WO2011000160A1

WO2011000160A1 - Message informing method and device

Info

Publication number: WO2011000160A1
Application number: PCT/CN2009/072593
Authority: WO
Inventors: 张亮亮; 常俊仁; 李亚娟; 李婷; 刘宇红; 蔺波
Original assignee: 华为技术有限公司
Priority date: 2009-07-02
Filing date: 2009-07-02
Publication date: 2011-01-06
Also published as: CN102204348A; CN102204348B

Abstract

A message informing method and device are provided. The method includes: receiving a handover indication message; acquiring indication information and new information from the handover indication message, so as to know the service station is not changed, needing no network handover; according to the new information, updating the content related to the new information. Through the method, handover flow is optimized, handover efficiency is improved, and network resources are saved.

Description

Message notification method and device

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a message notification method and apparatus. Background technique

In order to improve the data throughput of the cell edge users and also to expand the cell coverage area, a relay node has been introduced in the 3GPP LTE-ADVANCED system, and the relay node includes a fixed relay, a nomadic relay, and a mobile relay. .

For the LTE-ADVANCED system, each base station eNB (evolved NodeB) or relay station RN (relay node) needs a physical cell identifier (PCID) to transmit the PCID (hysical-layer cell ID). UE (User Equipment User Equipment) downlink synchronization. The PCID consists of a PSS (rimary synchronization signal) and a SSS (secondary synchronization signal). A total of 504 PCIDs are available for use in LTE-ADVANCED. In addition, the cell uses the physical cell to indicate the PCID as the scrambling code of the cell, and the uplink and downlink data of the cell are scrambled by the PCID to distinguish it from the neighboring cell.

The relay station has the possibility of PCID change. When the PCID of the relay station changes, according to the existing process, the subordinate base station needs to initiate a network handover procedure, re-search the network, and re-access the original relay station with the PCID change. This process wastes network resources. , the problem of low switching efficiency. Summary of the invention

The embodiment of the invention provides a message notification method and system to optimize the network switching process and improve efficiency.

According to an embodiment of the invention, a message notification method includes:

Receiving the handover indication information, where the handover indication information includes: indication information and new information, where the indication information indicates that network handover is not performed;

Obtaining the indication information and the new information from the handover indication information, knowing that the service station is unchanged, and not performing network handover;

Update content related to new information based on new information. According to an embodiment of the invention, a PCID notification method includes:

Receiving the handover indication information, where the handover indication information includes: indication information and a new PCID, where the indication information indicates that network handover is not performed;

Obtaining the indication information and the new PCID from the handover indication information, knowing that the service station is unchanged, and not performing network handover;

Update the PCID-related information with the new PCID. According to another embodiment of the present invention, a terminal is provided, including:

a receiving unit, configured to receive switching indication information;

An obtaining unit, configured to obtain indication information, new information from the handover indication information, and learn that the service station is unchanged according to the indication information, and does not need to perform network handover;

An update unit for updating information related to new information. According to another embodiment of the present invention, a service site is provided, including:

An acquisition unit for obtaining a new PCID;

a generating unit, configured to generate a handover indication information, where the handover indication information includes: indication information and a new PCID, where the indication information indicates that network handover is not performed;

The notification unit is configured to send the handover indication information to the terminal of the subordinate to notify the terminal that the service station belongs to the same, the PCID changes, and no network handover is required;

A change unit that is used to change information related to the PCID. According to an embodiment of the present invention, when the information of the service station changes, the service station sends the indication information to the subordinate terminal, indicating that the subordinate terminal only changes the information but does not perform the handover, optimizes the handover process, improves the handover efficiency, and saves the network. Resources. DRAWINGS

1 is a schematic diagram of a handover process of a terminal in the prior art;

2 is a schematic flow chart of an embodiment of a message notification method according to the present invention; 3 is a schematic flowchart of another embodiment of a message notification method according to the present invention; FIG. 4 is a schematic flowchart of another embodiment of a message notification method according to the present invention; FIG. 6 is a schematic flowchart of another embodiment of a message notification method according to the present invention; FIG. 7 is a schematic flowchart of another embodiment of a message notification method according to the present invention; FIG. 9 is a schematic flowchart of another application example of a message notification method according to the present invention; FIG. 10 is a schematic flowchart of another application example of a message notification method according to the present invention; FIG. 11 is a schematic flowchart diagram of another application example of a message notification method according to the present invention; FIG. 12 is a schematic structural diagram of an embodiment of a terminal provided by the present invention;

FIG. 13 is a schematic structural diagram of an embodiment of a service site provided by the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the LTE system, when the terminal UE (User Equipment User Equipment) moves from one cell to another, it needs to switch from the original serving eNB to the target eNB where the incoming cell is located. Referring to FIG. 1, the handover process includes:

S101: The serving eNB makes a handover decision based on the measurement report and the radio resource management information. S102: The serving eNB sends a handover request message to the target eNB, and carries the necessary information to the target eNB to perform handover preparation.

The necessary information includes: context reference information of the X2 signaling of the UE on the serving eNB side,

The S1EPC signaling context reference information of the UE, the target cell ID, the RRC context information (including the C-RNTI of the UE on the serving eNB side), the access layer configuration information (excluding the physical layer configuration information), and the EPS bearer context information. The EPS bearer context contains the necessary radio network layer and transport network layer information as well as the QoS parameters of the EPS bearer. SI 03: The target eNB performs admission control according to the received QoS information of the EPS bearer to increase the probability of successful handover;

If the target eNB has sufficient resources, the target eNB configures the requested resource according to the received QoS information of the EPS bearer, and reserves a C-RNTK Cell Radio Network Temporary Identifier for the UE. Optionally, the target eNB may reserve a random access preamble for the UE.

S104: The target eNB sends a handover request acknowledgement message to the serving eNB.

The handover request acknowledgement message packet ^""transparent container, which is sent to the UE as a distribution of the handover command. The transparent container packet ^~ a new C-RNTI, the security algorithm identifier of the target eNB for selecting the security algorithm It can also contain a dedicated random access Preamble and an indication of the end time of the dedicated Preamble. It can also contain other parameters, such as system information blocks.

S105: The serving eNB sends a handover command message to the UE.

The handover command message contains the transparent container eNB to perform the necessary encryption and integrity protection operations on the handover command message. The switch command contains the necessary information to perform the switch. The necessary information may include: a PCID of the target cell, a new C-RNTI, a security algorithm identifier of the target eNB, and optionally an indication of a dedicated random access Preamble and a dedicated Preamble termination time, and System information block of the target eNB, and the like. The UE does not need to delay the execution of the handover due to the feedback of performing HARQ/ARQ.

S106: After receiving the handover command, the UE performs a synchronization process with the target eNB and accesses the target cell. If a dedicated random access Preamble is allocated in the handover command, non-contention random access is performed. Otherwise, access the target cell in a competitive manner.

In an LTE-Advance system including a relay station, each eNB manages a plurality of relay stations belonging to its cell, and each relay station manages a plurality of terminals belonging thereto. The system assigns a corresponding PCID to each eNB and the relay station, and the base station periodically transmits its PCID, so that the relay station or the terminal subordinate to the base station synchronizes with the downlink through the PCID; the relay station periodically transmits its PCID, so that the terminal subordinate to the relay station passes the PCID with the PCID. Downstream synchronization. Due to the limited number of PCIDs, there is a need for PCID multiplexing. Relay stations between different cells may be assigned the same PCID by their respective base stations, and base stations in the same cell may also be assigned the same in distant relay stations. PCID. When the mobile relay located in the first cell moves to the second cell, the original PCID of the mobile relay may be the same as the PCID of a certain relay station in the second cell, and the two may interfere with each other, so that the respective subordinates may receive In addition, the synchronization signal of the relay station. Similarly, when a relay station moves within the cell range, the same situation as the neighboring relay station PCID may occur. In the event of such a PCID collision, the relay station is required to change its PCID. When the PCID of the relay station changes, the subordinate terminal cannot synchronize with the relay station, but needs to perform network handover and switch to the original relay station whose PCID has changed. This process has the problem of wasting network resources and low handover efficiency.

As shown in FIG. 2, the present invention provides an embodiment of a message notification method, including: S201: A terminal receives handover indication information, where the handover indication information includes indication information and new information.

The new information is information used by the service station that communicates with the terminal, and the new information may be the identifier of the service site or the frequency with which the service site communicates with the terminal. For example, the new information may include a new PCID; a new first frequency; or a new PCID and a new first frequency.

The indication information indicates that the service station to which the terminal belongs is unchanged, and no handover is required. The indication information may be an explicit indication identifier, for example, the information indicating that one bit is included in the handover indication information indicates that the service station is unchanged, and no network handover is required; the indication information may also be an implicit identifier, for example, using a specific or special The command message carries new information, implicitly notifying the terminal that its home service station is unchanged, and does not need to perform network switching.

In the second scheme, the switching indication information may include: indication information, new information, and change time. Used to notify the terminal that the service site will use the new information when the change time arrives. The change time can be either an absolute frame number or a relative frame number, that is, starting with the current frame receiving the indication information. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the service site. In general, the change time is not 0; if the change time is 0, the effect is the same as the unspecified change time.

S202: The terminal obtains the indication information and the new information from the handover indication information.

The terminal knows that the service station of the terminal does not need to perform network switching and other related processes according to the indication information.

In the second solution, the terminal obtains indication information, new information, and more from the handover indication information. change the time.

S203: Update content related to the new information according to the new information;

The terminal learns that the service station of the terminal does not change according to the indication information, but the new information of the service station changes, and no network handover is required. The terminal changes the content related to the new information, for example, changes the PCID or frequency-related information of the service site. More specifically for the PCID, the terminal changes the PCID-related information in the system based on the new information, such as information related to the PCID during the scrambling code generation process in the system.

In the second scheme, when the change time arrives, the terminal changes the content related to the new information, for example, changes the PCID or frequency-related information of the service site. More specifically for the PCID, the terminal changes the information related to the PCID in the system according to the new information, such as information related to the PCID in the system during the generation of the special code.

In addition, the terminal can synchronize with the service site with new information.

Correspondingly, the service site changes and sends a new PCID; in another embodiment, the service site changes and sends a new PCID when the change time arrives. In addition, the service site will also change the PCID-related information in the system, such as generating a new 4-code sequence using the new PCID.

S204: Optionally, the terminal sends a PCID change confirmation message.

The terminal sends a PCID change confirmation message to the service site to notify the service site to complete the change process.

There is no strict execution order between step S203 and step S204, and it can be executed in any order. In this embodiment, when the service-related information of the service station to which the terminal belongs changes, but the home service station does not change, the service station sends the indication information to the subordinate terminal, indicating that the subordinate terminal only changes the information but does not switch. Optimize the switching process, improve switching efficiency, and save network resources. As shown in FIG. 3, the present invention provides another embodiment of a message notification method, which is used to notify a subordinate terminal when a PCID of a service site is changed, and instructs its subordinate terminal not to perform network switching. The process includes:

S301: The terminal receives the second handover indication information, where the second handover indication information is used to indicate that the service station to which the terminal belongs is unchanged, but the service site PCID is changed, and the handover procedure is not performed. The first The second handover indication information includes indication information, a new PCID. The indication information indicates that the service station to which the terminal belongs is unchanged, and no handover is required. The indication information may be an explicit indication identifier, for example, the information indicating that one bit is included in the handover indication information indicates that network handover is not required; the indication information may also be an implicit identifier, for example, carrying a new information by using a specific or special instruction message. It implicitly informs the terminal that its home service station is unchanged, and does not need to perform network switching.

When the PCID of the service station is changed, the second handover indication information is sent to the subordinate terminal, and the second handover indication information includes the indication information, the new PCID. In the second scheme, the second switching indication information may include: indication information, new PCID, and change time. Used to notify the terminal: The service site will use the new PCID when the change time arrives. The change time may be an absolute frame number or a relative frame number, that is, the start of the current frame in which the second handover indication message is received. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the service site. In general, the change time is not 0; if the change time is 0, the effect is the same as the unspecified change time. In the third scheme, the second handover indication information may include: indication information, a new PCID, a change time, and a new operating frequency. Used to inform the terminal: The service station will send a new PCID with the new working frequency when the change time arrives. In the fourth scheme, the second handover indication information may include: indication information, a new PCID, and a new operating frequency. Used to inform the terminal: The service station will use the new working frequency to send a new PCID.

S302: The terminal obtains indication information, a new PCID, from the second handover indication information.

The terminal learns that the service site of the terminal does not change according to the indication information and the new PCID, but the PCID of the service site changes, and no network handover is required.

In the second solution, the terminal obtains the indication information, the new PCID, and the change time from the second handover indication information. In the third scheme, the terminal obtains the indication information, the new PCID, and the change time from the second handover indication information. The new working frequency; in the fourth solution, the terminal obtains the indication information, the new PCID, and the new working frequency from the second switching indication information.

The new working frequency may be an operating frequency of one carrier or an operating frequency of multiple carriers. In particular, for an LTE-A system to which carrier aggregation is applied, the operating frequency between the service station and the terminal may be on multiple carriers. Specifically, the new operating frequency may be a frequency of one carrier, such as F1 (ie, the center frequency of the carrier). Point) or the frequency of multiple carriers such as F3, F4 and F5. LTE-A Carrier aggregation refers to the convergence of two or more component carriers to support a transmission bandwidth greater than 20 MHz. According to its capabilities, the terminal may simultaneously receive one or more component carrier. LTE-A terminal can receive multiple component carriers transmitted simultaneously, LTE terminal beta ¹ J 4 can only take a less component carriers.

S303: Update content related to the PCID according to the new PCID;

The terminal learns from the indication information that the service station of the terminal does not change, but the PCID of the service site changes, and no network handover is required. The terminal changes the content related to the PCID, such as information related to the PCID during the scrambling code generation process in the system.

In the second scheme, the terminal changes the content related to the new PCID when the change time arrives, such as information related to the PCID in the scrambling code generation process in the system.

In addition, the terminal can also synchronize with the original service site by using the new PCID.

Correspondingly, the service site changes and sends a new PCID; in another embodiment, the service site changes and sends its own PCID when the change time arrives. In addition, the service site will also change the PCID-related information in the system, such as generating a new 4 special code sequence using the new PCID.

S304: Optionally, the terminal sends a PCID change confirmation message.

There is no strict execution order between step S303 and step S304, and it can be executed in any order. In this embodiment, when the PCID of the service site changes, the service station sends an indication message to the terminal of the subordinate, instructing the subordinate terminal to change only the PCID but does not perform the handover, optimize the handover process, improve the handover efficiency, and save network resources.

For the second handover indication information, the service station may send a second handover indication information to each terminal of the subordinate, or may broadcast the second handover indication information to all terminals of the subordinates by means of broadcast. In the message design of the second handover indication information, a new message may be designed, or the existing message may be used to carry the content of the second handover indication information.

1* column port, for the broadcast mode, the content of the second handover indication information may be carried in the mobilityControlInformation in the RRC connection reconfiguration message. The indication information in the above steps may be represented by 1 bit. When the bit is 0, it indicates that the service station for indicating the attribution of the terminal is unchanged, but the service station PCID is changed, and the normal handover procedure is not performed; When the bit is 1, it is represented as a regular handover.

For the broadcast mode, the system information message can be used to carry the content of the second handover indication information. Specifically, it can be implemented in the following two ways:

(1) There is a fixed time to send system information message

After the paging site broadcasts the paging message, the service station broadcasts a system information message system message to the UEs for a UEs system information update. System messages can contain: New PCID. System messages can also contain: New PCID and change time. Since the system message is not a handover message, the service station sends a system message containing the PCID, which implies that the service station does not change, but its PCID is changed. In another scenario, the system message may also explicitly include an indication that the service station is unchanged. In this case, the system message can contain: New PCID, indication information. System messages can also contain: New PCID, change time, indication information. For example, one bit can be used to indicate that its service site is unchanged.

(2) There is no fixed time to send system information message

When the system information message needs to be sent, the monthly traffic paging message first broadcasts the paging message to all its subordinate UEs, which contains the time T sent by the system information, and informs all its subordinate UEs that the service station will broadcast system information at time T. Message. The monthly service station broadcasts system information message system messages to UEs at time T. System messages can contain: New PCID. System messages can also contain: New PCID and change time. Since the system message is not a handover message, the service station sends a system message, which implies that the service station does not change, but its PCID is changed. In another scenario, the system message may also explicitly include an indication that the service station is unchanged. In this case, the system message can contain: New PCID, indication information. System messages can also contain: New PCID, change time, indication information. For example, one bit can be used to indicate that its service site is unchanged.

In summary, the indication information indicates that the service station to which the terminal belongs is unchanged, and no handover is required. The indication information may be an explicit indication identifier, for example, one bit of information indicates that network switching is not required; the indication information may also be an implicit identifier, for example, carrying a new information by using a specific or special instruction message, implicitly notifying the terminal that The home service site is unchanged and no network switch is required.

The monthly service station may be a relay or a base station. For example, the relay can be a relay station, and the base station can It is a base station of a general macro cell, and a base station of a femtocell, such as a home base station Home Node B (HNB) or a Home eNode B (HeNB), and a base station of a Pico cell micro cell.

The above procedure is to notify the subordinate terminal of the change of the PCID of the service station as an example, and the relay station or the terminal to which the subordinate PCID is changed may also be applied, and the flow is similar. The above process can be applied in the following scenarios: 1) For some reason, the PCID of the service site needs to be changed, a new PCID is specified by its advanced service site, and the subordinate site is notified of its new PCID; 2) for some reason The PCID of the service site is changed. Based on the measurements and/or based on the information of the inter-cell interaction, the service site determines a new PCID and notifies the subordinate site of its new PCID. For example, it is possible to apply a scenario in which the relay station notifies the terminal of a PCID change due to the movement of the relay station.

In addition, for the above process, 1) after changing its own PCID, the service station may notify the neighbor neighboring cell of the change information through S1 or X2 message signaling, and let the neighbor cell update its respective neighbor cell list; the service site may also pass the The home station of the home station is notified by the X2 message signaling to the neighboring neighboring cell by the X2 message signaling, and the neighboring cell updates its respective neighbor cell list. The change information may include: a new PCID of the service site; the change information may also include: a new PCID of the service site, a new operating frequency at which the PCID operates. 2) In another mode, before changing its own PCID, the service station may notify the neighboring neighboring cell of the change information by X2 message signaling, and let the neighbor cell update its respective neighbor cell list; the service site may also pass the The home station of the home station is notified by the X2 message signaling to the neighboring neighboring cell by the X2 message signaling, and the neighboring cell updates its respective neighbor cell list. The change information may include: a new PCID of the service site, a change time; the change information may also include: a new PCID of the service site, a new working frequency at which the PCID works, and a change time. For the above two methods, after receiving the change information, the neighbor neighboring cell may send the change information to its neighboring cell and its subordinate terminal. The neighboring area is sent to avoid PCID confusion; the change information is sent to its own terminal by broadcast and/or special message for the subordinate terminal to change the time after the subordinate terminal uses the new PCID in the measurement report. It can be similar to the terminal that the service station notifies its subordinates.

Referring to FIG. 4, an example of a message notification method provided by the present invention is as follows:

S401: The relay station sends second handover indication information to the terminal, where the terminal is used to indicate that the terminal belongs to The relay station does not change, but the PCID of the relay station is changed, and the handover procedure is not executed. The second handover indication information includes indication information, a new PCID. The indication message indicates that no network switching is required.

In the second scheme, the second handover indication information may include: indication information, a new PCID, and a change time. Used to inform the terminal: The relay station will use the new PCID when the change time arrives. The change time can be either an absolute frame number or a relative frame number, that is, starting with the current frame that received the PCID message. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0, the effect is the same as the unspecified change time.

S402: The terminal obtains indication information, a new PCID, from the second handover indication information.

The terminal learns that the home relay station does not change according to the indication information and the new PCID, but the PCID of the relay station changes, and no network handover is required.

In the second scheme, the terminal obtains the indication information, the new PCID, and the change time from the second handover indication information.

S403: Update the information related to the PCID by using the new PCID;

The terminal learns that the relay station to which the terminal belongs is unchanged according to the indication information, but the PCID of the relay station changes, and no network switching is required. The terminal changes the content related to the PCID, such as information related to the PCID during the scrambling code generation process in the system.

In addition, the terminal can also synchronize with the original relay station by using the new PCID.

Correspondingly, the relay station changes and transmits a new PCID. In another embodiment, the relay station changes and transmits its own PCID when the change time arrives. In addition, the relay station will also change the system and

PCID related information, such as generating a new 4 special code sequence using the new PCID.

S404: Optionally, the terminal sends a UE-PCID change confirmation message to the relay station.

The terminal sends a PCID Change Confirmation message to the relay station to inform the relay station to confirm the change process.

There is no strict execution order between step S403 and step S404, and it can be executed in any order. In this embodiment, when the relay station PCID changes, the relay station sends the terminal to its subordinate terminal. The indication information indicates that the subordinate terminal only changes the PCID but does not perform handover, optimizes the handover process, improves the handover efficiency, and saves network resources. Referring to FIG. 5, another embodiment of a message notification method provided by the present invention includes:

S501: The relay station sends third handover indication information to the terminal, where the relay station to which the terminal belongs is unchanged, but the first frequency fl of the relay station communicating with the terminal is changed, and the handover procedure is not performed. The second handover indication information includes indication information and a new first frequency. The indication information indicates that the relay station to which the terminal belongs is unchanged, and no network handover is required. The first frequency is the frequency of communication between the relay station and the terminal.

In the second scheme, the third handover indication information may include: indication information, a new first frequency, and a change time. Used to inform the terminal: The relay station will use the new first frequency when the change time arrives. The change time may be an absolute frame number or a relative frame number, that is, starting from the current frame receiving the third switching indication. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0, the effect is the same as the unspecified change time.

S502: The terminal obtains the indication information from the third handover indication information, the new first frequency; the terminal learns that the home relay station does not change according to the indication information and the new first frequency, but the communication frequency of the relay station and the terminal changes, and no network handover is needed.

In the second scheme, the terminal obtains the indication information, the new first frequency, and the change time from the second handover indication information.

S503: Update information related to the first frequency by using a new first frequency;

The terminal learns that the home relay station does not change according to the indication information, but changes the communication frequency with the relay station, and does not need to perform network handover, and then searches and receives the first frequency of the PCID with the new first frequency to synchronize with the relay station.

In the second scheme, the terminal updates and searches for the first frequency of the PCID with the new first frequency when the change time arrives.

Further, the terminal adopts a new first frequency and synchronizes with the relay station. The terminal does not have to parse the PCID for synchronization every frame. After the first frequency changes, the terminal can synchronize immediately, or can parse the PCID of the relay station when necessary, and synchronize with the relay station.

S504: The terminal sends a terminal frequency UE-F change confirmation message to the relay station.

There is no strict execution order between step S503 and step S504, and it can be executed in any order. The new first frequency may be the operating frequency of one carrier or the operating frequency of multiple carriers. In particular, for an LTE-A system to which carrier aggregation is applied, the operating frequency between the service station and the terminal may be on multiple carriers. Specifically, the new working frequency may be a frequency of one carrier, such as F1 or a frequency of multiple carriers. F3, F4 and F5. Carrier aggregation in LTE-A refers to the convergence of two or more component carriers to support a transmission bandwidth greater than 20 MHz. According to its capabilities, the terminal can receive one or more component carriers at the same time. The LTE-A terminal can receive multiple component carriers at the same time, and the LTE terminal can only receive one component carrier.

In this embodiment, when the first frequency of communication between the relay station and the terminal changes, the relay station transmits indication information to the subordinate terminal, and notifies the subordinate terminal to change only the first frequency. Referring to FIG. 6, another embodiment of a message notification method provided by the present invention includes: a PCID of a relay station, and a change of a first frequency of communication between a relay station and a terminal.

S601: The relay station sends the second handover indication information to the terminal, indicating that the relay station to which the terminal belongs is unchanged, but the PCID of the relay station and the first frequency fl of the communication are changed, and the handover procedure is not performed. The second handover indication information includes indication information, a new PCID, and a new first frequency. The indication message indicates that no network switching is required. The first frequency is the frequency of communication between the relay station and the terminal.

In the second scheme, the second handover indication information may include: indication information, a new PCID, a new first frequency, and a change time. Used to inform the terminal: The relay station will send a new PCID with the new first frequency when the change time arrives. The change time can be either an absolute frame number or a relative frame number, that is, starting with the current frame receiving the PCID message. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0, the effect is not The change time is the same.

S602: The terminal obtains the indication information, the new PCID, and the new first frequency from the second handover indication information.

The terminal learns that the home relay station does not change according to the indication information, the new PCID, and the new first frequency, but the PCID and the communication frequency of the relay station change, and no network handover is required.

In the second scheme, the terminal obtains indication information, a new PCID, a new first frequency, and a change time from the second handover indication information.

S603: Update information related to the new PCID and the new first frequency;

The terminal learns that the relay station of the terminal does not change according to the indication information, but the PCID of the relay station changes, and no network switching is required. The terminal changes the content related to the PCID, such as information related to the PCID during the scrambling code generation in the system, etc.; searches and receives the first frequency of the PCID with the new first frequency to synchronize with the relay station.

In the second scheme, the terminal changes the content related to the new PCID when the change time arrives, such as information related to the PCID in the scrambling code generation process in the system, and the first to update and search the PCID by using the new first frequency. Frequency to synchronize with the relay.

In addition, the terminal can also synchronize with the original relay station by using the new PCID and the new first frequency. Correspondingly, the relay station changes and transmits a new PCID. In another embodiment, the relay station changes and transmits its own PCID when the change time arrives. In addition, the relay station also changes the information related to the PCID in the system, such as generating a new 4 special code sequence using the new PCID.

S604: Optionally, the terminal sends a UE-PCID change confirmation message to the relay station.

There is no strict execution order between step S603 and step S604, and it can be executed in any order. The new first frequency may be an operating frequency of one carrier or an operating frequency of multiple carriers. In particular, for an LTE-A system to which carrier aggregation is applied, the operating frequency between the service station and the terminal may be on multiple carriers. Specifically, the new working frequency may be a frequency of one carrier, such as F1 or a frequency of multiple carriers. F3, F4 and F5. Carrier aggregation in LTE-A means that two or more component carriers are aggregated to support a transmission bandwidth greater than 20 MHz. According to its capability, the terminal can receive one or more component carriers at the same time. The LTE-A terminal can receive transmissions of multiple component carriers at the same time, and the LTE terminal can only receive one component carrier. In this embodiment, when the relay station PCID and the communication frequency of the relay station and the terminal change, the relay station sends indication information to the subordinate terminal, instructing the subordinate terminal to change only the PCID and the communication frequency but does not perform handover, optimize the handover procedure, and improve the handover. Efficiency, saving network resources. Referring to FIG. 7, another embodiment of a message notification method provided by the present invention includes:

S701: The relay station sends the second handover indication information to the terminal, and is used to indicate that the relay station to which the terminal belongs is unchanged, but the PCID of the relay station is changed, and the handover procedure is not performed. The second switching indication information includes indication information, a new PCID. The indication message indicates that no network switching is required.

S702: The terminal obtains indication information, a new PCID, from the second handover indication information.

S703: update the information related to the PCID by using the new PCID;

Correspondingly, the relay station changes and transmits a new PCID; in another embodiment, the relay station When the change time arrives, change and send your own PCID. In addition, the relay station also changes the information related to the PCID in the system, such as generating a new 4 special code sequence by using the new PCID.

S704: The terminal sends a UE-PCID change confirmation message to the relay station.

S705: The relay station sends third handover indication information to the terminal, where the relay station to which the terminal belongs is unchanged, but the first frequency fl of the relay station communicating with the terminal is changed. The second switching indication information includes indication information and a new first frequency. The indication message indicates that no network switching is required. The first frequency is the frequency of communication between the relay station and the terminal.

S706: The terminal obtains the indication information from the third handover indication information, the new first frequency; the terminal learns that the home relay station does not change according to the indication information and the new first frequency, but the communication frequency of the relay station and the terminal changes, and no network handover is needed.

S707: Update the information related to the first frequency by using the new first frequency;

Further, the terminal adopts a new first frequency and synchronizes with the relay station.

The terminal does not have to parse the PCID for synchronization every frame. After the first frequency changes, the terminal can synchronize immediately, or can analyze the PCID of the relay station when necessary, and synchronize with the relay station.

S708: The terminal sends a terminal frequency UE-F change confirmation message to the relay station. The new first frequency may be an operating frequency of one carrier or an operating frequency of multiple carriers. In particular, for an LTE-A system to which carrier aggregation is applied, the operating frequency between the service station and the terminal may be on multiple carriers. Specifically, the new working frequency may be a frequency of one carrier, such as F1 or a frequency of multiple carriers. F3, F4 and F5. Carrier aggregation in LTE-A means that two or more component carriers are aggregated to support a transmission bandwidth greater than 20 MHz. According to its capability, the terminal can receive one or more component carriers at the same time. The LTE-A terminal can receive transmissions of multiple component carriers at the same time, and the LTE terminal can only receive one component carrier.

Obviously, the steps in the foregoing process do not require strict chronological order. In an implementation manner, S701 to S708 may be sequentially performed, and the relay station notifies the terminal of the new PCID and the new first frequency, and the relay station notifies the new PCID. After the terminal is provided, the process may be further synchronized with the target base station of the relay station. After the relay station synchronizes with the target base station, the process of step S705 to step S708 is performed to notify the terminal of the new first frequency. In another embodiment, The process of step S705 to step S708 may be performed, the relay station notifies the terminal of the new first frequency, and then the flow of steps S701 to S704 is performed, the relay station notifies the terminal of the new PCID; or the flow of steps S701 to S704 may be performed in parallel. With the flow of steps S705 to S708, the new PCID and the new fl are notified to the terminal.

In this embodiment, when the PCID and the first frequency of the relay station change, the relay station sends two indication information to the subordinate terminal, respectively, indicating that the subordinate terminal only changes the PCID but does not switch, only changes the first frequency but does not perform Switching, optimizing the switching process, improving switching efficiency and saving network resources.

As shown in FIG. 4 to FIG. 7 , the above embodiments describe the case where the PCID of the relay station is notified of the change notification, and those skilled in the art should understand that the PCID of the base station is notified to notify the terminal or its subordinate relay. In the case, the implementation process is similar. The base station may be a base station of a general macro cell, a base station of a femtocell, such as a home base station Home Node B (HNB) or a Home eNode B (HeNB), and the like, and a base station of a Pico cell micro cell. Referring to FIG. 8, an application example of a message notification method is applied to notify a terminal when a relay station changes a PCID and a PCID is changed when a cell moves between cells, and the process includes: S801: The serving base station receives the measurement report sent by the relay station.

The relay station periodically or irregularly sends a measurement report to the serving base station, and the serving base station receives the measurement report.

S802: The serving base station makes a handover decision, and sends a handover request to the target base station, where the handover request includes a negotiation message, and is used to negotiate with the serving base station whether the original PCID of the relay conflicts with a site in the serving base station; the negotiation message includes the relay station. PCID;

The serving base station determines whether the relay station wants to switch according to the measurement report and the radio resource management information. If the handover is to be performed, the serving base station sends a handover request to the target base station, where the handover request includes information required by the target base station to prepare resources for handover. The information may include: context reference information of X2 signaling of the relay station, S1EPC signaling context reference information of the relay station, target cell ID, RRC context information, access layer configuration information, and EPS bearer context information.

The serving base station negotiates with the target base station through the negotiation message to know whether there is a PCID conflict in the target cell if the relay switches to the target cell. The serving base station may carry the negotiation message in the handover request to implement compatibility with the existing protocol, or may directly send the negotiation message to the target base station.

S803: The target base station confirms that there may be a PCID conflict, selects one or more PCIDs for use by the relay in the target cell, and sends a handover request response to the serving base station, where the handover request response includes a PCID list.

If the target base station confirms that there may be a PCID collision, one or more PCIDs are recommended to the serving base station for relay use in the target cell. The target base station can judge the possibility of conflict according to the following conditions:

a) there is a station in the target cell that uses the same PCID as the original PCID of the relay station; or b) there is a station in the target cell and the cell in the target cell that uses the same PCID as the original PCID of the relay station.

According to the conflict judgment result, the target base station provides a list of PCIDs to the serving base station, and the list may be a PCID set recommended by the target base station or a PCID set not recommended by the target base station.

S804: The serving base station allocates a new PCID to the relay station according to the PCID list and the PCID usage of the current cell, and sends a PCID change message to the relay, where the PCID change message includes a new PCID, and is used to notify the relay station to use the new PCID. In another scenario, the PCID change message can contain the new PCID and the time of the change. Used to notify the relay to use the new PCID when the change time arrives. The change time can be either an absolute frame number or a relative frame number, that is, starting from the current frame that received the PCID change message. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0. The effect is the same as the unspecified change time.

Based on the foregoing two manners, the serving base station may further include a relay station switching time T _h in the PCID change message, and the relay station switching time T _h may also be carried in other messages.

S805: Optionally, the relay sends an acknowledgement message to the serving base station, to confirm that the PCID change is accepted.

S806: the relay station interacts with its subordinate UEs, notifying the subordinate UEs that the service station does not change but the PCID of the service station changes;

Referring to FIG. 4, in an embodiment, the step may include the processes of S401 to S404.

S807: The relay sends a PCID change confirmation message to the serving base station, notifying that the PCID has been modified, and the handover process can be started;

This step is an optional step. For example, after the relay station confirms that its own terminal receives and completes the new PCID change, it can directly initiate the handover procedure without sending a PCID change confirmation message to the serving base station; for example, the serving base station notifies the relay station to switch through the PCID change confirmation message or other message. It is time T _h , then the relay station can switch to the target cell at the specified T _h according to the indication of the serving base station without sending a PCID change confirmation message.

S808: The serving base station sends a handover request message to the relay station, and provides information that the relay station switches to the target base station.

This step is an optional step. In another implementation manner, the handover request response sent by the serving base station to the relay station in step S804 includes the handover information of the relay, and the serving base station may not send the handover request message to the relay station, and the relay station may be in the After transmitting the PCID change confirmation message to the serving base station, the handover procedure is initiated and synchronized with the target base station.

S809: After receiving the handover request message, the relay station starts a handover procedure, performs a synchronization process with the target base station, and the target base station responds to the synchronization, including uplink allocation, timing advance, and the like. Process;

S810: The relay successfully accesses the target site. The send handover confirmation message indicates that the handover process of the relay is completed.

In this embodiment, before the relay station switches to the target base station, the serving base station negotiates with the target base station to confirm that there may be a PCID conflict, and the monthly service base station allocates a new PCID to the relay station, and the relay station sends indication information to the subordinate terminal to indicate the subordinate's The terminal only changes the PCID but does not switch, optimizes the switching process, improves the switching efficiency, and saves network resources.

In another application scenario, when the relay station moves between cells, the relay station initiates a handover request to the serving base station, and the PCID of the relay station is changed and the PCID is changed to notify the terminal. The process includes:

S1: The relay station sends a first handover request message to the serving base station, where one or more candidate target base stations of the handover are included.

S2: The serving base station makes a handover decision according to the first handover request message, and sends a handover request to the target base station, where the handover request includes a negotiation message, and is used to negotiate with the serving base station whether the same PCID as the original PCID of the base station exists in the target cell. The negotiation message includes the PCID of the relay station and the target cell ID;

The serving base station makes a handover decision according to the first handover request message, combined with the measurement report reported by the relay station, and the situation between the base stations. If the first handover request message includes a plurality of candidate target base stations, the serving base station selects one of the plurality of candidate target base stations as the target base station according to the situation.

The serving base station sends a handover request to the target base station, where the handover request includes information required by the target base station to switch resources. The information may include: context reference information of X2 signaling of the relay station, S1EPC signaling context reference information of the relay station, target cell ID, RRC context information, access layer configuration information, and EPS bearer context information.

The serving base station negotiates with the target base station through the negotiation message to know whether there is a PCID conflict in the target cell if the relay switches to the target cell. The serving base station may carry the negotiation message in the handover request, or may directly send the negotiation message to the target base station.

The remaining steps of the process are the same as steps 803 to 810 in the previous embodiment, and are not described herein. Referring to FIG. 9, in an application scenario of the embodiment of the present invention, when a relay station moves between cells, a PCID of the relay station and a first frequency of communication with the terminal are changed, and after the change, the terminal is notified not to perform network switching, The process includes:

S901: The serving base station receives the measurement report sent by the relay station.

S902: The serving base station makes a handover decision, and sends a handover request to the target base station, where the handover request includes a negotiation message, and is used to negotiate with the serving base station whether the original PCID of the relay conflicts with a site in the serving base station; the negotiation message includes the relay station. PCID;

The handover request message further includes frequency information, where the frequency information includes a first frequency, wherein the first frequency is a frequency used by the relay station to communicate with the terminal. Of course, the serving base station can also use another message sending frequency information separately.

S903: The target base station confirms that there may be a PCID conflict, selects one or more PCIDs for the relay to use in the target cell, and sends a handover request response to the serving base station, where the handover request response includes the PCID list and the changed first frequency information;

a) there is a station in the target cell that uses the same PCID as the original PCID of the relay station; or b) that the target cell and the cell in the target cell have the same use as the original PCID of the relay station. PCID site.

If the target base station confirms that the first frequency used by the relay station needs to be changed, then a frequency change message is transmitted, and the frequency change information includes the new first frequency. Obviously, the target base station can send a PCID list or frequency change information using a separate message.

S904: The serving base station allocates a new PCID to the relay station according to the PCID list and the PCID usage of the current cell, and sends a PCID change message to the relay, where the PCID change message includes a new PCID for notifying the relay station to use the new PCID.

In another scenario, the PCID change message can contain the new PCID and the change time. Used to notify the relay to use the new PCID when the change time arrives. The change time can be either an absolute frame number or a relative frame number, that is, calculated starting from the current frame that received the PCID change message. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0. The effect is the same as the unspecified change time.

The serving base station needs to notify the relay station of the new first frequency, and the PCID change message further includes the new first frequency. The new first frequency is sent to the relay station in the PCID change message, and the relay station can perform band replacement before switching, and can also save signaling. In another implementation, the serving base station can transmit a first frequency change message to the relay station to transmit the new first frequency to the relay station. In this way, the serving base station may not be limited to transmitting the first frequency change message in this step, for example, it may transmit the first frequency change message after the relay station handover for frequency band replacement.

S905: Optionally, the relay sends an acknowledgement message to the serving base station, to confirm that the PCID change is accepted.

S906: The relay station interacts with its subordinate UEs, and notifies the subordinate UEs that the service station does not change but the PCID of the service station changes; Referring to FIG. 6, in an embodiment, step S906 may include the processes of S601 to S604. Referring to FIG. 7, in another embodiment, step S906 may include the flow of S701 to S704. S907: Optionally, the relay sends a PCID change confirmation message to the serving base station to notify that the PCID has been modified, and the handover process may be started.

S908: The serving base station sends a handover request message to the relay station, and provides information that the relay station switches to the target base station;

This step is an optional step. In another implementation manner, the handover request response sent by the serving base station to the relay station in step S904 includes the handover information of the relay, and the serving base station may not send the handover request message to the relay station, and the relay station may be in the After transmitting the PCID change confirmation message to the serving base station, the handover procedure is initiated and synchronized with the target base station.

S909: After receiving the handover request message, the relay station starts a handover procedure, and performs a synchronization process with the target base station, where the target base station responds to the synchronization, including uplink allocation and timing advance;

S910: The relay successfully accesses the target site. The send handover confirmation message indicates that the handover process of the relay is completed.

Referring to FIG. 7, in another embodiment, the step S910 further includes the step of the relay station notifying the new first frequency to the terminal, which specifically includes: the processes of S705 to S708.

S11: The relay station sends a first handover request message to the serving base station, where one or more candidate target base stations of the handover are included.

S12: The serving base station makes a handover decision according to the first handover request message, and sends a handover request to the target base station, where the handover request includes a negotiation message, and is used to negotiate with the serving base station whether the same PCID as the original PCID of the base station exists in the target cell. The negotiation message includes the PCID of the relay station and the target cell ID; The serving base station makes a handover decision according to the first handover request message, combined with the measurement report reported by the relay station, and the situation between the base stations. If the first handover request message includes multiple candidate target base stations, the serving base station selects one of the plurality of candidate target base stations as the target base station according to the situation.

The remaining steps of the process are the same as steps 903 to 910 in the previous embodiment, and are not described herein. Referring to FIG. 10, in an application scenario of the embodiment of the present invention, when the relay station moves within the cell, a PCID conflict occurs, the PCID of the relay station changes, and after the change, the terminal is notified that the network switching does not need to be performed, and the process includes:

S1001: the serving base station receives the measurement report sent by the relay station;

The relay station sends a measurement report to the serving base station periodically or irregularly, and the serving base station receives the measurement report.

S1002: The serving base station confirms that there may be a PCID conflict, assigns a new PCID to the relay, and sends a PCID change message to the relay, the PCID change message including the new PCID.

The serving base station confirms that there may be a PCID conflict according to the measurement report. If there is a PCID conflict in the cell or the co-channel interference strength is greater than the reselection threshold, and the interference time exceeds the threshold, the collision is confirmed, and the serving base station needs to allocate the PCID for the relay station to reproduce. .

S1003: Optionally, the relay sends an acknowledgement message to the serving base station, to confirm that the PCID change is accepted;

S1004: The relay station sends second handover indication information to the terminal, where the terminal is instructed to change the PCID but does not perform the handover procedure. The second handover indication information includes indication information, a new PCID. Means The message indicates that the terminal does not need to perform network switching.

In the second scheme, the second handover indication information may include: indication information, a new PCID, and a change time. Used to inform the terminal: The relay station will use the new PCID when the change time arrives. The change time may be an absolute frame number or a relative frame number, that is, the start of the current frame in which the second switching indication information is received. The change time may also be the set time T (ms) of the timer. When the terminal receives the second switch indication information, the terminal starts a timer, the timer time is the change time, and the search and the new start are started after the timer expires. PCID, synchronized with the relay station. In general, the change time is not 0; if the change time is 0, the effect is the same as the unspecified change time. In the third scheme, the second handover indication information may include: indication information, a new PCID, a change time, and a new operating frequency. Used to inform the terminal: The relay station will send a new PCID with the new working frequency when the change time arrives. In the fourth scheme, the second handover indication information may include: indication information, a new PCID, and a new operating frequency. Used to inform the terminal: The relay station will send a new PCID with the new operating frequency.

S1005: The terminal obtains the indication information from the second handover indication information, the new PCID, and learns that the service site does not change, but the PCID of the service site changes.

S1006: The terminal updates the content related to the PCID according to the new PCID;

The terminal changes the content related to the PCID, such as information related to the PCID during the scrambling code generation process in the system.

In the second scheme, the terminal changes the content related to the new PCID when the change time arrives, such as information related to the PCID in the scrambling code generation process in the system, etc. In the third scheme, the terminal updates and the new PCID, The new fl related information; in the fourth scheme, the terminal updates the information related to the new PCID and the new f 1 when the change time arrives.

Further, the terminal may further: receive a new PCID and synchronize with the relay station. In another mode, a new PCID is received on the new first frequency and synchronized with the relay station.

S 1007: The terminal sends a UE-PCID change confirmation message. In this embodiment, when the relay station moves between cells, the serving base station confirms that a PCID conflict may occur, and the serving base station allocates a new PCID to the relay station to solve the problem of PCID conflict between cells; after the PCID changes, the relay station sends the terminal to its subordinate terminal. The indication information indicates that the subordinate terminal only changes the PCID but does not perform handover, optimizes the handover process, improves the handover efficiency, and saves network resources.

Referring to FIG. 11, in an application scenario of the embodiment of the present invention, when the relay station moves within the cell, a PCID conflict occurs, the PCID of the relay station changes, and after the change, the terminal is notified that the network switching does not need to be performed, and the process includes:

S1101: The relay station sends a PCID change request message to the serving base station;

According to the detection result, if the PCID conflict exists in the cell or the co-channel interference strength is greater than the reselection threshold, and the interference time exceeds the threshold, the relay station initiates the PCID change request message;

S1102: The serving base station allocates a new PCID to the relay, and sends a PCID change message to the relay, where the PCID change message includes a new PCID;

Steps S1103 to S1107 are similar to steps S1003 to S1007 in the previous embodiment, and are not described herein.

In this embodiment, when the relay station moves between cells, the relay station confirms that a PCID conflict may occur, and requests the serving base station to allocate a new PCID for it, and solves the problem of PCID conflict between cells; after the PCID changes, the relay station sends the terminal to its subordinate terminal. The indication information indicates that the subordinate terminal only changes the PCID but does not perform handover, optimizes the handover process, improves the handover efficiency, and saves network resources. A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, or a read-only memory (Read-Only Memory,

RAM) and so on. As shown in FIG. 12, a terminal provided by an embodiment of the present invention includes: The receiving unit 1201 is configured to receive handover indication information.

The obtaining unit 1202 is configured to obtain the indication information and the new information from the handover indication information, and learn that the service station does not change according to the indication information, and does not perform network handover;

The updating unit 1203 is configured to update information related to the new information.

In another embodiment, the terminal further includes: a synchronization unit 1204, configured to synchronize with the service site according to the new information.

In one embodiment, the new information includes: a new PCID; wherein the update unit is configured to update information related to the new PCID; the synchronization unit is configured to receive the new PCID and synchronize with the service site.

In another embodiment, the new information includes: a new first frequency; wherein, the updating unit is configured to update information related to the new first frequency; the synchronization unit is configured to receive the PCID at the new first frequency, and synchronize with the service site .

In another embodiment, the new information includes: a new PCID and a new first frequency; wherein the update unit is configured to update information related to the new PCID, the new first frequency; the synchronization unit is configured to receive the new PCID at the new operating frequency , Synchronize with the service site.

In another implementation manner, the obtaining unit is further configured to: obtain a change time from the handover indication information; and trigger the update unit to update when the change time arrives.

In another implementation manner, the terminal further includes:

The confirming unit 1205 is configured to send a terminal new information change confirmation message to the relay station.

The monthly service station may be a relay or a base station. For example, the relay may be a relay station, the base station may be a base station of a general macro cell, and a base station of a femtocell such as a home base station Home Node B (HNB) or Home eNode B (HeNB), and a base station of a Pico cell micro cell.

In this embodiment, when some information of the service station to which the terminal belongs changes, but the home service station does not change, the terminal only changes the information but does not perform handover according to the indication information sent by the service station, optimizes the handover process, and improves the handover efficiency. , saving network resources. Referring to FIG. 13, a service site provided by an embodiment of the present invention includes:

The obtaining unit 1301 is configured to obtain a new PCID;

The generating unit 1302 is configured to generate a handover indication information, where the handover indication information includes: indication information, a new PCID, the indication information indicates that the service station is unchanged, and the network handover is not performed; The notification unit 1303 is configured to send the handover indication information to the terminal of the subordinate, notify the terminal that the service station belongs to the same, and the PCID changes, and no network handover is needed;

The changing unit 1304 is configured to change information related to the PCID.

Further, the service site further includes:

The sending unit 1305 is configured to send a new PCID to the terminal. The terminal can synchronize with the service site based on the new PCID. Alternatively, a new PCID can be sent with the new first frequency.

Further, the service site further includes:

The acknowledgment receiving unit 1306 is configured to receive a change confirmation message sent by the terminal.

In another embodiment, the acquiring unit is further configured to acquire a new first frequency, and the generating unit is configured to generate a switching indication information, where the switching indication information includes: indication information, a new PCID, and a new first frequency, the indication information The service unit is not changed, and the network switching is not performed. The notification unit 1302 is further configured to notify the service station to which the terminal belongs but the first frequency changes; the change unit is further configured to change the information related to the new first frequency. .

In another mode, the obtaining unit is further configured to acquire a change time, and the generating unit is configured to generate a switching indication information, where the switching indication information includes: indication information, a new PCID, and a change time, where the indication information indicates that the service station does not change, The network switching is not performed; the notification unit 1302 is further configured to notify the service site to which the terminal belongs, but the PCID of the service site will change when the change time arrives.

In this embodiment, some information of the service station changes, and the indication information sent by the subordinate terminal informs the terminal to change only the information but does not perform handover, optimize the handover process, improve the handover efficiency, and save network resources. In conclusion, the above description is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A message notification method, comprising:

Receiving the handover indication information, where the handover indication information includes: indication information, new information, where the indication information indicates that network handover is not performed;

Update content related to new information based on new information.

2. The method according to claim 1, further comprising:

Synchronize with the service site based on the new information.

3. The method of claim 1 wherein the new information comprises: a new PCID; a new first frequency; or a new PCID and a new first frequency.

The method according to claim 1, wherein the switching indication information further includes a change time, the method further comprising:

Obtaining a change time from the switching indication information;

Among them, the steps of updating the content related to the new information according to the new information include:

When the change time arrives, the content related to the new information will be updated based on the new information.

A physical cell identification PCID notification method, which is characterized in that:

Update the PCID-related information with the new PCID.

6. The method according to claim 5, further comprising:

Synchronize with the service site with the new PCID.

The method according to claim 5, wherein the handover indication information further includes: a new first frequency; the method further includes:

Update the information related to the new first frequency.

8. The method according to claim 7, wherein the new first frequency is a plurality of carriers Frequency of.

The method according to claim 5, wherein the switching indication information further includes a change time, and updating the information related to the PCID by using the new PCID includes:

When the change time arrives, the information related to the PCID is updated with the new PCID.

10. A terminal, comprising:

a receiving unit, configured to receive switching indication information;

An update unit for updating information related to new information.

The terminal according to claim 10, further comprising:

A synchronization unit that is used to synchronize with the service site based on the new information.

The terminal according to claim 11, wherein the new information comprises: a new PCID; wherein the synchronization unit is configured to receive a new PCID and synchronize with the service station.

The terminal according to claim 11, wherein the new information comprises: a new first frequency; wherein the synchronization unit is configured to receive the PCID at the new first frequency and synchronize with the service station.

The terminal according to claim 11, wherein the new information comprises: a new PCID and a new first frequency; wherein the synchronization unit is configured to receive a new PCID at a new operating frequency and synchronize with the service site.

The terminal according to claim 11, wherein the acquiring unit is further configured to: obtain a change time from the switching indication information; and trigger a change unit to perform a change when the change time arrives.

16. A service site, comprising:

An acquisition unit for obtaining a new PCID;

a generating unit, configured to generate a switching indication information, where the switching indication information includes: indication information, a new PCID, where the indication information indicates that network switching is not performed;

A change unit that is used to change information related to the PCID.

The service station according to claim 16, further comprising: a sending unit, configured to send a new PCID to the terminal.

18. The service station of claim 16 wherein:

The obtaining unit is further configured to acquire a new first frequency;

a generating unit, configured to generate a handover indication information, where the handover indication information includes: indication information, a new PCID, and a new first frequency, where the indication information indicates that network handover is not required; the notification unit is further configured to notify the terminal of the attribution The service station does not change but the first frequency changes; the change unit is also used to change information related to the new first frequency.

19. The service station of claim 16 wherein:

The acquisition unit is also used to obtain the change time;

The generating unit is configured to generate a handover indication information, where the handover indication information includes: indication information, a new PCID, and a change time, where the indication information indicates that network handover is not required; and the notification unit is further configured to notify the terminal of the attribution The service site does not change, but the PCID of the service site will change when the change time arrives.

The service station according to claim 16, further comprising: an acknowledgment receiving unit, configured to receive a change confirmation message sent by the terminal.