WO2018028412A1

WO2018028412A1 - Method and device for area control

Info

Publication number: WO2018028412A1
Application number: PCT/CN2017/093760
Authority: WO
Inventors: 刘佳敏; 伯特兰⋅皮埃尔
Original assignee: 电信科学技术研究院
Priority date: 2016-08-12
Filing date: 2017-07-21
Publication date: 2018-02-15
Also published as: CN107734572B; CN107734572A

Abstract

Embodiments of the present disclosure provide a method and a device for area control. The method comprises: a network device notifying a UE via L1 signaling or L2 signaling to perform a switch process from a source TRP to a target TRP when the UE moves from a coverage area of the source TRP in a connected state mobile area (CMA) to a coverage area of the target TRP in the CMA; or the network device notifying the UE via RRC signaling to perform a switch process from a source TRP to a target TRP when the UE moves from a coverage area of the source TRP in a source CMA to a coverage area of the target TRP in a target CMA.

Description

Method and device for regional control

Cross-reference to related applications

The present application claims priority to the Chinese Patent Office, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for area control.

Background technique

Referring to Figure 1, a schematic diagram of a mobile communication system is shown. In the LTE (Long Term Evolution) system, most of the nodes on the network side are wired. For example, a base station (such as an eNB) is connected by a wired link, or an eNB and a core network node (such as an MME (Mobility Management Entity), an S-GW ((Serving GateWay), etc.) It is also possible to take a wired link connection between the two.

In the related art, a cell is defined as a set of downlink resources and possible uplink resources. The association of the downlink resource carrier frequency and the uplink resource carrier frequency is indicated by a system message transmitted on the downlink resource. The carrier frequency refers to the center frequency of the cell. Different carriers form different cells, and carriers can provide services to users through carrier aggregation (CA).

The Cell is a network device that serves the UE on the same carrier frequency and serves the UE. Currently, the maximum bandwidth of a single carrier is 20 MHz.

In the related art, a single node or a small number of nodes of an ideal backhaul connection constitute one cell, and an idle state UE needs to re-read system messages and perform necessary cell reselection operations when operating across cells. For connected users, the UE needs to perform a handover procedure and update security parameters across the cell. When there are massive network nodes and each node has a small coverage, the mobility process may occur very frequently for the user equipment, not only the user experience is not good, but also the network efficiency is not high.

In the future development of mobile communication systems, in order to better meet the needs of users and greatly improve network capacity and throughput, more transmission nodes and larger transmission bandwidth will be introduced. Each transmission node or each frequency point is a cell. For example, in a 5G network, a massive number of transmission nodes manage and open the cell. Sales bring great challenges.

Summary of the invention

In view of the above technical problem, the embodiments of the present disclosure provide a method and a device for area control, so as to ensure that UEs in an idle state or a connected state can smoothly move between TRP nodes, reduce common overhead and signaling overhead, and improve users. Business experience and improve network efficiency.

In a first aspect, a method of area control is provided, the method comprising:

When the user equipment UE moves from the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the network device notifies the UE to perform handover from the source TRP through L1 signaling or L2 signaling. The switching process to the target TRP; or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the network device notifies the UE to perform a handover procedure from the source TRP to the target TRP through RRC signaling.

Optionally, the network device notifies the UE to perform a handover process from a source TRP to a target TRP by using L1 signaling or L2 signaling, including:

The network device determines a measurement result of the UE;

Determining, by the network device, whether the UE needs to switch the TRP according to the measurement result of the UE;

If the judgment result is that the UE needs to switch the TRP, the network device notifies the UE to perform a handover process from the source TRP to the target TRP by using L1 signaling or L2 signaling.

Optionally, the range of one CMA is the same as the range of a system message area SIA, where the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in different SIAs.

Optionally, the network device indicates, by using RRC signaling, that the UE performs a handover process from a source TRP to a target TRP, including:

The network device determines a measurement result of the UE;

If the judgment result is that the UE needs to switch the TRP, the network device initiates a handover preparation process to the control node of the target CMA;

If the network device receives the message of successful reception sent by the target CMA, the network device notifies the UE to perform a handover process from the source TRP to the target TRP by using RRC signaling.

Optionally, the range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs;

Or the range of one CMA is larger than the range of one SIA, and the source TRP and the target TRP are located in different SIAs.

In a second aspect, a method of area control is provided, the method comprising:

When the user equipment UE is moved by the coverage area of the source TRP in the connection state mobile area CMA to the coverage area of the target TRP in the CMA, the UE acquires the notification of the network equipment by using L1 signaling or L2 signaling, and performs the slave The switching process in which the source TRP switches to the target TRP; or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the UE acquires the notification of the network device through RRC signaling, and performs a handover procedure from the source TRP to the target TRP.

Optionally, before the acquiring the notification of the network device by using the L1 signaling or the L2 signaling, the method further includes: the UE sending the measurement result to the network device;

The UE acquires the notification of the network device by using the L1 signaling or the L2 signaling, and performs a handover process from the source TRP to the target TRP, including:

The UE acquires a handover command sent by the network device according to the measurement result by using L1 signaling or L2 signaling, initiates an access procedure to the target TRP, and switches to the target TRP to work.

Optionally, before the obtaining, by the UE, the notification of the network device by using the RRC signaling, the method further includes: the UE sending the measurement result to the network device;

The UE acquires the notification of the network device by using the RRC signaling, and performs a handover process from the source TRP to the target TRP, including:

The UE acquires a handover command by using RRC signaling, initiates an access procedure to the target TRP in the target CMA, and switches to the target TRP to work.

Optionally, the range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA.

Optionally, the range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in different SIAs;

The method further includes:

The UE acquires a system message corresponding to a new SIA of the target TRP.

Optionally, the UE acquires a system message of a new SIA corresponding to the target TRP, including:

Obtaining, by the UE, a system message of a new SIA by receiving a broadcast in a new SIA; or

Obtaining, by the UE, a system message of a new SIA through a dedicated signaling process; or

The UE acquires a system message of a new SIA in a manner that the UE is configured in advance by the network.

In a third aspect, a network device is provided, where the network device includes:

a first switching module, configured to: source TRP in the user equipment UE by the connected state mobile area CMA When the coverage area moves to the coverage area of the target TRP in the CMA, the UE is notified by L1 signaling or L2 signaling to perform a handover procedure from the source TRP to the target TRP; and/or

a second switching module, configured to notify the UE to perform handover from a source TRP to a target TRP by using RRC signaling when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA process.

Optionally, the first switching module is further configured to: determine a measurement result of the UE; determine, according to the measurement result of the UE, whether the UE needs to switch the TRP; if the judgment result is that the UE needs to switch the TRP, pass the L1 signaling or the L2 The UE is signaled to perform a handover procedure from the source TRP to the target TRP.

Optionally, the range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in the same system message area SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same system message area SIA; or

The range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in the same system message area SIA; or

Optionally, the second switching module is further configured to: determine a measurement result of the UE; determine, according to the measurement result of the UE, whether the UE needs to switch the TRP; if the judgment result is that the UE needs to switch the TRP, start to the control node of the target CMA. The handover preparation process is performed; if the network device receives the message of successful reception sent by the target CMA, the UE is notified by RRC signaling to perform a handover process from the source TRP to the target TRP.

The range of one CMA is larger than the range of one SIA, and the source TRP and the target TRP are not located. The same SIA.

In a fourth aspect, a terminal is provided, where the terminal includes:

a third switching module, configured to acquire, by the L1 signaling or the L2 signaling, the network device when the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA Notifying that the handover process from the source TRP to the target TRP is performed; and/or

And a fourth switching module, configured to: when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, obtain a notification of the network device by using RRC signaling, and perform a handover from the source TRP to the target TRP. The switching process.

Optionally, the third switching module is further configured to: send a measurement result to the network device, acquire, by using L1 signaling or L2 signaling, a handover command sent by the network device according to the measurement result, and initiate the message to the target TRP. The access process switches to the target TRP to work.

Optionally, the fourth switching module is further configured to: send a measurement result to the network device; acquire a handover command by using RRC signaling, initiate an access procedure to the target TRP in the target CMA, and switch to the target TRP. jobs.

The terminal further includes:

And an obtaining module, configured to acquire a system message of a new SIA corresponding to the target TRP.

Optionally, the acquiring module is further configured to: obtain a system message of a new SIA by receiving a broadcast in a new SIA; or obtain a system message of a new SIA by using a dedicated signaling process; or pre-configured through the network side. The way to get the system message of the new SIA.

In a fifth aspect, an embodiment of the present disclosure further provides a network device.

The network device includes a processor, a transceiver, and a memory, wherein:

The processor is configured to read a program in the memory and perform the following process:

When the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the UE is notified by the L1 signaling or L2 signaling sent by the transceiver. Switching process from source TRP to target TRP; and/or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling sent by the transceiver notifies the UE to perform a handover procedure from the source TRP to the target TRP. .

In a sixth aspect, an embodiment of the present disclosure further provides a terminal, where the terminal includes a processor, a transceiver, and a memory, where

When the user equipment UE is moved by the coverage area of the source TRP in the connection state mobile area CMA to the coverage area of the target TRP in the CMA, the network device is notified by L1 signaling or L2 signaling received by the transceiver. And performing a handover procedure from the source TRP to the target TRP; and/or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling received by the transceiver acquires the notification of the network device, and performs the handover from the source TRP to the target TRP. The switching process.

One technical solution in the foregoing technical solution has the following advantages or advantages: the UE that ensures the idle state or the connected state can smoothly move between TRP nodes, and the network side controls the transmission node more flexibly, and reduces the public overhead and the letter. Increase overhead, improve user experience, and improve the network Network efficiency.

DRAWINGS

1 is a schematic diagram of an LTE system;

2 is a flowchart of a method for area control in Embodiment 1 of the present disclosure;

3 is a flowchart of a method for area control in Embodiment 2 of the present disclosure;

4 is a block diagram of a network device in Embodiment 7 of the present disclosure;

5 is a block diagram of a terminal in Embodiment 8 of the present disclosure;

6 is a schematic block diagram of a network device in accordance with an embodiment of the present disclosure;

FIG. 7 is a schematic block diagram of a terminal in accordance with an embodiment of the present disclosure.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

Those skilled in the art will appreciate that embodiments of the present disclosure may be implemented as a system, apparatus, device, method, or computer program product. Thus, embodiments of the present disclosure may be embodied in the form of full hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

In the embodiment of the present disclosure, the user equipment (User Equipment, referred to as "UE") may be referred to as a terminal, a mobile station ("MS" for short), a mobile terminal (Mobile Terminal), or the like.

The System Information Area (SIA) indicates that multiple TRP nodes form a system message area. In the same system message area, the system messages used by the TRP nodes are partially or completely the same and are continuously valid. When the idle state UE moves within the system message area, the system message obtained at the initial entry may be used, and the system message does not need to be repeatedly read across the TRP node. Optionally, the UE may obtain the correspondence between the TRP and the SIA from the system message or the downlink signal, which is of course not limited thereto.

Connected Mode Mobility Area (CMA) indicates multiple TRPs The nodes form a connected state moving area. The L1/L2 process is performed when the connected state UE moves within the connected state moving area. Optionally, the UE does not need to update the security information; when the connected state UE moves in the cross-connected mobile area, the RRC handover process is performed. Optionally, the UE needs to perform a security update process.

It should be noted that the relationship between CMA and SIA is as follows:

The CMA area can be equal to the SIA area, that is, the idle state and the connected mobile control area are the same.

The CMA area may be larger than the SIA area, and the CMA area generally includes an integer number of SIA areas, that is, a case where one SIA area is avoided to belong to two CMA areas.

The CMA area may also be smaller than the SIA area, and the SIA area generally includes an integer number of CMA areas, that is, a case where one CMA area is avoided to belong to two SIA areas.

Embodiment 1

Referring to Figure 2, a method of area control is shown, the specific steps are as follows:

Step 201: When the UE moves from the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the network device notifies the UE to perform the slave TRP by using L1 signaling or L2 signaling. Switch to the target TRP switching process; or

Step 202: When the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the network device notifies the UE to perform a handover process from the source TRP to the target TRP by using RRC signaling.

It should be noted that, in this embodiment, the source TRP can be understood as a source TRP group, and the target TRP can be understood as a target TRP group.

In this embodiment, optionally, the network device notifies the UE to perform a handover process from a source TRP to a target TRP by using L1 signaling or L2 signaling, including:

The network device determines a measurement result of the UE;

For the scenario in which the foregoing network device is notified that the UE performs the handover from the source TRP to the target TRP by using L1 signaling or L2 signaling:

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in the same SIA, or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA, or

That is, in the above scenario, the source TRP and the target TRP may be in one CMA.

In this embodiment, optionally, the network device indicates, by using RRC signaling, that the UE performs a handover process from a source TRP to a target TRP, including:

The network device determines a measurement result of the UE;

It should be noted that the foregoing measurement result may be a measurement result that is measured by the UE according to the configuration of the network side. For example, the UE continuously performs channel link detection on the neighboring TRP including the serving TRP according to the configuration. Alternatively, the foregoing measurement result may also be a detection result obtained by detecting the uplink on the network side.

A scenario for the handover process in which the foregoing network device indicates that the UE performs a handover from a source TRP to a target TRP through RRC signaling:

That is, in the above scenario, the source TRP and the target TRP are not in one CMA.

In this embodiment, the UE in the idle state or the connected state can be smoothly moved between the TRP nodes, and the network side can more flexibly control the transport node, reduce the common overhead and signaling overhead, and improve the user experience. Improve network efficiency.

Embodiment 2

Referring to FIG. 3, a region control method is illustrated, and the specific steps are as follows:

Step 301: When the UE moves from the coverage area of the source TRP in the connection state mobile area CMA to the coverage area of the target TRP in the CMA, the UE acquires the notification of the network device by using L1 signaling or L2 signaling, and performs The handover process from the source TRP to the target TRP;

Step 302: When the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the UE acquires the notification of the network device by using RRC signaling, and performs handover from the source TRP to the target TRP. Switching process.

In this embodiment, optionally, the UE may send the measurement result to the network device; the UE acquires the notification of the network device by using the L1 signaling or the L2 signaling, and performs a handover process from the source TRP to the target TRP, including:

The UE acquires a handover command by using L1 signaling or L2 signaling, initiates an access procedure to the target TRP, and switches to the target TRP to work.

It should be noted that the foregoing measurement result may be a measurement result that is measured by the UE according to the configuration of the network side. For example, the UE continuously performs channel link detection on the neighboring TRP including the serving TRP according to the configuration.

For the scenario in which the foregoing UE obtains a handover command through L1 signaling or L2 signaling, initiates an access procedure to the target TRP, and switches to the target TRP to work:

In this embodiment, optionally, the UE acquires the notification of the network device by using the RRC signaling, and performs a handover process from the source TRP to the target TRP, including:

Transmitting, by the UE, a measurement result to a network device;

For the scenario that the foregoing UE acquires the notification of the network device by using the RRC signaling, the handover process from the source TRP to the target TRP is performed:

In the above scenario, if the source TRP and the target TRP are located in different SIAs, the method further includes:

The UE acquires a system message corresponding to a new SIA of the target TRP.

Acquisition mode 1: The UE obtains the system message of the new SIA by receiving the broadcast in the new SIA. For example, the UE may obtain a system message of a new SIA by receiving a broadcast within the new SIA. This process is similar to the idle state UE process, and the related system message is read at a specific location or a scheduled location. However, since the broadcasted system message has a certain periodicity and cannot be received immediately, the reception time is long. It is applicable to information that is not sensitive to delay, such as MBMS (Multimedia Broadcast Multicast Service) information.

Acquisition mode 2: The UE obtains a system message of a new SIA through a dedicated signaling process. For example, if the system message is more urgent, the UE does not obtain the system message and cannot perform normal work in the TRP under the new SIA. Such system messages are suitable for immediately notifying the UE by dedicated signaling. At this time, these system messages may be sent to the UE together with the information of the handover TRP, which may be an RRC signaling procedure. Equivalently, the UE converts the TRP within one SIA, and can be notified by L1/L2 signaling, and when the UE transitions between the TRPs that belong to one CMA across the SIA, if a new system message needs to be notified by RRC signaling, or is changed For configuration, it is necessary to use the RRC signaling procedure while notifying new system messages and TRP transitions. If the RRC signaling procedure is not required, L1/L2 signaling can still be used.

The acquisition mode is as follows: The UE obtains the system message of the new SIA by using the network side to configure in advance. For example, for a more urgent system message of the SIA that may be involved, the network side may configure the UE in advance, that is, notify the UE by RRC signaling before the UE moves to the SIA. For example, when the UE moves to the CMA, it obtains system messages of all SIAs, which can be carried in the handover command. Then, when the UE moves to the SIA, only the L1/L2 signaling is required to notify the UE to change to the target TRP, and the system message of the SIA to which the target TRP belongs has been obtained in advance.

Embodiment 3

This embodiment describes the process of area control when the idle state UE moves within the system message area.

In this embodiment, the SIA area is planned by the network side, and is generally semi-statically configured. That is, according to the plan, all TRPs in the set 1 belong to the SIA1 area, all TRPs in the set 2 belong to the SIA2 area, and so on. When it is found that the configuration needs to be changed, the change can be made. For example, the TRP of the SIA area is changed to be shut down first, and then reconfigured to become a new SIA area. If a power-on change is required, it is necessary to follow a certain modification period and notify the UE of the change. The mapping between the TRP and the SIA area is carried by explicit signaling, which can be as follows:

- the SIA ID (SIA identifier) is carried in the synchronization signal, for example, the synchronization signal is scrambled by the SIA ID;

- Broadcasting the mapping relationship between the synchronization signal and the SIA area.

All TRPs belonging to one SIA area on the network side plan to use the same system message. Some of these TRPs are broadcast transmissions of system messages. Some TRPs may only support the request mode of system messages. One implementation is as follows:

The network plans a certain TRP to synchronize the system message broadcast transmission. Generally, these TRPs The combination can provide continuous coverage to the UE. The network side centrally controls the TRPs sent by these broadcasts by the centralized nodes, and delivers the system message content and transmission mode and transmission resource configuration to these TRPs to ensure that these TRPs can simultaneously transmit the same content on the air interface with the same resources. System messages sent in broadcast mode may only be part of the content, and more detailed content may be sent by dedicated mode or multicast, small-scale broadcast.

When the UE is powered on, or moved into a new SIA area by other areas, the UE process is as follows:

- the UE first searches for the synchronization signal and establishes a basic downlink synchronization process with the network side;

- The UE reads the broadcast system message, obtains the basic information of the area, and if appropriate, resides on the area.

When the UE moves, if the UE moves from the coverage of one TRP to the coverage of another TRP, the UE performs the following procedure.

First, the UE detects the received signal strength of the new TRP or the quality of the received signal. In a predetermined configuration calculation mode, if the new TRP is better than the original TRP, the UE can move to the new TRP. The UE judges whether the new TRP (also referred to as the target TRP) and the original TRP (also referred to as the source TRP) belong to one SIA area according to the obtained information, and if it belongs to the same SIA area, the UE continues to camp and use The obtained system message performs various operations; if it does not belong to the same SIA area, the UE considers that the SIA area is replaced. At this time, it is necessary to re-read the system message of the new SIA area, and judge whether it is suitable for the resident according to the situation.

The information obtained by the foregoing may be a mapping relationship between the TRP and the SIA area, and the mapping relationship may be notified to the UE by the network device.

Embodiment 4

This embodiment describes the process of area control when the connected UE moves within the CMA or when moving across the CMA.

The network generally configures which TRPs belong to a CMA in a semi-static manner. Plan and complete the configuration before the initial work. After the TRP is turned on, it will start working according to the configured CMA. When the intermediate discovery needs to reconfigure the CMA to which the TRP belongs, one way is to shut down the TRP, and then perform a new configuration after booting. The other way is to take a certain modification period and execute a new CMA configuration at the boundary of the modification period. And inform the UE.

When the UE initiates random access and establishes a connection according to the access related parameters in the system message configuration After the process, the UE enters the connected state. Generally, the UE does not need to know which TRPs belong to a CMA, because the connection state is completely controlled by the network side, and the network side controls the UE. Therefore, the mapping relationship between the CMA and the TRP does not need to be broadcast signaling. The notification is performed in a manner such that the idle state UE does not know the range of the CMA. The network side can control when the UE performs the L1/L2 handover process between the TRPs and when the L3 handover process of the CMA area is performed.

For the connected UEs, it is possible to implicitly know which TRPs are internal to the same CMA and which TRPs belong to the TRPs across the CMA from different measurement configurations. For example, the measurement results of different TRPs within a CMA do not require L3 filtering. However, the measurement result between the TRPs across the CMA requires L3 filtering, or the parameters of the measurement filtering are different.

The following describes two different mobility processes:

Scene 1, the movement between TRPs inside a CMA:

First, the network needs to configure the TRP measurement for the UE, and the UE continuously performs channel link detection on the neighboring TRP including the serving TRP according to the measurement configuration. When the reporting condition is met, the result is reported to the network side. The reporting condition may be periodic reporting, or when the threshold value is reported, for example, when the neighboring TRP measurement value is higher than the service TRP threshold value and is maintained for a certain period of time. Reported.

Optionally, there is another method, which is not to measure the report by the UE, but to determine the most suitable TRP for serving the UE by detecting the uplink on the network side.

Regardless of the UE reporting or the network self-detection, after the network collects the measurement result, it is determined that if the current serving node needs to be replaced, the UE needs to be notified of the TRP change by the L1/L2 signaling, and the source and destination TRP or TRP group. Between the UE context and the transfer of data, so that the UE can obtain continuous services in the new TRP;

After receiving the service TRP change, the UE starts to transmit with the new TRP.

Scene 2, moving between TRPs across CMA:

In this manner, the triggering is generally performed based on the measurement reporting of the UE. Of course, the network may also actively trigger the UE to switch to another CMA for the purpose of load balancing.

The network side process is as follows:

Step 1: The network needs to configure corresponding measurements for the UE.

Step 2: Receive the measurement report result of the UE, and judge the measurement report result. If the condition of the cross-CMA handover is met, the handover preparation process is initiated to the control node of the target CMA. The control node of the standard CMA may be a centralized control node or may be located on a distributed TRP;

Step 3: When the target CMA replies to the admission success and the configuration of the UE, the handover command of the UE is sent to the UE;

Step 4: Receive release signaling to release the UE context.

UE side process:

Step 1: The UE receives a measurement configuration related to the network side;

Step 2: The measurement is performed according to the configuration, and the corresponding L3 filtering is performed, and the measurement result is compared with the criterion for the measurement report triggering. When the condition of the measurement report is reached, the measurement result is reported to the network side;

Step 3: Receive a handover command, initiate an access procedure to the target TRP in the target CMA, switch to the target side to work, and feed back the handover completion signaling to the target node.

Embodiment 5

When the CMA is greater than the SIA, it is assumed that the CMA may contain two or more SIAs. For the idle state UE, since the range of the SIA may only be seen, the process of the idle state is still performed (as in the third embodiment), and is not described here.

For the connected state UE, when the UE moves across the CMA, the process is similar to the cross-CMA moving process in the fourth embodiment, and will not be described here.

When the UE moves within one CMA, if the original TRP and the target TRP belong to one SIA, the process is similar to the moving process in one CMA in Embodiment 4, and is not described here.

When the UE moves within a CMA, and the original service TRP and the target TRP belong to different SIA areas, the process has certain specialities:

In terms of measurement, the signal comparison between the service TRP and the target TRP may have different configurations when the target TRP belongs to different SIAs. For example, in the case of the same SIA, the target TRP may be required to satisfy the replacement condition by a first predetermined value (for example, 2 dB) higher than the service TRP signal strength; and in different cases of the SIA, the target TRP may be required to be higher than the service TRP signal strength. The predetermined value (for example, 3 dB) can be considered as the replacement condition, and if there is a duration requirement, the duration of the latter may be higher. In the case of the same SIA, the process is simpler, and the signaling required across the SIA is more, so the conditions are slightly higher to avoid the ping-pong problem.

In the implementation process, when the UE reports the measurement result across the SIA, the network performs comprehensive judgment. If it is decided to replace the UE with the target TRP under the new SIA to serve, the UE is notified in addition to the original L1/L2 signaling. Need to get the relevant system news of the new SIA. The way the UE gets the system message is as follows:

- The UE can obtain the system message of the new SIA by receiving the broadcast in the new SIA. This process is similar to the idle state UE process, and the related system message is read at a specific location or a scheduled location, but the broadcast system message has a certain Periodically, it cannot be received immediately, and the receiving time is long. This method is applicable to information that is not sensitive to delay, such as MBMS (Multimedia Broadcast Multicast Service) information.

- The UE can also obtain the system message in the new SIA through a dedicated signaling procedure. If the information is more urgent, the UE does not obtain the information and cannot perform normal work in the TRP under the new SIA. The UE is notified to the UE by means of dedicated signaling. In this case, the information may be sent to the UE together with the information of the handover TRP, which may be an RRC signaling procedure. Equivalent, the UE converts the TRP in one SIA, and can be notified by L1/L2 signaling, and when the UE transitions between the TRPs that belong to one CMA across the SIA, if the system message of the RRC signaling notification letter is needed or changed To configure, you need to use the RRC signaling procedure to notify the new system message and TRP conversion. If the RRC signaling procedure is not needed, L1/L2 signaling can still be used.

- The UE obtains the system message of the new SIA by means of the network side configuration in advance. For example, for a more urgent system message of the SIA that may be involved, the network side may be configured to the UE in advance, that is, before the UE moves to the SIA, the UE is notified by RRC signaling, for example, when the UE moves to the CMA, System messages in which all SIAs are obtained can be carried in the switch command. Then, when the UE moves to the SIA, only the L1/L2 signaling is required to notify the UE to change to the target TRP, and the system message of the SIA to which the target TRP belongs has been obtained in advance.

Embodiment 6

When the CMA is smaller than the SIA, the connected UE moves within the entire CMA, each TRP belongs to the same SIA, and the system messages are the same or partially the same, then the UE may not need to perform additional operations, and the foregoing embodiment The process of moving within the four CMA is similar.

When the UE moves across the CMA, the TRP of the CMA may belong to the same SIA as the original TRP of the UE. Therefore, for the same SIA, the UE may not need to reacquire the system message. If the device belongs to a different SIA, the UE needs to obtain a new system message. Generally, the network side directly sends the message to the UE through the handover command.

Example 7

Referring to FIG. 4, a network device is illustrated. The network device 1400 includes:

The first switching module 1401 is configured to notify, by using L1 signaling or L2 signaling, when the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA. The UE performs a handover procedure from the source TRP to the target TRP; and/or

The second switching module 1402 is configured to notify the UE to perform handover from the source TRP to the target TRP by using RRC signaling when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA. Switching process.

In this embodiment, the first switching module is further configured to: determine a measurement result of the UE; determine, according to the measurement result of the UE, whether the UE needs to switch the TRP; if the judgment result is that the UE needs to switch the TRP, The UE is notified by the L1 signaling or the L2 signaling to perform a handover procedure from the source TRP to the target TRP.

In this embodiment, optionally, the range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in the same system message area SIA; or

In this embodiment, the second switching module is further configured to: determine a measurement result of the UE; determine, according to the measurement result of the UE, whether the UE needs to switch the TRP; if the judgment result is that the UE needs to switch the TRP, The control node of the target CMA initiates a handover preparation process; if the network device receives the message of successful reception sent by the target CMA, the UE is notified by RRC signaling to perform a handover procedure from the source TRP to the target TRP.

In this embodiment, optionally, the range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

In this embodiment, the UE that ensures the idle state or the connected state can smoothly move between the TRP nodes, and the network side can more flexibly control the transit node, reduce the common overhead and signaling overhead, and improve the user service experience. And improve network efficiency.

Example eight

Referring to FIG. 5, a terminal is shown, and the terminal 1500 includes:

The third switching module 1501 is configured to acquire the network device by using L1 signaling or L2 signaling when the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA. Notification of the handover process from the source TRP to the target TRP; and/or

The fourth switching module 1502 is configured to: when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, obtain a notification of the network device by using RRC signaling, and perform a handover from the source TRP to the target. TRP switching process.

In this embodiment, the third switching module is further configured to: send a measurement result to the network device; acquire a handover command by using L1 signaling or L2 signaling, initiate an access process to the target TRP, and switch Work at the target TRP.

In this embodiment, the fourth switching module is further configured to: send a measurement result to the network device; acquire a handover command by using RRC signaling, initiate an access process to the target TRP in the target CMA, and switch Work at the target TRP.

In this embodiment, optionally, the range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in the same SIA.

In this embodiment, optionally, the range of one CMA is smaller than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The terminal further includes:

In this embodiment, the acquiring module is further configured to: obtain a system message of a new SIA by receiving a broadcast in a new SIA; or obtain a system message in a new SIA by using a dedicated signaling process; or Obtain the system message of the new SIA by means of the network side configuration in advance.

In some examples, the above method relating to area control of the network side device may be performed by the network side device shown in FIG. 6. The network side device shown in FIG. 6 may include a processor 601, a transceiver 602, and a memory 603. Memory 603 can include read only memory or random access memory and provides instructions and data to processor 601. A portion of the memory 603 may also include an NVRAM (Non Volatile Random Access Memory). The processor 601, the transceiver 602, and the memory 603 are coupled together by a bus system 610. The bus system 610 includes a power bus, a control bus, a status signal bus, and the like in addition to the data bus. Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the processor 601 may be a general-purpose processor, including a CPU (Central Processing Unit), an NP (Network Processor, etc.), or a DSP (Digital Signal Processor, Digital). Signal Processing), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic blocks disclosed in the embodiments of the present disclosure may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The processor 601 is configured to read a program in the memory 603 and perform the following process:

When the UE moves from the coverage area of the source TRP in the connected state mobility area CMA to the coverage area of the target TRP in the CMA, the L1 signaling or L2 signaling sent by the transceiver 602 notifies the UE to perform the slave TRP. Switching to the target TRP switching process; and/or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling sent by the transceiver 602 notifies the UE to perform a handover procedure from the source TRP to the target TRP.

Similarly, in some examples, the above-described method involving area control of a terminal can be performed by the terminal shown in FIG. The terminal shown in FIG. 7 may include a processor 701, a transceiver 702, and a memory 703. Processor 701, transceiver 702, and memory 703 are coupled together by a bus system 710.

The processor 701 is configured to read a program in the memory 703 and perform the following process:

When the UE moves from the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the notification of the network device is obtained through the L1 signaling or the L2 signaling received by the transceiver 702, And the processor 701 is configured to perform a handover process of switching from the source TRP to the target TRP; and/or

When the processor 701 determines that the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling received by the transceiver 702 acquires the notification of the network device, and performs The handover process from the source TRP to the target TRP.

For specific embodiments, reference may be made to the above, and details are not described herein again.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present disclosure. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined from A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present disclosure. Within the scope of protection of the present disclosure.

Claims

A method of region control, the method comprising:

When the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the network device notifies the UE to perform from the source by L1 signaling or L2 signaling. The TRP switches to the handover process of the target TRP; or

When the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the network device notifies the UE to perform handover from the source TRP to the target TRP by RRC signaling. Switching process.
The method according to claim 1, wherein the network device notifies the UE to perform a handover procedure from the source TRP to the target TRP by using L1 signaling or L2 signaling, including:

Determining, by the network device, a measurement result of the UE;

Determining, by the network device, whether the UE needs to switch the TRP according to the measurement result of the UE;

If the result of the determination is that the UE needs to switch the TRP, the network device notifies the UE to perform a handover procedure from the source TRP to the target TRP by using L1 signaling or L2 signaling.
The method of claim 2, wherein

The range of one CMA is the same as the range of a system message area SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located at different SIAs.
The method according to claim 1, wherein the network device instructs the UE to perform a handover procedure from the source TRP to the target TRP by using RRC signaling, including:

Determining, by the network device, a measurement result of the UE;

Determining, by the network device, whether the UE needs to switch the TRP according to the measurement result of the UE;

If the result of the determination is that the UE needs to switch the TRP, the network device controls the target CMA. The node initiates a handover preparation process;

And if the network device receives the message that the destination CMA sends the success, the network device notifies the UE to perform a handover process from the source TRP to the target TRP by using RRC signaling.
The method of claim 4, wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs;

Or the range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in different SIAs.
A region control method, the method comprising:

When the user equipment UE is moved by the coverage area of the source TRP in the connection state mobile area CMA to the coverage area of the target TRP in the CMA, the UE acquires the notification of the network equipment by using L1 signaling or L2 signaling, and performs the slave Switching the source TRP to the target TRP; or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the UE acquires the notification of the network device by using RRC signaling, and performs handover from the source TRP to the target TRP. The switching process.
The method according to claim 6, wherein before the UE acquires the notification of the network device by using L1 signaling or L2 signaling, the method further includes:

Transmitting, by the UE, the measurement result to the network device;

The UE acquires the notification of the network device by using the L1 signaling or the L2 signaling, and performs a handover process from the source TRP to the target TRP, including:

The UE acquires a handover command sent by the network device according to the measurement result by using L1 signaling or L2 signaling, initiates an access procedure to the target TRP, and switches to the target TRP to work.
The method of claim 7 wherein

The range of a CMA is the same as the range of a system message area SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located at different SIAs.
The method according to claim 6, wherein before the UE acquires the notification of the network device by using the RRC signaling, the method further includes:

Transmitting, by the UE, a measurement result to a network device;

The UE acquires the notification of the network device by using the RRC signaling, and performs a handover process from the source TRP to the target TRP, including:

The UE acquires a handover command sent by the network device according to the measurement result by using the RRC signaling, initiates an access procedure to the target TRP in the target CMA, and switches to the target TRP to work.
The method of claim 9 wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA.
The method of claim 9 wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in different SIAs;

The method further includes:

The UE acquires a system message corresponding to a new SIA of the target TRP.
The method of claim 11 wherein

The UE acquires a system message of a new SIA corresponding to the target TRP, including:

Obtaining, by the UE, a system message of the new SIA by receiving a broadcast in a new SIA; or

Obtaining, by the UE, a system message of the new SIA by using a dedicated signaling procedure; or

The UE acquires the system message of the new SIA in a manner that the UE is configured in advance by the network.
A network device, the network device comprising:

a first switching module, configured to notify the UE by using L1 signaling or L2 signaling when the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA Performing a handover process of switching from the source TRP to the target TRP; and/or

a second switching module, configured to: when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, notify the UE to perform handover from the source TRP to the The switching process of the target TRP.
The network device according to claim 13, wherein the first switching module is further configured to: determine a measurement result of the UE; determine, according to a measurement result of the UE, whether the UE needs to switch a TRP; if the determination result is that the UE needs The TRP is switched, and the UE is notified to perform a handover procedure from the source TRP to the target TRP by using L1 signaling or L2 signaling.
The network device according to claim 14, wherein

The range of a CMA is the same as the range of a system message area SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located at different SIAs.
The network device according to claim 13, wherein the second switching module is further configured to: determine a measurement result of the UE; determine, according to a measurement result of the UE, whether the UE needs to switch a TRP; if the determination result is that the UE needs Switching the TRP to the control node of the target CMA And a handover preparation process; if the network device receives the message that the target CMA sends the success, the RRC signaling is used to notify the UE to perform a handover process from the source TRP to the target TRP.
The network device according to claim 16, wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located at different SIAs.
A terminal, the terminal comprising:

a third switching module, configured to acquire, by the L1 signaling or the L2 signaling, the network device when the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA Notifying that a handover process from the source TRP to the target TRP is performed; and/or

a fourth switching module, configured to: when the UE is moved by the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, obtain a notification of the network device by using RRC signaling, and perform handover from the source TRP to The switching process of the target TRP.
The terminal according to claim 18, wherein the third switching module is further configured to: send a measurement result to the network device; acquire, by using L1 signaling or L2 signaling, the network device to send according to the measurement result. The switching command initiates an access procedure to the target TRP, and switches to the target TRP to work.
The terminal according to claim 19, wherein

The range of a CMA is the same as the range of a system message area SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located at different SIAs.
The terminal according to claim 18, wherein the fourth switching module is further configured to: send a measurement result to the network device; acquire, by using RRC signaling, a handover command sent by the network device according to the measurement result, to The target TRP in the target CMA initiates an access procedure, and switches to the target TRP to work.
The terminal according to claim 21, wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in the same SIA.
The terminal of claim 21, wherein

The range of one CMA is less than the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is the same as the range of one SIA, and the source TRP and the target TRP are located in different SIAs; or

The range of one CMA is greater than the range of one SIA, and the source TRP and the target TRP are located in different SIAs;

The terminal further includes:

And an obtaining module, configured to acquire a system message of a new SIA corresponding to the target TRP.
The terminal according to claim 23, wherein the obtaining module is further configured to: obtain a system message of the new SIA by receiving a broadcast in a new SIA; or acquire the new by a dedicated signaling process The system message in the SIA is obtained; or the system message of the new SIA is obtained by means of the network side being configured in advance.
A network device includes a processor, a transceiver, and a memory, wherein:

The processor is configured to read a program in the memory and perform the following process:

When the user equipment UE is moved by the coverage area of the source TRP in the connected state mobile area CMA to the coverage area of the target TRP in the CMA, the UE is notified by the L1 signaling or L2 signaling sent by the transceiver. Switching process from source TRP to target TRP; and/or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling sent by the transceiver notifies the UE to perform a handover procedure from the source TRP to the target TRP. .
A terminal comprising a processor, a transceiver, and a memory, wherein

The processor is configured to read a program in the memory and perform the following process:

When the user equipment UE is moved by the coverage area of the source TRP in the connection state mobile area CMA to the coverage area of the target TRP in the CMA, the network device is notified by L1 signaling or L2 signaling received by the transceiver. And performing a handover procedure from the source TRP to the target TRP; and/or

When the UE moves from the coverage area of the source TRP in the source CMA to the coverage area of the target TRP in the target CMA, the RRC signaling received by the transceiver acquires the notification of the network device, and performs the handover from the source TRP to the target TRP. The switching process.