feedback, data information, etc., over all or a portion of sidelink time frequency resources.

If the terminal device initially transmits successfully without further operations such as retransmission, the base station regards the resources (including but not limited to retransmission resources) which are allocated to the terminal device and are not used any more as idle resources, and plans the idle resources again for use, including but not limited to other service usage allocated to the terminal device and other terminal device usage allocated to the terminal device.

If the terminal device does not complete transmission or fails transmission in the scheduled resources, the base station immediately allocates and schedules resources for the terminal to transmit next time without requesting from the base station, and the rescheduled resources may be the same as or different from the previous resources.

The base station may notify the terminal device of the monitored result, the operation on the idle resource, and other information, or may choose not to notify.

Example three: in the base station scheduling mode, the base station monitors and operates.

In the SPS semi-persistent scheduling mode, after the base station sends configuration and scheduling control signaling to the terminal device for activation, the UE occupies a certain time on the sidelink resource through the PC5 interface and performs communication according to a predetermined period. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like.

The base station monitors that the resources allocated to the terminal device are not occupied, the periodic process is ended in advance and is not occupied any more, the base station does not need to retransmit and is idle, and other situations cause the allocated resources to be not used any more.

Example four: in the base station scheduling mode, the base station monitors and operates.

Other base station scheduling methods include, but are not limited to, semi-persistent resource allocation, multi-slot resource allocation, Grant free Type-1 and Type-2, etc. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like.

Based on the signaling activation/deactivation mode, after the base station activates the assigned sidelink resources, by detecting the condition that the terminal device is not used for a long time or only uses a part of the resources and the like to be idle, the base station regards the resources as idle resources, and replans and uses the unused idle resources, including but not limited to other services assigned to the terminal device and other services assigned to other terminal devices.

In the mode without signaling activation, whether the sidelink resource is used or not is determined by the terminal after the base station allocates the sidelink resource to the terminal equipment. The base station detects that the terminal device is idle for a long time, only uses a part of the unused resources, and the like, and the base station regards the unused resources as idle resources, and replans the idle resources for use, including but not limited to other service usage allocated to the terminal device and usage allocated to other terminal devices.

Example five: in the terminal competition mode, the base station only monitors and does not operate.

The base station determines that the terminal equipment adopts a competition mode to carry out sidelink communication, and simultaneously configures sidelink resources for the terminal equipment to carry out autonomous selection. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like. The base station only listens to all or part of the information on the sidelink without intervening in any operation.

Example six: and in the terminal competition mode, the base station monitors and operates.

The base station determines that the terminal equipment adopts a competition mode to carry out sidelink communication, and simultaneously configures sidelink resources for the terminal equipment to carry out autonomous selection. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like. When the base station monitors that a part of sidelink resources are allocated to the terminal equipment or selected by the terminal equipment, one or more of the following conditions occur:

case 1: these resources have not been used;

case 2: wherein a portion of the resources remain unused;

case 3: the initial transmission is successful, and the reserved resource of the retransmission is not used.

The base station treats these unused resources as idle resources, and plans these idle resources again for use, including but not limited to other traffic usage assigned to this terminal device and usage assigned to other terminal devices.

Example seven: and in the terminal competition mode, the base station monitors and operates.

The base station determines that the terminal equipment adopts a competition mode to carry out sidelink communication, and simultaneously configures sidelink resources for the terminal equipment to carry out autonomous selection. The base station receives communication messages on the whole or part of sidelink time frequency resources, wherein the communication messages comprise synchronization, control information SCI, feedback, data information and the like. The base station monitors one or more of the following conditions:

case 1: sidelink resources are all occupied;

case 2: a plurality of terminal devices or services compete for the same resource;

case 3: the terminal equipment does not select available resources in the configured resource pool;

case 4: the terminal device is subject to interference when communicating on the selected resource.

The base station can intervene in sidelink communication at any time and perform one or more of the following operations:

operation 1: and the base station switches all the terminal equipment into a base station scheduling mode.

Operation 2: the base station switches a part of terminal devices into a base station scheduling mode, wherein the terminal devices include but are not limited to terminal devices which do not select resources, terminal devices which are allocated resources but do not use the resources, M terminal devices of N terminal devices competing for the same resources (M and N are positive integers, N is greater than 1, and 0 is less than M and less than N), terminal devices selected according to the service priority level, terminal devices selected randomly, and the like.

Operation 3: and the base station reconfigures the resources for the terminal equipment which does not select the resources for selection.

In addition, it should be noted that, in addition to the base station scheduling mode and the terminal contention mode, if there are other configuration modes, the base station receives the communication message on the whole or part of sidelink time-frequency resource, which includes synchronization, control information SCI, feedback, data information, and the like. If there are cases in the first to seventh embodiments, the operations of the base stations are respectively the same.

The base station in the above embodiment includes: an LTE (-A) base station eNB, an NR base station gNB or a roadside device RSU. The terminal device includes: LTE terminal equipment UE, NR terminal equipment UE or UE-type drive test equipment RSU. The communication of the terminal device on the SL communication resource includes unicast, multicast or broadcast, and the terminal device and the base station share the carrier and the frequency band, and the terminal device uses the V2X dedicated carrier and the frequency band. In addition, the terminal device may share the frequency band and the carrier with the base station, and the terminal device may also use the dedicated frequency band and the carrier allocated to V2X.

The communication monitoring method of the embodiment of the invention monitors the SL communication behavior of the terminal equipment in real time on the side SL communication resources, so that the network equipment can carry out operations such as pre-configuration of resources, reallocation of resources, switching of scheduling modes or reuse of allocated resources and the like on the terminal equipment based on the monitored condition, thereby improving the utilization efficiency of V2X resources (pools), reducing resource selection conflicts, improving the reliability and flexibility of a V2X communication system and reducing the communication delay of the system.

As shown in fig. 4, an embodiment of the present invention further provides a communication device, which may be specifically a base station or a drive test device RSU, and includes a memory 420, a processor 400, a transceiver 410, a bus interface, and a computer program stored in the memory 420 and executable on the processor 400, where the processor 400 is configured to read a program in the memory 420 and execute the following processes:

Where in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 400, and memory, represented by memory 420, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 410 may be a plurality of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

Optionally, the processor 400 may further implement the following steps when executing the computer program:

Optionally, the processor 400, when executing the computer program, further implements at least one of the following methods:

Optionally, the transmission message includes all messages on the SL communication resource, a control message on the SL communication resource, a data message on the SL communication resource, or a part of fields in the control message on the SL communication resource.

Optionally, the SL communication message includes at least one of a synchronization message, a control information SCI, a feedback message, and a data message.

The communication equipment of the embodiment of the invention monitors the SL communication behavior of the terminal equipment in real time on the side SL communication resources, so that the network equipment can conveniently carry out operations such as pre-configuration of resources, reallocation of resources, switching of scheduling modes or reuse of allocated resources and the like on the terminal equipment based on the monitored condition, the utilization efficiency of V2X resources (pools) is improved, resource selection conflicts are reduced, the reliability and flexibility of a V2X communication system are improved, and the communication time delay of the system is reduced.

In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

When executed by a processor, the program can implement all implementation manners in the above method embodiments, and details are not described here to avoid repetition.

As shown in fig. 5, an embodiment of the present invention further provides a communication device, including:

and the monitoring module 501 is configured to monitor the SL communication behavior of the terminal device in real time on the bypass SL communication resource.

In the communication device of the embodiment of the present invention, the monitoring module is configured to obtain the SL communication message of the terminal device on the bypass SL communication resource.

In the communication device of the embodiment of the present invention, the monitoring module is configured to execute at least the following methods:

receiving a SL communication message of a terminal device on a part of SL communication resources;

In the communication device of the embodiment of the present invention, the transmission message includes all messages on SL communication resources, a control message on the SL communication resources, a data message on the SL communication resources, or a part of fields in the control message on the SL communication resources.

In the communication device of the embodiment of the present invention, the SL communication message includes at least one of a synchronization message, a control information SCI, a feedback message, and a data message.

The communication device of the embodiment of the invention further comprises:

In the communication device of the embodiment of the present invention, the processing module is configured to execute at least one of the following methods:

In the communication device of the embodiment of the present invention, the processing module is configured to, in a semi-persistent scheduling manner, determine, when the SL communication behavior of the terminal device includes that the SL communication resource allocated by the base station to the terminal device is no longer used by the terminal device, the SL communication resource allocated to the terminal device as an idle resource, and perform resource reconfiguration processing on the idle resource.

In the communication device of the embodiment of the present invention, the processing module is configured to, in a predetermined scheduling manner, perform resource reconfiguration processing on SL communication resources that have been allocated by the base station and are not used within a predetermined time when the SL communication behavior of the terminal device includes that the terminal device does not use the SL communication resources allocated by the base station within the predetermined time or uses a part of the SL communication resources allocated by the base station within the predetermined time.

In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of communication listening, comprising:

monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource;

2. The communication monitoring method according to claim 1, wherein the monitoring SL communication behavior of the terminal device in real time on the bypass SL communication resource comprises:

3. The communication monitoring method according to claim 2, wherein the obtaining of the SL communication message of the terminal device on the SL communication resource by-pass includes at least one of:

4. The communication listening method of claim 3 wherein the transmission message comprises all messages on a SL communication resource, control messages on the SL communication resource, data messages on the SL communication resource or part of fields in control information on the SL communication resource.

5. The communication listening method of claim 3 wherein the SL communication messages comprise at least one of synchronization messages, control information SCI, feedback messages and data messages.

6. The communication monitoring method according to claim 1, wherein the SL communication resource processing according to the SL communication behavior of the terminal device includes at least one of:

7. The communication monitoring method according to claim 1, wherein the SL communication resource processing according to the SL communication behavior of the terminal device includes at least one of:

8. The communication monitoring method according to claim 1, wherein the performing SL communication resource processing according to the SL communication behavior of the terminal device includes:

9. The communication monitoring method according to claim 1, wherein the performing SL communication resource processing according to the SL communication behavior of the terminal device includes:

10. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:

the processor, when executing the program, further implements the steps of:

11. The communication device of claim 10, wherein the processor when executing the program further performs the steps of:

12. The communications device of claim 11, wherein the processor when executing the program further implements at least one of:

13. The communications device of claim 12, wherein the transmission message comprises all messages on a SL communications resource, a control message on the SL communications resource, a data message on the SL communications resource, or a portion of a field in control information on the SL communications resource.

14. A communication device according to claim 12, characterized in that the SL communication message comprises at least one of a synchronization message, a control information SCI, a feedback message and a data message.

15. The communications device of claim 10, wherein the processor when executing the program further implements at least one of:

16. The communications device of claim 10, wherein the processor when executing the program further implements at least one of:

17. The communication device of claim 10, wherein the processor when executing the program further performs the steps of:

18. The communication device of claim 10, wherein the processor when executing the program further performs the steps of:

19. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the communication listening method according to one of claims 1 to 9.

20. A communication device, comprising:

the monitoring module is used for monitoring the SL communication behavior of the terminal equipment in real time on the bypass SL communication resource;

21. The communication device according to claim 20, wherein the monitoring module is configured to obtain a SL communication message of the terminal device on a bypass SL communication resource.

22. The communications device of claim 21, wherein the listening module is configured to perform at least the following method: