KR20120055634A - Method and system for handover and method for acquiring neighbor broadcast messages - Google Patents

Abstract

According to one aspect of the present invention, a handover method is provided.
In the handover method according to the present invention, in the case of an advanced terminal working in a first region of a serving advanced base station, the content of a neighbor cell broadcast message in a second region of the serving advanced base station transmitted by the serving advanced base station is transmitted by the advanced terminal. And acquiring a handover to the second area of the neighbor cell advanced base station or the neighbor cell existing base station based on the content of the neighbor cell broadcast message acquired by the advanced terminal.

Description

Handover method and system, acquisition method of neighbor cell broadcast message {METHOD AND SYSTEM FOR HANDOVER AND METHOD FOR ACQUIRING NEIGHBOR BROADCAST MESSAGES}

TECHNICAL FIELD The present invention relates to the field of mobile communications technologies, and more particularly, to a handover method and system, and a method for acquiring a neighbor cell broadcast message.

Currently, a wireless communication system communicates with a mobile or fixed wireless communication terminal (for example, a device such as a mobile wireless telephone or a laptop equipped with a wireless communication card can be called a terminal) using electromagnetic waves. In general, when performing wireless communication, the terminal is located within the wireless cover range of the system and communicates with the system through a wireless communication channel. A wireless communication channel divides an electromagnetic wave frequency into a plurality of carrier frequencies, one carrier frequency being one wireless communication channel. A wireless communication system provides a wireless cover within a certain range using a designated wireless channel through a base station (hereinafter referred to as a BS). The geographical range is called a cell. In general, the base station is located in the center of the cell. When the terminal moves from one cell to another cell, handover of the base station must be performed to maintain communication.

Due to the rapid development of communication technology, an advanced base station (hereinafter referred to as ABS) has emerged, and an advanced base station can be compatible with an existing terminal, and an advanced mobile station (AMS) is also connected to an existing base station. It is possible. The time zone of the advanced base station is called the first zone (M zone). Also called MZone below and second zone (also called legacy zone). Legacy Zone, referred to as LZone below). The advanced terminal may work in the first area and the existing terminal may work in the second area. Since the advanced terminal can use the advanced communication protocol or the existing protocol, the advanced terminal can not only work in the first area of the advanced base station, but also can work in the second area of the advanced base station. There is a transition between them and this handover may be referred to as a zone switch.

Using WiMAX technology as an example, an advanced control station (e.g., a base station / relay station that supports the IEEE802.16m protocol) is compatible with an existing mobile station (e.g., a mobile station that supports the IEEE802.16e protocol) and similarly an advanced mobile station (e.g. For example, a mobile station supporting the IEEE802.16m protocol can also be connected to an existing control station (for example, a base station supporting IEEE802.16e or a relay station supporting IEEE802.16j). The first region may support a new communication protocol defined in IEEE 802.16m and the second region may support the protocol of IEEE802.16e / 16j. In addition, the advanced control station may be accessible only to the advanced terminal, that is, may support only the new communication protocol (only the first area exists) defined in IEEE 802.16m.

Multicarrier technology has been proposed to improve the data transmission speed of wireless communication systems. Advanced base stations can support multi-carrier operations. Under the protocol of a multi-carrier wireless communication system, a unified Media Access Control (hereinafter referred to as MAC) entity has a number of channels (channel 1, channel 2, ...). It controls the physical layer (hereinafter referred to as PHY) including channel N). Among them, each channel may have different bandwidths, and these bandwidths may be continuous or discontinuous frequency bands.

In a wireless communication system supporting multi-carrier operation, in the case of a base station, a carrier may be divided into a full batch carrier and a partial batch carrier. Among them, the all-carrier carrier refers to a carrier on which all control channels are arranged, and the control channel includes a synchronization channel, a broadcast channel, a multicast channel and a unicast channel, and also includes information on a multicarrier operation and other carrier information and parameters. It further includes an associated channel. Therefore, the network connection process of the terminal must be all performed in the batch carrier. In the case of the terminal, all the batch carriers that perform the network connection are called main carriers. Partially deployed carrier refers to a carrier in which only basic control channels are used for service exchange in multi-carrier operation. All batch carriers may be the main carrier or subcarrier of the terminal, but partial batch carriers may be the subcarrier of the terminal only. In one cell, each terminal may have only one main carrier, one or more subcarriers, and may not have subcarriers.

Currently, an advanced terminal supporting multi-carrier operation can be divided into a single root (single radio) terminal and a multiple root (multiple radio) terminal. One route corresponds to one broadcast wave block (hereinafter referred to as RF) of the physical layer and one route can work on one carrier point of the system.

According to the existing technology, the neighbor cell broadcast message (for example, AAI-NBR-ADV) of the first region of the advanced base station and the advanced base station broadcasts only the system information of the first region of the neighbor cell advanced base station and the neighbor cell advanced base station. . Therefore, the advanced terminal working in the advanced base station or the first area of the advanced base station receives system information of the adjacent cell existing base station and the second area of the adjacent cell advanced base station directly from the neighbor cell broadcast message of the advanced base station or the first area of the advanced base station. It cannot be acquired. When the advanced terminal needs to handover to the neighboring cell existing base station from the first region of the serving advanced base station or to handover to the second region of the neighboring cell advanced base station in order to acquire better service, the AMS is located in the neighboring cell. Since system information of the second area of the base station and the neighboring cell advanced base station cannot be obtained, handover from the first area of the serving advanced base station to the second area of the neighboring cell advanced base station or to the neighboring cell existing base station cannot be performed. .

The present invention has been made in consideration of a problem that an advanced terminal existing in the related art cannot handover from a first area of a serving advanced base station to a second area of a neighboring cell advanced base station or an existing cell to a neighboring cell. An object of the present invention is to provide a method for acquiring a neighbor cell broadcast message and an improved handover scheme.

According to one aspect of the present invention, a handover method is provided.

In the handover method according to the present invention, in the case of an advanced terminal working in a first region of a serving advanced base station, the content of a neighbor cell broadcast message in a second region of the serving advanced base station transmitted by the serving advanced base station is transmitted by the advanced terminal. And acquiring a handover to the second area of the neighbor cell advanced base station or the neighbor cell existing base station based on the content of the neighbor cell broadcast message acquired by the advanced terminal.

According to another aspect of the present invention, a handover system is provided.

The handover system according to the present invention includes an advanced base station and an advanced terminal. Among them, the advanced base station may indicate instruction information for instructing the advanced terminal to receive the neighbor cell broadcast message in the second region of the advanced base station in the first region or the neighbor cell broadcast message of the second region of the advanced base station. A neighbor, which is transmitted to an advanced terminal, the advanced terminal works in the first area of the advanced base station, receives the indication information or the neighbor cell broadcast message sent by the advanced base station, and acquires and acquires the contents of the neighbor cell broadcast message. Based on the contents of the cell broadcast message, handover to the second area of the neighbor cell advanced base station or the neighbor cell existing base station.

According to yet another aspect of the present invention, there is provided a method for acquiring a neighbor cell broadcast message. In the case of an advanced terminal working in a first area of a serving advanced base station, the serving advanced base station transmitted by the serving advanced base station is transmitted by the advanced terminal. And acquiring the contents of the adjacent cell broadcast message of the two regions.

According to at least one of the above technical solutions of the present invention, the advanced terminal acquires the content of the neighbor cell broadcast message of the second region of the serving advanced base station transmitted by the serving advanced base station, and thus the neighboring cell of the existing base station and the neighboring cell advanced base station. System information of the second area is acquired to realize handover from the first area of the current serving advanced base station to the second area of the neighboring cell existing base station or the neighboring cell advanced base station.

Other features and advantages of the invention will be set forth in the description that follows, and should be apparent from the following description, or may be learned by practice of the invention. The objects and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the specification, claims and drawings.

In the existing technology, since the neighbor cell broadcast message of the first region of the advanced base station and the advanced base station broadcasts only the system information of the first region of the neighbor cell advanced base station and the neighboring cell advanced base station, The advanced terminal cannot acquire the system information of the neighboring cell advanced base station and the neighboring cell advanced base station from the neighbor cell broadcast message, and thus, the legacy terminal existing in the second region and neighboring cell of the neighboring cell advanced base station from the first region of the serving advanced base station. Handover to the base station cannot be performed. In view of such a problem, an embodiment of the present invention provides a handover method. In the embodiment of the present invention, in the case of an advanced terminal working in the first region of the advanced base station, the advanced terminal acquires the contents of the neighbor cell broadcast message of the second region of the serving advanced base station transmitted by the serving advanced base station. Based on the contents of the acquired neighbor cell broadcast message of the second region, the handover is performed from the first region of the current serving advanced base station to the second region of the neighbor cell advanced base station or to an existing cell of the neighbor cell.

Here, the features described in the embodiments and the embodiments of the present invention can be combined with each other under mutually inconsistent circumstances.

The preferred embodiments of the present invention will be described in conjunction with the following drawings, but the following preferred embodiments are intended to explain and interpret the present invention and do not limit the present invention.

The terminal in the embodiment of the present invention includes, but is not limited to, a mobile wireless telephone, a laptop equipped with a wireless communication card, a personal information portable terminal, and the like.

According to an embodiment of the present invention, first, an advanced terminal working in a first area of a serving advanced base station provides a handover method for handover from the first area to a neighboring cell existing base station or a second area of a neighboring cell advanced base station. .

1 is a flowchart illustrating a handover method according to an embodiment of the present invention. In the case of an advanced terminal working in a first area of a serving advanced base station, as shown in FIG. 1, a handover method according to an embodiment of the present invention. According to this method, the following steps (step S101 to step S103) are included.

Step S101: The advanced terminal acquires some or all contents of the neighbor cell broadcast message of the second area of the serving advanced base station transmitted by the serving advanced base station.

Step S103: The advanced terminal hands over to the second region of the neighbor cell advanced base station or the neighbor cell existing base station based on some or all contents of the acquired neighbor cell broadcast message.

In an embodiment of the present invention, the advanced terminal may acquire some or all contents of the neighbor cell broadcast message of the second region of the serving advanced base station according to the following two methods.

(1) The serving advanced base station may transmit indication information from the first region to the advanced terminal to instruct the advanced terminal to receive the neighbor cell broadcast message in the second region of the serving advanced base station. Includes, but is not limited to, one of a time offset amount between the first region and the second region of the serving advanced base station, carrier information of the second region, and preamble sequence information of the second region. When the advanced terminal is a multi-root terminal, the indication information may further include carrier information of a route used to receive a neighbor cell broadcast message in the second region. The carrier information may be physical layer frequency point information or a physical layer carrier number or a logical carrier number. After receiving the indication information, the advanced terminal receives the neighbor cell broadcast message in the second area of the serving advanced base station according to the indication of the indication information, and then a portion of the neighbor cell broadcast message in the second area of the serving advanced base station or Get all the content.

(2) The serving advanced base station transmits some or all of the contents of the neighbor cell broadcast message of the second region of the serving advanced base station in the first region, and the advanced terminal transmits the content of the neighbor cell broadcast message in the first region of the serving advanced base station; Receive some or all of the content.

In addition, according to the embodiment of the present invention, the advanced terminal acquires a part or all contents of the neighbor cell broadcast message of the second region of the serving advanced base station, and then directly goes to the second region or the neighbor cell existing base station of the neighbor cell advanced base station. Handover is possible. In addition, in the embodiment of the present invention, if the advanced terminal determines to handover to the second region of the neighbor cell advanced base station and the second region of the neighbor cell advanced base station and the first region of the serving advanced base station are located on different carriers, The advanced terminal first performs carrier switching to switch from the current carrier to the first region of the carrier where the target second region is located, and then to the second region from the first region of the carrier.

Therefore, there are four handover methods in the embodiment of the present invention and the four methods are described below.

Method 1

In this method, the serving advanced base station transmits the indication information from the first region to the advanced terminal and the advanced terminal receives the neighbor cell broadcast message of the second region in the second region of the serving advanced base station based on the indication information. Thus, handover from the first region of the serving advanced base station to the second region of the neighbor cell advanced base station or the neighboring cell existing base station is realized. Specifically, in the method, the handover of the advanced terminal includes the following steps.

Step 1, the advanced base station transmits the indication information in the first area to the terminal and based on the indication information, the terminal receives the neighbor cell broadcast message of the second area in the second area of the serving advanced base station.

In a specific embodiment, the indication information transmitted from the base station may include a ranging response message, an adjacent cell broadcast message (AAI-NBR-ADV) in the first region, a super frame head in the first region, and a system configuration description message (AAI). -One of the attached broadcast messages (SCD) and additional broadcast information messages can be carried.

Specifically, the indication information includes, but not limited to, one of a time offset amount between a first region and a second region of the serving advanced base station, carrier information of the second region of the serving advanced base station, and preamble sequence information of the second region. It is not limited.

In addition, if the terminal is a multi-route terminal, the indication information further includes carrier information of a route used for the terminal to receive a neighbor cell broadcast message in the second region. Specifically, the carrier information may be physical layer frequency point information, a physical layer carrier number, or a logical carrier number.

Specifically, the neighbor cell broadcast message of the second region includes at least one of system information of the neighbor cell existing base station and system information of the second region of the neighbor cell advanced base station, wherein the system information includes carrier frequency information and preamble Sequence information and the like.

Step 2, After the terminal successfully receives the neighbor cell broadcast message of the second region, the serving advanced base station voluntarily transmits a handover command message in the first region.

In a specific embodiment, when the serving advanced base station receives the request message transmitted from the terminal, the serving advanced base station may transmit a handover command message from the first region to the terminal in response to the request message. Among them, the request message carries at least target existing base station information and / or second area information of the target advanced base station to which the terminal intends to handover.

Specifically, the handover command message transmitted by the serving advanced base station includes at least target existing base station information recommended by the serving advanced base station and / or second area information of the target advanced base station, and the serving base station by the terminal in a network reconnection process. The reconnection mode mark indicating whether to maintain the connection with the mobile station, the recommended working time at the target base station indicating the specific time at which the terminal starts the network reconnection at the target base station, and the handover command message. Contains one of the handover type marks indicating the type of target base station.

After receiving the handover command, the terminal may send a handover indication message to the serving advanced base station and start handover.

Specifically, the handover indication message includes at least one of an operation code for starting the handover, information on the target existing base station to be handed over or information on the second area of the target advanced base station, and if the terminal is a multi-root terminal, The handover indication message may further include carrier information of a route where the UE performs handover, and the carrier information may be physical layer frequency point information, physical layer carrier number, or logical carrier number.

Preferably, the main carrier of the terminal transmits the request message sent by the terminal, the handover command message sent by the serving advanced base station, and the handover indication message sent by the terminal.

In the process of performing the handover by the terminal, if the handover type mark of the target base station recommended by the serving advanced base station is carried in the handover command message, does the terminal have only the recommended target base station based on the handover type mark? Or it can be determined whether only the LZone of the existing base station or neighboring cell ABS. If the mark is not carried in the handover command message, it indicates that the recommended target base station may not only have an ABS but also have a LZone of an existing base station or an adjacent cell ABS.

Method 2

In the present method, when handing over from the first region of the serving advanced base station to the second region of the neighbor cell advanced base station, if the first region and the second region of the neighbor cell advanced base station are located on different carriers, the terminal has priority. A handover is performed from the carrier in which the current first region is located to the first region of the carrier in which the second region of the neighboring cell advanced base station is located and then switched from the first region of the carrier to the second region. In this method, the method of the terminal obtaining the neighbor cell broadcast message of the second area of the serving advanced base station is similar to the method 1. Specifically, handover is performed through the method including the following steps.

Step 1, the serving advanced base station transmits indication information to the terminal in the first region, and the terminal receives a neighbor cell broadcast message of the second region in the second region of the serving advanced base station based on the indication information.

Since the detailed embodiment of the step is similar to the method 1, a description thereof will be omitted.

Step 2, after the terminal successfully receives the neighbor cell broadcast message of the second region, the serving advanced base station voluntarily transmits a handover command message in the first region or in response to a request message transmitted from the terminal. The advanced base station transmits a handover command message to the terminal in the first region.

Specifically, the information carried in the request message includes at least the target advanced base station and the target carrier information under the target advanced base station to be handed over by the terminal.

Specifically, the handover command message includes at least the target advanced base station and target carrier information recommended by the serving advanced base station and the target advanced base station, and reconnection indicating whether the terminal maintains connection with the serving advanced base station during the reconnection with the network. A mode mark, an operation time at the recommended target base station indicating a specific time at which the terminal starts the network reconnection at the recommended target base station, and a handover type mark indicating the type of the target base station recommended in the handover command message. Contains one piece of information.

Step 3, after receiving the handover command message, the terminal transmits a handover instruction message to the serving advanced base station so that the second region (ie, the target second region) of the target advanced base station (one of the neighbor cell advanced base stations) is transmitted. Initiate a handover to the located carrier.

Specifically, the handover indication message includes at least one of an operation code for starting a handover, information on the target advanced base station to be handed over and information on the target carrier under the target advanced base station, and when the terminal is a multi-root terminal, The over indication message further includes carrier information of a route used by the terminal to perform handover, wherein the carrier information may be physical layer frequency point information or physical layer carrier number or logical carrier number.

Preferably, the main carrier of the terminal transmits the request message transmitted by the terminal, the handover command message transmitted by the serving advanced base station, and the handover indication message transmitted by the terminal.

In the process of the UE handing over from the first region of the serving advanced base station to the carrier in which the second region of the target advanced base station is located, if the UE carries a reconnection mode mark in the handover command message, the terminal is connected to the value of the reconnection mode mark. On the basis of this, it is determined whether to maintain communication with the serving base station.

Step 4, after handing over to the carrier in which the second area of the target advanced base station is located, the new serving advanced base station of the terminal voluntarily transmits a message to the terminal in the first area of the carrier, or the new serving advanced base station is determined by the terminal. The message may be transmitted from the first area to the terminal in response to the request message transmitted from the first message.

Preferably, the request message is a ranging request message (AAI-RNG-REQ). In addition, the request message may or may not include a parameter item whose target value is an area switch.

Specifically, the message transmitted by the new serving advanced base station includes a handover command message (AAI-HO-CMD), a ranging response message (AAI-RNG-RSP), a dedicated area switch message (AAI-ZS-CMD), and a neighbor. It may be one of the cell broadcast messages (AAI-NBR-ADV).

In addition, the message transmitted by the new serving advanced base station includes at least the amount of time offset between the first and second regions of the new serving advanced base station, preamble sequence information of the second region of the new serving advanced base station, and the second of the new serving advanced base station. Other system information of the area and one of the instructions indicating whether the terminal maintains communication with the first area in area switching. In addition, when the terminal is a multi-route terminal, the message further includes carrier information of the route that the terminal uses for area switching.

Step 5, the terminal performs area switching based on the received message from the new serving advanced base station in the first area.

Specifically, in the area switching process, if the message transmitted by the new serving advanced base station carries an instruction indicating whether the terminal maintains communication with the first area in the area switching, the terminal transmits the first message based on the value of the indication. Determine whether to maintain communication with the area.

In addition, in the embodiment of the present invention, if the message sent by the new serving advanced base station does not include an indication indicating whether to maintain communication with the first region during the area switching, the terminal performs network connection of the second region. At the same time, it must maintain communication with the first area.

Method 3

In this method, the serving advanced base station transmits the neighbor cell broadcast message of the second region from the first region to the advanced terminal, and the advanced terminal is adjacent from the first region of the serving advanced base station based on the neighbor cell broadcast message. Handover is performed to a second area of a cell advanced base station or an adjacent cell existing base station. Specifically, the handover of the advanced terminal in the present method includes the following steps.

Step 1, the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region of the advanced base station viewed from the first region to the terminal, and the terminal broadcasts the neighbor cell of the second region of the serving advanced base station in the first region. Receive the content of the message.

Specifically, the neighbor cell broadcast message of the second region includes at least system information of the neighboring cell existing base station, system information of the second region of the neighboring cell advanced base station, for example, the neighboring cell existing base station or the neighboring cell advanced base station. And one of carrier frequency information and preamble sequence information.

In more detail, the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region of the advanced base station in the first region in a unicast or broadcast manner.

In case of transmission by the broadcast method, the neighbor cell broadcast message of the first region (ie, AAI-NBR-ADV), the super frame head of the first region, the system layout description message (AAI-SCD message), and the additional broadcast In the additional broadcast information message, some or all of the contents of the neighbor cell broadcast message (ie, MOB-NBR-ADV) of the second area may be carried.

If the content of the neighbor cell broadcast message is carried in the super frame head of the first region, the content of the neighbor cell broadcast message can be transmitted as a single super frame head information element subpacket (SFH SP IE) and the neighbor cell. The contents of the broadcast message may be transmitted by forming a sub packet together with other sub packets.

In step 2, step 3, the advanced terminal successfully acquires the neighbor cell broadcast message of the second region and then, based on the contents of the neighbor cell broadcast message, the neighbor cell existing base station or neighbor cell advanced from the first region of the serving advanced base station. A handover to the second area of the base station is performed. Since the detailed handover process is similar to step 2 and step 3 in the method 1, description thereof is omitted.

Method 4

The method is adapted to the situation where a handover from the first region of the serving advanced base station to the second region of the neighbor cell advanced base station and the first region of the serving advanced base station and the second region of the neighbor cell advanced base station are located on different carriers. . Specifically, in the method, the advanced terminal acquires the content of the neighbor cell broadcast message in the second region of the serving advanced base station according to the method 3, and then performs handover to the second region of the neighbor cell advanced base station according to the method 2. That is, first handover to the carrier of the target second area and then handover from the first area of the carrier of the target second area to the second area. A detailed description of the process is omitted.

In order to further understand the handover scheme provided in the embodiments of the present invention, the following detailed embodiments will be described.

In the following embodiment, the above-described method of the present invention is described by taking a multi-root advanced terminal as an example, and it is natural that the method described here is adapted to a single-root terminal and a multi-root terminal. The difference between the area handover method of a single root advanced terminal and the area handover method of a multi-root advanced terminal does not require that a single root terminal and a base station negotiate a route carrier to perform area switching, that is, the terminal is the only route. The multi-root terminal may perform the area switching using the current main carrier or the carrier of the other route maintaining communication with the advanced base station or the idle route carrier not used by the current terminal. have.

In the flow chart of the following example, the dashed mark message indicates a selectable message, ie a message that may or may not be transmitted.

Example 1

In the present embodiment, handover of an advanced terminal is performed according to the method 1.

2 is a flowchart of the present embodiment, as shown in FIG. 2, the handover from the first region of the serving advanced base station of the advanced terminal to the neighboring cell existing base station or the second region of the neighboring cell advanced base station is performed in the following steps. It includes.

In step 201, the serving advanced base station voluntarily sends an AAI-RNG-RSP message to the advanced terminal to instruct the advanced terminal to receive the MOB_NBR-ADV message in the second region. Among them, the AAI-RNG-RSP message includes at least the amount of time offset between the first region and the second region of the serving advanced base station, the carrier information and the preamble sequence information of the second region, and the terminal broadcasts the neighbor cell broadcast message in the second region. It includes one of the carrier information of the route used to receive the. The MOB_NBR-ADV message includes system information, for example, carrier frequency information and preamble sequence information, of the second region of the neighbor cell existing base station and the neighbor cell advanced base station.

Step 203, if the UE initiates a handover based on the received MOB_NBR-ADV message, the advanced UE sends an AAI-HO-REQ request message from the main carrier of the UE in the first area to request the handover to start. Among them, the AAI-HO-REQ message includes at least target existing base station information to be handed over and / or second area information of the target advanced base station.

Step 205, in response to the request of the advanced terminal, the serving advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first region.

Among them, the AAI-HO-CMD message includes at least the target existing base station information recommended to the terminal and / or second area information of the target advanced base station, and a message indicating whether the terminal will maintain connection with the serving base station in the network reconnection process. A connection mode mark, an operation time at the recommended target base station indicating the specific time at which the terminal starts to reconnect the network, and a handover type mark indicating the type of the target base station recommended to the terminal in the handover command message. do.

Specifically, in this embodiment, examples of parameters included in the AAI-HO-CMD message are shown in Table 1.

name value Usage mode 00: Handover
01 ： MZone to LZone
10: Hold
11: Handover refusal Handover Mode Instructed by Base Station
00 is used not only for handover from ABS to ABS, but also for handover from ABS to existing base station or ABS to LZone. Reconnect mode Bit 0 = 0, indicating that the connection with the serving base station is not maintained when switching the area
Bit0 = 1, indicates that the connection with the serving base station is maintained when switching the area. If mode value is 00, the parameter should be carried. OFF time offset Difference value between execution time and OFF time, unit is frame OFF time = work time-off time offset if reconnect mode is 0; OFF time = work time + off time offset if reconnect mode is 1 Resource retention time How long MZone will hold AMS resources If the mode value is 00, this parameter should be carried. Handover Base Station Mark 1: Recommended target base station contains only ABS
0: Recommended target base station contains only Lzone of existing base station or neighbor cell ABS If the mode value is 00, this parameter can be carried. If not, it indicates that the recommended target base station not only includes the ABS but also includes the LZone of the existing base station or neighboring cell ABS. Target base station mark If the mode value is 00, the parameter should be carried for each target base station. Execution time Start time to perform an area handover, in frames If the mode value is 00, the parameter should be carried for each target base station. CDMA ranging mark Bit0 = 0, indicating that no dedicated ranging should be performed
Bit0 = 1, indicating that dedicated ranging needs to be performed If the mode value is 00, the parameter should be carried for each target base station. Dedicated ranging code and dedicated ranging opportunity CDMA code and dedicated ranging opportunities If the mode value is 00, the parameter should be carried for each target base station. Handover Optimization Mark skippable steps in the reconnection process. If the mode value is 00, the parameter should be carried for each target base station. Ranging Start End Time Service level indication The service level that can be provided by the target base station and if the mode value is 00, the parameter should be carried for each target base station. Physical layer carrier number If the mode value is 00, the parameter should be carried for each target base station supporting multi-carrier. Multi-carrier handover indication 1 bit, a value of 0 indicates that the AMS turns off all subcarriers and performs a single carrier handover process before performing the handover If the mode value is 00, the parameter should be carried for each target base station supporting multi-carrier.

In this embodiment, examples of parameters included in the AAI-HO-CMD message are shown in Table 2 below.

designation value Usage  mode 00: Handover from ABS to ABS
01 ： MZone to LZone
10: Handover from ABS to existing base station or Lzone of ABS
11: Handover rejection Handover Mode Instructed by Base Station
00 is used for handover from ABS to ABS, and 10 is used for handover from ABS to existing base station or ABS to LZone. Reconnect mode Bit0 = 0, indicating that the connection with the serving base station is not maintained when switching the area
Bit0 = 1, indicates that the connection with the serving base station is maintained when switching the area. If the mode value is 00 or 10, the parameter must be carried. OFF time offset Difference value between execution time and OFF time, unit is frame If the mode value is 00 or 10, the parameter must be carried.
OFF time = work time-off time offset if reconnect mode is 0; OFF time = work time + off time offset if reconnect mode is 1 Resource retention time How long MZone maintains AMS resources If the mode value is 00 or 10, the parameter must be carried. Target base station mark If the mode value is 00 or 10, the parameter should be carried for each target base station. Execution time Start time to perform an area handover, in frames If the mode value is 00 or 10, the parameter should be carried for each target base station. CDMA ranging mark Bit0 = 0, indicating that no dedicated ranging should be performed
Bit0 = 1, indicating that dedicated ranging needs to be performed If the mode value is 00 or 10, the parameter should be carried for each target base station. Dedicated ranging code and dedicated ranging opportunity CDMA code and dedicated ranging opportunities If the mode value is 00 or 10, the parameter should be carried for each target base station. Handover Optimization Indicate a step that can be omitted in the reconnection process. If the mode value is 00 or 10, the parameter should be carried for each target base station. Ranging start end time Service level indication If the service level and mode value that the target base station can provide, 00 or 10, the parameter should be carried for each target base station. Physical layer carrier number If the mode value is 00 or 10, the parameter should be carried for each target base station supporting multi-carrier. Multi carrier
Handover instructions 1 bit, a value of 0 indicates that the AMS turns off all subcarriers and performs a single carrier handover process before performing a handover If the mode value is 00 or 10, the parameter should be carried for each target base station supporting multi-carrier.

Step 207, after receiving the AAI-HO-CMD message, the advanced terminal may start a handover by transmitting a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first region to the serving advanced base station.

The AAI-HO-IND message includes at least one of an operation code for starting a handover, information on a target existing base station to be handed over, information on a second area of a target advanced base station, and carrier information on a route used by the terminal to perform handover. Among them, the carrier information may be physical layer frequency point information or physical layer carrier number or logical carrier number.

In step 209, the advanced terminal uses the route indicated by the serving advanced base station to start a handover to the second area of the target existing base station or the target advanced base station and performs a network reconnection process. In performing the handover, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

Example 2

In the present embodiment, handover is performed according to the method 1, and the serving advanced base station transmits indication information in the super frame head of the first region.

3 is a flowchart of the present embodiment, as shown in FIG. 3, the handover of the advanced terminal in the present embodiment includes the following steps.

In step 301, the serving advanced base station instructs the terminal to receive the MOB_NBR-ADV message in the second region in the super frame head (SFH) of the first region.

Among them, the super frame head of the first region includes at least the amount of time offset between the first region and the second region of the serving advanced base station, the carrier information and the preamble sequence information of the second region, and the terminal broadcasts the neighbor cells in the second region. Contains one of the carrier information of the route used to receive the message. In addition, the MOB_NBR-ADV message includes system information of the neighbor cell existing base station and / or system information of the second region of the neighbor cell advanced base station.

Step 303, the advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first area.

Specifically, the AAI-HO-CMD message includes at least the target existing base station information recommended to the terminal and / or the second area information of the target advanced base station, the reconnection mode mark, the operating time at the recommended target base station, and the handover command message. It includes one of the handover type mark indicating the type of the target base station recommended for.

In step 305, after receiving the AAI-HO-CMD message, the terminal may start a handover by transmitting a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first region to the serving advanced base station.

Among them, the AAI-HO-IND message includes at least one of an operation code for initiating handover, information on a target existing base station to be handed over, information on a second area of a target advanced base station, and carrier information on a route where the terminal performs handover. The carrier information may be physical layer frequency point information or a physical layer carrier number or a logical carrier number.

In step 307, the advanced terminal uses the route indicated by the serving advanced base station and starts handover to the second area of the target existing base station or the target advanced base station when the operation time comes. In area switching, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

Example 3

In the present embodiment, handover is performed according to the method 1, wherein the indication information is carried in an adjacent cell broadcast message (AAI-NBR-ADV) of the first region of the serving advanced base station.

4 is a flowchart of the present embodiment, as shown in FIG. 4, the handover of the advanced terminal in the present embodiment includes the following steps.

In step 401, the serving advanced base station instructs the terminal to receive the MOB_NBR-ADV message in the second region in the neighbor cell broadcast message (AAI-NBR-ADV) of the first region.

Among them, the neighbor cell broadcast message of the first region includes at least a time offset amount between the first region and the second region of the serving advanced base station, carrier information and preamble sequence information of the second region, and the terminal has a neighbor cell in the second region. Contains one of the carrier information of the route used to receive the broadcast message. The MOB_NBR-ADV message includes system information of the neighboring cell existing base station and / or system information of the second region of the neighboring cell advanced base station.

Step 403, the advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first area, wherein the AAI-HO-CMD message includes at least the target existing base station information recommended to the terminal and / or the second of the target advanced base station. One of the area information, the reconnection mode mark, the operation time at the recommended target base station, and the handover type mark.

In step 405, after receiving the AAI-HO-CMD message, the advanced terminal transmits a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first region to the serving advanced base station to start the handover.

Among them, the AAI-HO-IND message includes at least one of an operation code for initiating handover, information on a target existing base station to be handed over, information on a second area of a target advanced base station, and carrier information on a route where the terminal performs handover. Among them, the carrier information may be physical layer frequency point information or physical layer carrier number or logical carrier number.

In step 407, when the advanced terminal reaches an operation time using the route indicated by the serving advanced base station, handover to the second area of the target existing base station or the target advanced base station is started. In area switching, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

Example 4

In the present embodiment, a second region (target target) of an adjacent cell advanced base station (target base station) in which the advanced terminal is handed over from the first region of the serving advanced base station to the second region of the neighbor cell advanced base station according to the method 2 above. Area 2) and the first area of the serving advanced base station are located in different carriers.

FIG. 5 is a flowchart of this embodiment, and as shown in FIG. 5, handover of an advanced terminal in this embodiment includes the following steps.

Step 501, the serving advanced base station voluntarily sends an AAI-NBR-ADV message to the advanced terminal to instruct the advanced terminal to receive the MOB_NBR-ADV message in the second region. Among them, the AAI-NBR-ADV message includes at least the time offset amount between the first region and the second region of the serving advanced base station, the carrier information and the preamble sequence information of the second region, and the terminal broadcasts the neighbor cell broadcast message in the second region. It includes one of the carrier information of the route used to receive the. The MOB_NBR-ADV message includes system information, for example, carrier frequency information and preamble sequence information, of the second region of the neighbor cell existing base station and the neighbor cell advanced base station.

Step 503, the serving advanced base station transmits a handover command message on the main carrier of the terminal in the first region, wherein the handover command message includes at least the target advanced base station recommended by the serving advanced base station and the target carrier information under the target advanced base station, re- One of the connection mode mark, the recommended operation time at the target base station, and the handover type mark.

In step 505, the advanced terminal may initiate a handover by transmitting a handover indication message to the serving advanced base station.

Specifically, the handover indication message includes at least one of an operation code for starting a handover, target advanced base station information to be handed over, target carrier information under the target advanced base station, and carrier information of a route where the terminal performs handover. The carrier information may be physical layer frequency point information or a physical layer carrier number or a logical carrier number.

Step 507, the advanced terminal starts handover to the carrier in which the second region of the target advanced base station is located using the designated route, and the terminal moves from the first region of the serving advanced base station to the second region of the target advanced base station. In the process of handover to the located carrier, the terminal may determine whether to maintain communication with the serving base station based on the value of the reconnection mode mark.

Step 509, after handing over to the carrier in which the second area of the target advanced base station is located, the new serving advanced base station of the terminal voluntarily transmits an area switch command message (AAI-ZS-CMD) to the terminal in the first area of the carrier. do.

Here, in a specific process, the new serving advanced base station may transmit other messages such as a handover command message (AAI-HO-CMD), ranging response message (AAI-RNG-RSP), and neighbor cell broadcast message (AAI- NBR-ADV) to perform handover from the first area to the second area.

The area switch command message may also include at least the amount of time offset between the first and second regions of the new serving advanced base station, the preamble sequence information of the second region of the new serving advanced base station, and other systems of the second region of the new serving advanced base station. Information, an instruction indicating whether the terminal maintains communication with the first area in area switching, and one of carrier information of a route where the terminal performs area switching.

Step 511, the terminal performs the area switching using the designated route to switch to the second area of the new serving advanced base station, and in the area switching process, the advanced terminal instructs whether the terminal maintains communication with the first area. It is determined whether to maintain communication with the first area based on the value of.

Example 5

In the present embodiment, handover is performed according to the method 3 above.

FIG. 6 is a flowchart of the present embodiment, and as illustrated in FIG. 6, the steps of the UE performing handover in the present embodiment are as follows.

Step 601, the terminal receives the content of the neighbor cell broadcast message transmitted by the serving base station in the second region of the advanced base station in a unicast manner on the main carrier of the terminal in the first region of the serving advanced base station, wherein the adjacent The cell broadcast message content includes system information of the neighbor cell existing base station and / or system information of the second region of the neighbor cell advanced base station, for example, carrier frequency, preamble sequence, and the like.

In step 603, the terminal may request a handover start by transmitting a request message (AAI-HO-REQ) from the main carrier of the terminal in the first region based on the received content of the neighbor cell broadcast message. The REQ message includes at least one of the target existing base station information to be handed over and / or the second area information of the target advanced base station.

In step 605, in response to the request of the terminal, the serving advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first region, wherein the AAI-HO-CMD message includes at least the target existing base station information recommended for the terminal; Or, the second area information of the target advanced base station, the reconnection mode mark indicating whether to maintain the connection with the serving base station in the network reconnection process, and the recommended target base station indicating the specific time when the terminal starts the network reconnection One of an operation time and a handover type mark.

Step 607, the terminal starts a handover by sending a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first area to the serving advanced base station. The AAI-HO-IND message includes at least one of an operation code for starting a handover, information on a target existing base station to be handed over, information on a second area of a target advanced base station, and carrier information on a route where the terminal performs handover. The carrier information may be physical layer frequency point information, physical layer carrier number or logical carrier number.

In step 609, the advanced terminal starts handover to the second area of the target existing base station or the target advanced base station when the operation time comes by using the route indicated by the serving advanced base station. In area switching, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

Example 6

In the present embodiment, handover is performed according to the method 3 above.

7 is a flowchart of the present embodiment, as shown in FIG. 7, in the present embodiment, the advanced terminal performs handover as follows.

Step 701, the terminal receives the content of the neighbor cell broadcast message transmitted by the serving advanced base station in the second region of the corresponding advanced base station from the main carrier of the terminal in the first region of the serving advanced base station, wherein the neighbor cell broadcast message The contents include system information of the neighboring cell existing base station and / or system information of the second region of the neighboring cell advanced base station, for example, carrier frequency, preamble sequence, and the like. The serving advanced base station carries the message content in a neighbor cell broadcast message of the first region and transmits the message content in a broadcast manner.

In step 703, the terminal transmits a request message (AAI-HO-REQ) from the main carrier of the terminal in the first area to request handover based on the received content of the neighbor cell broadcast message. The REQ message includes at least one of the target existing base station information to be handed over and / or the second area information of the target advanced base station.

Step 705, in response to the request of the terminal, the serving advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first region, and the AAI-HO-CMD message includes at least target existing base station information recommended for the terminal; Or one of the second area information of the target advanced base station, a reconnection mode mark, an operation time of the recommended target base station, and a handover type mark.

In step 707, the terminal may start a handover by transmitting a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first region to the serving advanced base station.

Among them, the AAI-HO-IND message includes at least one of an operation code for initiating handover, information on a target existing base station to be handed over, information on a second area of a target advanced base station, and carrier information on a route where the terminal performs handover. And the carrier information may be physical layer frequency point information or physical layer carrier number or logical carrier number.

In step 709, the advanced terminal starts handover to the second area of the target existing base station or the target advanced base station when the operation time comes by using the route indicated by the serving advanced base station. In the handover process, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

Example 7

In the present embodiment, handover is performed according to the method 3 above.

8 is a flowchart of the present embodiment, as shown in FIG. 8, in the present embodiment, the UE performs handover as follows.

Step 801, the terminal receives the content of the neighbor cell broadcast message transmitted by the serving advanced base station in the second region of the corresponding advanced base station from the main carrier of the terminal in the first region of the serving advanced base station, wherein the neighbor cell broadcast message The contents include system information of the neighboring cell existing base station and system information of the second region of the neighboring cell advanced base station, for example, carrier frequency, preamble sequence, and the like. The serving base station carries the content of the message in an additional broadcast information message and transmits the message in a broadcast manner. Example parameters are shown in Table 4.

designation value Usage N_NEIGHBORS 8bits Quantity of second area of neighbor cell existing base station and neighbor cell advanced base station in message Base station mark 48bits Each adjacent cell should carry the information for LZone of existing base station or ABS Preamble sequence Each adjacent cell should carry the information for LZone of existing base station or ABS Bandwidth Each adjacent cell should carry the information for LZone of existing base station or ABS Carrier information Each adjacent cell should carry the information for LZone of existing base station or ABS

Step 803, based on the received message, the terminal requests to start a handover by sending a request message (AAI-HO-REQ) on the main carrier of the terminal in the first area, wherein the AAI-HO-REQ message is a minimum hand. The target existing base station information to be overwritten and / or the second area information of the target advanced base station is included.

Step 805, in response to the request of the terminal, the serving advanced base station transmits an AAI-HO-CMD message on the main carrier of the terminal in the first region, the message containing at least the target existing base station information recommended for the terminal and / or the target advanced base station. And one of the second area information of the information, a reconnection mode mark, an operation time at the recommended target base station, and a handover type mark.

In step 807, the terminal starts a handover by sending a handover indication message (AAI-HO-IND) from the main carrier of the terminal in the first region to the serving advanced base station. Among them, the AAI-HO-IND message may include at least one of an operation code for initiating handover, information on a target existing base station to be handovered or information on a second area of a target advanced base station, and carrier information on a route where the terminal performs handover. Include.

In step 809, the advanced terminal starts handover to the second area of the target existing base station or the target advanced base station when the operation time comes by using the route indicated by the serving advanced base station. In the handover process, the multi-root terminal determines whether to maintain communication with the serving base station based on the value of the reconnection mode.

According to an embodiment of the present invention, a handover system is provided.

9 is a diagram illustrating a structure of a handover system according to an embodiment of the present invention, and a handover system according to an embodiment of the present invention as shown in FIG. 9 includes an advanced base station 1 and an advanced terminal 3. Among them, the advanced base station 1 transmits the indication information or the neighbor cell broadcast message of the second region of the advanced base station 1 to the serving base station of the advanced terminal 3 from the first area to the advanced terminal 3. Among them, the indication information is for instructing the advanced terminal 3 to receive the neighbor cell broadcast message in the second area of the advanced base station 1. The advanced terminal 3 operates in the first area of the advanced base station 1, receives the indication information transmitted from the advanced base station 1 or the neighbor cell broadcast message, acquires the contents of the neighbor cell broadcast message, and obtains the neighbor cell broadcast message. Based on the content, the handover to the second area of the neighbor cell advanced base station or the neighbor cell existing base station.

According to the scheme provided by the embodiment of the present invention as described above, the advanced terminal acquires the content of the neighbor cell broadcast message of the second area of the serving advanced base station transmitted by the serving advanced base station and thus is adjacent to the neighboring cell existing base station. System information of the second region of the cell advanced base station is acquired to realize handover from the first region of the current serving advanced base station to the neighboring cell existing base station or the second region of the neighbor cell advanced base station.

The foregoing is a preferred embodiment of the present invention, but not intended to limit the present invention. Those skilled in the art can make various changes in the present invention. And all modifications, equivalents, improvements and the like which are within the spirit and principle of the present invention are within the scope of the present invention.

Claims (29)

For an advanced terminal working in the first area of the serving advanced base station,
The advanced terminal acquires the contents of a neighbor cell broadcast message of a second area of the serving advanced base station transmitted by the serving advanced base station;
And handing over to the second area of the neighbor cell advanced base station or the neighbor cell existing base station based on the content of the neighbor cell broadcast message acquired by the advanced terminal. The method of claim 1,
Acquiring the contents of the neighbor cell broadcast message by the advanced terminal;
The serving advanced base station transmits indication information from the first region to the advanced terminal to instruct the advanced terminal to receive the neighbor cell broadcast message in the second region of the serving advanced base station;
Receiving, by the advanced terminal, the indication information and receiving the neighbor cell broadcast message in a second area of the serving advanced base station to obtain the contents of the neighbor cell broadcast message. The method of claim 2,
The serving advanced base station transmits the indication information to the advanced terminal through one of a ranging response message, a neighbor cell broadcast message of a first region, a super frame head of a first region, a system configuration description message, and an additional broadcast message. Transmitting a message. The method of claim 2,
Wherein the indication information includes at least one of a time offset between a first region and a second region of the serving advanced base station, carrier information of the second region, and preamble sequence information of the second region. . The method of claim 4, wherein
If the advanced terminal is a multi-root terminal, the indication information is
And further includes carrier information of a route used for the advanced terminal to receive a neighbor cell broadcast message in the second region.
Wherein the carrier information comprises one of physical layer frequency point information, a physical layer carrier number, and a logical carrier number. The method of claim 1,
Acquiring the neighbor cell broadcast message by the advanced terminal
The serving advanced base station transmits content of an adjacent cell broadcast message of a second region of the serving advanced base station in the first region,
And receiving, by the advanced terminal, the contents of the neighbor cell broadcast message. The method of claim 6,
And wherein the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region in the first region to include a broadcast scheme or a unicast scheme. The method of claim 7, wherein
When the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region in a broadcast manner, the serving advanced base station is
The serving advanced base station carries the content of the neighbor cell broadcast message of the second region in the neighbor cell broadcast message of the first region;
The serving advanced base station carries the content of the neighbor cell broadcast message of the second region in the super frame head of the first region;
The serving advanced base station carries the content of a neighbor cell broadcast message of the second region in a system configuration description message;
The serving advanced base station transmits the content of the neighbor cell broadcast message of the second region through one of the methods of carrying the content of the neighbor cell broadcast message of the second region to the additional broadcast message. How to. The method of claim 8,
If the serving advanced base station carries the contents of the neighbor cell broadcast message of the second region in the super frame head of the first region, the contents of the neighbor cell broadcast message of the second region are exclusively superframe head information element sub. And forming a subpacket by combining the contents of the neighbor cell broadcast message of the second area with other subpackets. The method according to any one of claims 2 to 9,
The parameter carried in the neighbor cell broadcast message of the second region of the serving advanced base station is
Neighboring system information of the existing base station and / or system information of the second region of the neighboring cell advanced base station,
And the system information includes carrier frequency information and preamble sequence information. The method according to any one of claims 2 to 9,
The step of the advanced terminal handover to the existing area of the neighboring cell advanced base station or the neighboring cell advanced base station
Sending, by the serving advanced base station, a handover command message from the first region to the advanced terminal to instruct the advanced terminal to handover to the second region of the neighbor cell advanced base station or to an existing cell existing base station;
And after the advanced terminal receives the handover command message, transmitting a handover indication message to the serving advanced base station to start handover to a second region of the neighbor cell advanced base station or to an existing cell of the neighbor cell. How to feature. The method of claim 11,
The information carried in the handover command message
Information of a target existing base station recommended by the serving advanced base station to the advanced terminal,
Information of a second area of a target advanced base station recommended by the serving advanced base station to the advanced terminal,
A reconnection mode mark indicating whether the advanced terminal maintains connection with the serving advanced base station in a network reconnection process;
A recommended operating time at the target advanced base station or target existing base station for instructing the advanced terminal to specify a specific time to start network reconnection at the target advanced base station or target existing base station;
And at least one of a handover type mark indicating a type of a target base station recommended for the advanced terminal in the handover command message. The method of claim 12,
If the handover type message is carried in the handover command message, the advanced terminal distinguishes the type of target base station recommended by the serving advanced base station in the handover command message based on the handover type mark. The method of claim 11,
Before the serving advanced base station transmits the handover command message
And receiving, by the serving advanced base station, a request message transmitted from the advanced terminal. The method of claim 14,
And the parameter carried in the request message includes at least one of information of a target existing base station to be handed over by the advanced terminal, and information of a second area of the target advanced base station to be handed over by the advanced terminal. The method of claim 11,
The information carried in the handover indication message includes at least one of an operation code for starting the handover by the advanced terminal, information of a target existing base station to be handed over, or information of a second area of a target advanced base station. How to. The method of claim 16,
If the advanced terminal is a multi-root terminal, the information carried in the handover instruction message is
The advanced terminal further includes carrier information of the route used to perform the handover,
Wherein the carrier information comprises one of physical layer frequency point information, a physical layer carrier number, and a logical carrier number. The method according to any one of claims 2 to 9,
If the advanced terminal is handed over to the second region of the target advanced base station and the second region of the target advanced base station and the first region of the serving advanced base station are located in different carriers, the advanced terminal is the second cell of the neighbor cell advanced base station. Handover to an existing base station
The advanced terminal hands over from a carrier in which a first region of the serving advanced base station is located to a target carrier in which a second region of a target advanced base station is located;
And the advanced terminal handing over from the first region of the target carrier of the target advanced base station to the second region of the target carrier of the target advanced base station. The method of claim 18,
The advanced terminal handovering from the carrier in which the first region of the serving advanced base station is located to the target carrier in which the second region of the neighboring cell advanced base station is located;
A serving advanced base station sends a handover command message in its first region to instruct the advanced terminal to handover to an adjacent cell advanced base station; and / or
And after the advanced terminal receives the handover command message, transmitting a handover indication message to the serving advanced base station and handing over to the target carrier of a target advanced base station. 20. The method of claim 19,
Before the serving advanced base station transmits the handover command message
And receiving, by the serving advanced base station, a request message transmitted from the advanced terminal. 20. The method of claim 19,
The information carried in the handover indication message includes at least one of an operation code for starting the handover by the advanced terminal, information of a target advanced base station to be handed over, and target carrier information in a target advanced base station. Way. The method of claim 21,
If the advanced terminal is a multi-route terminal, the information carried in the handover instruction message further includes carrier information of the route where the advanced terminal performs handover.
And wherein the carrier information comprises one of physical layer frequency point information, physical layer carrier number, logical carrier number. The method of claim 18,
The advanced terminal handovering from the first region of the target carrier of the target advanced base station to the second region of the neighbor cell advanced base station;
The target advanced base station transmits a message to the advanced terminal in the first region of the target carrier to instruct the advanced terminal to perform area switching;
Receiving, by the advanced terminal, the message and handing over from the first area of the target advanced base station to the second area of the target advanced base station according to the indication of the message. Send indication information for instructing an advanced terminal to receive the neighbor cell broadcast message in the second region of the advanced base station or a neighbor cell broadcast message in the second region of the advanced base station from the first region to the advanced terminal Advanced base stations,
Based on the contents of the neighbor cell broadcast message obtained by acquiring the contents of the neighbor cell broadcast message by working in the first area of the advanced base station and receiving the indication information transmitted by the advanced base station or the neighbor cell broadcast message. And an advanced terminal for handing over to the second region of the neighbor cell advanced base station or the neighbor cell existing base station. For an advanced terminal working in the first area of the serving advanced base station,
And acquiring, by the advanced terminal, contents of a neighbor cell broadcast message of a second area of the serving advanced base station transmitted by the serving advanced base station. 26. The method of claim 25,
Acquiring the neighbor cell broadcast message by the advanced terminal
The serving advanced base station transmits content of an adjacent cell broadcast message of a second region of the serving advanced base station in the first region,
And receiving, by the advanced terminal, the contents of the neighbor cell broadcast message. The method of claim 26,
And wherein the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region in the first region to include a broadcast scheme or a unicast scheme. The method of claim 27,
When the serving advanced base station transmits the content of the neighbor cell broadcast message of the second region in a broadcast manner, the serving advanced base station
The serving advanced base station carries the content of the neighbor cell broadcast message of the second region in the neighbor cell broadcast message of the first region;
The serving advanced base station carries the content of the neighbor cell broadcast message of the second region in the super frame head of the first region;
The serving advanced base station carries the content of a neighbor cell broadcast message of the second region in a system configuration description message;
The serving advanced base station transmits the content of the neighbor cell broadcast message of the second region through one of the methods of carrying the content of the neighbor cell broadcast message of the second region to the additional broadcast message. How to. The method according to any one of claims 26 to 28,
Parameters carried in the neighbor cell broadcast message of the second region of the serving advanced base station include system information of the neighbor cell existing base station and / or system information of the second region of the neighbor cell advanced base station;
And wherein the system information includes carrier frequency information and preamble sequence information.

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