CN109831807B

CN109831807B - Indicating method of pilot frequency information, access network node and core network node

Info

Publication number: CN109831807B
Application number: CN201711183183.5A
Authority: CN
Inventors: 范江胜; 梁靖
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-11-23
Filing date: 2017-11-23
Publication date: 2021-10-26
Anticipated expiration: 2037-11-23
Also published as: CN109831807A; WO2019101070A1

Abstract

The invention provides a pilot frequency information indicating method, an access network node and a core network node, and relates to the technical field of communication. The method for indicating the pilot frequency information is applied to a first access network node where a first cell is located, and comprises the following steps: receiving configuration information related to the slice of the second cell sent by the second access network node; the second cell is a pilot frequency adjacent cell of the first cell. According to the scheme, the configuration information related to the slices of the pilot frequency adjacent cells is obtained, so that the subsequent cell reselection or switching process of the terminal can be carried out according to the configuration information.

Description

Indicating method of pilot frequency information, access network node and core network node

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a pilot frequency information indicating method, an access network node, and a core network node.

Background

The concept of network slicing is introduced into a New Radio (NR) system, different slicing types correspond to different service types, an operator can flexibly configure the network slicing types supported by the operator at a network side according to the own requirements, and in order to improve the flexibility of network side slicing deployment to the maximum extent, the slicing types deployed in different frequency point cells support independent configuration. At present, the cell reselection between cells with the same frequency does not need to consider the limitation of network slices, and in the background of network deployment slices, a terminal performing inter-frequency cell reselection or handover can preferably reselect or handover to an inter-frequency cell supporting the service of the terminal, otherwise, the terminal has the possibility of frequently performing inter-frequency cell reselection or handover, and even has the possibility of service interruption of a connected terminal under extreme conditions. Therefore, if the terminal can obtain the slice type support information of the pilot frequency adjacent cell from the network side, the terminal can reselect or switch to the pilot frequency cell suitable for the terminal, so that the process of the terminal for performing pilot frequency cell reselection or switching is optimized to the maximum extent. From the core network, there is still a possibility that the slice type will increase in the future, and once the slice support type of the core network changes (including addition or deletion), the inter-frequency cell slice support information broadcast by the network side also needs to be updated.

However, the conventional Long Term Evolution (LTE) system does not have the concept of slice type when performing inter-frequency cell reselection or handover, and if the LTE inter-frequency cell reselection or handover mechanism is used in the NR system, the blindness of terminal cell reselection or handover may be caused, and once the cell selected by the terminal reselection or handover does not support the slice service required by the terminal, the terminal performs a new reselection or handover process, in this way, the use of the LTE inter-frequency cell reselection or handover mechanism not only increases the power consumption of the terminal, but also is difficult to ensure the continuity of the terminal service.

Disclosure of Invention

The embodiment of the invention provides an indication method of pilot frequency information, an access network node and a core network node, and aims to solve the problem that the subsequent terminal reselection or switching process is influenced and the reliability of network communication cannot be ensured because a terminal side does not know the slice support condition of a pilot frequency adjacent cell.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for indicating inter-frequency information, which is applied to a first access network node where a first cell is located, and includes:

receiving configuration information related to the slice of the second cell sent by the second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

Specifically, the configuration information includes: frequency points supported by a second cell, and slice information and frequency point priority information corresponding to the frequency points; or

The configuration information includes: the frequency points supported by the second cell and the slice information, the frequency point priority information and the slice mapping rule corresponding to the frequency points;

and the frequency point supported by the second cell and the slice information corresponding to the frequency point implicitly or explicitly indicate the slice priority information.

Further, the step of receiving configuration information related to a slice of a second cell sent by a second access network node includes:

when determining that the configuration information interaction can be carried out between the first access network node and the second access network node, receiving configuration information related to the slice of the second cell sent by the second access network node;

wherein the configuration information is actively sent by the second access network node; or

The configuration information is sent by the second access network node based on a request of the first access network node.

Further, after the step of receiving the configuration information related to the slice of the second cell sent by the second access network node, the method further includes:

and storing the configuration information.

receiving an update indication of configuration information sent by a second access network node;

updating the configuration information according to the updating indication;

generating a first preset domain in the system broadcast message according to the updated configuration information, wherein the first preset domain exists in the minimum system broadcast message or other broadcast messages except the minimum system broadcast message;

wherein the update indication comprises: and the frequency point supported by the second cell and at least one of the first updating information of the slice information, the second updating information of the priority information of the frequency point and the third updating information of the slice mapping rule corresponding to the frequency point.

Further, the updating indication includes: when a frequency point supported by a second cell and first update information of slice information corresponding to the frequency point are included, the first update information includes indication information for indicating to add slices and/or delete slices, the indication information carries identification information of the slices, and the identification information is used for indicating to add and/or delete the slices.

Further, the updating indication includes: and when the frequency point supported by the second cell and the first updating information of the slice information corresponding to the frequency point are the first updating information, the first updating information comprises indication information for updating the slice priority in the preset frequency point.

Further, the updating indication includes: and when second updating information of the frequency point priority information and/or third updating information of the slice mapping rule are/is acquired according to at least one of the change of the operator strategy and the change of the network load.

and generating a second preset domain in the system broadcast message according to the configuration information, wherein the second preset domain exists in the minimum system broadcast message or other broadcast messages except the minimum system broadcast message.

The embodiment of the present invention further provides a method for indicating pilot frequency information, which is applied to a second access network node where a second cell is located, and includes:

receiving slice information supported by a network and sent by a core network node;

acquiring configuration information related to slices supported by a second cell according to the slice information;

sending the configuration information to a first access network node where a first cell is located;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the step of receiving the slice information supported by the network and sent by the core network node includes:

receiving slice information actively sent by a core network node within a preset time window and supported by a network; or

And receiving the slice information supported by the network, which is sent by the core network node in a preset time window based on the slice information acquisition request of the second access network node.

Further, after the step of obtaining the slice-related configuration information supported by the second cell according to the slice information, the method further includes:

and storing the configuration information.

Further, after the step of sending the configuration information to the first access network node where the first cell is located, the method further includes:

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

The embodiment of the invention also provides a method for indicating the pilot frequency information, which is applied to a core network node and comprises the following steps:

and sending the slice information supported by the network to the second access network node.

Further, before the step of sending the network-supported slice information to the second access network node, the method further includes:

acquiring a slice information acquisition request sent by the second access network node;

and sending the slice information supported by the network to the second access network node in a preset time window.

Further, after the step of sending the network-supported slice information to the second access network node, the method further includes:

if the slice information supported by the network is updated, the updated slice information is sent to the second access network node;

wherein, the updated slice information is actively sent by the core network node; or

The updated slice information is sent by the core network node based on a request of the second access network node.

The embodiment of the invention also provides a first access network node, which comprises a transceiver, a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein a first cell is divided in the first access network node; wherein the processor is used for reading the program in the memory and executing the following processes:

receiving, by a transceiver, configuration information related to a slice of a second cell sent by a second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the configuration information includes: frequency points supported by a second cell, and slice information and frequency point priority information corresponding to the frequency points; or

Further, the processor is used for reading the program in the memory and executing the following processes:

and storing the configuration information.

updating the configuration information according to the updating indication;

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above method for indicating pilot frequency information.

The embodiment of the invention also provides a first access network node, wherein the first access network node is divided into first cells; the method comprises the following steps:

a first receiving module, configured to receive configuration information related to a slice of a second cell sent by a second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the first receiving module is configured to:

Further, the first access network node further comprises:

and the storage module is used for storing the configuration information.

Further, the first access network node further comprises:

a second receiving module, configured to receive an update indication of configuration information sent by a second access network node;

the updating module is used for updating the configuration information according to the updating indication;

a first generating module, configured to generate a first preset domain in a system broadcast message according to the updated configuration information, where the first preset domain exists in a minimum system broadcast message or in other broadcast messages except the minimum system broadcast message;

Further, the first access network node further comprises:

and the second generating module is used for generating a second preset domain in the system broadcast message according to the configuration information, wherein the second preset domain exists in the minimum system broadcast message or other broadcast messages except the minimum system broadcast message.

The embodiment of the invention also provides a second access network node, which comprises a transceiver, a memory, a processor and a computer program which is stored on the memory and can be operated on the processor, wherein a second cell is divided in the second access network node; wherein the processor is used for reading the program in the memory and executing the following processes:

the second cell is a pilot frequency adjacent cell of the first cell.

And receiving the slice information supported by the network, which is sent by the core network node in a preset time window based on the request of the second access network node.

and storing the configuration information.

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

The embodiment of the invention also provides a second access network node, wherein the second access network node is divided into second cells; wherein, include:

a third receiving module, configured to receive slice information supported by a network and sent by a core network node;

a first obtaining module, configured to obtain configuration information related to a slice supported by a second cell according to the slice information;

a first sending module, configured to send the configuration information to a first access network node where a first cell is located;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the third receiving module is configured to:

Further, the second access network node further includes:

and the second storage module is used for storing the configuration information.

Further, the second access network node further includes:

the second acquisition module is used for acquiring the update indication of the configuration information;

a second sending module, configured to send the update indication to the first access network node;

The embodiment of the invention also provides a core network node, which comprises a transceiver, a memory, a processor and a computer program which is stored on the memory and can run on the processor; wherein the processor is used for reading the program in the memory and executing the following processes:

transmitting, by the transceiver, network supported slice information to the second access network node.

and sending the slice information supported by the network to the second access network node in a preset time window through the transceiver.

if the slice information supported by the network is updated, the updated slice information is sent to the second access network node through the transceiver;

An embodiment of the present invention further provides a core network node, including:

and the third sending module is used for sending the slice information supported by the network to the second access network node.

Further, the core network node further includes:

a third obtaining module, configured to obtain a slice information obtaining request sent by the second access network node;

and the fourth sending module is used for sending the slice information supported by the network to the second access network node in a preset time window.

Further, the core network node further includes:

a fifth sending module, configured to send the updated slice information to the second access network node if the slice information supported by the network is updated;

The invention has the beneficial effects that:

according to the scheme, the configuration information related to the slices of the pilot frequency adjacent cells is obtained, so that the subsequent cell reselection or switching process of the terminal can be carried out according to the configuration information.

Drawings

Fig. 1 is a flowchart illustrating an indicating method of inter-frequency information applied to a first access network node side according to an embodiment of the present invention;

fig. 2 shows a schematic diagram of an initialization process for a slice list of a second access network node;

fig. 3 shows a schematic flow diagram of the interaction between a second access network node and a first access network node when the second access network node actively sends a slice list;

fig. 4 shows a schematic view of a slice list update procedure of a slice source cell;

fig. 5 shows a schematic diagram of a slice list update procedure for a slice cooperation cell;

fig. 6 is a schematic diagram showing a specific flow of dynamic change of other system information of the slice cooperation cell;

fig. 7 is a schematic diagram illustrating a specific implementation process of acquiring pilot frequency broadcast information by a terminal through other broadcast messages;

fig. 8 shows a block schematic diagram of a first access network node of an embodiment of the invention;

fig. 9 is a diagram illustrating a structure of a first access network node according to an embodiment of the present invention;

fig. 10 is a flowchart illustrating an indicating method of inter-frequency information applied to a second access network node side according to an embodiment of the present invention;

fig. 11 shows a block schematic diagram of a second access network node of an embodiment of the invention;

fig. 12 is a diagram illustrating a structure of a second access network node according to an embodiment of the present invention;

fig. 13 is a flowchart illustrating an indicating method of pilot frequency information applied to a node side of a core network according to an embodiment of the present invention;

fig. 14 is a block diagram of a core network node according to an embodiment of the present invention;

fig. 15 is a diagram showing a structure of a core network node according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

First, inter-frequency cell reselection and handover in LTE are briefly described as follows.

LTE inter-frequency cell reselection

The mechanism is as follows: the pilot frequency cell reselection comprises two parts of pilot frequency reselection measurement and pilot frequency reselection execution criterion judgment

Process 1: inter-frequency cell reselection measurement

Performing different-frequency cell reselection measurement on an E-UTRAN frequency point or a different system frequency point with higher priority than an Evolved Universal Radio Access Network (E-UTRAN) frequency point;

for the frequency points of the E-UTRAN frequency points which are equal to or lower than the priority of the current frequency points of the E-UTRAN frequency points or the frequency points of the different systems which are lower than the priority of the current frequency points of the E-UTRAN frequency points, if the service cells simultaneously meet the Srxlev>S_{nonIntraSearchP}And Squal>S_{nonIntraSearchQ}If the frequency point is not in the E-UTRAN frequency point or the inter-system frequency point measurement equal to or lower than the priority of the current E-UTRAN frequency point, the E-UTRAN different frequency measurement is not performed unless User Equipment (UE, also called as a terminal) is triggered by redirection information; if Srxlev cannot be satisfied simultaneously>S_{nonIntraSearchP}And Squal>S_{nonIntraSearchQ}And if the condition is satisfied, the terminal needs to perform E-UTRAN frequency point or inter-system frequency point measurement equal to or lower than the priority of the current E-UTRAN frequency point.

And (2) a process: pilot frequency reselection execution criterion determination

For E-UTRAN frequency points or different system frequency points with higher priority than the current E-UTRAN frequency points, executing different frequency reselection when the following criteria are met:

a1, at time Treselection_RATThe cells of E-UTRAN frequency points or different system frequency points with high priority always meet Srxlev>Thresh_X,HighP；

A2, the terminal resides in the current cell for more than 1 second.

And for the pilot frequency cells with the same priority, sorting the cells according to an R criterion, and selecting the best cell for pilot frequency switching.

For E-UTRAN frequency points or different system frequency points with lower priority than the current E-UTRAN frequency points, executing different frequency reselection when the following criteria are met:

b1, at time Treselection_RATInner and outer serving cell Srxlev<Thresh_Serving,LowPAnd the E-UTRAN frequency point or different system frequency point cell with low priority always satisfies Srxlev>Thresh_X,LowP；

B2, the terminal resides in the current cell for more than 1 second.

Second, LTE inter-frequency cell handover

The terminal measures the quality of the surrounding pilot frequency cells according to the measurement configuration of the service cell and reports the quality to the service cell according to a certain rule, the service cell receiving the measurement report of the terminal judges the proper pilot frequency switching cell according to the information of the link quality of the pilot frequency adjacent cell and the like in the report and initiates a switching request to a target cell, and once the target cell passes the switching request and informs the service cell, the service cell informs the terminal of switching the pilot frequency cell.

Pilot frequency Information broadcast in a System Information Block (SIB) of LTE System

The LTE SIB5 broadcasts the inter-frequency cell list and the frequency point priority information. The idle terminal can read the pilot frequency cell list and the frequency point priority information from the service cell broadcast, thereby completing the pilot frequency cell reselection process according to the LTE pilot frequency cell reselection step.

The invention provides a pilot frequency information indicating method, an access network node and a core network node, aiming at the problem that the subsequent terminal reselection or switching process is influenced and the network communication reliability cannot be ensured because the terminal side does not know the slice support condition of a pilot frequency adjacent cell.

As shown in fig. 1, the method for indicating inter-frequency information according to the embodiment of the present invention is applied to a first access network node where a first cell is located, and includes:

step 11, receiving configuration information related to a slice of a second cell sent by a second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

It should be noted that, in this embodiment, the first cell is a serving cell or a camping cell of the terminal; the second cell is a pilot frequency adjacent cell of the first cell, and under a normal condition, the first cell and the second cell belong to cells under different access network nodes; the Access network Node in this embodiment may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

It should be noted that the second cell may include multiple supported frequency points, and each frequency point may correspond to multiple slices, so to explicitly tell which frequency points and slices the terminal specifically has, the configuration information should include the frequency points supported by the second cell and the slices corresponding to the frequency points, and because the frequency points supported by the second cell may be multiple, the configuration information should also include frequency point priority information in order to indicate the priorities of different frequency points; it should be noted that, although some slices are not among slices directly supported by the local cell, an operator or a core network may specify which slices not directly supported by the local cell may be mapped to which slices directly supported by the local cell, and when the above situations exist, the configuration information should include a slice mapping rule. It should be further noted that the frequency points supported by the second cell and the slice information corresponding to the frequency points generally exist in the form of a slice list, and the slice list may implicitly or explicitly indicate slice priority information; the implicit indication refers to that the slices in the slice list are sorted in a priority order, for example, sorted in a descending order or sorted in an ascending order according to the slice priority; explicit indication means that each slice corresponds to an explicit priority flag indicating the priority of the slice.

Further, the specific implementation manner of step 11 is: when determining that the configuration information interaction can be carried out between the first access network node and the second access network node, receiving configuration information related to the slice of the second cell sent by the second access network node;

It should be noted that the configuration information may be actively sent by the second access network node to the first access network node, that is, when the second access network node obtains the relevant configuration of the core network side, the configuration information is actively sent to the first access network node; the configuration information may also be requested to be sent by the first access network node, that is, the first access network node sends the request message first, and then the second access network node feeds back the configuration information to the first access node according to the request message.

Specifically, the manner for the second access network node to obtain the configuration information is as follows: firstly, receiving slice information which is actively sent by a core network node and supported by a network in a preset time window; or receiving the slice information supported by the network, which is sent by the core network node in a preset time window based on the slice information acquisition request of the second access network node; then, according to the slice information, acquiring configuration information related to slices supported by a second cell; finally, the second access network node sends the configuration information to the first access network node where the first cell is located; in general, the second access network node also needs to store the configuration information after acquiring the configuration information.

In practical application, the initialization process of the frequency point supported by the second cell (i.e. the slice source cell, herein, the cell providing the slice information supported by the inter-frequency neighboring cell is referred to as the slice source cell, and the cell receiving and storing the slice information supported by the inter-frequency neighboring cell is referred to as the slice cooperative cell, and the above-mentioned first cell is referred to as the slice cooperative cell) and the slice information corresponding to the frequency point in the configuration information of the second access network node and the first access network node is described below, first, it needs to be described that the slice source cell generates a slice list supported by itself in the local cell fixed storage unit according to the network slice information provided by one or more core networks connected to the slice source cell and the slice service priority policy of the operator; then, the access network node where the Slice source cell is located sends a Slice List Copy send Request (Slice List Copy Request) message through an Xn interface (i.e. an interface used for communication between two access network nodes), copies the Slice List supported by the local service to each neighboring inter-frequency cell, and stores the Slice List in a respective dedicated storage unit of the inter-frequency cell. It should be noted that the network-side slicing service prioritization principle is implemented by a network-side policy determined by an operator.

As shown in fig. 2, the initialization process of the frequency point supported by the second cell of the second access network node and the slice information (hereinafter referred to as a slice list) corresponding to the frequency point specifically includes:

step A1, the second access network node sends a slice information acquisition request to the core network node;

step A2, the core network node feeds back a slice information acquisition request response to the second access network node;

step A3, the core network node sends the slice information to the second access network node;

and step A4, the second access network node sends the slice information sending completion confirmation information to the core network node.

And the second access network node sets a slice list of slice types supported by the slice source cell through the slice information notified by the core network node connected with the second access network node.

As shown in fig. 3, when the second access network node actively sends the slice list, the interaction flow between the second access network node and the first access network node is as follows:

step B1, the second access network node sends a list copy sending request to the first access network node;

it should be noted that, in this case, the second access network node has already set the slice list supported by the slice source cell according to the slice information notified by the core network, and the list copy sending request includes the cell ID information, and it should be noted that, if there are a plurality of inter-frequency neighboring cells of the second cell, the second access network node may respectively send the list copy sending requests to different first access network nodes.

Step B2, the first access network node copies the feedback list and sends the request response to the second access network node;

it should be noted that the list copy sending request response carries ID information of the slice source cell of the first access network node.

Step B3, the second access network node sends the slice list to the first access network node;

it should be noted that, when the second access network node sends the slice list, it needs to carry ID information of the second cell, and also sends the frequency point priority information and a possible slice mapping rule to the first access network node.

Step B4, the first access network node feeds back the slice list and sends the completed confirmation information to the second access network node;

it should be noted that, when the acknowledgement information is transmitted, ID information of the slice cooperation cell should be carried.

It should be further noted that the messages in step B1 and step B3 do not contain any indication information of the operator slice priority policy provided by the slice source cell, and the original slice list copy provided by the slice source cell already implicitly contains the operator slice priority policy. Since the slice list has the same complete version between the slice source cell and the slice cooperating cell, the slice list supports the index lookup function, and the process may contain a slice mapping rule, which may be indicated to the network side (i.e. the second access network node) by the core network or a rule formulated by the network side itself.

It should be noted that, after receiving the configuration information, the first access network node may obtain the system broadcast message according to the configuration information, and specifically, generate a second preset domain in the system broadcast message according to the configuration information, where the second preset domain exists in the minimum system broadcast message or in other broadcast messages except the minimum system broadcast message.

It should be noted that, the second preset domain is a transmission resource separately allocated for the first access network node to send the configuration information; the second preset domain may be actively broadcast to the terminal by the first access network node in the minimum system broadcast message, or may be broadcast to the terminal in other broadcast messages except the minimum system broadcast message according to an active request of the terminal.

It should be noted that, after receiving the configuration information, the first access network node needs to store the configuration information for subsequent use.

As the operation of the network and the policy of the operator change, the configuration information also changes, so that the method for indicating frequency information according to the embodiment of the present invention, after step 11, further includes:

updating the configuration information according to the updating indication;

Note that, the update instruction includes: when the first update information of the frequency point supported by the second cell and the slice information corresponding to the frequency point is the first update information, the first update information includes indication information for indicating to add slices and/or delete slices, and in order to reduce the overhead of resources in information transmission, the indication information carries identification information of slices (because the slice information generally exists in the form of a slice list, and the slice list supports the function of corner mark index, that is, each slice can be represented by a corresponding index, and the identification information of the slice here is an index for distinguishing different slices), and the identification information is used for indicating to add and/or delete slices.

It should be noted that, the update to the slice includes not only the addition and/or deletion of the slice, but also the update of the slice priority in the frequency point, so the update instruction includes: when the frequency point supported by the second cell and the first updating information of the slice information corresponding to the frequency point are the first updating information, the first updating information also comprises indication information for updating the slice priority in the preset frequency point. The instruction information is used to instruct the change of the slice priority, and specifically, may be the priority level after the slice change, or may be information of all the slice priorities after the slice priority change.

It should be further noted that, in the update instruction, the following is included: when second updating information of frequency point priority information and/or third updating information of a slice mapping rule are/is acquired, the second updating information and/or the third updating information are/is acquired according to at least one of change of an operator strategy and change of network load; that is, a change in the operator policy and/or a change in the network load may cause an update of the frequency point priority information, and a change in the operator policy and/or a change in the network load may also cause an update of the slice mapping rule.

Since the update of the configuration information may be the update of the frequency point supported by the second cell and the slice information corresponding to the frequency point, the update of the priority information of the frequency point, or the update of the slice mapping rule, the following specifically describes the update process from different update triggering manners, respectively.

If the network slice type of the core network side is increased or reduced, the core network node needs to inform each access network node connected with the core network node of the operation of updating the network slice type of the access network side, and after the slice list stored locally in the access network node is updated, each pilot frequency adjacent cell needs to be informed of updating the slice list.

As shown in fig. 4, the slice list updating process of the slice source cell specifically includes:

step C1, the core network node sends a slice type updating notification request to the second access network node;

step C2, the second access network node sends a slice type update notification request response to the core network node;

step C3, the core network node sends the slice type updating notice to the second access network node;

and step C4, the second access network node feeds back a slice type updating notice and sends a finished confirmation message to the core network node.

After that, the second access network node updates the slice list supported by the slice source cell through the slice type updating information notified by the core network node connected with the second access network node.

As shown in fig. 5, the slice list updating process of the slice cooperation cell specifically includes:

step D1, the second access network node sends a slice type updating notification request to the first access network node;

step D2, the first access network node feeds back a slice type updating notification request response to the second access network node;

step D3, the second access network node sends a slice type update notification to the first access network node;

and D4, the sending of the slice type updating notice is completed, and the first access network node feeds back a confirmation message to the second access network node.

The first access node then informs the local slice list (i.e., the slice list of the slice cooperating cells) based on the update sent by the second access network.

It should be noted that, in the message sent in step D1, a bit of information is included to indicate whether the message is a slice adding operation or a slice deleting operation.

Secondly, in the LTE system, the frequency point priority is a parameter associated with an operator frequency point layout strategy and cell load balancing, and in the LTE system, the pilot frequency point priority is broadcast in SIB 5. In the context of the NR slicing technique, it is still desirable to retain the characteristic that the LTE inter-frequency point priority reflects the load condition of the frequency point, and meanwhile, a semi-static slicing priority policy formulated by an operator is used to assist a serving cell in performing inter-frequency cell reselection or inter-frequency cell handover for a terminal. A network initializes a slice service support list generated in a slice source cell and is statically stored in the slice source cell and a slice cooperation cell, and a core network side network slice changes the static slice service support list stored in the slice source cell and the slice cooperation cell simultaneously in the processes of slice source cell list updating and slice cooperation cell list updating initiated by the slice change; the updating process of the different-frequency slice cooperation cell list initiated by the change of the slice priority strategy of the slice source cell operator or the change of the frequency point priority of the slice source cell is a temporary variable strategy, the temporary change strategy is only used for dynamically indicating the different-frequency cell slice service support list information broadcasted by the cell in other system information (other SI) so as to optimize the different-frequency cell reselection or the different-frequency cell switching process of the terminal based on the slice service, and the local static slice list generated by the initialization or the updating of the different-frequency slice cooperation cell list initiated by the change of the slice priority strategy of the slice source cell operator or the change of the frequency point priority of the slice source cell is not changed.

As shown in fig. 6, the specific process of dynamically changing other system information of the slice cooperation cell is as follows:

step E1, the second access network node sends a broadcast strategy change notification request to the first access network node;

step E2, the first access network node feeds back a broadcast strategy change notification request response to the second access network node;

step E3, the second access network node sends a broadcast strategy change notice to the first access network node;

and E4, after the reception of the broadcast strategy change notice is completed, feeding back a confirmation message to the second access network node.

The second access network node updates the information in the inter-frequency broadcast based on the broadcast policy change notification.

It should be noted that the policy change information in step E3 includes three aspects, that is, the updated frequency point priority value reflects the usage status of the pilot frequency resource, and is mainly used for reflecting the load information of the pilot frequency overall resource; second, the slice temporary priority indication information which is made by the operator and used for temporarily changing the inter-frequency slice service support list broadcasted in other system information (other SI) of the slice cooperation cell, this priority information is different from the implicit slice priority in the static slice service support list and only temporarily active, because the static slice service support list in the slice cooperative cell is completely consistent with the source slice cell, the slice temporary priority indication information in the step E3 can support the index indication of the corner mark, and then the upper slice source cell adopts the strategy of event triggering periodic reporting to perform the interaction of the slice temporary priority indication information with the slice cooperative cell, the overhead of the Xn interface is not very large either, third, the process may contain inter-frequency neighbor slice mapping rules, the rule may be indicated to the network side by the core network, or may be a rule formulated by the network side itself. It should be noted that the slice temporary priority information indicated in step E3 by the slice source cell is a policy related to the slicing of the operator, for example, the operator divides a resource usage amount for the slice service supported by each slice source cell, and if the resource usage amount for a certain slice is greater than a certain threshold, the slice service priority is reduced to the lowest level and temporary priority indication information is sent to the slice cooperation cell, so that the slice cooperation cell does not broadcast the slice service in the pilot frequency slice service support list area of its otherSI, thereby avoiding the terminal performing an inappropriate pilot frequency cell reselection or pilot frequency cell handover process.

As shown in fig. 7, after the first access network node updates the information in the pilot frequency broadcast based on the broadcast policy change notification, the specific implementation process of the terminal acquiring the pilot frequency broadcast information through other broadcast messages is as follows:

step F1, the terminal sends a random access lead code to the first access network node;

step F2, the first access network node feeds back a random access response to the terminal;

step F3, the terminal sends other system information request indicator to the first access network node;

step F4, the first access network node broadcasts other system information;

and after receiving the other broadcasted system information, the terminal reselects the pilot frequency cell according to the system information.

From the perspective of the terminal, the pilot frequency slice broadcast optimization strategy is applicable to an idle state, an inactive state or a connected state, wherein the idle state terminal can make a more optimized pilot frequency cell reselection execution judgment by combining pilot frequency cell slice support information broadcast in the serving cell Other SI and a self slice service requirement; the terminal can obtain the inter-frequency cell slice support information in the serving cell Other SI through a dedicated signaling in an inactive state or a connected state, the inactive state terminal can more accurately complete the inter-frequency cell reselection, the RNA process, and the connection recovery process, and the connected state terminal can also accurately complete the inter-frequency cell handover process.

According to the embodiment of the invention, the configuration information related to the slice of the pilot frequency adjacent cell is obtained, so that the subsequent cell reselection or switching process of the terminal can be carried out according to the configuration information.

As shown in fig. 8, an embodiment of the present invention provides a first access network node 80, where a first cell is divided in the first access network node 80; the method comprises the following steps:

a first receiving module 81, configured to receive configuration information related to a slice of a second cell sent by a second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the first receiving module 81 is configured to:

Optionally, the first access network node 80 further includes:

and the storage module is used for storing the configuration information.

Optionally, the first access network node 80 further includes:

Specifically, the update indication includes: when a frequency point supported by a second cell and first update information of slice information corresponding to the frequency point are included, the first update information includes indication information for indicating to add slices and/or delete slices, the indication information carries identification information of the slices, and the identification information is used for indicating to add and/or delete the slices.

Specifically, the update indication includes: and when the frequency point supported by the second cell and the first updating information of the slice information corresponding to the frequency point are the first updating information, the first updating information comprises indication information for updating the slice priority in the preset frequency point.

Specifically, the update indication includes: and when second updating information of the frequency point priority information and/or third updating information of the slice mapping rule are/is acquired according to at least one of the change of the operator strategy and the change of the network load.

Optionally, the first access network node 80 further includes:

It should be noted that, the first access network node embodiment is a first access network node corresponding to the above-mentioned pilot method embodiment applied to the inter-frequency information at the first access network node side in a one-to-one manner, and all implementation manners in the above-mentioned method embodiment are applicable to this first access network node embodiment, and the same technical effect can also be achieved.

As shown in fig. 9, an embodiment of the present invention further provides a first access network node 90, which includes a processor 91, a transceiver 92, a memory 93, and a computer program stored on the memory 93 and operable on the processor 91; the transceiver 92 is connected with the processor 91 and the memory 93 through a bus interface, and a first cell is divided in the first access network node; wherein the transceiver 92 is under the control of the processor 91, configured to perform the following processes:

receiving, by the transceiver 92, configuration information related to a slice of the second cell sent by the second access network node;

the second cell is a pilot frequency adjacent cell of the first cell.

It should be noted that in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 91 and various circuits of memory represented by memory 93 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 92 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 91 is responsible for managing the bus architecture and general processing, and the memory 93 may store data used by the processor 91 in performing operations.

and storing the configuration information.

updating the configuration information according to the updating indication;

According to the first access network node of the embodiment of the invention, the terminal can perform the subsequent cell reselection or switching process according to the configuration information by acquiring the configuration information related to the slice of the pilot frequency adjacent cell, so that the reliability of network communication is ensured, and the power consumption of the terminal is reduced.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the indication method applied to the inter-frequency information on the first access network node side.

As shown in fig. 10, an embodiment of the present invention further provides an indicating method of pilot frequency information, which is applied to a second access network node where a second cell is located, and includes:

step 101, receiving network supported slice information sent by a core network node;

102, acquiring configuration information related to slices supported by a second cell according to the slice information;

step 103, sending the configuration information to a first access network node where a first cell is located;

the second cell is a pilot frequency adjacent cell of the first cell.

Optionally, after the step of obtaining the configuration information about the slices supported by the second cell according to the slice information, the method further includes:

and storing the configuration information.

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

In the above embodiment, all descriptions regarding the second access network node side are applicable to the embodiment of the indication method applied to the pilot frequency information of the second access network node, and the same technical effect as that of the above embodiment can be achieved.

As shown in fig. 11, an embodiment of the present invention provides a second access network node 110, where a second cell is divided in the second access network node; the method comprises the following steps:

a third receiving module 111, configured to receive slice information supported by a network and sent by a core network node;

a first obtaining module 112, configured to obtain, according to the slice information, configuration information related to a slice supported by the second cell;

a first sending module 113, configured to send the configuration information to a first access network node where a first cell is located;

the second cell is a pilot frequency adjacent cell of the first cell.

Further, the third receiving module 111 is configured to:

Optionally, the second access network node 110 further includes:

It should be noted that, the second access network node embodiment is a second access network node corresponding to the above-mentioned pilot method embodiment applied to the inter-frequency information at the second access network node side in a one-to-one manner, and all implementation manners in the above-mentioned method embodiment are applicable to this second access network node embodiment, and the same technical effect can also be achieved.

As shown in fig. 12, an embodiment of the present invention further provides a second access network node 120, which includes a processor 121, a transceiver 122, a memory 123, and a computer program stored on the memory 123 and executable on the processor 121; the transceiver 122 is connected to the processor 121 and the memory 123 through a bus interface, and a second cell is divided in the second access network node; wherein the transceiver 122 is under the control of the processor 121, and is configured to perform the following processes:

receiving, by the transceiver 122, network-supported slice information sent by the core network node;

sending the configuration information to a first access network node in which the first cell is located through the transceiver 122;

the second cell is a pilot frequency adjacent cell of the first cell.

It should be noted that in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 121 and various circuits of memory represented by memory 123 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 122 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 121 is responsible for managing a bus architecture and general processing, and the memory 123 may store data used by the processor 121 when performing operations.

and storing the configuration information.

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

The second access network node of the embodiment of the invention can ensure that the subsequent cell reselection or switching process of the terminal can be carried out according to the configuration information by sending the configuration information related to the slice of the pilot frequency adjacent cell, thereby ensuring the reliability of network communication and reducing the power consumption of the terminal.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the indication method applied to the inter-frequency information on the second access network node side.

As shown in fig. 13, an embodiment of the present invention further provides a method for indicating inter-frequency information, which is applied to a core network node, and includes:

step 131, sending the slice information supported by the network to the second access network node.

In the above embodiments, all descriptions regarding the core network node side are applicable to the embodiment of the indication method applied to the inter-frequency information of the core network node, and the same technical effect as that of the above embodiment can be achieved.

As shown in fig. 14, the core network node 140 according to the embodiment of the present invention includes:

a third sending module 141, configured to send the network-supported slice information to the second access network node.

Further, the core network node 140 further includes:

It should be noted that, the core network node embodiment is a core network node corresponding to the above-mentioned pilot method embodiment applied to the inter-frequency information at the core network node side, and all implementation manners in the above-mentioned method embodiment are applicable to the embodiment of the core network node, and the same technical effect can be achieved.

As shown in fig. 15, an embodiment of the present invention further provides a core network node 150, which includes a processor 151, a transceiver 152, a memory 153, and a computer program stored on the memory 153 and operable on the processor 151; the transceiver 152 is connected to the processor 151 and the memory 153 through a bus interface, and a second cell is divided in the second access network node; wherein the transceiver 152 is under the control of the processor 151, and is configured to perform the following processes:

the network supported slice information is transmitted to the second access network node via the transceiver 152 via the transceiver.

It should be noted that in FIG. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 151 and various circuits of memory represented by memory 153 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 152 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 151 is responsible for managing a bus architecture and general processing, and the memory 153 may store data used by the processor 151 in performing operations.

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the indicating method applied to the inter-frequency information on the node side of the core network.

While the preferred embodiments of the present invention have been described, 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 following claims.

Claims

1. A method for indicating inter-frequency information is applied to a first access network node where a first cell is located, and the method includes:

the second cell is a pilot frequency adjacent cell of the first cell;

the configuration information includes: frequency points supported by a second cell, and slice information and frequency point priority information corresponding to the frequency points; or

the frequency point supported by the second cell and the slice information corresponding to the frequency point implicitly or explicitly indicate the slice priority information;

after the step of receiving the configuration information related to the slice of the second cell sent by the second access network node, the method further includes:

updating the configuration information according to the updating indication;

2. The method for indicating inter-frequency information according to claim 1, wherein the step of receiving the configuration information related to the slice of the second cell sent by the second access network node comprises:

3. The method for indicating inter-frequency information according to claim 1, wherein after the step of receiving the configuration information related to the slice of the second cell sent by the second access network node, the method further comprises:

and storing the configuration information.

4. The method according to claim 1, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes indication information for indicating to add a slice and/or delete a slice, and the indication information carries identification information of a slice, and the identification information is used for indicating to add and/or delete a slice.

5. The method according to claim 1, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes an indication information for updating a slice priority in a preset frequency point.

6. The method for indicating inter-frequency information according to claim 1, wherein when the update indication includes second update information of frequency point priority information and/or third update information of a slice mapping rule, the second update information and/or the third update information is obtained according to at least one of a change in an operator policy and a change in a network load.

7. The method for indicating inter-frequency information according to claim 1, wherein after the step of receiving the configuration information related to the slice of the second cell sent by the second access network node, the method further comprises:

8. A method for indicating inter-frequency information is applied to a second access network node where a second cell is located, and the method includes:

the second cell is a pilot frequency adjacent cell of the first cell;

after the step of sending the configuration information to the first access network node where the first cell is located, the method further includes:

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

9. The method for indicating inter-frequency information according to claim 8, wherein the step of receiving the slice information supported by the network and sent by the core network node comprises:

10. The method for indicating inter-frequency information according to claim 8, further comprising, after the step of obtaining the slice-related configuration information supported by the second cell according to the slice information:

and storing the configuration information.

11. The method according to claim 8, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes indication information for indicating to add a slice and/or delete a slice, and the indication information carries identification information of a slice, and the identification information is used for indicating to add and/or delete a slice.

12. The method according to claim 8, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes an indication information for updating a slice priority in a preset frequency point.

13. The method for indicating inter-frequency information according to claim 8, wherein when the update indication includes second update information of frequency point priority information and/or third update information of a slice mapping rule, the second update information and/or the third update information is obtained according to at least one of a change in an operator policy and a change in a network load.

14. A first access network node comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, and having a first cell partitioned therein; wherein the processor is configured to read a program in the memory and execute the following processes:

the second cell is a pilot frequency adjacent cell of the first cell;

the processor is used for reading the program in the memory and executing the following processes:

updating the configuration information according to the updating indication;

15. The first access network node of claim 14, wherein the processor is configured to read a program in memory and perform the following process:

16. The first access network node of claim 14, wherein the processor is configured to read a program in memory and perform the following process:

and storing the configuration information.

17. The first access network node according to claim 14, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes indication information for indicating to add a slice and/or delete a slice, and the indication information carries identification information of a slice, and the identification information is used for indicating to add and/or delete a slice.

18. The first access network node according to claim 14, wherein when the update indication includes a first update information of a frequency point supported by a second cell and slice information corresponding to the frequency point, the first update information includes an indication information for updating a slice priority in a preset frequency point.

19. The first access network node according to claim 14, wherein when the update indication includes second update information of frequency point priority information and/or third update information of a slice mapping rule, the second update information and/or the third update information is obtained according to at least one of a change in an operator policy and a change in a network load.

20. The first access network node of claim 14, wherein the processor is configured to read a program in memory and perform the following process:

21. 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 method for indicating inter-frequency information according to any one of claims 1-7.

22. A first access network node, wherein a first cell is divided in the first access network node; it is characterized by comprising:

the second cell is a pilot frequency adjacent cell of the first cell;

further comprising:

23. The first access network node of claim 22, wherein the first receiving module is configured to:

24. The first access network node of claim 22, further comprising:

and the storage module is used for storing the configuration information.

25. The first access network node of claim 22, further comprising:

26. A second access network node comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, and having a second cell partitioned therein; wherein the processor is configured to read a program in the memory and execute the following processes:

the second cell is a pilot frequency adjacent cell of the first cell;

acquiring an update instruction of the configuration information;

sending the update indication to the first access network node;

27. The second access network node of claim 26, wherein the processor is configured to read a program stored in the memory and perform the following process:

28. The second access network node of claim 26, wherein the processor is configured to read a program stored in the memory and perform the following process:

and storing the configuration information.

29. The second access network node according to claim 26, wherein when the update indication includes a first update information of a frequency point supported by the second cell and slice information corresponding to the frequency point, the first update information includes indication information for indicating to add a slice and/or delete a slice, and the indication information carries identification information of a slice, and the identification information is used for indicating to add and/or delete a slice.

30. The second access network node according to claim 26, wherein when the update indication includes a first update information of a frequency point supported by the second cell and slice information corresponding to the frequency point, the first update information includes an indication information for updating a slice priority in a preset frequency point.

31. The second access network node of claim 26, wherein when the update indication includes second update information of frequency point priority information and/or third update information of a slice mapping rule, the second update information and/or the third update information are obtained according to at least one of a change in an operator policy and a change in a network load.

32. 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 method for indicating inter-frequency information according to any one of claims 8-13.

33. A second access network node, wherein a second cell is divided in the second access network node; it is characterized by comprising:

the second cell is a pilot frequency adjacent cell of the first cell;

further comprising:

34. The second access network node of claim 33, wherein the third receiving module is configured to:

35. The second access network node of claim 33, further comprising: