WO2014198026A1

WO2014198026A1 - Method and apparatus for sending cell handover command

Info

Publication number: WO2014198026A1
Application number: PCT/CN2013/077127
Authority: WO
Inventors: 赵鹏
Original assignee: 华为技术有限公司
Priority date: 2013-06-13
Filing date: 2013-06-13
Publication date: 2014-12-18
Also published as: CN104170503A

Abstract

Embodiments of the present invention provide a method and an apparatus for sending a cell handover command. The method comprises: determining a handover command, the handover command being used for instructing a terminal to be handed over from a source channel of a source cell to a target channel of a target cell; and sending, on the target cell, the handover command to the terminal. In the embodiments of the present invention, by sending, on a target cell, a handover command to a terminal, the cell handover success rate of the terminal is improved.

Description

Method and device for transmitting cell handover command

Embodiments of the present invention relate to the field of wireless communications, and, more particularly, to a method and apparatus for transmitting a cell handover command. Background technique

In the Global System of Mobile communication (GSM) system, when a terminal moves from a source cell to a target cell, and by measuring that the signal quality of the target cell is stronger than that of the source cell, a cell handover procedure is initiated.

In the prior art, the cell handover command is sent to the terminal on the source cell. The signal quality received by the terminal in the source cell is generally deteriorated before the handover, which may cause the terminal to fail to receive the handover command. The terminal cell handover failed. Summary of the invention

The embodiment of the invention provides a method and a device for transmitting a cell handover command, so as to improve the success rate of the handover of the terminal.

In a first aspect, a method for transmitting a cell handover command is provided, including: determining a handover command, where the handover command is used to indicate that a terminal switches from a source channel of a source cell to a target channel of a target cell; The terminal sends the switching command.

With the first aspect, in an implementation manner of the first aspect, the sending, by the target cell, the handover command to the terminal includes: sending, to the terminal, a first channel on the target cell The switching command, the first channel is the same as the channel type and the transmission timing of the source channel, and when the handover command is sent on the first channel, the frequency of the first channel and the source channel The frequency is the same.

With the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, the first channel is the target channel, the method further includes: receiving a channel activation command sent by the base station controller, where The channel activation command is used to activate a channel that is the same as the channel type and transmission timing of the source channel as the target channel.

With reference to the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, the first channel is a channel on a virtual carrier of the target cell, and a first message in the target cell Before the transmitting the handover command to the terminal, the method further includes: establishing a virtual carrier in the target cell; determining, on the virtual carrier, a channel that is the same as the source channel transmission timing as the first channel; The channel type of the first channel is determined as the channel type of the source channel.

With the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are pre-synchronized. Before the sending the handover command to the terminal on the first channel of the target cell, the method further includes: determining a channel type and a slot number of the source channel; Sending the handover command to the terminal on a channel includes: when the source channel and the channel type of the target channel are the same, sending the handover to the terminal on the first channel Command, the first channel is the target channel.

In another implementation manner of the first aspect, the determining, by the receiving a channel activation command of the channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique within the base station controller; determining, according to the carrier number and the channel number The channel type and slot number of the source channel.

With the first aspect or the foregoing implementation manner, in another implementation manner of the foregoing aspect, the sending, by the terminal, the handover command to the terminal on the first channel of the target cell further includes: when the source When the channel is different from the channel type or the slot number of the target channel, the handover command is sent to the terminal on the first channel, where the first channel is a channel on a virtual carrier of the target cell, And the first channel is the same as the time slot in which the source channel is located.

In combination with the first aspect or the foregoing implementation manner, in another implementation manner of the foregoing aspect, before the sending the handover command to the terminal on the first channel of the target cell, the method further includes: The control node corresponding to the cell receives the source channel related information, where the source channel related information includes a first frame number corresponding to the frame on which the handover command is sent on the source channel, and a frequency point of the source channel; The sending the handover command to the terminal on the first channel of the target cell includes: sending the handover command to the terminal on the first channel in a period of the frame corresponding to the first frame number.

With reference to the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, the determining the handover command includes: requesting, by using a control node corresponding to the source cell, handover information, where the handover information is used to indicate Decoding the content of the command; generating the switching command according to the switching information. With the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, the sending, by the target cell, the handover command to the terminal includes: performing, according to the configured delay parameter, the target Sending, by the cell, the handover command to the terminal, so that the signal corresponding to the handover command sent by the target cell to the terminal corresponds to the handover command sent by the source cell to the terminal The signal generates a diversity gain, wherein the delay parameter is used to indicate a time when the handover command sent by the target cell to the terminal is different from a handover command sent by the source cell to the terminal.

In combination with the first aspect or the foregoing implementation manner, in another implementation manner of the first aspect, a sum of a TA value of the source cell and the target cell is less than a predetermined threshold, where the predetermined threshold is used to indicate that Within the range of the predetermined threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

A second aspect, a method for transmitting a cell handover command, includes: receiving a handover command sent by a base station controller, where the handover command is used to instruct a terminal to switch from a source channel of a source cell to a target channel of a target cell; The control node corresponding to the target cell sends the handover information, where the handover information is used to indicate the content of the handover command.

With reference to the second aspect, in an implementation manner of the second aspect, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are previously processed synchronously, The method further includes: transmitting source channel related information to a control node corresponding to the target cell, where the source channel related information includes a first frame number corresponding to a frame on the source channel that sends the handover command, and the source a frequency point of the channel; transmitting, by the source channel, the handover command to the terminal during a period of the frame corresponding to the first frame number.

With reference to the second aspect or the foregoing implementation manner, in another implementation manner of the second aspect, the sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that Within the range of the predetermined threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

A third aspect, the method for transmitting a cell handover command, includes: determining, by a base station controller, a handover command, where the handover command is used to indicate that a terminal switches from a source channel of a source cell to a target channel of a target cell; Controlling, by the control node corresponding to the target cell, the handover command to the terminal in the target cell.

With reference to the third aspect, in an implementation manner of the third aspect, before the determining, by the base station controller, the handover command, the method further includes: the base station controller generating a channel for activating the target channel An activation command, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique in the base station controller; and the base station controller sends the control node corresponding to the target cell And the channel activation command, so that the control node corresponding to the target cell determines whether the channel type and the slot number of the source channel and the target channel are the same according to the carrier number and the channel number of the source channel.

With the third aspect or any of the foregoing implementation manners, in another implementation manner of the third aspect, in a case where the source channel and the channel type of the target channel are the same, The base station controller controls the control node corresponding to the target cell to send the handover command to the terminal in the target cell, where: the base station controller controls a control node corresponding to the target cell to be on the target channel. Sending the handover command to the terminal.

With the third aspect or any of the foregoing implementation manners, in another implementation manner of the third aspect, in a case where the source channel is different from a channel type or a slot number of the target channel, The base station controller controls the control node corresponding to the target cell to send the handover command to the terminal in the target cell, where: the base station controller controls, by the base station controller, a control node corresponding to the target cell in the target cell. Transmitting the handover command to the terminal on a channel, the first channel is a channel on a virtual carrier of the target cell, and the first channel has the same channel type and a slot number as the source channel .

A fourth aspect, the apparatus for transmitting a cell handover command, includes: a first determining unit, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of a source cell to a target channel of a target cell; And a unit, configured to send, by the target cell, the handover command determined by the determining unit to the terminal.

With reference to the fourth aspect, in an implementation manner of the fourth aspect, the sending unit is specifically configured to send, by using the first channel on the first channel of the target cell, the handover command, the first channel and the The channel type of the source channel is the same as the transmission timing, and when the handover command is sent on the first channel, the frequency of the first channel is the same as the frequency of the source channel.

With reference to the fourth aspect, or the foregoing implementation manner, in another implementation manner of the fourth aspect, the first channel is the target channel, the device further includes: a first receiving unit, configured to receive a base station controller A channel activation command is sent, the channel activation command is used to activate a channel that is the same as the channel type and the transmission timing of the source channel as the target channel.

With reference to the fourth aspect, or the foregoing implementation manner, in another implementation manner of the fourth aspect, the first channel is a channel on a virtual carrier of the target cell, and the device further includes: And a second determining unit, configured to determine, on the virtual carrier, a channel that is the same as the source channel transmission time as the first channel; The channel type is determined as the channel type of the source channel.

With the fourth aspect or the foregoing implementation manner, in another implementation manner of the fourth aspect, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are pre-synchronized. And the device further includes: a third determining unit, configured to determine a channel type and a slot number of the source channel; the sending unit is specifically configured to: when the source channel and the channel type of the target channel When the time slot number is the same, the handover command is sent to the terminal on the first channel, and the first channel is the target channel.

With the fourth aspect or the foregoing implementation manner, in another implementation manner of the fourth aspect, the third determining unit is specifically configured to receive a channel activation command that is sent by the base station controller and used to activate the target channel, where The channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique within the base station controller; determining a channel type of the source channel according to the carrier number and the channel number Slot number.

With the fourth aspect or the foregoing implementation manner, in another implementation manner of the fourth aspect, the sending unit is further configured to: when the source channel and the channel type of the target channel are different from each other, Sending, by the first channel, the handover command to the terminal, where the first channel is a channel on a virtual carrier of the target cell, and the first channel is the same as a time slot of the source channel.

With reference to the fourth aspect, or the foregoing implementation manner, in another implementation manner of the fourth aspect, the apparatus further includes: a second receiving unit, configured to receive source channel related information from a control node corresponding to the source cell, The source channel related information includes a first frame number corresponding to a frame on which the handover command is sent on the source channel, and a frequency point of the source channel; the sending unit is specifically configured to be in the first frame number The switching command is sent to the terminal on the first channel during a period of the corresponding frame.

With reference to the fourth aspect, or the foregoing implementation manner, in another implementation manner of the fourth aspect, the first determining unit is specifically configured to request, by using a control node corresponding to the source cell, the switching information, where the switching information is used. Instructing a content of the switching command; generating the switching command according to the switching information.

With the fourth aspect or the foregoing implementation manner, in another implementation manner of the fourth aspect, the sending unit is specifically configured to delay the target cell to the terminal according to the configured delay parameter. Transmitting the handover command, so that a signal corresponding to the handover command sent by the target cell to the terminal and a signal corresponding to the handover command sent by the source cell to the terminal generate a diversity gain, where The delay parameter is used to indicate a time when the handover command sent by the target cell to the terminal is different from the handover command sent by the source cell to the terminal.

With reference to the fourth aspect, or the foregoing implementation manner, in another implementation manner of the fourth aspect, the sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that Within the range of the predetermined threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

A fifth aspect, a device for transmitting a cell handover command, includes: a receiving unit, configured to receive a handover command sent by a base station controller, where the handover command is used to instruct a terminal to switch from a source channel of a source cell to a target cell of a target cell And a first sending unit, configured to send, to the control node corresponding to the target cell, the switching information, where the switching information is used to indicate the content of the switching command.

With reference to the fifth aspect, in an implementation manner of the fifth aspect, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are synchronously processed in advance, The device further includes: a second sending unit, configured to send source channel related information to a control node corresponding to the target cell, where the source channel related information includes a first frame corresponding to a frame on the source channel that sends the switching command a frame number, and a frequency point of the source channel, where the third sending unit is configured to send the switching command to the terminal by using the source channel in a period of the frame corresponding to the first frame number.

With the fifth aspect or the foregoing implementation manner, in another implementation manner of the fifth aspect, a sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that Within the range of the predetermined threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

The sixth aspect provides a base station controller, including: a determining unit, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell; and the control unit is configured to control The control node corresponding to the target cell sends the handover command to the terminal in the target cell.

With reference to the sixth aspect, in an implementation manner of the sixth aspect, the method further includes: a generating unit, configured to generate a channel activation command for activating the target channel, where the channel activation command carries a carrier of the source channel And a channel number, wherein the carrier number is unique within the base station controller; and a sending unit, configured to send the channel activation command to a control node corresponding to the target cell, so that The control node corresponding to the target cell determines whether the channel type and the slot number of the source channel and the target channel are the same according to the carrier number and the channel number of the source channel.

With the sixth aspect, or any one of the foregoing implementation manners, in another implementation manner of the sixth aspect, in a case that the source channel and the channel type of the target channel are the same, The control unit is specifically configured to control a control node corresponding to the target cell to send the handover command to the terminal on the target channel.

With the sixth aspect, or any one of the foregoing implementation manners, in another implementation manner of the sixth aspect, in a case that the source channel is different from the channel type or the slot number of the target channel, The control unit is specifically configured to control, by the control node corresponding to the target cell, the handover command to be sent to the terminal on the first channel of the target cell, where the first channel is a channel on a virtual carrier of the target cell And the first channel has the same channel type and slot number as the source channel.

In the embodiment of the present invention, the success rate of the terminal cell handover is improved by sending a handover command to the terminal in the target cell. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a schematic flowchart of a method for sending a cell handover command according to an embodiment of the present invention. 2 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention.

FIG. 3 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention.

4 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention.

FIG. 5 is a schematic block diagram of a device for transmitting a cell handover command according to an embodiment of the present invention. FIG. 6 is a schematic block diagram of a transmitting apparatus of a cell handover command according to another embodiment of the present invention. Figure 7 is a schematic block diagram of a base station controller in accordance with one embodiment of the present invention.

FIG. 8 is a schematic block diagram of a device for transmitting a cell handover command according to another embodiment of the present invention. FIG. 9 is a schematic block diagram of a transmitting apparatus of a cell handover command according to another embodiment of the present invention. Figure 10 is a schematic block diagram of a base station controller in accordance with another embodiment of 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 a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

It should be understood that, in the embodiment of the present invention, the terminal includes, but is not limited to, user equipment (UE, User Equipment), mobile station (MS, Mobile Station), mobile terminal (Mobile Terminal), mobile telephone (Mobile Telephone), mobile phone (handset And a portable device, etc., the terminal can communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a mobile phone (or "cellular" phone) ), a computer with wireless communication function, etc., the terminal can also be a portable, portable, handheld, computer built-in or vehicle-mounted mobile device.

It should be understood that the technical solution of the present invention can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunication System (UMTS), etc.

FIG. 1 is a schematic flowchart of a method for sending a cell handover command according to an embodiment of the present invention. The method is performed by a control node corresponding to the target cell, for example, may be a control base station of the target cell, or may be an independent logical entity. The method of Figure 1 includes:

110. Determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell.

120. Send a handover command to the terminal in the target cell.

In the embodiment of the present invention, the success rate of the terminal cell handover is improved by sending a handover command to the terminal in the target cell.

The specific manner of determining the handover command in step 110 is not specifically limited in the embodiment of the present invention. Optionally, determining the handover command may include: receiving, by the control node corresponding to the source cell, handover information, where the handover information is used to indicate a content of the handover command; and generating a handover command according to the handover information. The control node corresponding to the source cell may be a control base station of the source cell, or may be an independent logical entity. The handover command may be generated by the base station controller, and sent by the base station controller to the control node corresponding to the source cell. After receiving the handover command, the control node corresponding to the source cell sends the control node to the control node corresponding to the target cell.

It should be noted that, in the embodiment of the present invention, the handover command in step 110 has different forms in different modes. For example, in GSM, the handover command may be Hand Over COMMOND; in WCDMA hard handover, the handover command may be Physical layer channel reconfiguration signaling; In WCDMA soft handover, the handover command may be active set update signaling; in LTE, the handover command may be RRC connection reconfiguration signaling.

Optionally, as another embodiment, determining the handover command may further include: receiving a handover command sent by the base station controller, that is, the base station controller directly sends the handover command to the control node of the target cell.

The embodiment of the present invention does not limit the specific manner in which the handover command is sent to the terminal in the target cell in step 120.

Optionally, as another embodiment, the sending, by the target cell, the handover command to the terminal may include: sending a handover command to the terminal on the first channel of the target cell, where the channel type and the transmission timing of the first channel are the same as the source channel, and When the handover command is transmitted on the first channel, the frequency of the first channel is the same as the frequency of the source channel. The same transmission timing means that the first channel is the same as the source channel in the time domain. For example, when the source cell and the target cell are synchronous cells, the same transmission timing may refer to the first channel and the time slot used by the source channel. the same. The same frequency point means that the first channel is the same as the source channel in the frequency domain.

It should be noted that the frequency of the first channel and the frequency of the source channel may be different. When the handover command is sent to the terminal by using the first channel, the frequency of the first channel may be adjusted to make the frequency of the first channel. Same as the source channel frequency point, after transmitting the switching command, the frequency of the first channel is adjusted back to the original frequency point.

It should be understood that the embodiment of the present invention does not limit the specific form of the first channel, and may be any channel in the target cell that satisfies the above requirements.

Specifically, the first channel may be a target channel, and the method of FIG. 1 may further include: receiving a channel activation command sent by the base station controller, where the channel activation command is used to activate channel type and transmission with the source channel. The same channel is sent as the target channel. That is, when the base station controller activates the target channel, the channel having the same channel type and transmission timing as the source channel is selected as the target channel. By using the target channel as the first channel, it is not necessary to introduce other channel resources to assist the terminal to perform cell handover, thereby effectively saving channel resources used by the cell handover.

Optionally, the first channel is a channel on the virtual carrier of the target cell, and before the handover command is sent to the terminal on the first channel of the target cell, the method may further include: establishing a virtual carrier in the target cell; The channel with the same transmission timing is determined as the first channel; the channel type of the first channel is determined as the channel type of the source channel.

Optionally, as another embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are previously processed synchronously, and before the handover command is sent to the terminal on the first channel of the target cell, The method may include: determining a channel type and a slot number of the source channel; sending the handover command to the terminal on the first channel of the target cell may include: when the channel type and the slot number of the source channel and the target channel are the same, at the first A handover command is sent to the terminal on the channel, and the first channel is a target channel.

Specifically, when the source cell and the target cell belong to the same base station, the source cell and the target cell are synchronous cells; when the source cell and the target cell do not belong to the same base station, the source cell and the target cell are asynchronous cells, and Global Position System (GPS) Global network synchronization or air interface soft synchronization function, so that the source cell is synchronized with the target cell. Further, since the source cell and the target cell do not belong to the same base station, high-speed data communication technology between the BB Cloud technology or other sites can be used to ensure mutual transmission of messages and data between the two cells.

The embodiment of the present invention does not limit the specific manner of determining the channel type and the slot number of the source channel. For example, after the base station controller determines the channel type and the slot number of the source channel, it directly sends the control node corresponding to the target cell. The control node corresponding to the source cell may be directly sent to the control node corresponding to the target cell, and the specific form of the sending is not limited in the embodiment of the present invention, and the foregoing information may be carried in other messages, or may send separate signaling. Notify the above information.

Optionally, as an embodiment, the determining the channel type and the slot number of the source channel may include: receiving a channel activation command sent by the base station controller to activate the target channel, where the channel activation command carries the carrier number of the source channel and a channel number, wherein the carrier number is unique within the base station controller; determining a channel type and a slot number of the source channel according to the carrier number and the channel number. Specifically, the CHANNEL ACTIVATION structure definition in the existing protocol can be modified, and an optional field "Destination Cell HO Command" is added, as shown in Table 1: Table 1: CHANNEL ACTIVATION structure

Detailed definition of Destination Cell HO Command: 3⁄4 port shown in Table 2:

Table 2: Destination Cell HO Command Structure

8 7 6 5 4 3 2 1

Element identifier 1

Length _ 2

3

TRX Number (TRX) 4

Channel Number 5

The TRX Number represents the carrier number of the source channel, and the carrier number is unique within the base station controller, that is, the base station controller uniformly numbers all the carriers it controls; the Channel Number represents the channel number of the source channel, and the definition can be the same as the conventional protocol. The TRX Number and the Channel Number form the index information of the source channel, and the control node corresponding to the target cell can obtain the information required by the terminal d and the area switch through the index information.

Optionally, as another embodiment, sending the handover command to the terminal on the first channel of the target cell may further include: when the source channel is different from the channel type or the slot number of the target channel, on the first channel to the terminal Sending a handover command, the first channel is a channel on a virtual carrier of the target cell, and the first channel is the same as the time slot in which the source channel is located. Specifically, the virtual carrier that has been established may be searched for in the target cell. If the same time slot as the time slot of the source channel is idle in the virtual carrier that has been established, the idle time slot of the virtual carrier is used to send a handover command. It is also possible to directly establish a new virtual carrier and send a handover command on the same time slot of the newly established virtual carrier as the source channel. When a handover command is sent on the channel of the virtual carrier, the channel type of the channel is configured as the channel type of the source channel, and the frequency of the channel is adjusted to be the same frequency point as the source channel.

It should be noted that, in the embodiment of the present invention, the specific manner in which the control node corresponding to the target cell determines the frequency of the source channel and the frame number to be transmitted is not limited. It can be obtained by the base station controller or by the control node corresponding to the source cell.

Specifically, before the sending the handover command to the terminal on the first channel of the target cell, the method further includes: receiving source channel related information from the control node corresponding to the source cell, where the source channel related information includes a frame that sends a handover command on the source channel. The first frame number, and the frequency of the source channel; sending the handover command to the terminal on the first channel of the target cell may include: sending a handover command to the terminal on the first channel in a period of the frame corresponding to the first frame number .

The embodiment of the present invention does not specifically limit the determining manner of the switching command in step 110, for example, It can be obtained directly from the base station controller, and can also be requested from the control node corresponding to the source cell.

Optionally, as an embodiment, determining the handover command may include: receiving, by the control node corresponding to the source cell, handover information, where the handover information is used to indicate a content of the handover command; and generating a handover command according to the handover information.

In this embodiment of the present invention, the handover command may be sent only in the target cell, or may be simultaneously sent in the source cell and the target cell. Sending a handover command simultaneously between the source cell and the target cell can form a diversity gain and improve the reception quality of the terminal.

Specifically, when the source cell and the target cell send the handover command at the same time, the sending the handover command to the terminal in the target cell may include: sending a handover command to the terminal in the target cell according to the configured delay parameter, so as to be in the target cell to the terminal. The signal corresponding to the transmitted handover command and the signal corresponding to the handover command sent by the source cell to the terminal generate a diversity gain, where the delay parameter is used to indicate a handover command sent by the target cell to the terminal and a handover command sent to the terminal at the source cell. The time difference.

It should be noted that when the source cell and the target cell are asynchronous cells, the time advance (TA, Timing Advance) value of the neighboring cell cannot be obtained in advance, if the source cell and the target cell TA value are too large, and the source cell and the target are When the cell sends a handover command at the same time, the gain effect may not be generated, which may cause interference to the terminal. Therefore, the sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that within the range of the predetermined threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain. For example, the sum of the TAs of the two cells can be defined to be less than 4.

The embodiment of the present invention does not limit the specific manner of determining that the sum of the two cells TA is less than a predetermined threshold. Optionally, the physical distance between the two cells may be analyzed by using an electronic map. For example, when the spacing between the two cells is less than 2000 meters, the sum of the TAs of the two cells may be considered to be less than a predetermined threshold.

Optionally, the method for dynamic scheduling of the base station controller may be used to determine whether the cell meets the requirements for asynchronous handoff. For example, the base station controller may count, in a certain period (eg, one week), the sum of the TAs of the source cell and the target cell when each cell performs the asynchronous handover of the cell, if the ratio of the sum of the TAs is less than a predetermined threshold is greater than a threshold. If the value (such as 99%), the cell is considered to meet the requirements of asynchronous cell handover. In addition, the base station controller needs to re-plan when transmitting cell expansion, cell capacity reduction, frequency hopping, and neighbor relationship change.

With reference to FIG. 1 , a method for transmitting a cell handover command according to an embodiment of the present invention is described in detail from the perspective of a control node corresponding to a target cell. The following describes the method according to the present invention from the perspective of a control node corresponding to a source cell. A method of transmitting a cell handover command in an embodiment. It should be understood that the interaction between the control node corresponding to the source cell and the control node corresponding to the target cell and the related characteristics and functions of the control node corresponding to the target cell corresponding to the source cell are corresponding to the description of the control node side corresponding to the target cell. Duplicate descriptions are omitted.

2 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention. The method of Figure 2 may be performed by a control node corresponding to the source cell, e.g., a control base station of the source cell, or an independent logical entity. The method of Fig. 2 corresponds to the method of Fig. 1, and a detailed description is omitted as appropriate. The method of Figure 2 includes:

210. Receive a handover command sent by a base station controller, where the handover command is used to instruct the terminal to switch from a source channel of the source cell to a target channel of the target cell.

220. Send handover information to a control node corresponding to the target cell, where the handover information is used to indicate the content of the handover command.

Optionally, as an embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in advance, and the method in FIG. 2 may further include: sending a source to the control node corresponding to the target cell. Channel-related information, the source channel-related information includes a first frame number corresponding to a frame on which the handover command is sent on the source channel, and a frequency point of the source channel; and the source channel sends the source frame to the terminal in a period of the frame corresponding to the first frame number Switch commands.

Optionally, as another embodiment, the sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that the same signal sent by the source cell and the target cell can generate a diversity gain within a range of a predetermined threshold. .

FIG. 3 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention. The method of Figure 3 is performed by a base station controller. The method of Fig. 3 corresponds to the method of Figs. 1 and 2, and a detailed description is omitted as appropriate. The method of Figure 3 includes:

310. The base station controller determines a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell.

320. The base station controller controls the control node corresponding to the target cell to send a handover command to the terminal in the target cell.

Optionally, as an embodiment, before the base station controller determines the handover command, the method further includes: The base station controller generates a channel activation command for activating the target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique within the base station controller; and the base station controller sends a channel to the control node corresponding to the target cell. The command is activated so that the control node corresponding to the target cell determines whether the channel type and the slot number of the source channel and the target channel are the same according to the carrier number and the channel number of the source channel.

Optionally, in another embodiment, when the channel type and the slot number of the source channel and the target channel are the same, the base station controller controls the control node corresponding to the target cell to send the handover command to the terminal in the target cell, including: The base station controller controls the control node corresponding to the target cell to send a handover command to the terminal on the target channel.

Optionally, in another embodiment, when the source channel is different from the channel type or the slot number of the target channel, the base station controller controls the control node corresponding to the target cell to send a handover command to the terminal in the target cell, including: The controller controls the control node corresponding to the target cell to send a handover command to the terminal on the first channel of the target cell, where the first channel is a channel on the virtual carrier of the target cell, and the first channel has the same channel type and time as the source channel. Gap number.

Embodiments of the present invention are described in more detail below with reference to specific examples. It should be noted that the example of FIG. 4 is only intended to assist those skilled in the art in understanding the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications or changes in the form of the embodiment of FIG. 4, and such modifications or variations are also within the scope of the embodiments of the present invention.

4 is a schematic flow chart of a method for transmitting a cell handover command according to another embodiment of the present invention. In the example of FIG. 4, the source cell and the target cell are synchronous cells or asynchronous cells that have been previously processed in synchronization, and the handover command is transmitted on the target channel of the target cell.

410. The base station controller sends a channel activation command to a control node corresponding to the target cell.

The channel activation command is used to activate the target channel, and the channel activation command carries the carrier number and the channel number of the source channel, and specifically, can be carried in the manner shown in Table 1.

420. The control node corresponding to the target cell determines a channel type and a slot number of the source channel according to the carrier number and the channel number of the source channel.

Specifically, when the channel type and the slot number of the source channel and the target channel are the same, the handover command is sent on the target channel; when the channel type or the slot number of the source channel and the target channel are different, the virtual carrier is A handover command is sent on the same channel as the source channel slot.

430. The control node corresponding to the target cell sends a handover command to the control node corresponding to the source cell. Information request message

The request message requests the content of the handover command, and may also request the source channel to send the frame number and frequency point of the request command.

440. The control node corresponding to the source cell sends a handover command information request confirmation message to the control node corresponding to the target cell.

450. The control node corresponding to the target cell sends a channel activation command acknowledgement message to the base station controller.

460. The base station controller sends a handover command to a control node corresponding to the source cell.

470. The control node corresponding to the source cell sends the handover information to the control node corresponding to the target cell, where the handover information includes a content of the handover command, a frequency point of the source channel, and a transmission frame number.

It should be noted that in the case of frequency hopping, the frequency of each frame may be different, so each of the above frame data needs to carry frequency point information.

480. The control node corresponding to the target cell sends a handover command to the terminal.

Before transmitting, the downlink frequency of the channel for transmitting the handover command is adjusted to the frequency point in the handover information, and the handover command is sent at the specified transmission frame number. When the handover command is sent on the channel of the virtual carrier, it is also necessary to set the channel type of the channel of the virtual carrier to the channel type of the source channel.

490. The control node corresponding to the source cell sends a handover command to the terminal.

In the embodiment of the present invention, the success rate of the terminal cell handover is improved by sending a handover command to the terminal in the target cell. Further, the source cell and the target cell simultaneously send a handover command, thereby forming a diversity gain, and improving the reception quality of the terminal.

The method for transmitting a cell handover command according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 4, and a device for transmitting a cell switching command according to an embodiment of the present invention will be described in detail below with reference to FIG. 5 to FIG.

FIG. 5 is a schematic block diagram of a device for transmitting a cell handover command according to an embodiment of the present invention. The apparatus 500 of FIG. 5 includes a first determining unit 510 and a transmitting unit 520.

a first determining unit 510, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

The sending unit 520 is configured to send, by the target cell, a handover command determined by the determining unit 510 to the terminal.

In the embodiment of the present invention, the success rate of the terminal cell handover is improved by sending a handover command to the terminal in the target cell. Optionally, as an embodiment, the sending unit 520 is specifically configured to send a handover command to the terminal on the first channel of the target cell, where the first channel is the same as the channel type and the transmission timing of the source channel, and is sent on the first channel. When the command is switched, the frequency of the first channel is the same as the frequency of the source channel.

Optionally, as another embodiment, the first channel is a target channel, and the apparatus 500 further includes: a first receiving unit, configured to receive a channel activation command sent by the base station controller, where the channel activation command is used to activate the channel with the source channel The channel with the same type and transmission timing is used as the target channel.

Optionally, as another embodiment, the first channel is a channel on the virtual carrier of the target cell, and the apparatus 500 further includes: an establishing unit, configured to establish a virtual carrier in the target cell; and a second determining unit, configured to use the virtual carrier The channel on the same as the source channel transmission timing is determined as the first channel; the channel type of the first channel is determined as the channel type of the source channel.

Optionally, in another embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in advance. The device 500 further includes: a third determining unit, configured to determine the source channel. The channel type and the time slot number; the sending unit 520 is specifically configured to: when the channel type and the slot number of the source channel and the target channel are the same, send a handover command to the terminal on the first channel, where the first channel is a target channel.

Optionally, as another embodiment, the third determining unit is specifically configured to receive, by the base station controller, a channel activation command for activating the target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number Unique within the base station controller; determining the channel type and slot number of the source channel based on the carrier number and the channel number.

Optionally, in another embodiment, the sending unit 520 is further configured to: when the source channel is different from the channel type or the slot number of the target channel, send a handover command to the terminal on the first channel, where the first channel is the target cell. The channel on the virtual carrier, and the first channel is the same as the time slot in which the source channel is located.

Optionally, in another embodiment, the apparatus 500 further includes: a second receiving unit, configured to receive source channel related information from a control node corresponding to the source cell, where the source channel related information includes a frame that sends a handover command on the source channel. The first frame number, and the frequency of the source channel; the sending unit 520 is specifically configured to send a handover command to the terminal on the first channel in a period of the frame corresponding to the first frame number.

Optionally, as another embodiment, the first determining unit is specifically configured to request, by the control node corresponding to the source cell, the switching information, where the switching information is used to indicate the content of the switching command, and generate a switching command according to the switching information.

Optionally, as another embodiment, the sending unit 520 is specifically configured to delay sending a handover command to the terminal in the target cell according to the configured delay parameter, so as to send the handover to the terminal in the target cell. The signal corresponding to the command and the signal corresponding to the handover command sent by the source cell to the terminal generate a diversity gain, where the delay parameter is used to indicate the time difference between the handover command sent by the target cell to the terminal and the handover command sent by the source cell to the terminal. .

For the operation and/or function of each unit of the device 500, reference may be made to the method of Fig. 1 above, and in order to avoid repetition, no further details are provided herein.

FIG. 6 is a schematic block diagram of a transmitting apparatus of a cell handover command according to another embodiment of the present invention. The apparatus 600 of FIG. 6 includes a receiving unit 610 and a first transmitting unit 620.

The receiving unit 610 is configured to receive a handover command sent by the base station controller, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell.

The first sending unit 620 is configured to send, to the control node corresponding to the target cell, switching information, where the switching information is used to indicate the content of the switching command.

Optionally, as an embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in advance, and the device 600 further includes: a second sending unit, configured to correspond to the target cell. The control node sends the source channel related information, where the source channel related information includes a first frame number corresponding to the frame on which the handover command is sent on the source channel, and a frequency point of the source channel; and a third sending unit, configured to be corresponding to the first frame number During the period of the frame, a handover command is sent to the terminal through the source channel.

For the operation and/or function of each unit of the device 600, reference may be made to the method of Fig. 2 above, and in order to avoid repetition, no further details are provided herein.

Figure 7 is a schematic block diagram of a base station controller in accordance with one embodiment of the present invention. The base station controller 700 of FIG. 7 includes a determining unit 710 and a control unit 720.

a determining unit 710, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell; The control unit 720 is configured to control, by the control node corresponding to the target cell, a handover command to the terminal in the target cell.

Optionally, as an embodiment, the base station controller 700 may further include: a generating unit, configured to generate a channel activation command for activating a target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number The sending unit is configured to send a channel activation command to the control node corresponding to the target cell, so that the control node corresponding to the target cell determines the channel type of the source channel and the target channel according to the carrier number and the channel number of the source channel. Whether the slot numbers are the same.

Optionally, in another embodiment, where the channel type and the slot number of the source channel and the target channel are the same, the control unit 720 is specifically configured to control, by the control node corresponding to the target cell, to send a handover to the terminal on the target channel. command.

Optionally, in another embodiment, where the source channel is different from the channel type or the slot number of the target channel, the control unit 720 is specifically configured to control the control node corresponding to the target cell to be on the first channel of the target cell. The terminal sends a handover command, the first channel is a channel on the virtual carrier of the target cell, and the first channel has the same channel type and slot number as the source channel.

For the operation and/or function of each unit of the base station controller 700, reference may be made to the method of FIG. 3 above. To avoid repetition, details are not described herein again.

FIG. 8 is a schematic block diagram of a device for transmitting a cell handover command according to another embodiment of the present invention. The apparatus 800 of FIG. 8 includes a processor 810 and a transmitter 820.

The processor 810 is configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell.

The transmitter 820 is configured to send, by the target cell, a handover command determined by the processor 810 to the terminal. In the embodiment of the present invention, the success rate of the terminal cell handover is improved by sending a handover command to the terminal in the target cell.

Optionally, as an embodiment, the transmitter 820 is specifically configured to send a handover command to the terminal on the first channel of the target cell, where the first channel is the same as the channel type and the transmission timing of the source channel, and is sent on the first channel. When the command is switched, the frequency of the first channel is the same as the frequency of the source channel.

Optionally, as another embodiment, the first channel is a target channel, and the apparatus 800 further includes: a first receiver, configured to receive a channel activation command sent by the base station controller, where the channel activation command is used to A channel that is the same as the channel type and transmission timing of the source channel is activated as the target channel.

Optionally, as another embodiment, the first channel is a channel on a virtual carrier of the target cell, the processor 810 is further configured to establish a virtual carrier in the target cell, and determine, on the virtual carrier, the same channel as the source channel transmission time as First channel; determining a channel type of the first channel as a channel type of the source channel.

Optionally, as another embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in synchronization, and the processor 810 is further configured to determine a channel type and a slot number of the source channel. The transmitter 820 is specifically configured to: when the channel type and the slot number of the source channel and the target channel are the same, send a handover command to the terminal on the first channel, where the first channel is a target channel.

Optionally, as another embodiment, the processor 810 is specifically configured to receive a channel activation command sent by the base station controller to activate the target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is The base station controller is unique; the channel type and the slot number of the source channel are determined according to the carrier number and the channel number.

Optionally, in another embodiment, the transmitter 820 is further configured to: when the source channel is different from the channel type or the slot number of the target channel, send a handover command to the terminal on the first channel, where the first channel is the target cell. The channel on the virtual carrier, and the first channel is the same as the time slot in which the source channel is located.

Optionally, in another embodiment, the apparatus 800 further includes: a second receiver, configured to receive source channel related information from a control node corresponding to the source cell, where the source channel related information includes a frame that sends a handover command on the source channel. The first frame number, and the frequency of the source channel; the transmitter 820 is specifically configured to send a handover command to the terminal on the first channel in a period of the frame corresponding to the first frame number.

Optionally, as another embodiment, the processor 810 is specifically configured to request switching information from a control node corresponding to the source cell, where the switching information is used to indicate a content of the handover command, and generate a handover command according to the handover information.

Optionally, as another embodiment, the transmitter 820 is specifically configured to delay sending a handover command to the terminal in the target cell according to the configured delay parameter, so that the signal corresponding to the handover command sent by the target cell to the terminal is in the source cell. The signal corresponding to the handover command sent to the terminal generates a diversity gain, where the delay parameter is used to indicate a time when the handover command sent by the target cell to the terminal is different from the handover command sent by the source cell to the terminal.

Optionally, as another embodiment, a sum of TA values of the source cell and the target cell is less than a predetermined threshold, where the predetermined threshold is used to indicate that the source cell and the target cell are sent within a range of a predetermined threshold. The same signal can produce a diversity gain.

For the operation and/or function of each unit of the device 800, reference may be made to the method of Fig. 1 above, and in order to avoid repetition, no further details are provided herein.

FIG. 9 is a schematic block diagram of a transmitting apparatus of a cell handover command according to another embodiment of the present invention. The apparatus 900 of FIG. 9 includes a receiver 910 and a first transmitter 920.

The receiver 910 is configured to receive a handover command sent by the base station controller, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell.

The first transmitter 920 is configured to send, to the control node corresponding to the target cell, handover information, where the handover information is used to indicate the content of the handover command.

Optionally, as an embodiment, the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in advance, and the device 900 further includes: a second transmitter, configured to correspond to the target cell. The control node sends the source channel related information, where the source channel related information includes a first frame number corresponding to the frame on which the handover command is sent on the source channel, and a frequency point of the source channel; and a third sending unit, configured to be corresponding to the first frame number During the period of the frame, a handover command is sent to the terminal through the source channel.

For the operation and/or function of each unit of the device 900, reference may be made to the method of Fig. 2 above, and in order to avoid repetition, no further details are provided herein.

Figure 10 is a schematic block diagram of a base station controller in accordance with another embodiment of the present invention. The base station controller 1000 of FIG. 10 includes a memory 1010 and a processor 1020.

The memory 1010 is configured to store instructions required for execution by the processor;

The processor 1020 is configured to determine, according to an instruction stored by the memory 1010, a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell; and the control node corresponding to the control target cell is in the target cell to the terminal. Send a switch command.

Optionally, as an embodiment, the processor 1020 is further configured to generate a target channel for activation. The channel activation command, the channel activation command carries the carrier number and the channel number of the source channel, wherein the carrier number is unique within the base station controller; the base station controller 1000 further includes: a sending unit, configured to send a channel to the control node corresponding to the target cell The command is activated so that the control node corresponding to the target cell determines whether the channel type and the slot number of the source channel and the target channel are the same according to the carrier number and the channel number of the source channel.

Optionally, in another embodiment, where the channel type and the slot number of the source channel and the target channel are the same, the processor 1020 is specifically configured to control, by the control node corresponding to the target cell, to send a handover to the terminal on the target channel. command.

Optionally, in another embodiment, where the source channel is different from the channel type or the slot number of the target channel, the processor 1020 is specifically configured to control the control node corresponding to the target cell to be on the first channel of the target cell. The terminal sends a handover command, the first channel is a channel on the virtual carrier of the target cell, and the first channel has the same channel type and slot number as the source channel.

For the operation and/or function of each unit of the base station controller 1000, reference may be made to the method of FIG. 3 above. To avoid repetition, details are not described herein again.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A method for transmitting a cell handover command, comprising:

Determining a handover command, the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

Sending the handover command to the terminal in the target cell.

The method according to claim 1, wherein the sending, by the target cell, the handover command to the terminal comprises:

Transmitting the handover command to the terminal on a first channel of the target cell, where the first channel is the same as a channel type and a transmission timing of the source channel, and sending the handover on the first channel When commanded, the frequency of the first channel is the same as the frequency of the source channel.

The method of claim 2, wherein the first channel is the target channel, the method further includes:

And receiving a channel activation command sent by the base station controller, where the channel activation command is used to activate a channel that is the same as the channel type and the transmission timing of the source channel as the target channel.

The method according to claim 2, wherein the first channel is a channel on a virtual carrier of the target cell, and the handover is sent to the terminal on a first channel of the target cell. Before the command, it also includes:

Establishing a virtual carrier in the target cell;

Determining, on the virtual carrier, a channel that is the same as the source channel transmission timing as the first channel;

The channel type of the first channel is determined as the channel type of the source channel.

The method according to claim 2, wherein the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are synchronously processed in advance.

Before sending the handover command to the terminal on the first channel of the target cell, the method further includes:

Determining a channel type and a slot number of the source channel;

The sending the handover command to the terminal on the first channel of the target cell includes: when the source channel and the channel type of the target channel are the same, the target channel is used as The first channel, and transmitting the handover command to the terminal on the first channel.

The method according to claim 5, wherein the determining a channel type and a slot number of the source channel includes:

Receiving, by the base station controller, a channel activation command for activating the target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique within the base station controller;

Determining a channel type and a slot number of the source channel according to the carrier number and the channel number.

The method according to claim 5 or 6, wherein the sending the handover command to the terminal on the first channel of the target cell further comprises:

When the source channel is different from the channel type or the slot number of the target channel, the channel on the virtual carrier of the target cell is used as the first channel, and the terminal is on the first channel And transmitting the handover command, where the first channel is the same as a time slot in which the source channel is located.

The method according to any one of claims 5-7, wherein before the sending the handover command to the terminal on the first channel of the target cell, the method further includes:

Receiving source channel related information from a control node corresponding to the source cell, where the source channel related information includes a first frame number corresponding to a frame used to send the handover command on the source channel, and the source channel Frequency point

The sending the handover command to the terminal on the first channel of the target cell includes: sending, according to the time period of the frame corresponding to the first frame number, the first channel to the terminal Switch commands.

The method according to any one of claims 1 to 8, wherein the determining the switching command comprises:

And requesting, by the control node corresponding to the source cell, handover information, where the handover information is used to indicate a content of the handover command;

And generating the switching command according to the switching information.

The method according to any one of claims 1 to 9, wherein the transmitting, by the target cell, the handover command to the terminal comprises:

Sending, by the target cell, the handover command to the terminal according to the configured delay parameter, so that the signal corresponding to the handover command sent by the target cell to the terminal is in the source cell The signal corresponding to the handover command sent by the terminal generates a diversity gain, where the delay parameter is used to indicate a handover command sent by the target cell to the terminal and a handover sent by the source cell to the terminal The time the command differs.

The method according to any one of claims 1 to 10, wherein a sum of TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that the predetermined Within the threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

A method for transmitting a cell handover command, comprising:

Receiving a handover command sent by the base station controller, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

And transmitting, to the control node corresponding to the target cell, handover information, where the handover information is used to indicate the content of the handover command.

The method according to claim 12, wherein the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that have been synchronously processed in advance, the method Also includes:

Transmitting source channel related information to a control node corresponding to the target cell, where the source channel related information includes a first frame number corresponding to a frame on which the handover command is sent on the source channel, and a frequency point of the source channel ;

Transmitting, by the source channel, the handover command to the terminal during a period of the frame corresponding to the first frame number.

The method according to claim 12 or 13, wherein the sum of the TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that the predetermined threshold is within a range. The same signal transmitted by the source cell and the target cell can generate a diversity gain.

A method for transmitting a cell handover command, comprising:

The base station controller determines a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

The base station controller controls a control node corresponding to the target cell to send the handover command to the terminal in the target cell.

The method according to claim 15, wherein before the determining, by the base station controller, the handover command, the method further includes:

The base station controller generates a channel activation command for activating the target channel, where the channel activation command carries a carrier number and a channel number of the source channel, where the carrier number is unique within the base station controller; The base station controller sends the channel activation command to a control node corresponding to the target cell, so that the control node corresponding to the target cell determines the source channel and the target according to the carrier number and the channel number of the source channel. Whether the channel type and slot number of the channel are the same.

The method according to claim 16, wherein, in a case where the source channel and the channel type of the target channel are the same, the base station controller controls the target cell corresponding to And sending, by the control node, the handover command to the terminal in the target cell, where: the base station controller controls a control node corresponding to the target cell to use the target channel as a first channel, and in the first channel The switching command is sent to the terminal.

The method according to claim 16 or 17, wherein, in a case where the source channel and the channel type or the slot number of the target channel are different, the base station controller controls the target cell to correspond to The sending, by the control node, the handover command to the terminal in the target cell, includes:

The base station controller controls a control node corresponding to the target cell to use a channel on a virtual carrier of the target cell as the first channel, and send the to the terminal on a first channel of the target cell. A handover command, wherein the first channel has the same channel type and slot number as the source channel.

A device for transmitting a cell handover command, comprising:

a first determining unit, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

And a sending unit, configured to send, by the target cell, the switching command determined by the determining unit to the terminal.

The device according to claim 19, wherein the sending unit is configured to send the handover command to the terminal on a first channel of the target cell, the first channel and the The channel type of the source channel is the same as the transmission timing, and when the handover command is sent on the first channel, the frequency of the first channel is the same as the frequency of the source channel.

The device according to claim 20, wherein the first channel is the target channel, and the device further comprises:

And a first receiving unit, configured to receive a channel activation command sent by the base station controller, where the channel activation command is used to activate a channel that is the same as the channel type and the transmission timing of the source channel as the target channel.

22. The apparatus according to claim 20, wherein the first channel is the target The channel on the virtual carrier of the standard cell, the device further includes:

Establishing a unit, configured to establish a virtual carrier in the target cell;

a second determining unit, configured to determine, on the virtual carrier, a channel that is the same as the source channel transmission timing as the first channel; and determine a channel type of the first channel as a channel type of the source channel.

The device according to claim 20, wherein the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in synchronization beforehand.

The device also includes:

a third determining unit, configured to determine a channel type and a slot number of the source channel;

The sending unit is specifically configured to: when the source channel and the channel type of the target channel are the same, use the target channel as the first channel, and on the first channel The terminal sends the handover command.

The device according to claim 23, wherein the third determining unit is configured to receive a channel activation command sent by the base station controller to activate the target channel, where the channel activation command carries Determining a carrier number and a channel number of the source channel, wherein the carrier number is unique within the base station controller; determining a channel type and a slot number of the source channel according to the carrier number and the channel number.

The device according to claim 23 or 24, wherein the sending unit is further configured to: when the source channel is different from a channel type or a slot number of the target channel, A channel on the virtual carrier is used as the first channel, and the handover command is sent to the terminal on the first channel, where the first channel is the same as a time slot in which the source channel is located.

The device according to any one of claims 23 to 25, wherein the device further comprises:

a second receiving unit, configured to receive source channel related information from a control node corresponding to the source cell, where the source channel related information includes a first frame number corresponding to a frame on the source channel that sends the switching command, and a frequency point of the source channel;

The sending unit is specifically configured to send the switching command to the terminal on the first channel in a period of a frame corresponding to the first frame number.

The device according to any one of claims 19 to 26, wherein the first determining unit is specifically configured to request switching information from a control node corresponding to the source cell, where the switching information is And a content for indicating the switching command; generating the switching command according to the switching information.

The device according to any one of claims 19 to 27, wherein the sending unit is specifically configured to delay sending the switching command to the terminal in the target cell according to the configured delay parameter. Generating, in order to generate a diversity gain, a signal corresponding to the handover command sent by the target cell to the terminal, and a signal corresponding to the handover command sent by the source cell to the terminal, where the delay parameter is used. And indicating a time when the handover command sent by the target cell to the terminal is different from a handover command sent by the source cell to the terminal.

The device according to any one of claims 19 to 28, wherein a sum of TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that the reservation is Within the threshold, the same signal transmitted by the source cell and the target cell can generate a diversity gain.

30. A device for transmitting a cell handover command, comprising:

a receiving unit, configured to receive a handover command sent by the base station controller, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell;

And a first sending unit, configured to send, to the control node corresponding to the target cell, the switching information, where the switching information is used to indicate the content of the switching command.

The device according to claim 30, wherein the source cell and the target cell are frame synchronization cells, or the source cell and the target cell are asynchronous cells that are processed in advance, the device Also includes:

a second sending unit, configured to send source channel related information to a control node corresponding to the target cell, where the source channel related information includes a first frame number corresponding to a frame on the source channel that sends the switching command, and a frequency point of the source channel;

And a third sending unit, configured to send the switching command to the terminal by using the source channel in a period of the frame corresponding to the first frame number.

The device according to claim 30 or 31, wherein a sum of TA values of the source cell and the target cell is less than a predetermined threshold, and the predetermined threshold is used to indicate that the predetermined threshold is within a range The same signal transmitted by the source cell and the target cell can generate a diversity gain.

33. A base station controller, comprising:

a determining unit, configured to determine a handover command, where the handover command is used to indicate that the terminal switches from a source channel of the source cell to a target channel of the target cell; And a control unit, configured to control, by the control node corresponding to the target cell, to send the handover command to the terminal in the target cell.

The base station controller according to claim 33, further comprising: a generating unit, configured to generate a channel activation command for activating the target channel, where the channel activation command carries the source channel a carrier number and a channel number, wherein the carrier number is unique within the base station controller;

a sending unit, configured to send the channel activation command to a control node corresponding to the target cell, so that the control node corresponding to the target cell determines the source channel and the target according to a carrier number and a channel number of the source channel Whether the channel type and slot number of the channel are the same.

The base station controller according to claim 34, wherein, in a case where the source channel and the channel type of the target channel are the same,

The control unit is specifically configured to control a control node corresponding to the target cell to use the target channel as a first channel, and send the handover command to the terminal on the first channel.

The base station controller according to claim 34 or 35, wherein, in a case where the source channel and the channel type of the target channel are different from each other,

The control unit is specifically configured to control, by the control node corresponding to the target cell, a channel on a virtual carrier of the target cell as the first channel, and send the channel to the terminal on a first channel of the target cell. The handover command, wherein the first channel has the same channel type and slot number as the source channel.