CN114143913B

CN114143913B - Paging method and device

Info

Publication number: CN114143913B
Application number: CN202111321216.4A
Authority: CN
Inventors: 杨璐; 邬月萍; 陈翔; 招溢利
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2024-01-19
Anticipated expiration: 2038-01-11
Also published as: CN110035497B; CN110035497A; CN114143914B; WO2019136910A1; CN114143913A; CN114143914A

Abstract

The invention discloses a paging method, which comprises the following steps: the core network receives the paging failure message of the wireless access network from the anchor base station; the core network responds to the wireless access network paging failure message to reserve the context of the paged user equipment, informs other base stations in the tracking area except the base station in the notification area where the anchor base station is located to execute the core network paging, and does not inform the base station in the notification area where the anchor base station is located to conduct the core network paging, wherein the core network paging comprises sending the core network paging message for multiple times, the core network paging message comprises the core network identification of the user equipment, the wireless access network paging comprises sending the wireless access network paging message for multiple times, and the wireless access network paging message comprises the access network identification of the user equipment. The invention also discloses a paging device. By the method, signaling overhead and processing overhead can be reduced.

Description

Paging method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a paging method and apparatus.

Background

In the New Radio (NR), the User Equipment (UE) has three states, a Radio resource control (Radio Resource Control, RRC) CONNECTED state, an RRC INACTIVE (rrc_inactive) state, and an RRC IDLE (rrc_idle) state.

The UE in rrc_inactive state still has a Core Network (CN) -radio access Network (Radio Access Network, RAN) connection relation, and a base station that maintains the CN-RAN connection relation of the UE and stores the UE context (context) is called an anchor base station, which is responsible for configuring a notification area for the UE. Meanwhile, the core network regards the UE in the rrc_inactive state as an evolved packet system (Evolved Packet System, EPS) connection management (EPS Connection Management, ECM) connection state, meaning that the core network considers the UE to be connected to the anchor base station. Thus, if there is downlink data, the core network transmits the downlink data to the anchor base station, and then the anchor base station performs RAN-initiated paging (hereinafter referred to as radio access network paging or RAN paging) and notifies the base station in the notification area to perform radio access network paging to page the UE in the notification area.

As shown in fig. 1, the flow chart of successful paging of the radio access network shows that the UE receives the RAN paging message from the target base station, i.e., the base station where the UE currently resides, in the rrc_inactive state; the UE then sends message 1 to the target base station: random access preamble (preamble); the target base station sends message 2 to the UE: a random access response; the UE sends message 3 to the target base station: the RRC connection recovery request, message 3 includes the Access network identifier (RAN UE ID) of the UE, and the cause value (cause value) is set as paging response (mt-Access); since the target base station in the figure is not an anchor base station, the UE context needs to be retrieved from the anchor base station, and if the target base station is an anchor base station, the process of retrieving the UE context can be omitted; the target base station sends a message 4 to the UE: RRC connection recovery; the UE then changes from rrc_inactive to rrc_connected. The paging procedure of the anchor base station is not shown in fig. 1.

In the prior art, if radio access network paging of all base stations in a notification area fails, an anchor base station notifies a core network that UE cannot be found in the notification area and instructs the core network to release UE context, then the core network releases UE context, and uses the UE as an ECM idle state and notifies all base stations in a Tracking Area (TA) to perform paging initiated by the core network (hereinafter referred to as core network paging), where TA is greater than the notification area. If a paging message of the core network is received, the UE automatically enters an RRC_IDLE state to avoid state mismatch, and then establishes a connection with a base station paging the core network in response to the paging message initiated by the core network, and changes from RRC_IDLE to RRC_CONNECTED. In the process of establishing a connection, the core network needs to reconstruct the context of the UE, modify the bearer for the UE, and the specific process is shown in fig. 2.

It can be seen that the UE found by paging through the core network after the radio access network page fails needs to go from rrc_inactive to rrc_idle and then to rrc_connected, and signaling overhead and processing overhead are significantly increased compared to the UE found by paging through the radio access network going directly from rrc_inactive to rrc_connected.

Disclosure of Invention

The invention mainly solves the technical problem of providing a paging method and a paging device, which can solve the problem of obvious increase of core network paging signaling overhead and processing overhead after the paging failure of a radio access network in the prior art.

In order to solve the above technical problems, the present invention provides a paging method, which includes: the core network receives the paging failure message of the wireless access network from the anchor base station; the core network responds to the wireless access network paging failure message to reserve the context of the paged user equipment, informs other base stations in the tracking area except the base station in the notification area where the anchor base station is located to execute the core network paging, and does not inform the base station in the notification area where the anchor base station is located to conduct the core network paging, wherein the core network paging comprises sending the core network paging message for multiple times, the core network paging message comprises the core network identification of the user equipment, the wireless access network paging comprises sending the wireless access network paging message for multiple times, and the wireless access network paging message comprises the access network identification of the user equipment.

In order to solve the above technical problems, the present invention provides a paging device, which includes a processor and a communication circuit, where the processor is connected to the communication circuit, and the processor is configured to execute instructions to implement any one of the foregoing methods.

In order to solve the above technical problem, the present invention provides a paging device, which stores instructions that when executed implement any one of the methods described above.

The beneficial effects of the invention are as follows: when the core network receives the radio access network paging failure message from the anchor base station, only other base stations in the tracking area except the base station in the notification area where the anchor base station is located are notified to execute the core network paging, and the base station in the notification area where the anchor base station is located is not notified to execute the core network paging. Therefore, the process of paging the core network by the base station in the notification area where the anchor base station is located is omitted, meanwhile, the probability of paging failure of the wireless access network is reduced, and signaling overhead and processing overhead are reduced.

Drawings

Fig. 1 is a schematic flow diagram of successful paging in a radio access network in the prior art;

fig. 2 is a schematic flow chart of successful paging of a core network after paging failure of a radio access network in the prior art;

FIG. 3 is a flow chart of a first embodiment of the paging method of the present invention;

FIG. 4 is a flow chart of a second embodiment of the paging method of the present invention;

fig. 5 is a flow chart of a third embodiment of the paging method of the present invention;

fig. 6 is a flow chart of a fourth embodiment of the paging method of the present invention;

fig. 7 is a schematic flow chart of S29 in fig. 6 in the case that the target base station itself matches the CN UE ID and the RAN UE ID of the user equipment;

Fig. 8 is a schematic flow chart of S29 in fig. 6 in the case that the anchor base station matches the CN UE ID and the RAN UE ID of the user equipment;

fig. 9 is a flow chart of a fifth embodiment of the paging method of the present invention;

fig. 10 is a flowchart of a sixth embodiment of the paging method of the present invention;

FIG. 11 is a flow chart of a seventh embodiment of the paging method of the present invention;

fig. 12 is a flow chart of an eighth embodiment of the paging method of the present invention;

fig. 13 is a flow chart of a ninth embodiment of the paging method of the present invention;

fig. 14 is a flow chart of a tenth embodiment of the paging method of the present invention;

fig. 15 is a flow chart of an eleventh embodiment of the paging method of the present invention;

fig. 16 is a flow chart of a twelfth embodiment of the paging method of the present invention;

FIG. 17 is a flow chart of a thirteenth embodiment of the paging method of the present invention;

FIG. 18 is a flow chart of a fourteenth embodiment of a paging method of the present invention;

fig. 19 is a flowchart of a fifteenth embodiment of the paging method of the present invention;

FIG. 20 is a flow chart of a sixteenth embodiment of the paging method of the present invention;

FIG. 21 is a flow chart of a seventeenth embodiment of the paging method of the present invention;

FIG. 22 is a flow chart of an eighteenth embodiment of a paging method of the present invention;

Fig. 23 is a flow chart of a nineteenth embodiment of the paging method of the present invention;

FIG. 24 is a flow chart of a twentieth embodiment of a paging method of the present invention;

fig. 25 is a flow chart of a twenty-first embodiment of the paging method of the present invention;

fig. 26 is a flow chart of a twenty-second embodiment of the paging method of the present invention;

fig. 27 is a schematic flow chart of a twenty-third embodiment of a paging method of the present invention;

fig. 28 is a flow chart of a twenty-fourth embodiment of the paging method of the present invention;

fig. 29 is a flow chart of a twenty-fifth embodiment of the paging method of the present invention;

fig. 30 is a schematic view of the structure of the first embodiment of the paging device of the present invention;

fig. 31 is a schematic view of the structure of a second embodiment of the paging device of the present invention;

fig. 32 is a schematic structural view of a third embodiment of the paging device of the present invention;

fig. 33 is a schematic view of the structure of a fourth embodiment of the paging device of the present invention;

fig. 34 is a schematic view showing the structure of a fifth embodiment of the paging device of the present invention;

fig. 35 is a schematic view of the structure of a sixth embodiment of the paging device of the present invention.

Detailed Description

The invention will now be described in detail with reference to the drawings and examples. The following embodiments may be combined with each other without conflict.

The main implementation body of the paging method of the first embodiment of the present invention is a User Equipment (UE), which may be fixed or mobile, and may be a cellular phone, a Personal Digital Assistant (PDA), a wireless modem, a tablet computer, a notebook computer, a cordless phone, etc. As shown in fig. 3, the present embodiment includes:

s11: the UE receives a core network paging message from the target base station in a standby state.

The core network paging message includes a core network identification of the UE.

When the UE is in an INACTIVE state (rrc_inactive), a base station in a notification area (hereinafter may be referred to as a notification area) configured for the UE will first page by a radio access network (Radio Access Network, RAN), and after the RAN fails to page, the core network notifies all base stations in a tracking area to page by the core network. The UE does not receive the RAN paging message and receives the core network paging message indicating that the RAN paging has failed. In this embodiment, the target base station refers to a base station that successfully pages to the UE, that is, a base station where the UE resides when receiving the paging message.

The target base station may belong to a notification area configured to the UE, for example, the UE is in a poor radio environment (e.g., enters a tunnel, has strong interference around, etc.) during the RAN paging process, and the radio environment in which the UE is located after the RAN paging failure core network paging begins is improved until the paging message of the core network can be received. The target base station may not belong to the notification area that has been configured for the UE, e.g., the UE has left the notification area without having received the RAN paging message during the RAN paging procedure.

S12: the UE judges whether the target base station belongs to a notification area configured to the UE.

If the target base station belongs to the notification area configured to the UE, the UE is still located in the notification area, and the step of jumping to S13 is performed; if the target base station does not belong to the notification area that has been allocated to the UE, this means that the UE has left the notification area, and the process goes to S14.

S13: the UE resumes connection with the target base station in the inactive state to change from the inactive state to the connected state.

Since the UE is still located in the notification area, and the core network and the anchor base station still keep the CN-RAN connection relation and UE context of the UE in this embodiment, although the core network paging message is received, the UE may respond in a manner of receiving the RAN paging message, that is, directly resume the connection with the target base station, and directly change from the rrc_inactive state to the CONNECTED state (rrc_connected) without entering the IDLE state (rrc_idle). The target base station may be any one of the base stations within the notification area.

S14: after the UE enters the idle state, connection is established with the target base station so as to change from the idle state to the connection state.

The target base station does not belong to the notification area, which means that an interface cannot be guaranteed between the target base station and the anchor base station, although the anchor base station still keeps the UE context, the target base station cannot necessarily acquire the UE context from the anchor base station, so that the processing can be performed in a manner that the UE in the rrc_inactive state receives the paging message of the core network in the prior art. Specifically, the UE enters an rrc_idle state and then establishes a connection with the target base station to change from the rrc_idle state to an rrc_connected state, the signaling overhead of which is similar to that of the prior art.

By implementing the embodiment, when the RAN paging fails but the UE is still in the notification area, the configured base station in the notification area performs core network paging, but the UE directly resumes the connection with the target base station after receiving the core network paging message, and can directly change from rrc_inactive to rrc_connected without entering rrc_idle, thereby reducing signaling overhead and processing overhead.

As shown in fig. 4, in a second embodiment of the paging method according to the present invention, S13 includes:

s131: and the UE sends a connection recovery request to the target base station.

The connection recovery request is an RRCConnectionResumeRequest including an Access network identifier (RAN UE ID) of the UE and in which a cause value (cause value) is a paging response (mt-Access), i.e. an RRC connection recovery request, similar to message 3 sent by the UE in the RAN paging success procedure in the prior art.

Since core network paging has already started, the paging message received by the UE includes its core network identifier (CN UE ID), and the reported connection recovery request includes its RAN UE ID, and the target base station may match the CN UE ID and the RAN UE ID of the UE by itself or through the anchor base station to confirm that the UE is found.

S132: the UE receives connection recovery signaling from the target base station.

S133: the UE changes from the inactive state to the connected state in response to the connection resume signaling.

The execution body of the third embodiment of the paging method of the present invention is a base station, which is an anchor base station in this embodiment. The base station is connected to the core network and wirelessly communicates with the UE to provide communication coverage for the corresponding geographic area. The base station may be a macro base station, a micro (micro) base station, a pico (pico) base station, or a home base station (femtocell). In some embodiments, a base station may also be referred to as a radio base station, access point, node B, evolved node B (eNodeB, eNB), gNB, or other suitable terminology. As shown in fig. 5, the present embodiment includes:

s21: the anchor base station performs RAN paging to page the UE and notifies the base stations in the notification area where they are located to perform RAN paging to page the UE.

The UE is in rrc_inactive. The anchor base station maintains the CN-RAN connection relation of the UE and stores the UE context, but does not know which base station the UE currently resides in, so RAN paging is required to find the UE after receiving downlink data from the core network. The RAN paging may include sending a RAN paging message multiple times, which may include the RAN UE ID of the UE.

The RAN paging message is typically sent periodically, and the transmission period and number of transmissions may be specified by the anchor base station to determine the total duration T of the RAN page. During the RAN paging procedure, the anchor base station can confirm whether the UE is found. If the UE is located in the anchor base station when found, the anchor base station can directly receive a connection recovery request of the UE; if the UE is found to reside in a notification area other than the anchor base station, the base station may request the anchor base station to retrieve the UE context.

S22: after the RAN paging fails, the anchor base station sends a RAN paging failure message to the core network.

The RAN paging failure message may be used to instruct the core network to reserve the CN-RAN connection relationship and the UE context (context) of the UE and inform all base stations in the tracking area to perform core network paging to page the UE.

After the total duration T of RAN paging passes, i.e. after all RAN paging messages have been sent, if the anchor base station has not always received a connection restoration request of the paged UE or a request to retrieve the UE context, this means that the RAN paging fails. The anchor base station needs to notify the core network of the RAN paging failure. In addition, in order to ensure that the UE can directly resume connection without entering the rrc_idle state in the case where the UE is still located in the notification area, the anchor base station and the core network should preserve the CN-RAN connection relationship and the UE context of the UE.

S23: the anchor base station performs core network paging to page the UE.

The anchor base station may receive a notification from the core network to perform core network paging before that. The core network paging may include sending a core network paging message multiple times, and the core network paging message may include a CN UE ID of the UE.

S24: the anchor base station receives a connection recovery request from the UE;

in this embodiment, the UE resides in the anchor base station when receiving the paging message, and the anchor base station belongs to the configured notification area. The connection resume request may be an RRCConnectionResumeRequest including the RAN UE ID of the UE and having a gausevalue of mt-Acces, i.e., an RRC connection resume request. Since the connection restoration request includes the RAN UE ID of the UE, the anchor base station needs to match the CN UE ID and the RAN UE ID of the UE to confirm that the UE is found.

S25: the anchor base station transmits connection restoration signaling to the UE to change the UE from the inactive state to the connected state.

As shown in fig. 6, the execution body of the fourth embodiment of the paging method of the present invention is a base station, which is an anchor base station in this embodiment. The main difference between this embodiment and the third embodiment of the paging method of the present invention is that the target base station where the UE resides when receiving the paging message is different from the anchor base station, and the same parts as those of the third embodiment of the paging method of the present invention are not repeated here. The embodiment comprises the following steps:

s26: the anchor base station performs RAN paging to page the UE and notifies the base stations in the notification area where they are located to perform RAN paging to page the UE.

S27: after the RAN paging fails, the anchor base station sends a RAN paging failure message to the core network.

S28: the anchor base station performs core network paging to page the UE.

S29: the anchor base station assists the target base station in changing the UE from the inactive state to the connected state.

Since the target base station is not an anchor base station, UE context may not be stored. The anchor base station may send UE context to the target base station to assist the target base station in restoring connectivity with the UE.

Specifically, as shown in fig. 7, if the target base station matches the CN UE ID and the RAN UE ID of the UE, this step may include:

s291: the anchor base station receives a request from the target base station to retrieve the UE context.

S292: and the anchor base station sends a retrieving UE context response message to the target base station.

Retrieving the UE context response message may include the UE context.

Specifically, as shown in fig. 8, if the anchor base station matches the CN UE ID and the RAN UE ID of the UE, this step may include:

s296: the anchor base station receives a request from the target base station to retrieve the UE context.

The retrieve UE context request may include the RAN UE ID of the UE.

S297: the anchor base station matches the CN UE ID and the RAN UE ID of the UE.

If the match is successful, the process goes to S298.

S298: and the anchor base station sends a retrieving UE context response message to the target base station.

As shown in fig. 9, the execution body of the fifth embodiment of the paging method of the present invention is a base station, which is a target base station in this embodiment. The embodiment comprises the following steps:

s31: the target base station performs RAN paging to page the UE.

The UE is in rrc_inactive. RAN paging includes sending a RAN paging message multiple times, the RAN paging message including a RAN UE ID of the UE. The RAN paging message is typically sent periodically, and the transmission period and number of transmissions may be specified by the anchor base station to determine the total duration T of the RAN page.

The target base station may receive notification of RAN paging and forwarded downlink data from the anchor base station before performing the RAN paging.

S32: after the RAN paging fails, the target base station performs core network paging to page the UE.

After the RAN fails to page, the anchor base station and the core network should keep the CN-RAN connection relation and the UE context of the UE.

The core network paging includes sending a core network paging message multiple times, the core network paging message including a CN UE ID of the UE. The target base station may receive a notification from the core network to perform core network paging before performing core network paging.

S33: the target base station receives a connection recovery request from the UE.

In this embodiment, the UE resides in the target base station when receiving the paging message, the target base station belongs to the configured notification area, and the target base station is different from the anchor base station. The connection resume request may be an RRCConnectionResumeRequest including the RAN UE ID of the UE and having a gausevalue of mt-Acces, i.e., an RRC connection resume request.

S34: the target base station sends connection restoration signaling to the UE to change the UE from the inactive state to the connected state.

As shown in fig. 10, a sixth embodiment of the paging method according to the present invention is based on the fifth embodiment of the paging method according to the present invention, after S33, before S34, further includes:

s35: the target base station matches the RAN UE ID with the CN UE ID.

If the matching is successful, the subsequent step is executed, namely, a connection recovery signaling is sent to the UE.

In this embodiment, the target base station matches the RAN UE ID and CN UE ID of the UE, and in other embodiments, the anchor base station may also match the RAN UE ID and CN UE ID.

As shown in fig. 11, a seventh embodiment of the paging method according to the present invention is based on the fifth embodiment of the paging method according to the present invention, after S33, before S34, further includes:

s36: the target base station sends a request for retrieving the UE context to the anchor base station.

S37: the target base station receives the retrieved UE context response message from the anchor base station.

Retrieving the UE context response message may include the UE context.

If the target base station does not store the UE context, the above steps need to be performed before restoring the connection with the UE.

This embodiment may be combined with the sixth embodiment of the paging method of the present invention, in which case S36 and S37 may be performed between S35 and S34.

The specific signaling interactions that determine how to respond upon receipt of a RAN paging message in the case where the UE resides in a different base station are illustrated below in conjunction with fig. 12-14, where the same parts as in the previous embodiments are not repeated here.

As shown in fig. 12, in the eighth embodiment of the paging method of the present invention, RAN paging fails and the UE resides in the anchor base station when it receives the core network paging message. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the anchor base station, which are not shown. The embodiment comprises the following steps:

s101: the core network transmits downlink data to the anchor base station.

S102: the anchor base station performs RAN paging but fails.

S103: the anchor base station sends a paging failure message to the core network.

S104: the core network sends a core network paging notification to the anchor base station.

The core network reserves the CN-RAN connection relation and the UE context of the UE. The core network paging notification is used to instruct the anchor base station to perform core network paging.

S105: the anchor base station sends a core network paging message to the UE.

S106: the UE confirms that the anchor base station belongs to the notification zone.

S107: the UE sends message 1 to the anchor base station: random access preamble (preamble).

Random access is initiated.

S108: the anchor base station sends message 2 to the UE: random access response.

S109: the UE sends message 3 to the anchor base station: RRCConnectionResumeRequest.

The RRCConnectionResumeRequest may include a RAN UE ID of the UE, and the causeValue therein may be mt-Acces.

Since the anchor base station stores the UE context, it is unnecessary to retrieve the UE context from other base stations.

S110: the anchor base station matches the RAN UE ID and CN UE ID of the UE.

And executing the subsequent steps after the matching is successful.

S111: the anchor base station sends message 4 to the UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S112: the UE sends message 5 to the anchor base station: RRCConnectionResumeComplete.

As shown in fig. 13, in a ninth embodiment of the paging method of the present invention, the target base station where RAN paging fails and the UE resides when receiving the core network paging message belongs to the notification area but is different from the anchor base station. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the target base station and the anchor base station, which are not shown. The embodiment comprises the following steps:

S201: the core network transmits downlink data to the anchor base station.

S202: the anchor base station sends a RAN paging announcement to the target base station.

The RAN paging announcement is used to instruct the target base station to perform RAN paging.

S203: the anchor base station performs RAN paging but fails.

S204: the target base station performs RAN paging but fails.

The order of execution between S203 and S204 is illustrative only.

S205: the anchor base station sends a paging failure message to the core network.

S206: the core network sends a core network paging notification to the anchor base station and the target base station.

The core network reserves the CN-RAN connection relation and the UE context of the UE. The core network paging notification is used to indicate that core network paging is to be performed.

S207: the anchor base station transmits a core network paging message but the UE does not receive it.

S208: and the UE receives the paging message of the core network sent by the target base station.

The order of execution between S207 and S208-S214 is illustrative only.

S209: the UE confirms that the target base station belongs to the notification area.

S210: the UE sends message 1 to the target base station: random access preamble.

Random access is initiated.

S211: the target base station sends message 2 to the UE: random access response.

S212: the UE sends message 3 to the target base station: RRCConnectionResumeRequest.

S213: and the target base station matches the RAN UE ID and the CN UE ID of the UE.

In this embodiment, the target base station performs ID matching, and in other embodiments, the anchor base station may also perform matching on the RAN UE ID and the CN UE ID of the UE upon receiving a request for retrieving the UE context.

And executing the subsequent steps after the matching is successful.

S214: and the target base station sends a request for retrieving the UE context to the anchor base station.

Since the target base station does not store the UE context, it is necessary to retrieve the UE context from the anchor base station.

S215: and the anchor base station sends a retrieving UE context response message to the target base station.

S216: the target base station sends a message 4 to the UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S217: the UE sends message 5 to the target base station: RRCConnectionResumeComplete.

S218: and the target base station performs path switching.

As shown in fig. 14, in the tenth embodiment of the paging method of the present invention, RAN paging fails and a target base station where the UE resides when receiving a core network paging message does not belong to a notification area. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the target base station and the anchor base station, which are not shown. The embodiment comprises the following steps:

S301: the core network transmits downlink data to the anchor base station.

S302: the anchor base station performs RAN paging but fails.

S303: the anchor base station sends a paging failure message to the core network.

S304: the core network sends a core network paging notification to the anchor base station and the target base station.

S305: the anchor base station transmits a core network paging message but the UE does not receive it.

S306: and the UE receives the paging message of the core network sent by the target base station.

The order of execution between S305 and S306-S315 is illustrative only.

S307: the UE confirms that the target base station does not belong to the notification area.

The UE then enters the rrc_idle state.

S308: the UE sends message 1 to the target base station: random access preamble.

Random access is initiated.

S309: the target base station sends message 2 to the UE: random access response.

S310: the UE sends message 3 to the target base station: RRCConnectionRequest.

The causeValue in RRCConnection request may be mt-Acces.

S311: the target base station sends a message 4 to the UE: RRCConnectionSetup.

The UE then transitions from rrc_idle to rrc_connected.

S312: the UE sends message 5 to the anchor base station: rrcconnectionsetutpcomplete.

S313: the target base station sends an initial UE message to the core network.

S314: the core network releases the old UE context and CN-RAN connection.

S315: the core network informs the anchor base station to release the old UE context and CN-RAN connection relation.

S316: the core network sends a context establishment request to the target base station.

S317: the target base station sends message 6 to the UE: RRCConnectionReconfiguration.

S318: the UE sends message 7 to the target base station: RRCConnectionReconfigurationComplete.

S319: and the target base station sends a context establishment response message to the core network.

S320: the core network modifies the bearer.

As shown in fig. 15, an execution body of the eleventh embodiment of the paging method of the present invention is a base station, and the base station belongs to a notification area configured for a UE, and the embodiment includes:

s41: the base station performs RAN paging to page the UE.

The UE is in rrc_inactive state. The anchor base station maintains the CN-RAN connection relation of the UE and stores the UE context, but does not know which base station the UE currently resides in, so RAN paging is required to find the UE after receiving downlink data from the core network. The base station may or may not be an anchor base station.

For ease of distinction, we refer to pages within the notification area initiated by the anchor base station as first round pages; paging within the tracking area initiated by the core network is referred to as second round paging. The RAN page in this step belongs to the first round.

The RAN paging may include sending a RAN paging message multiple times, the RAN paging message including a RAN UE ID of the UE. The RAN paging message is typically sent periodically, and the transmission period and number of transmissions may be specified by the anchor base station to determine the total duration T of the first round of RAN paging.

S42: after the RAN paging failure, the base station continues the RAN paging instead of the core network paging to page the UE.

In the second round of paging process, the anchor base station and the core network still keep the CN-RAN connection relation and UE context of the UE, and inform the base station in the area to continue RAN paging, and inform the base station in the tracking area outside the area to page the core network. The core network paging includes sending a core network paging message multiple times, the core network paging message including a CN UE ID of the UE.

Assuming that the UE is still in the notification area and only receives the paging message during the second round of paging, in this case the UE receives the RAN paging message still including its RAN UE ID, the UE and the target base station that found it may interact according to the standard RAN paging success procedure to resume connection with the target base station, thereby directly changing from rrc_inactive to rrc_connected.

The UE is assumed to be located outside the notification area and only receives the paging message in the second paging process, where the UE receives the paging message of the core network, and may process the paging message of the core network according to the manner that the UE in the rrc_inactive state receives the paging message of the core network in the prior art. Specifically, the UE enters an rrc_idle state and then establishes a connection with the target base station to change from the rrc_idle state to an rrc_connected state, the signaling overhead of which is similar to that of the prior art.

By implementing the embodiment, in the case that the RAN paging fails but the UE is still in the notification area, the base station in the notification area can continue to perform the RAN paging instead of the core network paging, so that the UE and the target base station for finding it can interact according to the standard RAN paging success flow, and the UE can directly change from rrc_inactive to rrc_connected without entering the rrc_idle state, thereby reducing signaling overhead and processing overhead.

As shown in fig. 16, a twelfth embodiment of the paging method of the present invention is based on the eleventh embodiment of the paging method of the present invention, in which the base station is not an anchor base station of the notification area. This embodiment is a further extension of the eleventh embodiment of the paging method of the present invention, and the same parts as those are not repeated here. The embodiment comprises the following steps:

s411: the base station receives notification from the anchor base station to perform RAN paging.

In addition to the notification, the base station may also receive downlink data forwarded by the anchor base station.

S412: the base station performs RAN paging to page the UE.

S413: after the RAN paging fails, the base station receives a notification from the anchor base station that the RAN paging is continued.

S414: the base station continues RAN paging instead of core network paging to page the UE.

As shown in fig. 17, a thirteenth embodiment of the paging method according to the present invention is based on the eleventh embodiment of the paging method according to the present invention, wherein the base station is an anchor base station of the notification area. This embodiment is a further extension of the eleventh embodiment of the paging method of the present invention, and the same parts as those are not repeated here. The embodiment comprises the following steps:

s421: the base station performs RAN paging to page the UE and transmits a notification of the performance of the RAN paging to the base stations in the notification area.

S422: after the RAN paging fails, the base station sends a RAN paging failure message to the core network.

After the total duration T of the first round of RAN paging passes, i.e. after all RAN paging messages have been sent, if the anchor base station has not always received a connection restoration request of the paged UE or a request to retrieve the UE context, this means that the RAN paging fails.

The RAN paging failure message is used for indicating the core network to keep the context of the UE, notifying other base stations in the tracking area except the base stations in the notification area to execute core network paging to page the UE and not notifying the base stations in the notification area to perform core network paging.

S423: the base station continues RAN paging instead of core network paging to page the UE and sends a notification to the base stations in the notification area to continue RAN paging.

As shown in fig. 18, an execution body of a fourteenth embodiment of the paging method of the present invention is a core network, and the embodiment includes:

s51: the core network receives the RAN page failure message from the anchor base station.

The RAN paging failure message is used to instruct the core network to retain the context of the UE and to inform other base stations in the tracking area than the base stations in the notification area to perform core network paging to page the UE.

S52: the core network responds to the RAN paging failure message, reserves the context of the paged UE, notifies other base stations in the tracking area except the base station in the notification area where the anchor base station is located to execute the core network paging, and does not notify the base station in the notification area where the anchor base station is located to execute the core network paging.

The core network paging includes sending a core network paging message multiple times, the core network paging message including a CN UE ID of the UE, and the RAN paging includes sending a RAN paging message multiple times, the RAN paging message including a RAN UE ID of the UE.

Specifically, the core network may not notify the base station in the notification area where the anchor base station is located to perform core network paging, but notify the base station in the notification area to continue RAN paging by the anchor base station.

The specific signaling interaction procedure for the base station in the notification area to continue RAN paging and for the base station outside the notification area to perform core network paging in the tracking area after the first round of RAN paging failure in the case that the UE resides in a different base station is illustrated in the following fig. 19 to 21, wherein the same parts as in the previous embodiments are not repeated here. For ease of illustration, only two base stations are shown in fig. 19-21: base station 1 and base station 2, wherein base station 1 is located in the notification area, base station 2 is located outside the notification area in the tracking area, and the number of actual base stations can be more.

As shown in fig. 19, in the fifteenth embodiment of the paging method of the present invention, the UE is found by the base station 1 in the notification area in the second round of paging, and the base station 1 is an anchor base station. The embodiment comprises the following steps:

s431: the core network transmits downlink data to the base station 1.

S432: the base station 1 transmits a RAN paging announcement to other base stations within the announcement area.

The RAN paging announcement is used to indicate that RAN paging is performed.

S433: the base station 1 performs RAN paging but fails.

S434: the base station 1 sends a paging failure message to the core network.

S435: the base station 1 transmits a notification to the other base stations in the notification area to proceed with RAN paging.

The core network reserves the CN-RAN connection relation and the UE context of the UE.

S436: the core network sends a core network paging notification to the base station 2.

The core network paging notification is used to indicate that core network paging is to be performed.

S437: the base station 2 sends a core network paging message but the UE does not receive it.

S438: the UE receives the RAN paging message sent by the base station 1.

The order of execution between S435/S438 and S436-S437 is not limited.

S439: the UE sends message 1 to base station 1: random access preamble.

Random access is initiated.

S440: base station 1 sends message 2 to UE: random access response.

S441: the UE sends message 3 to base station 1: RRCConnectionResumeRequest.

Since the base station 1 stores UE context as an anchor base station, it is not necessary to retrieve UE context from other base stations.

S442: base station 1 sends message 4 to UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S443: the UE sends message 5 to base station 1: RRCConnectionResumeComplete.

As shown in fig. 20, in the sixteenth embodiment of the paging method of the present invention, the UE is found by the base station 1 in the notification area in the second round of paging, and the base station 1 is not an anchor base station. The embodiment comprises the following steps:

s451: the base station 1 receives a core network paging announcement from an anchor base station.

S452: the base station 1 performs RAN paging but fails.

S453: the base station 1 receives notification from the anchor base station to proceed with RAN paging.

S454: the core network sends a core network paging notification to the base station 2.

S455: the base station 2 sends a core network paging message but the UE does not receive it.

S456: the UE receives the RAN paging message sent by the base station 1.

The order of execution between S453/S456 and S454-S455 is not limited.

S457: the UE sends message 1 to base station 1: random access preamble.

Random access is initiated.

S458: base station 1 sends message 2 to UE: random access response.

S459: the UE sends message 3 to base station 1: RRCConnectionResumeRequest.

S460: base station 1 retrieves UE context from the anchor base station.

The base station 1 is not an anchor base station, does not store UE context, and needs to retrieve UE context from the anchor base station.

S461: base station 1 sends message 4 to UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S462: the UE sends message 5 to base station 1: RRCConnectionResumeComplete.

S463: the base station 1 performs path switching.

As shown in fig. 21, in a seventeenth embodiment of the paging method of the present invention, the UE is found by the base station 2 outside the notification area in the second round of paging, and the base station 1 is an anchor base station. The embodiment comprises the following steps:

s501: the core network transmits downlink data to the base station 1.

S502: the base station 1 transmits a RAN paging announcement to other base stations within the announcement area.

The RAN paging announcement is used to indicate that RAN paging is performed.

S503: the base station 1 performs RAN paging but fails.

S504: the anchor base station sends a paging failure message to the core network.

S505: the base station 1 transmits a notification to the other base stations in the notification area to proceed with RAN paging.

The execution order between S505 and S506/S508 is not limited.

S506: the core network sends a core network paging notification to the base station 2.

S507: the base station 1 sends a RAN paging message but the UE does not.

The order of execution between S507 and S506/S508-S514 is not limited.

S508: the UE receives the core network paging message sent by the base station 2.

The UE then enters the rrc_idle state.

S509: the UE sends message 1 to base station 2: random access preamble.

Random access is initiated.

S510: base station 2 sends message 2 to UE: random access response.

S511: the UE sends message 3 to base station 2: RRCConnectionRequest.

The causeValue in RRCConnection request may be mt-Acces.

S512: base station 2 sends message 4 to UE: RRCConnectionSetup.

The UE then transitions from rrc_idle to rrc_connected.

S513: the UE sends message 5 to the anchor base station: rrcconnectionsetutpcomplete.

S514: the base station 2 sends an initial UE message to the core network.

S515: the core network releases the old UE context and CN-RAN connection.

S516: the core network informs the base station 1 to release the old UE context and CN-RAN connection relation.

S517: the core network sends a context setup request to the base station 2.

S518: base station 2 sends message 6 to UE: RRCConnectionReconfiguration.

S519: the UE sends message 7 to the base station 2: RRCConnectionReconfigurationComplete.

S520: the base station 2 sends a context setup response message to the core network.

S521: the core network modifies the bearer.

As shown in fig. 22, the execution body of the eighteenth embodiment of the paging method of the present invention is a base station, and in this embodiment is an anchor base station. The embodiment comprises the following steps:

s61: the anchor base station performs RAN paging to page the UE and notifies the base stations in the notification area where they are located to perform RAN paging to page the UE.

The UE is in rrc_inactive. The anchor base station maintains the CN-RAN connection relation of the UE and stores the UE context, but does not know which base station the UE currently resides in, so RAN paging is required to find the UE after receiving downlink data from the core network. The RAN paging may include sending a RAN paging message multiple times, which may include the RAN UE ID of the UE. The RAN paging message is typically sent periodically, and the transmission period and number of transmissions may be specified by the anchor base station to determine the total duration T of the RAN page.

In addition to the notification, the anchor base station may forward the received downlink data to the base stations in the notification area.

S62: during the RAN paging process, the anchor base station receives a connection recovery request with a cause value of access network-based location area update (RAN-based Location Area Update, RLAU) from the UE without receiving a paging response of the UE.

The paging response of the UE may include a connection restoration request from the UE with a cause value of mt-Access (when the target base station where the UE resides is an anchor base station), or a retrieval UE context request transmitted from the target base station where the UE resides in response to the connection restoration request from the UE with a cause value of mt-Access (when the target base station where the UE resides is not an anchor base station).

The connection recovery request with the cause value of RLAU, abbreviated as RLAU request, may be an RRCConnectionResumeRequest including the RAN UE ID of the UE and the cause value being an access network area update (ranarea update), i.e. an RRC connection recovery request, which is different from the message 3 sent by the UE in the RAN paging success procedure in the prior art.

During the RAN paging procedure, i.e. during the total duration T, it may happen that the UE is originally in a poor radio environment (e.g. entering a tunnel, having strong interference around, etc.), the RAN paging message cannot be received, and when the radio environment of the UE improves, the RLAU procedure is started without receiving the RAN paging message. The base station where the UE resides in this embodiment is an anchor base station, and RLAU may be periodic.

S63: the anchor base station transmits connection restoration signaling to the UE to change the UE from the inactive state to the connected state.

The connection recovery signaling may be RRCConnectionResume, i.e. RRC connection recovery.

In the prior art, the anchor base station transmits RRCConnectionSuspend to the UE in response to the RLAU request to maintain the UE in rrc_inactive state. If the UE in rrc_inactive state subsequently receives the RAN paging message, it may transition from rrc_inactive state to rrc_connected state according to the standard RAN paging success procedure, which may cause additional paging delay and additional signaling overhead due to a period of time in between to maintain rrc_inactive state. Conversely, if the UE that remains in rrc_inactive state cannot subsequently receive the RAN paging message, e.g., the RLAU request is initiated after the RAN paging message is sent and before T ends, the RAN paging may fail and core network paging needs to be performed, resulting in additional signaling overhead and processing overhead.

By implementing the embodiment, in the RAN paging process, if the UE does not receive the RAN paging message, the RLAU process is started, and after receiving the RLAU request, the anchor base station sends a connection resume signaling instead of sending a connection suspension to the UE to complete the RLAU, so as to change the UE from rrc_inactive to rrc_connected, thereby omitting the process of maintaining rrc_inactive, and reducing the probability of RAN paging failure, so that signaling overhead and processing overhead are reduced.

As shown in fig. 23, the execution body of the nineteenth embodiment of the paging method of the present invention is a base station, and in this embodiment is an anchor base station. The main difference between this embodiment and the eighteenth embodiment of the paging method of the present invention is that the target base station is different from the anchor base station, and the same parts as those of the eighteenth embodiment of the paging method of the present invention are not repeated here. The embodiment comprises the following steps:

s66: the anchor base station performs RAN paging to page the UE and notifies the base stations in the notification area where they are located to perform RAN paging to page the UE.

S67: in the RAN paging process, the anchor base station receives a request for retrieving UE context from the target base station under the condition that the paging response of the UE is not received.

The request to retrieve the UE context is sent by the target base station in response to an RLAU request from the UE. The specific description of the RLAU request may refer to the relevant content in the previous embodiment.

The target base station in this embodiment refers to a base station where the UE resides when initiating the RLAU procedure. The target base station may belong to the same notification area as the anchor base station, in which case the RLAU is periodic. The target base station may belong to a different notification area than the anchor base station, in which case the RLAU is mobility triggered.

The request to retrieve the UE context includes an access network area update flag indicating that the UE is requesting an access network based location area update. The configuration values in the request for retrieving UE context corresponding to different types of RLAUs may be different.

S68: the anchor base station sends a retrieval UE context response message to the target base station to assist the target base station in changing the UE from the standby state to the connected state.

The retrieving UE context response message includes a paging flag and a UE context, where the paging flag is used to instruct the UE to be RAN paged by a notification area where the anchor base station is located, so as to notify the target base station to send a connection restoration signaling to the UE instead of RRCConnectionSuspend.

Optionally, if the target base station and the anchor base station belong to different notification areas, the anchor base station may forward downlink data from the core network to the target base station after this step.

By implementing the embodiment, in the RAN paging process, if the UE does not receive the RAN paging message, the RLAU process is started, after receiving the RLAU request, the target base station does not send a connection suspension to complete the RLAU to the UE, but sends a connection restoration signaling to change the UE from rrc_inactive to rrc_connected, if the base station where the UE resides belongs to the notification area, the process of maintaining rrc_inactive is omitted, signaling overhead is reduced, and if the target base station does not belong to the notification area, in the prior art, the RAN paging may fail and needs to execute core network paging, and in the present embodiment, the UE can be found successfully in the RAN paging process without executing core network paging, thereby reducing the probability of RAN paging failure and signaling overhead and processing overhead.

As shown in fig. 24, the execution body of the twentieth embodiment of the paging method of the present invention is a base station, and in this embodiment is a target base station. The embodiment comprises the following steps:

s71: the target base station receives the RLAU request from the UE in the inactive state.

The target base station may belong to the same notification area as the anchor base station, in which case the RLAU is periodic and the target base station may be in the process of the RAN paging the UE. The target base station may belong to a different notification area than the anchor base station, in which case the RLAU is mobility triggered and the target base station is not paging the UE.

The RLAU request may be an RRCConnectionResumeRequest including the RAN UE ID of the UE and the casevalue is ranarea update, i.e. an RRC connection resume request, unlike the message 3 sent by the UE in the RAN paging success procedure in the prior art.

S72: the target base station sends a request for retrieving the UE context to the anchor base station in response to the RLAU request.

The target base station does not store the UE context and needs to retrieve the UE context from the anchor base station to complete the subsequent procedure. The request to retrieve the UE context may include an access network area update flag indicating that the UE is requesting an access network based location area update. The configuration values in the request for retrieving UE context corresponding to different types of RLAUs may be different.

S73: the target base station receives the retrieved UE context response message from the anchor base station.

The retrieving UE context response message may include a paging flag and a UE context, where the paging flag is used to indicate that the UE is being RAN paged by the notification area where the anchor base station is located.

If the target base station and the anchor base station do not belong to the same notification area, the target base station can receive downlink data forwarded by the anchor base station and sent to the anchor base station by the core network.

S74: the target base station sends connection restoration signaling to the UE to change the UE from the inactive state to the connected state.

The connection recovery signaling is RRCConnectionResume, i.e. RRC connection recovery.

For details, reference may be made to the description of nineteenth and twentieth embodiments of the paging method of the present invention.

By implementing the embodiment, in the RAN paging process, if the UE does not receive the RAN paging message, the RLAU process is started, and after receiving the RLAU request, the target base station does not send a connection suspension to complete the RLAU to the UE, but sends a connection restoration signaling to change the UE from rrc_inactive to rrc_connected, if the base station where the UE resides belongs to the notification area, the process of maintaining rrc_inactive is omitted, and the probability of RAN paging failure is reduced, thereby reducing signaling overhead and processing overhead, and if the target base station does not belong to the notification area, in the prior art, the RAN paging may fail and needs to perform core network paging, but the embodiment can successfully find the UE in the RAN paging process without performing core network paging, thereby reducing the probability of RAN paging failure, and reducing signaling overhead and processing overhead.

As shown in fig. 25, a twenty-first embodiment of the paging method according to the present invention is based on the twentieth embodiment of the paging method according to the present invention, and the step S71 is preceded by:

s75: the target base station receives notification from the anchor base station to perform RAN paging.

In this embodiment, the target base station and the anchor base station belong to the same notification area. In addition to the notification, the target base station may also receive downlink data forwarded by the anchor base station to the anchor base station by the core network.

S76: the target base station performs RAN paging to page the UE in response to the notification.

As shown in fig. 26, the paging method according to the twenty-second embodiment of the present invention is performed by a UE. The embodiment comprises the following steps:

s81: the UE in the inactive state sends an RLAU request to the target base station without receiving the RAN paging message.

During the RAN paging procedure, i.e. during the total duration T, it may happen that the UE is originally in a poor radio environment (e.g. entering a tunnel, having strong interference around, etc.), the RAN paging message cannot be received, and when the radio environment of the UE improves, the RLAU procedure is started without receiving the RAN paging message.

The target base station in this embodiment refers to a base station where the UE resides when initiating the RLAU procedure. The target base station may belong to the notification area, in which case RLAU is periodic, and the target base station may or may not be an anchor base station; or the target base station may not belong to the notification area, in which case RLAU is mobility triggered.

S82: the UE receives connection recovery signaling from the target base station.

S83: the UE enters the connected state from the inactive state in response to the connection recovery signaling.

The specific signaling interaction procedure in the case where the UE performs RLAU and resides in a different base station when it does not receive a RAN paging message is illustrated below in connection with fig. 27-29, wherein the same parts as in the previous embodiments are not repeated here.

As shown in fig. 27, in a twenty-third embodiment of the paging method of the present invention, the UE performs RLAU and camps on the anchor base station when it does not receive the RAN paging message. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the anchor base station, which are not shown. The embodiment comprises the following steps:

s601: the core network transmits downlink data to the anchor base station.

S602: the anchor base station broadcasts the RAN paging message but the UE does not.

S603: the UE sends message 1 to the anchor base station: random access preamble.

Random access is initiated.

S604: the anchor base station sends message 2 to the UE: random access response.

S605: the UE sends message 3 to the anchor base station: RRCConnectionResumeRequest.

RRCConnectionResumeRequest is included as RLAU request, including the RAN UE ID of the UE and the casevalue is ranAreaUpdate. This step is completed within the total duration T of the RAN paging.

S606: the anchor base station sends message 4 to the UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S607: the UE sends message 5 to the anchor base station: RRCConnectionResumeComplete.

As shown in fig. 28, in a twenty-fourth embodiment of the paging method of the present invention, the UE performs RLAU when not receiving the RAN paging message and the camping target base station belongs to the notification area but is different from the anchor base station. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the target base station and the anchor base station, which are not shown. The embodiment comprises the following steps:

S701: the core network transmits downlink data to the anchor base station.

S702: the anchor base station sends a RAN paging announcement to the target base station.

The RAN paging announcement is used to instruct the target base station to perform RAN paging. In addition, the anchor base station may also forward downlink data to the target base station.

S703: the anchor base station performs RAN paging.

S704: the UE receives a RAN paging message from the target base station.

The order of execution between S703 and S704 is illustrative only.

S705: the UE sends message 1 to the target base station: random access preamble.

Random access is initiated.

S706: the target base station sends message 2 to the UE: random access response.

S707: the UE sends message 3 to the target base station: RRCConnectionResumeRequest.

S708: and the target base station authenticates the UE.

And executing the subsequent steps after the verification is successful.

S709: and the target base station sends a request for retrieving the UE context to the anchor base station.

The retrieval UE context request includes an access network area update flag. Since the target base station does not store the UE context, it is necessary to retrieve the UE context from the anchor base station.

S710: and the anchor base station sends a retrieving UE context response message to the target base station.

Retrieving the UE context response message includes a paging flag.

S711: and the target base station performs path switching.

S712: the target base station informs the anchor base station to release the old UE context.

S713: the target base station sends a message 4 to the UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S714: the UE sends message 5 to the target base station: RRCConnectionResumeComplete.

As shown in fig. 29, in a twenty-fifth embodiment of the paging method of the present invention, the UE performs RLAU when it does not receive the RAN paging message and the camping target base station does not belong to the notification area. For ease of illustration, the number of actual base stations may be greater for other base stations in the notification/tracking area than the target base station and the anchor base station, which are not shown. The embodiment comprises the following steps:

s801: the core network transmits downlink data to the anchor base station.

S802: the anchor base station performs RAN paging.

S803: the UE sends message 1 to the target base station: random access preamble.

Random access is initiated.

S804: the target base station sends message 2 to the UE: random access response.

S805: the UE sends message 3 to the target base station: RRCConnectionResumeRequest.

S806: and the target base station authenticates the UE.

And executing the subsequent steps after the verification is successful.

S807: and the target base station sends a request for retrieving the UE context to the anchor base station.

S808: and the anchor base station sends a retrieving UE context response message to the target base station.

Retrieving the UE context response message includes a paging flag.

S809: the anchor base station forwards the downlink data to the target base station.

The downlink data in this step may be downlink data received from the core network by the anchor base station in S801.

S810: and the target base station performs path switching.

S811: the target base station informs the anchor base station to release the old UE context.

S812: the target base station sends a message 4 to the UE: RRCConnectionResume.

The UE then transitions from rrc_inactive to rrc_connected.

S813: the UE sends message 5 to the target base station: RRCConnectionResumeComplete.

As shown in fig. 30, a first embodiment of the paging device of the present invention includes: processor 110 and communication circuit 120, processor 110 is connected to communication circuit 120.

The communication circuit 120 is used to transmit and receive user data, and is an interface through which the paging device communicates with other communication devices.

The processor 110 controls the operation of the paging device, and the processor 110 may also be referred to as a CPU (Central Processing Unit ). The processor 110 may be an integrated circuit chip with signal processing capabilities. Processor 110 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The processor 110 is configured to execute instructions to implement the method provided in any of the first, second and twenty-second embodiments of the paging method of the present invention.

The paging device in this embodiment may be a UE, or may be a separate component that may be integrated in the UE, such as a baseband chip.

As shown in fig. 31, a second embodiment of the paging device of the present invention includes: processor 210 and communication circuit 220, processor 210 is connected to communication circuit 220.

The communication circuit 220 is used to transmit and receive user data, and is an interface through which the paging device communicates with other communication devices.

The processor 210 controls the operation of the paging device, and the processor 110 may also be referred to as a CPU (Central Processing Unit ). The processor 110 may be an integrated circuit chip with signal processing capabilities. Processor 110 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The processor 210 is configured to execute instructions to implement the methods provided by any one of the third through seventh, eleventh through thirteenth, eighteenth through twenty-first embodiments of the paging method and any non-conflicting combination of the present invention.

The paging device in this embodiment may be a base station or may be a separate component, such as a baseband board, that may be integrated into the base station.

As shown in fig. 32, a third embodiment of the paging device of the present invention includes: processor 310 and communication circuit 320, processor 310 is connected to communication circuit 320.

The communication circuit 320 is used to transmit and receive user data, and is an interface through which the paging device communicates with other communication devices.

Processor 310 controls the operation of the paging device, and processor 110 may also be referred to as a CPU (Central Processing Unit ). The processor 110 may be an integrated circuit chip with signal processing capabilities. Processor 110 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The processor 310 is configured to execute instructions to implement the method provided by the fourteenth embodiment of the paging method of the present invention.

The paging device in this embodiment may be a core network.

As shown in fig. 33, the fourth embodiment of the paging device of the present invention includes a memory 410, and the memory 410 stores instructions that, when executed, implement the method provided in any one of the first, second and twenty-second embodiments of the paging method of the present invention.

The Memory 410 may include a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a Flash Memory (Flash Memory), a hard disk, an optical disk, and the like.

As shown in fig. 34, the fifth embodiment of the paging device of the present invention includes a memory 510, and the memory 510 stores instructions that, when executed, implement the method provided by any one of the third to seventh, eleventh to thirteenth, eighteenth to twentieth embodiments of the paging method of the present invention and any non-conflicting combination.

The Memory 510 may include a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a Flash Memory (Flash Memory), a hard disk, an optical disk, and the like.

As shown in fig. 35, embodiment 6 of the paging apparatus of the present invention includes a memory 610, and the memory 610 stores instructions that, when executed, implement the method provided in any one of the fourteenth embodiments of the paging method of the present invention.

The Memory 610 may include a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a Flash Memory (Flash Memory), a hard disk, an optical disk, and the like.

The paging device in this embodiment may be one or more network elements in the core network or may be a separate component that may be integrated in the core network/network element.

In the several embodiments provided in the present invention, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. The paging method is characterized in that user equipment has a core network-wireless access network connection relation, a base station which maintains the core network-wireless access network connection relation of the user equipment and stores the context of the user equipment is an anchor base station, and the anchor base station is used for configuring a notification area for the user equipment; the core network responds to the connection of the user equipment to the anchor base station, and sends downlink data to the anchor base station so that the anchor base station executes paging initiated by the wireless access network and notifies the base station in the notification area to execute wireless access network paging to page the user equipment in the notification area; the paging method comprises the following steps:

the core network receives a radio access network paging failure message from an anchor base station, wherein the radio access network paging failure message is generated by the anchor base station after the anchor base station executes radio access network paging, the radio access network paging failure message is used for representing that the user equipment does not receive the radio access network paging message, the radio access network paging comprises radio access network paging messages which are sent to the user equipment by the base station for a plurality of times, and the radio access network paging message comprises an access network identifier of the user equipment;

The core network responds to the wireless access network paging failure message, reserves the context of the paged user equipment, notifies other base stations except the base station in the notification area where the anchor base station is located in the tracking area to execute core network paging, and does not notify the base station in the notification area where the anchor base station is located to execute the core network paging; the core network paging comprises core network paging information which is sent to the user equipment by the anchor base station for a plurality of times, and the core network paging information comprises a core network identifier of the user equipment.

2. A paging device comprising a processor and a communication circuit, said processor being coupled to said communication circuit;

the processor is configured to execute instructions to implement the method of claim 1.

3. A paging device storing instructions which, when executed, implement the method of claim 1.