CN117998682A

CN117998682A - Information transmission method and device, communication equipment and storage medium

Info

Publication number: CN117998682A
Application number: CN202410032173.5A
Authority: CN
Inventors: 李艳华
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2024-05-07
Also published as: CN111670604B; WO2021208102A1; CN111670604A

Abstract

The embodiment of the disclosure provides an information transmission method and device, communication equipment and storage medium. The information transmission method comprises the following steps: the first base station receives auxiliary information of User Equipment (UE) from the second base station through an inter-base station interface, wherein the auxiliary information comprises: at least part of the power saving signal is configured.

Description

Information transmission method and device, communication equipment and storage medium

The application is a divisional application of China application No. 202080000738.1, filed on 17 months of 2020.

Technical Field

The embodiment of the disclosure relates to the field of wireless communication, but is not limited to the field of wireless communication, and particularly relates to an information transmission method and device, a communication device and a storage medium.

Background

A User Equipment (UE) terminal has a discontinuous reception (Discontinuous Reception, DRX) state in which the terminal consumes less power than a terminal in a connected state.

For example, in a Narrowband (NB) device, the device may periodically sleep and wake up, reducing the power consumption of the narrowband device by sleep.

To further save power consumption of the UE in DRX state, a wake-up signal (Wake UP Signaling, WUS) is also introduced, which is transmitted before the wake-up period, and the terminal determines whether to maintain the wake-up state in a subsequent wake-up period by listening to WUS to listen to the PDCCH. The WUS signal here may in turn be a power saving signal.

When a base station needs to page a UE in a dormant state, the configuration of the UE on the power saving signal needs to be obtained, and then a paging message can be sent at paging occasions (Paging Occasion, PO) of the UE in an awake state, so that the paging success rate of the UE is improved. However, if the precondition of paging the UE is successful, the power saving signal configuration of the UE is successfully obtained, but the acquisition of the power saving signal configuration in the related art has the problems of long transmission path or large acquisition delay.

Disclosure of Invention

The embodiment of the disclosure provides an information transmission method and device, communication equipment and storage medium.

A first aspect of an embodiment of the present disclosure provides an information transmission method, including:

The first base station receives auxiliary information of User Equipment (UE) from the second base station through an inter-base station interface, wherein the auxiliary information comprises: at least part of the power saving signal is configured.

A second aspect of an embodiment of the present disclosure provides an information transmission method, including:

Transmitting auxiliary information of User Equipment (UE) to a first base station through an inter-base station interface, wherein the auxiliary information comprises: at least part of the power saving signal is configured.

A third aspect of an embodiment of the present disclosure provides an information transmission apparatus, including:

A first receiving module configured to receive, by a first base station, auxiliary information of a user equipment UE from a second base station through an inter-base station interface, wherein the auxiliary information includes: at least part of the power saving signal is configured.

A fourth aspect of the present disclosure provides an information transmission apparatus, including:

a second transmitting module configured to transmit auxiliary information of the user equipment UE to the first base station through an inter-base station interface, wherein the auxiliary information includes: at least part of the power saving signal is configured.

A fifth aspect of the disclosed embodiments provides a communication device comprising a processor, a transceiver, a memory and an executable program stored on the memory and capable of being run by the processor, wherein the processor performs the method as provided in the first and/or second aspects when running the executable program.

A sixth aspect of the disclosed embodiments provides a computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method provided in the first and/or second aspect.

In the technical solution provided in the embodiments of the present disclosure, the auxiliary information of the UE is interacted through the inter-base station interface, and at this time, the first base station does not need to request the auxiliary information of the UE from the core network, but receives the auxiliary information of the UE directly from the neighboring base station or from any base station with which the inter-base station interface is established with the base station. Compared with the auxiliary information of the UE requested from the core network, the method reduces the transmission path length of the auxiliary information, reduces the delay of the first base station for acquiring the auxiliary information of the UE, and reduces the signaling interaction times and signaling overhead between the wireless network and the core network.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the embodiments of the invention.

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

FIG. 2 is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

FIG. 3A is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

FIG. 3B is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

FIG. 4 is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

FIG. 5A is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

FIG. 5B is a flow chart illustrating a method of information transmission according to an exemplary embodiment;

fig. 6 is a schematic structural view of an information transmission apparatus according to an exemplary embodiment;

Fig. 7 is a schematic structural view of an information transmission apparatus according to an exemplary embodiment;

fig. 8 is a schematic diagram of a structure of a UE shown according to an example embodiment;

fig. 9 is a schematic diagram illustrating a structure of a base station according to an exemplary embodiment.

Detailed Description

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

Fig. 2 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application. As shown in fig. 2, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: a number of terminals 110 and a number of base stations 120.

Where terminal 110 may be a device that provides voice and/or data connectivity to a user. Terminal 110 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and terminal 110 may be an internet of things terminal such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an internet of things terminal, for example, a fixed, portable, pocket, hand-held, computer-built-in, or vehicle-mounted device. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile Station), remote Station (remote Station), access point, remote terminal (remote terminal), access terminal (ACCESS TERMINAL), user equipment (user terminal), user agent (user agent), user device (user equipment), or user terminal (UE). Or terminal 110 may be a device of an unmanned aerial vehicle. Or the terminal 110 may be a vehicle-mounted device, for example, a car-driving computer with a wireless communication function, or a wireless communication device externally connected with the car-driving computer. Or the terminal 110 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices having a wireless communication function, etc.

The base station 120 may be a network-side device in a wireless communication system. Wherein the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication,4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Or the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network).

The base station 120 may be an evolved node b (eNB) employed in a 4G system. Alternatively, the base station 120 may be a base station (gNB) in a 5G system that employs a centralized and distributed architecture. When the base station 120 adopts a centralized and distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (PACKET DATA Convergence Protocol, PDCP) layer, a radio link layer Control protocol (Radio Link Control, RLC) layer, and a medium access Control (MEDIA ACCESS Control, MAC) layer is arranged in the centralized unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the specific implementation of the base station 120 is not limited in the embodiment of the present application.

A wireless connection may be established between base station 120 and terminal 110 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or the wireless air interface can also be a wireless air interface based on the technical standard of the next generation mobile communication network of 5G.

In some embodiments, an E2E (End to End) connection may also be established between terminals 110. Such as V2V (vehicle to vehicle, vehicle-to-vehicle) communications, V2I (vehicle to Infrastructure, vehicle-to-roadside device) communications, and V2P (vehicle to pedestrian, vehicle-to-person) communications among internet of vehicles communications (vehicle to everything, V2X).

In some embodiments, the wireless communication system described above may also include a network management device 130.

Several base stations 120 are respectively connected to a network management device 130. The network management device 130 may be a core network device in a wireless communication system, for example, the network management device 130 may be a Mobility management entity (Mobility MANAGEMENT ENTITY, MME) in an evolved packet core (Evolved Packet Core, EPC). Or the network management device may be other core network devices, such as a service GateWay (SERVING GATEWAY, SGW), a public data network GateWay (Public Data Network GateWay, PGW), a Policy AND CHARGING Rules Function (PCRF), or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present application is not limited to the implementation form of the network management device 130.

As shown in fig. 2, the present embodiment provides an information transmission method, which includes:

s110: the first base station receives auxiliary information of User Equipment (UE) from the second base station through an inter-base station interface, wherein the auxiliary information comprises: at least part of the power saving signal is configured.

The information transmission method provided by the embodiment of the disclosure can be applied to the first base station. The first base station may be: a base station where the UE currently resides or a base station where the UE is currently connected; or a target base station for the UE handover.

The current UE state may be any of the following: inactive state or idle state.

In some embodiments, the inactive state is mainly for a radio network RAN, in which no RRC connection is established between the UE and the base station, but the inactive state is transparent to the core network, which is not aware of the current lack of RRC connection between the UE and the base station.

The first base station receives the auxiliary information of the UE from the second base station through an inter-base station interface, which may be: a direct connection interface between two base stations, for example, the inter-base station interface includes, but is not limited to: and XN interface. The direct connection ports between the base stations can be used for direct connection and intercommunication between the two base stations.

The XN interface includes: an XN-C (control plane) interface and an XN-U (user plane) interface. In the embodiment of the application, the first base station and the second base station can interact the auxiliary information through an XN-C interface and/or interact the auxiliary information through an XN-U interface.

For example, the second base station stores the assistance information of the UE, and the second base station may be the assistance information of the UE acquired from the core network, or the assistance information received from the UE before the first base station requests the assistance information.

In this way, the auxiliary information of the UE is interacted through the inter-base station interface, and at this time, the first base station does not need to request the auxiliary information of the UE from the core network, but receives the auxiliary information of the UE directly from the neighboring base station or any base station with which the inter-base station interface is established. The second base station here may be any one of the base stations currently storing the UE assistance information. For example, the second base station may include: the base station where the UE was previously camped; or an anchor base station.

The auxiliary information includes: part or all of the power save signal configuration of the UE. The power saving signal is configured to: one or more configuration parameters used by the UE for power save signals. The power saving signal configuration is used for controlling the power saving signal use of the UE. For example, the power save signal configuration may be used to control the behavior of the UE and/or the behavior of the base station; for example, the base station is controlled to issue a power saving signal, the frequency and/or power of the issued power saving signal, and the UE is controlled to monitor the power saving signal or monitor the frequency of the power saving signal.

For example, the power save signal configuration includes, but is not limited to, at least one of:

A support configuration for indicating whether the UE supports use of a power save signal;

Time domain configuration, at least comprising: initial time domain configuration for power save signal usage.

The starting time domain configuration includes, but is not limited to:

The start time of the power saving signal use is offset from the reference time point.

The reference time point includes: the start time of the PO and/or the end time of the PO.

In some embodiments, the time domain configuration further comprises at least one of:

time domain offset of two adjacent power saving signals;

The DRX cycle number of the single power saving signal;

After determining the power saving signal configuration of the UE, the first base station may determine, according to the power saving signal configuration, that the UE is maintained in an awake state during an awake period in one or more DRX cycles on which the power saving signal acts, and at this time, may issue a paging message to page the UE, or issue downlink transmission that needs to be received by the UE on a physical downlink control channel (Physical Downlink Control Channel, PDCCH). The downlink transmission includes, but is not limited to: downlink signaling and/or downlink data.

If the UE is in an idle state, the paging message may be issued by the core network. If the UE is in an inactive state, the paging message is issued by a wireless network, where the wireless network is a network including access network elements such as a base station.

In the embodiment of the application, the first base station can directly receive the auxiliary information from the second base station by utilizing the interface between the base stations, so that compared with the auxiliary information of the UE requested from the core network, the transmission path length of the auxiliary information is reduced, the delay of the first base station for acquiring the auxiliary information of the UE is reduced, and the signaling interaction times and signaling cost between the wireless network and the core network are reduced.

In some embodiments, the power save signal is configured to indicate at least one of:

whether the UE supports the use of the power saving signal in the inactive state or not;

whether the UE supports the use of power saving signals in an idle state or not;

whether the UE expects the use of a power saving signal in an inactive state;

Whether the UE expects the use of a power saving signal in a non-idle state;

When the power saving signal is used in the inactive state, the time domain configuration of the power saving signal;

when the power saving signal is used in the idle state, the time domain configuration of the power saving signal is performed.

In some embodiments, the power save signal configuration includes at least one of the following identifications:

An identifier for identifying whether the UE supports a power saving signal in an inactive state;

an identifier for identifying whether the UE supports the power saving signal in the idle state;

An identification for identifying whether the UE desires to use the power save signal in the inactive state;

an identification for identifying whether the UE desires to use a power save signal in a non-idle state;

A time domain configuration for identifying a power saving signal when the power saving signal is used in an inactive state;

For identifying a time domain configuration of the power save signal when the power save signal is used in an idle state.

In some embodiments, the first base station is provided with a correspondence between a time domain configuration corresponding to the power saving signal when the power saving signal is used in the inactive state and the identifier, so as to determine the time domain configuration of the power saving signal when the power saving signal is used in the inactive state according to the received identifier of the time domain configuration of the power saving signal when the power saving signal is used in the inactive state. The correspondence between the time domain configuration of the power save signal and the identification when the power save signal is used in the inactive state may be specified based on a protocol or obtained from any other network device, such as a core network or other base station.

In some embodiments, the first base station is provided with a correspondence between a time domain configuration corresponding to the power saving signal when the power saving signal is used in the idle state and the identifier, so as to determine the time domain configuration of the power saving signal when the power saving signal is used in the idle state according to the received identifier of the time domain configuration of the power saving signal when the power saving signal is used in the idle state. The correspondence between the time domain configuration of the power save signal and the identification when the power save signal is used in the idle state or the inactive state may be specified based on a protocol or obtained from any other network device, such as a core network or other base station. In some embodiments, the identifier is the power saving signal configuration itself.

For example, some UEs support power save signal usage in the inactive state, and some UEs do not support power save signal usage in the inactive state, at which time it may be indicated by one or more bits in the power save signal whether power save signal usage in the inactive state is supported.

Similarly, some UEs support power save signal usage in the idle state, and some UEs do not support power save signal usage in the idle state, at this time, whether power save signal usage in the idle state is supported may be indicated by one or more bits in the power save signal.

In some embodiments, whether the UE supports the use of power save signals may be dependent on the hardware of the UE.

Some UEs support power saving signal usage in the inactive state and/or the idle state, but the UE may give itself use of power saving signals in the idle state and/or the inactive state with as little power consumption and as little transmission delay as possible according to the self-set load rate, data transmission amount, and/or UE type.

For example, the UE may determine whether to expect use of the power saving signal according to the current remaining power. For example, if the current remaining power is less than or equal to the power threshold, the power saving signal configuration indicates that it is desirable to use the power saving signal in the idle state and/or inactive state to further save power.

For another example, if the UE determines that the remaining power of the UE is higher than the power threshold, it is expected that the power saving signal is not used in the idle state and/or the inactive state through the power saving signal configuration, so that the delay of uplink transmission and/or downlink transmission of the UE is reduced.

The time domain configuration of the power saving signal can be a time domain resource directly or indirectly indicating the use of the power saving signal, a frequency of receiving and transmitting the power saving signal in the time domain, and the like.

In some embodiments, the power saving signal configuration may further include: the frequency domain configuration of the power save signal, for example, the UE receives a bandwidth portion (Band WIDTH PART, BWP) of the power save signal issued by the base station or a Resource Element (RE) of the power save signal.

In still other embodiments, the power save signal configuration may also be: the power configuration, for example, a reception power configuration in which the UE receives the power save signal. If the receiving capability of some UEs is strong, the transmitting power of the base station transmitting the power-saving signal may be relatively small; in order to ensure the reception power of the UE, the base station needs to appropriately enhance the transmission power of the power-saving signal when transmitting the power-saving signal, or to achieve power accumulation by means of diversity gain such as space diversity and/or frequency diversity so as to achieve the minimum reception power defined by the reception power configuration of the power-saving signal received by the UE.

In some embodiments of the present disclosure, the power save signal configuration may be related to the capability of the UE. The terminal capability of different types of UEs is different, for example, some UEs have multiple antenna numbers, strong receiving capability and space diversity receiving capability, so that UEs with different capabilities have power saving signal configuration adapted to the UEs.

In some embodiments, the time domain configuration of the power save signal comprises: and the initial time domain configuration of the power saving signal.

The start time domain configuration of the power save signal may be used to limit the start time of the UE using the power save signal, for example, the start time of the UE receiving the power save signal sent by the base station. If the length of the time range is determined, the specific position of the time range in the time domain depends on the initial time domain configuration of the power saving signal. For example, the length of the time range may be a preset length, a protocol-specified length, or a length negotiated between the UE and the base station.

In some embodiments, the initial time domain configuration herein may include:

time domain resource configuration, the starting times of different time domain resources are different, for example, the starting time domain configuration may include: resource identification of time domain resources. For example, the time domain resources include, but are not limited to, symbols, minislots, slots, subframes, or the like.

In still other embodiments, the starting time domain position of the power saving signal is offset from a reference time point.

The time domain configuration of the reference signal is indirectly indicated by means of such an offset.

During communication between the UE and the base station, some signals are periodically transmitted, and the configuration in the time domain is relatively fixed, for example, the time domain configuration of the PO or the time domain configuration of the CSI-RS of the channel state information reference signal.

In the application, the time domain configuration of the reference signal is indirectly indicated through the offset value, and the indication offset value is compared with the direct indication resource identification, so that the indication can be simplified, and the bit cost can be reduced.

The offsets herein may include: one or more time domain units, which may be: one or more symbols.

In one embodiment, the time domain position of the power save signal is offset from the paging occasion.

In some embodiments, the magnitude of the offset value is related to the type of UE. The UE of the type receives the paging message and the power saving signal by the same receiver or processor, and the initial time domain configuration of the power saving signal may be more similar to the PO of the paging message in time domain; as the receiver or processor has been awakened. In other embodiments, where there are different receivers or processors for the UE of the type receiving the paging message and the power save signal, the initial time domain configuration of the power save signal may be further in the time domain than the PO of the paging message to ensure successful reception of the power save signal, so that the terminal has enough time to wake up the receiver of the power save signal to enter a state of receiving the power save signal. The deviation of the start time of the power saving signal and the PO in the time domain can be represented by the magnitude of the offset.

In some embodiments, the auxiliary information includes at least one of:

Paging probability of the UE;

mobility information of the UE;

and the indication information of the enhanced coverage characteristic of the UE.

The paging probability may be a frequency at which the UE is paged;

time domain configuration of the power saving signal when the power saving signal is used in an inactive state;

time domain configuration of power save signals while using power save signals in idle state.

In some embodiments, the time domain configuration of the power save signal is used in the inactive state, and the parameter values of the time domain configuration of the power save signal are used in the inactive state.

In some embodiments, the time domain configuration of the power save signal in the inactive state is a parameter value of the time domain configuration of the power save signal in the idle state.

In some embodiments, the time domain configuration of the power save signal when the power save signal is used in the inactive state is a parameter used to calculate a parameter value for the time domain configuration of the power save signal when the power save signal is used in the inactive state.

In some embodiments, the time domain configuration of the power save signal when the power save signal is used in the inactive state is a parameter used to calculate a parameter value for the time domain configuration of the power save signal when the power save signal is used in the idle state.

The auxiliary information carries paging probability, mobility information and indication information for enhancing coverage characteristics, so that the density of PO in a time domain can be configured according to the paging probability when the UE is paged conveniently later; and/or determining a paging space range according to the mobile information; and/or determining whether to page in a coverage enhancement mode according to the enhanced coverage characteristics.

For example, for an idle state UE, the paging space may be the entire tracking area (TRACKING AREA, TA), and if the UE is found to have a smaller mobility range than the tracking area based on the mobility information, the paging message may be sent only in the range where the UE is frequently active, instead of paging the UE in the entire TA, in order to reduce signaling overhead. The range over which the UE is often active may be smaller than the UE's TA.

For another example, for inactive UEs, the paging space may be the entire RAN announcement area (RAN Notification Area, RNA), and if the UE is found to have a smaller range of movement than the announcement area based on the movement information, the paging message may be sent only in the range where the UE is frequently active, rather than paging the UE in the entire TA, in order to reduce signaling overhead. The range over which the UE is frequently active may be smaller than the notification area of the UE.

For example, to ensure successful reception of the paging message by the UE, it may be determined whether to configure enhanced coverage resources for transmitting the paging message based on enhanced coverage characteristics of the UE. The enhanced coverage resources include, but are not limited to, at least one of:

Time domain resources;

Frequency domain resources;

Airspace resources.

For example, a paging message may be sent on m resources before enhanced coverage resources are not configured, and after enhanced coverage resources are configured, a paging message paging the UE may be sent on m+n resources. Here m and n are both positive integers. By enhancing the configuration of the coverage resources, the probability of successful paging of the UE can be improved.

In some embodiments, as shown in fig. 3A, the method further comprises:

S100: and sending the request information to the second base station through the interface between the base stations. The request information is used for requesting auxiliary information of the UE from the second base station; the request information may be sent to the second base station through the inter-base station interface, and the second base station may return the auxiliary information to the first base station through the inter-base station interface, or may transmit the auxiliary information to the first base station through other modes such as a backhaul link. I.e. here the request information is sent by the inter-base station interface to the second base station, can be used alone. The request information is used to request auxiliary information from the second base station.

As shown in fig. 3B, the S110 includes: s111;

S111: the first base station receives the auxiliary information sent according to the request information from the second base station through an inter-base station interface.

In some embodiments, the second base station may actively send the assistance information to the first base station, e.g., the UE is handed off from the second base station to the first base station; the second base station is used as an anchor base station and actively synchronizes the auxiliary information of the UE to the target base station (i.e., the first base station), and at this time, the first base station may not send the request information to the second base station.

In some cases, the second base station may not know which base station the first base station is specifically, or the second base station has not synchronized the auxiliary information of the UE to the first base station, but the first base station wants to know the auxiliary information of the UE, and then actively sends the request information to request the auxiliary information of the UE. At this time, the auxiliary information received in step S110 is the auxiliary information returned by the second base station under the trigger of the request information.

In some embodiments, the assistance information is sent by the second base station based on a request of the first base station; or, the auxiliary information is sent by the second base station based on the protocol specification.

In some embodiments, the S100 may include:

and sending a request for acquiring the UE context carrying the request information to the second base station through an inter-base station interface.

In an embodiment of the present application, the acquire UE context request (Retrieve UE Context Request). The UE context acquisition request here is a request from the target base station to the anchor base station for UE context when the UE moves to a new target base station. In the embodiment of the present application, the request information is carried in the UE context request, for example, the request information may be indicated by one or more bits in the UE context request. For example, the request information may be carried by a reserved bit or a reserved IE in the UE. In the embodiment of the application, the UE context request is multiplexed and acquired to carry the request information, and a signaling transmitted between base stations is not required to be specially configured for the request information, so that the signaling interaction times and signaling cost between the base stations can be reduced.

In some embodiments, the S110 may include:

And the first base station receives the UE context acquisition request response carrying the auxiliary information from the second base station through an inter-base station interface.

In some embodiments, the second base station may actively transmit the auxiliary information of the UE to the first base station through the inter-base station interface, and the message for transmitting the auxiliary information may be any message that may be transmitted through the inter-base station interface. In the embodiment of the present application, the auxiliary information is carried in the UE context request response. The auxiliary information can be carried by one or more newly added bits or reserved bits in the acquired UE context request response, so that the purpose that the acquired UE context request response which can be transmitted by the inter-base station interface is multiplexed to transmit the auxiliary information is achieved, and signaling transmitted between base stations is not required to be configured specially for the auxiliary information, so that the signaling interaction times and signaling cost between the base stations can be reduced.

In some embodiments, the get UE context request response is returned based on a get UE context request of the first base station;

Or alternatively

The acquire UE context request response is sent by the second base station based on a protocol specification.

For example, in some cases, the get UE context request response may be sent by the second base station without the first base station request, and thus the get UE context request response may be sent actively by the second base station, which is actively sent according to the protocol specification.

In some cases, if the protocol does not specify that the second base station needs to actively transmit, or if the second base station fails to transmit, the first base station sends a request for acquiring the UE context, and the acquiring context at this time is that the request response is returned according to the request for acquiring the UE context.

In some embodiments, the obtaining the UE context request response further comprises: the context of the UE;

the auxiliary information and the acquired UE context are located in different information elements IEs;

Or alternatively

The auxiliary information and the UE context are located in the same IE.

The auxiliary information and the UE context may be located in the same IE or in different IEs, which may be configured according to the communication requirements.

For example, in some embodiments, the acquire UE context request response is newly augmented with an IE for carrying auxiliary information of the UE.

The IE is dedicated to carrying the assistance information. And the UE context is still carried in an IE which is scheduled to carry the UE context in the UE context acquisition request response.

In one embodiment, this IE may be referred to as a UE radio capability (UE Radio Capability for Paging) IE.

For another example, there are some reserved bits or reserved fields in the IE that is scheduled to carry the UE context, and the auxiliary information may also be carried in the reserved bits or reserved fields in the IE that is scheduled to carry the UE context.

In some embodiments, the S110 may include:

The first base station receives the radio network RAN paging message carrying the auxiliary information from the second base station through an inter-base station interface.

The interaction of the auxiliary information of the UE between the first base station and the second base station is not limited to the above-mentioned acquisition of the UE context request response, but may be a paging message.

For example, the paging message for the inactive UE is itself formed and issued by the base station of the RAN. For example, if the UE is in an inactive state and the base station receives a paging trigger event such as a message to be sent to the UE, the base station where the UE resides or is connected, i.e., the anchor base station, may form and broadcast a RAN paging message, and forward the RAN paging message to other base stations in a notification area (RNA) or in a paging range smaller than the RNA. In this embodiment of the present application, the second base station directly carries the auxiliary information in the RAN paging message, so that the first base station receives the auxiliary information of the UE while receiving the RAN paging message for paging the UE.

For example, the RAN paging message further includes: radio paging information for paging the UE;

the radio paging information and the auxiliary information are located in different IEs;

Or alternatively

The radio paging information and the auxiliary information are located in the same IE.

For example, in some embodiments, the RAN paging message is newly added with an IE that is dedicated to carrying the assistance information. The newly added IE is different from the UE radio capability (UE Radio Capability for Paging) IE already in the RAN paging message for UE paging. As another example, a UE radio capability (UE Radio Capability for Paging) IE for UE paging within the RAN paging message; included within this UE Radio Capability for Paging IE is UE-Radio Paging Info IE.

At UE Radio Capability for Paging) the IE or UE-Radio Paging Info IE has some reserved bits or reserved fields, and the side information may also be carried in reserved bits or reserved fields in UE-Radio Paging Info IE.

As shown in fig. 4, the present embodiment provides an information transmission method, including:

s210: transmitting auxiliary information of User Equipment (UE) to a first base station through an inter-base station interface, wherein the auxiliary information comprises: at least part of the power saving signal is configured.

The information transmission method in the embodiment of the application can be applied to the second base station, and in the embodiment of the application, the second base station can actively or based on the triggering of the request information sent by the first base station, and sends the auxiliary information through the interface between the base stations, thereby realizing the direct connection transmission of the auxiliary information between the base stations.

The assistance information is transmitted over the inter-base station interface, the assistance information including all or part of a power save signal configuration of the UE, the power save signal configuration being configured to control the UE to use one or more configuration parameters of the power save signal.

whether the UE expects the use of a power saving signal in an inactive state;

Whether the UE expects the use of a power saving signal in a non-idle state;

The description of the initial time domain configuration herein may be found in the previous embodiments and will not be repeated here.

The initial time domain configuration includes: and the offset of the initial time domain position of the power saving signal relative to the reference time point.

In some embodiments, the reference point in time may be a paging occasion. As such, the offset of the time domain position of the power saving signal relative to the reference time point includes, but is not limited to: and the time domain position of the power saving signal is offset relative to the paging occasion.

In some embodiments, the power save signal configuration includes at least one of the following identifiers:

In some embodiments, the auxiliary information further comprises at least one of:

Paging probability of the UE;

mobility information of the UE;

Indication information of enhanced coverage characteristics of the UE;

The detailed description of any one of paging probability, mobility information and indication information of enhanced coverage characteristics of the UE may be referred to in any of the foregoing embodiments, and will not be repeated here.

In some embodiments, the method further comprises:

S200: the request information is received through the inter-base station interface. The request message is for requesting assistance information of the UE. After the second base station receives the request message, the second base station can return auxiliary information to the first base station through an inter-base station interface, and can also return auxiliary information to the first base station through a return link or other modes, and the transmission path length of the first base station for acquiring the auxiliary information can be reduced no matter which mode the second base station directly transmits the auxiliary information to the first base station.

The S210 may include: and according to the request information, the auxiliary information is sent to the first base station through an inter-base station interface.

In some embodiments, the S200 may include: and receiving a request for acquiring the UE context sent by the first base station and carrying the request information through the interface between the base stations.

By acquiring the UE context request to carry the request information, multiplexing of message signaling is realized, interactive signaling between base stations is simplified, and signaling overhead is reduced.

In some embodiments, as shown in fig. 5A, the S210 may include: s211:

s211: and sending a UE context acquisition request response carrying the auxiliary information to the first base station through an inter-base station interface.

By acquiring the UE context request response to carry the request information, multiplexing of message signaling is realized, interactive signaling between base stations is simplified, and signaling overhead is reduced.

In some embodiments, the get UE context request response is sent based on a get UE context request of the first base station;

Or alternatively

The get UE context request response is sent based on a protocol specification.

The get UE context request response may be actively sent by the second base station, e.g. according to a protocol convention or according to a pre-negotiation with other base stations within the TA or NA of the UE, which actively sends the get UE context request response carrying the assistance information.

In some embodiments, the get UE context request response may be formed and sent in accordance with the get UE context request.

Notably, are: if the second base station does not have the UE context currently, the UE context carried in the UE context acquisition request response may be null. If the second base station does not have the auxiliary information of the UE but has the context of the UE, the UE context carried by the UE context request response is acquired, and the auxiliary information carried by the UE context request response may be null. If the second base station does not have the auxiliary information of the UE and also has the UE context, the auxiliary information and the UE context which are not empty are carried in the UE context acquisition request response. In this way, the first base station receives the null assistance information or UE context, and knows that the second base station lacks the assistance information or UE context of the UE.

Or alternatively

The auxiliary information and the UE context are located in the same IE.

For example, in some embodiments, the acquire UE context request response is newly augmented with a UE radio capability (UE Radio Capability for Paging) IE for UE paging, which is dedicated to carrying the assistance information. And the UE context is still carried in an IE which is scheduled to carry the UE context in the UE context acquisition request response.

In some embodiments, the S210 may include:

s212: and sending a radio network RAN paging message carrying the auxiliary information to the first base station through an inter-base station interface.

The auxiliary information can be carried and interacted in the RAN paging message, so that the interaction of the auxiliary information of the UE can be realized without introducing new signaling, and the method has the characteristics of strong compatibility with the prior art and small signaling overhead.

In some embodiments, the RAN paging message further comprises: radio paging information for paging the UE; the radio paging information and the auxiliary information are located in different IEs;

Or alternatively

As shown in fig. 6, an embodiment of the present application provides an information transmission apparatus, including:

A first receiving module 601, configured to receive, by a first base station, auxiliary information of a user equipment UE from a second base station through an inter-base station interface, where the auxiliary information includes: at least part of the power saving signal is configured.

In some embodiments, the first receiving module 601 may include: a program module; the program modules, when executed by the processor, enable interaction of auxiliary information via the inter-base station interface.

In still other embodiments, the first receiving module 601 may include: a soft-hard combination module; the soft and hard combined module comprises a programmable array; the programmable array includes, but is not limited to: a field programmable array or a complex programmable array.

In still other embodiments, the first receiving module 601 may further include: a pure hardware module; the pure hardware modules include, but are not limited to, application specific integrated circuits.

whether the UE expects the use of a power saving signal in an inactive state;

Whether the UE expects the use of a power saving signal in a non-idle state;

In some embodiments, the time domain configuration of the power save signal comprises:

and the initial time domain configuration of the power saving signal.

In some embodiments, the starting time domain configuration comprises:

And the offset of the initial time domain position of the power saving signal relative to the reference time point.

In some embodiments, the reference time point comprises:

paging occasions.

Paging probability of the UE;

mobility information of the UE;

Indication information of enhanced coverage characteristics of the UE;

In some embodiments, the apparatus further comprises:

The first sending module is configured to send request information to the second base station through the interface between the base stations;

The first receiving module 601 is configured to receive, from the second base station, the auxiliary information sent according to the request information through an inter-base station interface by the first base station.

In some embodiments, the first sending module is configured to send, to the second base station, a UE context acquisition request carrying the request information through an inter-base station interface.

In some embodiments, the first receiving module 601 is configured to receive, from the first base station, a UE context acquisition request response carrying the assistance information from the second base station through an inter-base station interface.

Or alternatively

The auxiliary information and the UE context are located in the same IE

In some embodiments, the first receiving module 601 is configured to receive, by the first base station, a radio network RAN paging message carrying the assistance information from a second base station via an inter-base station interface.

In some embodiments, the RAN paging message further comprises: radio paging information for paging the UE;

Or alternatively

As shown in fig. 7, an embodiment of the present disclosure provides an information transmission apparatus, including:

A second transmitting module 701, configured to transmit auxiliary information of the user equipment UE to the first base station through an inter-base station interface, where the auxiliary information includes: at least part of the power saving signal is configured.

In some embodiments, the second transmitting module 701 may include: a program module; the program modules, when executed by the processor, enable interaction of auxiliary information via the inter-base station interface.

In still other embodiments, the second transmitting module 701 may include: a soft-hard combination module; the soft and hard combined module comprises a programmable array; the programmable array includes, but is not limited to: a field programmable array or a complex programmable array.

In still other embodiments, the second transmitting module 701 may further include: a pure hardware module; the pure hardware modules include, but are not limited to, application specific integrated circuits.

whether the UE expects the use of a power saving signal in an inactive state;

Whether the UE expects the use of a power saving signal in a non-idle state;

In some embodiments, the time domain configuration of the power save signal includes at least one of:

and the initial time domain configuration of the power saving signal.

In some embodiments, the starting time domain configuration comprises:

In some embodiments, the reference point comprises: paging occasions.

Paging probability of the UE;

mobility information of the UE;

Indication information of enhanced coverage characteristics of the UE;

In some embodiments, the apparatus further comprises:

A second receiving module configured to receive the request information through the inter-base station interface;

the second sending module 701 is configured to send the auxiliary information to the first base station through an inter-base station interface according to the request information.

In some embodiments, the second sending module 701 is configured to send, by receiving, through the inter-base station interface, the UE context acquisition request carrying the request information from the first base station.

In some embodiments, the second transmitting module 701 is configured to

And sending a UE context acquisition request response carrying the auxiliary information to the first base station through an inter-base station interface.

Or alternatively

The get UE context request response is sent based on a protocol specification.

the auxiliary information and the UE context are located in different information elements IEs;

Or alternatively

The auxiliary information and the UE context are located in the same IE

In some embodiments, the second sending module 701 is configured to send a radio network RAN paging message carrying the assistance information to the first base station through an inter-base station interface.

Or alternatively

Several specific examples are provided in connection with any of the embodiments described above:

Example 1:

In the narrowband communication of R15, only the application of the power saving signal in the idle state is considered. At this time, the auxiliary information supported by the UE for the power saving signal is reported to the base station through the UE capability (UE-RadioPagingInfo) in the connected state, and then the base station notifies the core network through a UE capability information notification (UE capacity info notification) message to the core network. Thereafter, the core network adds UE-to-power save signal supported assistance information (UE Radio Capability for Paging), including UE capability (UE-RadioPagingInfo), to the paging message sent to the RAN. If the mechanism is introduced to an inactive state in the NR, at this time, the base station needs to acquire the UE capability if it needs to initiate a paging message to the UE. The method protects the auxiliary information supported by the UE for the power saving signal during interaction between the interfaces of the base stations, and thus, the base stations are prevented from getting the information from the core network.

Example 2: and transmitting auxiliary information supported by the UE for the power saving signal during interaction among the interfaces of the base stations, wherein the auxiliary information can be used for indicating at least one of the following: whether the UE supports the power saving signals in the inactive state and/or the idle state, and whether the UE wishes to use the power saving signals in the active state and/or the idle state; when the power saving signal is used in the active state and/or the idle state, the power saving symbol start-stop time configuration may be an offset value offset with respect to a certain reference point, such as an offset value with respect to paging PO; the offset value is closely related to the implementation of the UE; paging probability (Paging Probability) of the user equipment, the information being obtained by the base station from the core network; mobility information of the user equipment (the information is implemented by a base station algorithm);

whether the user equipment supports coverage enhancement features.

In some cases, a request instruction for acquiring auxiliary information supported by the UE for the power saving signal is added in the inter-base station interaction message RETRIEVE UE CONTEXT REQUEST; as an embodiment, this may be explicitly indicated by a flag, whose value of "1" means that auxiliary information needs to be requested. In some cases, the response of the UE to the assistance information supported by the power save signal is added to the inter-base station interaction message RETRIEVE UE CONTEXT REQUEST. As an embodiment, the request identifier adds auxiliary information supported by the UE for the power saving signal in the response of acquiring the context. As an embodiment, the auxiliary information supported by the UE for the power saving signal may be added in the response for acquiring the context based on a predetermined protocol specification. As an embodiment, UE Radio Capability for Paging IE is added to RETRIEVE UE CONTEXT REQUEST to carry auxiliary information supported by the UE for the power saving signal.

Example 3:

and transmitting auxiliary information supported by the UE for the power saving signal during interaction among the interfaces of the base stations, wherein the auxiliary information can be used for indicating at least one of the following: whether the UE supports the power saving signals in the inactive state and/or the idle state, and whether the UE wishes to use the power saving signals in the active state and/or the idle state; when the power saving signal is used in the active state and/or the idle state, the power saving symbol start-stop time configuration may be an offset value offset with respect to a certain reference point, such as an offset value with respect to paging PO; the offset value is closely related to the implementation of the UE; paging probability (Paging Probability) of the user equipment, the information being obtained by the base station from the core network;

mobility information of the user equipment (the information is implemented by a base station algorithm);

whether the user equipment supports coverage enhancement features.

Auxiliary information for acquiring the UE supporting the power saving signal is added in the inter-base station interaction message RAN PAGING. As an implementation manner, the auxiliary information supported by the UE for the power saving signal may be added with an IE in the message to carry the auxiliary information supported by the UE for the power saving signal; as an embodiment, the auxiliary information supported by the UE for the power saving signal may extend the original UE-RadioPagingInfo to carry the auxiliary information supported by the UE for the power saving signal.

The embodiment of the application provides a communication device, which comprises a processor, a transceiver, a memory and an executable program stored on the memory and capable of being operated by the processor, wherein the processor executes the information transmission method provided by any of the technical schemes when the executable program is operated by the processor, for example, the information transmission method is applied to a first base station and/or a second base station; for example, at least one of the methods shown in fig. 2, 3A, 3B, 4, 5A, and/or 5B.

The communication device may be the first base station or the second base station described above.

The processor may include, among other things, various types of storage media, which are non-transitory computer storage media capable of continuing to memorize information stored thereon after a power down of the communication device. Here, the communication device includes a base station or a user equipment.

The processor may be coupled to the memory via a bus or the like for reading an executable program stored on the memory, for example, at least one of the methods shown in fig. 2 or 5.

An embodiment of the present application provides a computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing a method according to any of the aspects of the first or second aspect, e.g. at least one of the methods shown in fig. 2, 3A, 3B, 4, 5A and/or 5B.

Fig. 8 is a block diagram of a UE (UE) 800, shown in accordance with an exemplary embodiment. For example, the UE800 may be a mobile phone, a computer, a digital broadcast user equipment, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 8, ue800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the UE800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the UE 800. Examples of such data include instructions for any application or method operating on the UE800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the UE 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the UE 800.

The multimedia component 808 includes a screen between the UE800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the UE800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the UE800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor component 814 includes one or more sensors that provide status assessment of various aspects for the UE 800. For example, the sensor component 814 may detect an on/off state of the device 800, a relative positioning of components, such as a display and keypad of the UE800, the sensor component 814 may also detect a change in position of the UE800 or a component of the UE800, the presence or absence of user contact with the UE800, an orientation or acceleration/deceleration of the UE800, and a change in temperature of the UE 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the UE800 and other devices, either wired or wireless. The UE800 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the UE800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of UE800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

As shown in fig. 9, an embodiment of the present disclosure shows a structure of a base station. For example, base station 900 may be provided as a network-side device. Referring to fig. 9, base station 900 includes a processing component 922 that further includes one or more processors and memory resources represented by memory 932 for storing instructions, such as applications, executable by processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, processing component 922 is configured to execute instructions to perform any of the methods previously described above as applied to the base station, e.g., as shown in fig. 2-3.

Base station 900 may also include a power component 926 configured to perform power management for base station 900, a wired or wireless network interface 950 configured to connect base station 900 to a network, and an input output (I/O) interface 958. The base station 900 may operate based on an operating system stored in memory 932, such as Windows Server TM, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An information transmission method, wherein the method is performed by a first base station, comprising:

Receiving a radio access network paging message RAN PAGING paging a user equipment UE from a second base station over an inter-base station interface, wherein said RAN PAGING comprises user equipment radio paging information UE-RadioPagingInfo; the UE-RadioPagingInfo indicates the capability associated with power save signals when paging the UE.

2. The method of claim 1, wherein the UE-RadioPagingInfo is configured to indicate whether the UE supports reception of paging-related power save signals.

3. The method according to claim 1 or 2, wherein the UE is in an idle state and/or inactive state.

4. A method according to any one of claims 1 to 3, wherein the UE-RadioPaingInfo is further configured to instruct the UE to receive frequency domain resources of the power save signal.

5. An information transmission method, wherein the information transmission method is performed by a second base station, comprising:

Transmitting a radio access network paging message RAN PAGING paging the user equipment UE to the first base station over the inter-base station interface, wherein said RAN PAGING comprises user equipment radio paging information UE-RadioPagingInfo; the UE-RadioPagingInfo indicates the capability associated with power save signals when paging the UE.

6. The method of claim 5, wherein the UE-RadioPagingInfo is configured to indicate whether the UE supports reception of paging-related power save signals.

7. The method of claim 5 or 6, wherein the UE is in an idle state and/or an inactive state.

8. The method of any of claims 5-7, wherein the UE-RadioPaingInfo is further configured to instruct the UE to receive frequency domain resources of the power save signal.

9. The method according to any one of claims 5 to 8, wherein the method further comprises:

Receiving the UE-RadioPagingInfo sent by a core network; or alternatively

And receiving the UE-RadioPagingInfo reported by the UE.

10. The method of any of claims 8 to 9, wherein the UE-RadioPagingInfo is generated based on a capability of the UE.

11. A first base station, comprising:

A receiving module configured for receiving paging User Equipment (UE) from the second base station via the inter-base station interface

A radio access network paging message RAN PAGING, wherein said RAN PAGING comprises user equipment radio paging information UE-RadioPagingInfo; the UE-RadioPagingInfo indicates the capability associated with power save signals when paging the UE.

12. A second base station, comprising:

A transmission module configured to transmit a radio access network paging message RAN PAGING paging a user equipment UE to a first base station over an inter-base station interface, wherein the RAN PAGING includes user equipment radio paging information UE-RadioPagingInfo; the UE-RadioPagingInfo indicates the capability associated with power save signals when paging the UE.

13. A communication device comprising a processor, a transceiver, a memory and an executable program stored on the memory and capable of being run by the processor, wherein the processor performs the method as provided in any one of claims 1 to 4 or 5 to 10 when the executable program is run by the processor.

14. A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method as provided in any one of claims 1 to 4 or 5 to 10.