WO2018121653A1

WO2018121653A1 - Communication method and communication device

Info

Publication number: WO2018121653A1
Application number: PCT/CN2017/119293
Authority: WO
Inventors: 耿婷婷; 曾清海; 张宏平; 黄曲芳; 戴明增; 刘亚林
Original assignee: 华为技术有限公司
Priority date: 2016-12-30
Filing date: 2017-12-28
Publication date: 2018-07-05
Also published as: CN108271210A; CN108271210B

Abstract

Provided in the embodiments of the present application are a communication method, a terminal and a communication device. The communication method provided in the embodiments of the present application comprises: a terminal transmitting first information at a first cell, a communication device receiving the first information transmitted by the terminal at the first cell, the first information being used to request for the system information of a second cell; the communication device, according to the first information, transmitting, at the first cell, the system information of the second cell to the terminal, and the terminal receiving, at the first cell, the system information of the second cell. The communication method, the terminal and the communication device provided in the embodiments of the present application enable the communication device to transmit the system information of the second cell according to the request of the terminal, saving the communication resources of the communication device and the terminal, and further improving communication efficiency.

Description

Communication method and communication device

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference in its entirety in the the the the the the the the the the

Technical field

Embodiments of the present application relate to the field of communications, and more particularly, to a communication method and a communication device.

Background technique

In a wireless communication network, before the terminal accesses the cell, it needs to obtain system information (SI) of the cell. In a communication system, such as a new ratio (NR) system, system information of a cell can be classified into minimum system information (minimum SI) and other system information (other SI). The minimum SI may include related parameters for cell selection, initial cell access, and indication information of the other SI; the other SI may include other system information except the minimum SI in the system information.

Generally, the communication device periodically broadcasts the minimum SI of the cell in a certain cell, and transmits the other SI of the cell in the cell based on the request of the terminal. That is, in order for the terminal to obtain the system information or the minimum SI of the cell in time, the communication device needs to periodically broadcast the system information or the minimum SI of the cell in the cell.

With the advancement of communication technology, mobile communication continues to develop toward high-speed, large-data traffic. At the same time, the spectrum demand for communication transmission is also increasing. As the high-band spectrum has a large amount of available bandwidth, it will become an important resource for meeting the large-capacity and large-bandwidth requirements of future communications, and will also become the NR communication technology, the 3rd generation partnership project (3GPP) and advanced Long-term evolution (LTE-A) further evolved target spectrum. Among them, the high-band spectrum includes the centimeter wave frequency band and the millimeter wave frequency band; the centimeter wave frequency band generally refers to the spectrum in the range of 3 GHz to 30 GHz, and the millimeter wave frequency band generally refers to the spectrum in the range of 30 GHz to 300 GHz.

The high-band wave is used in cellular communication as high-frequency cellular communication, and the area covered by the high-frequency cellular communication beam signal is called a high-frequency cell. In the process of high-frequency cellular communication, in order to compensate for the path loss of high-band waves, techniques such as beamforming are needed to improve the communication coverage quality of high-frequency cellular communication. Therefore, when the high frequency cell transmits system information, it may be necessary to transmit system information or partial system information in each beam direction.

However, in the case where the deployment of the cell is dense or the cell uses the high frequency band, the communication device periodically broadcasts the system information or the minimum SI, which not only occupies a large amount of resources, but also causes large interference between the cells.

Summary of the invention

The communication method, the terminal, and the communication device provided by the embodiments of the present application can save communication resources of the communication device and the terminal, and improve communication efficiency.

In a first aspect, the embodiment of the present application provides a communication method, including: receiving, by a communication device, first information sent by a terminal in a first cell, where the first information is used to request system information of a second cell; And transmitting, by the device, system information of the second cell to the terminal in the first cell according to the first information.

In the communication method of the embodiment of the present application, the communication device sends the system information of the second cell in the first cell based on the request of the terminal, which can save resources in the second cell, and can send the first resource in the first cell. The system information of the second cell may also enable the terminal to acquire system information of the second cell in advance. The terminal acquires the system information of the second cell in advance, which can shorten the delay of the terminal monitoring, accessing, or camping on the second cell.

Moreover, the terminal can be made to read the system information of the second cell from the broadcast message of the first cell or the second cell without multiple or repeated, and the power consumption of the terminal can be reduced.

In particular, when the second cell is a high frequency cell or a small cell, transmitting system information of the second cell in the first cell may also reduce interference between the high frequency cell or the small cell.

In a possible implementation, the first information includes the identifier information of the second cell, and the identifier information includes at least one of the following information: a cell frequency, a physical cell identifier, a global cell identifier, a cell identifier, and a cell. index.

In a possible implementation, before the communications device receives the first information sent by the terminal in the first cell, the communications method further includes: the communications device sending the second in the first cell Cell information of the cell, where the cell information includes the identifier information.

In the embodiment of the present application, the communication device sends the information of the second cell that the communication device can send the system information in the first cell to the terminal, so that the terminal can prevent the terminal from requesting the system information of the cell that cannot be sent in the first cell to the communication device, so that Save communication resources.

In a possible implementation manner, the cell information further includes at least one of the following information: cell access indication information, and valid information of the cell system information.

In the embodiment of the present application, the communication device sends the cell access indication information, so that the terminal can prevent the terminal from requesting the system information of the cell that is not allowed to access or camp, so that the communication resource can be saved. The communication device sends the valid information of the cell system information, so that the terminal can determine the validity of the system information of the second cell according to the valid information, so that the system information can be reasonably used to camp, access or monitor the second cell.

In a possible implementation, the communications device sends, according to the first information, system information of the second cell to the terminal in the first cell, including: the communications device according to the The first information is used to send system information of the second cell by using other system information except the system information in the system information of the first cell.

In a possible implementation manner, the communications device sends, according to the first information, system information of the second cell to the terminal in the first cell, where: the communications device is in the The system information of the second cell is broadcasted in the first cell or transmitted through the radio network control signaling.

In the embodiment of the present application, the communication device sends the system information of the second cell by using a broadcast manner, which can save communication resources.

In a possible implementation, the communications method further includes: the communications device determining that the system information of the second cell is changed; the communications device transmitting the second cell change in the first cell After the system information.

In a possible implementation manner, the communications method further includes: the communications device receives second information that is sent by the terminal in the first cell, and the second information is used to request the second cell The changed system information; the transmitting, by the communications device, the system information after the second cell change in the first cell, where the communications device sends the first cell according to the second information The system information after the second cell is changed.

In a possible implementation manner, the communications method further includes: the communications device sending first indication information in the first cell, where the first indication information is used to indicate system information of the second cell A change has occurred.

In a possible implementation manner, the communication method further includes: the communication device transmitting, in the first cell, access priority information of a cell set, where the cell set includes the first cell and/or The second cell.

In a possible implementation manner, the communications method further includes: the communications device transmitting, to other communications devices, access priority information of a set of cells, where the set of cells includes the first cell and/or the Two cells.

In a second aspect, the embodiment of the present application provides a communication method, including: a terminal sending first information in a first cell, where the first information is used to request system information of a second cell; System information of the second cell is received in a cell.

In the communication method of the embodiment of the present application, the terminal sends a request message requesting system information of the second cell to the communication device in the first cell, so that the communication device can send the system information of the second cell in the first cell based on the request of the terminal. The system information in the second cell can be saved, and the system information of the second cell can be sent in the first cell, and the system information of the second cell can be obtained in advance. The terminal acquires the system information of the second cell in advance, which can shorten the delay of the terminal monitoring, accessing, or camping on the second cell.

Moreover, the terminal does not need to read the system information of the second cell from the broadcast message of the first cell or the second cell multiple times or repeatedly, and the power consumption of the terminal can be reduced.

In a possible implementation, the first information includes the identifier information of the second cell, and the identifier information includes at least one of the following information: a cell frequency, a physical cell identifier, a global cell identifier, a cell identifier, and a cell index.

In a possible implementation manner, the communications method further includes: the terminal receiving cell information of the second cell in the first cell, where the cell information includes the identifier information.

In the embodiment of the present application, the terminal may request the system information of the second cell from the communication device according to the cell information of the second cell, so that the terminal can prevent the terminal from requesting, by the communication device, system information of the cell that cannot be sent in the first cell, thereby saving communication. Resources.

In the embodiment of the present application, the terminal may determine, according to the cell access indication information, whether to request the system information of the second cell from the communication device, so as to prevent the terminal from requesting the system information of the cell that is not allowed to access or stay, but the communication may be saved. Resources. The terminal can determine the validity of the system information of the second cell according to the valid information of the system information of the cell, so that the system information can be reasonably used to camp, access or monitor the second cell.

In a possible implementation manner, the valid information of the cell system information includes a tag value and/or an effective time of the cell system information.

In a possible implementation, the sending, by the terminal, the first information in the first cell, includes: determining, by the terminal, that a trigger condition is met, where the triggering condition is used to trigger the terminal to send the first information; The terminal sends the first information in the first cell.

In a possible implementation manner, the triggering condition includes at least one condition that: the terminal detects a synchronization signal of the second cell; the terminal receives a broadcast message of the second cell, The broadcast message includes the identifier information; the terminal determines that the signal quality in the second cell is higher than a quality threshold; and the terminal receives the indication information used to indicate that the system information of the second cell is changed.

In a possible implementation manner, the communications method further includes: the terminal receiving the changed system information of the second cell in the first cell.

In a possible implementation, before the terminal receives the system information after the second cell change in the first cell, the communication method further includes: the terminal sending in the first cell The second information is used to request system information after the second cell is changed.

In a possible implementation, before the terminal sends the second information in the first cell, the communications method further includes: the terminal receiving the first indication information in the first cell, The first indication information is used to indicate that the system information of the second cell is changed.

In a possible implementation manner, the communications method further includes: the terminal camping on or accessing the second cell according to system information of the second cell.

In a possible implementation manner, the communication method further includes: the terminal receiving valid information of system information of the second cell in the second cell; and the terminal according to the system of the second cell The information camps on or accesses the second cell, including: the terminal determining, according to the valid information of the system information of the second cell, that the system information of the second cell is valid; the terminal according to the second cell The system information resides or accesses the second cell.

In a possible implementation manner, the communications method further includes: the terminal receiving system information after the second cell change in the second cell.

In a possible implementation manner, the communications method further includes: the terminal sending third information in the second cell, where the third information is used to request system information after the second cell is changed.

In a possible implementation manner, the communications method further includes: the terminal receiving second indication information in the second cell, where the second indication information is used to indicate that system information of the second cell occurs change.

In a possible implementation manner, the communications method further includes: the terminal receiving third indication information and information of the first cell in the second cell, where the third indication information is used to indicate The system information of the second cell is changed; the terminal camps or accesses the first cell according to the third indication information and the information of the first cell; the terminal is in the first cell Receiving system information after the change of the second cell.

In a possible implementation manner, the third indication information is further used to indicate a time when the communication device sends the system information after the second cell change in the first cell, where the terminal is in the The receiving, by the first cell, the system information after the second cell is changed, includes: receiving, by the terminal, system information after the second cell change in the first cell at a time indicated by the third indication information.

In the communication method of the embodiment of the present application, the terminal may receive the system information after the second cell change in the first cell in time and accurately according to the time indication information.

In a possible implementation manner, the communications method further includes: the terminal receiving access priority information of a cell set in the first cell, where the cell set includes the first cell and/or a second cell; the terminal performs cell access or cell reselection according to access priority information of the cell set.

In a possible implementation, the terminal performs cell access or cell reselection according to the access priority information of the cell set, where the terminal determines that the second cell does not exist on the terminal. Minimizing the system information; the terminal reduces the access priority of the second cell in the access priority information, and obtains the changed access priority information; the terminal according to the changed access The priority information is used for cell access or cell reselection.

In a third aspect, the embodiment of the present application provides a communication device, where the communication device includes a module for performing the communication method in the first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, the embodiment of the present application provides a communication device, where the communication device includes a module for performing a communication method in a possible implementation manner of any of the second aspect or the second aspect.

In a fifth aspect, an embodiment of the present application provides a communication device, including a receiver, a transmitter, and a processor, where the processor is configured to execute code, and the transmitter and the receiver are configured to communicate with other devices. When the code is executed, the transmitter and receiver are specifically configured to implement the communication method in any one of the possible implementations of the first aspect or the first aspect.

In a sixth aspect, an embodiment of the present application provides a terminal, including a transmitter, a receiver, and a processor, where the processor is configured to execute code, and the transmitter and the receiver are configured to communicate with other devices. When the code is executed, the transmitter and receiver are specifically configured to implement the communication method in any one of the possible implementations of the second aspect or the second aspect.

In a seventh aspect, the embodiment of the present application provides a computer readable medium storing program code for execution by a communication device, the program code comprising the first aspect or the first aspect An instruction of a communication method in any of the possible implementations.

In an eighth aspect, the embodiment of the present application provides a computer readable medium storing program code for execution by a terminal, where the program code includes any of the second aspect or the second aspect. An instruction of a communication method in a possible implementation.

In a ninth aspect, an embodiment of the present application provides a communication method. The communication method includes: the communication device determining the identification information of the second cell and the system information of the second cell; the communication device transmitting the identifier information of the second cell and the valid information in the second cell .

In the embodiment of the present application, the communication device sends the valid information of the second cell, so that the terminal determines, according to the valid information, whether the system information of the second cell received by the terminal in the first cell is valid, so that the terminal can use the effective system. The information is monitored, camped on, or accessed to the second cell, thereby improving the success rate of the terminal listening, camping, or accessing the second cell.

In a possible implementation manner, the valid information includes a tag value and/or an effective time.

In a tenth aspect, the present application provides a communication device, the communication device comprising means for performing the communication method in any of the possible implementations of the ninth aspect or the ninth aspect.

In an eleventh aspect, an embodiment of the present application provides a communication device, including a transmitter, a receiver, and a processor, where the processor is configured to execute code, and the transmitter and the receiver are configured to communicate with other devices. When the code is executed, the transmitter and the receiver are specifically configured to implement the communication method in any one of the possible implementations of the ninth aspect or the ninth aspect.

In a twelfth aspect, the embodiment of the present application provides a computer readable medium storing program code for execution by a communication device, the program code comprising the ninth aspect or the ninth aspect An instruction of a communication method in any of the possible implementations.

DRAWINGS

FIG. 1 is a schematic scene diagram of a communication method and a communication device to which an embodiment of the present application is applied.

FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 4 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 5 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 6 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 7 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 9 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.

FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present application.

FIG. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application.

FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

As shown in FIG. 1 , the communication method, the communication device 120, and the terminal 130 may be included in the application method of the communication method and the communication device in the embodiment of the present application. Communication device 110 and communication device 120 can be in communication with terminal 130.

The service range of the communication device 110 may include the first cell 140, and the service range of the communication device 120 may include the second cell 150. Optionally, the second cell and the first cell may have overlapping portions.

Specifically, the terminal may include any one of the following conditions in the first cell: the terminal is in an idle mode in the first cell; the terminal is in an inactive mode or a third in the first cell. The terminal is in an active mode or a radio resource control (RRC) connection mode in the first cell.

Among them, the inactive mode or the third state is just an example. If the terminal is in the inactive mode in a certain cell, the context of the terminal may be stored on the at least one communication device.

The context of the terminal may include an access stratum context (AS context) and/or a non access stratum context (NAS context) of the terminal.

If the terminal is in the first cell, the terminal may send a message to the communication device 110 in the first cell, or may receive the message sent by the communication device 110 in the first cell.

It should be understood that the number of the communication device 110, the communication device 120, the terminal 130, the first cell 140, and the second cell 150 shown in FIG. 1 and the networking manner are only examples, and the embodiments of the present application should not be limited.

It should be understood that the overlapping portion of the second cell and the first cell shown in FIG. 1 is also an example. In this embodiment of the present application, the first cell and the second cell are not limited to overlap, the first cell and the second cell. The cells may also not overlap.

It should be understood that the communication device 110 and the communication device 120 in FIG. 1 may be the same communication device, that is, the service range of one communication device may include both the first cell and the second cell.

The second cell in FIG. 1 may refer to a cell that transmits its system information through other cells, for example, the second cell may be a macro cell, a small cell or a high frequency cell, a secondary cell, a secondary serving cell, etc.; the first cell may send other The cell of the system information of the cell, for example, the first cell may be a macro cell, a serving cell, a primary cell, or a primary serving cell.

The communication device 110 and the communication device 120 may be a base station or other network device, which is not limited in this embodiment of the present application.

It should be understood that the specific type of the base station is not limited in the embodiment of the present application. In systems with different wireless access technologies, the names of devices with base station functions may vary. For convenience of description, in all embodiments of the present application, the foregoing apparatus for providing a wireless communication function to a terminal is collectively referred to as a base station, such as a base station device, a small base station device (Pico), and the like in a future network.

The terminal 130 may be a user equipment (UE). The UE may communicate with one or more core networks via a radio access network (RAN). A UE may be referred to as an access terminal, a terminal device, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The UE may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function. Handheld device, computing device or other device connected to a wireless modem, in-vehicle device, wearable device or Internet of Things, terminal device in a vehicle network, and any form of terminal device in a future network.

A schematic flowchart of a communication method in which the first cell in FIG. 1 transmits system information of a second cell is shown in FIG. 2. It should be understood that FIG. 2 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the operations in FIG. 2. Furthermore, the various steps in FIG. 2 may be performed in a different order as presented in the above embodiments, and it is possible that not all operations in the above-described embodiments are to be performed.

S210. The terminal 130 sends the first information in the first cell, where the first information includes first information, where the first information is used to request system information of the second cell. Accordingly, the communication device 110 receives the first information transmitted by the terminal 130 in the first cell. The first information may be carried in a specific message, such as an RRC message, message 1 (message 1, msg1), message 3 (message 3, msg3), or other messages in a random access procedure.

Optionally, the first information may include cell identity information of the second cell. More specifically, the cell identification information may include at least one of the following: a cell frequency, a physical cell identification (PCI), a global cell identification (GCI), a cell identifier, or a cell index. The second cell is one or more cells different from the first cell.

It can be understood that, if the first information does not include the identifier information of the second cell, the first information may be specifically used to request system information of all or part of the second cell that the first cell supports to send. That is, the terminal 130 may send the first information to the communication device 110, where the first information is used to request system information of the second cell, but the terminal may not explicitly specify the system information of which cell to the communication device. After receiving the first information, the communication device 110 transmits to the terminal 130 system information of all or part of the cells that it supports to transmit.

Optionally, the first information may carry a “request reason” for requesting to obtain system information of the second cell or a sequence number of the system information that may carry the first cell, where system information corresponding to the sequence number in the first cell may be used. Carrying system information of the second cell.

For example, a system information block (SIB) 4 of the first cell may be preset to carry system information of the second cell. Thus, if the first information sent by the terminal 130 can carry the sequence number of the SIB4. After receiving the first information, the communications device 110 may send the system information of the second cell in the first cell by using the SIB4 of the first cell. The terminal 130 receives the SIB4 of the first cell, and acquires system information of the second cell.

S220. The communication device 110 sends system information of the second cell in the first cell according to the first information. Correspondingly, the terminal 130 receives the system information of the second cell in the first cell.

The system information of the second cell sent by the first cell may include a minimum SI (minimum SI) of the second cell and/or other SI (other SI). The minimum SI of the second cell may include information for initial access or cell selection in the second cell, and at least one of cell basic configuration information of the second cell; the other SI of the second cell may include system information Other information than minimum SI.

On the basis of the system information of the second cell that is sent by the first cell, the communication device may further send time indication information, where the time indication information is used to indicate that the terminal monitors the time of the second cell according to the system information of the second cell.

In the embodiment of the present application, the communication device 110 sends the system information of the second cell in the first cell according to the first information, and may include: the communication device 110 sends the second cell by using the other SI of the first cell according to the first information. system message.

The other SI of the first cell may be a component of system information of the first cell. The system information of the first cell may also include a minimum SI of the first cell. The minimum SI of the first cell may include at least one of information for initial access or cell selection in the first cell and cell basic configuration information of the first cell. The other SI of the first cell may include other information than the minimum SI in the system information of the first cell.

It can be understood that the minimum SI and other SI in the embodiment of the present application are only an example, and any information including the above functions belongs to the category of minimum SI and other SI of the embodiment of the present application.

In the embodiment of the present application, the communications device sends the system information of the second cell in the first cell, so that the terminal can obtain the system information of the second cell in advance, thereby shortening the delay of the terminal monitoring, accessing, or camping on the second cell. .

On the other hand, the communication device sends the system information of the second cell in the first cell based on the request of the terminal, can save resources in the second cell, and can send the system of the second cell with less resources in the first cell. information.

In addition, the terminal does not need to read the system information of the second cell from the broadcast message of the first cell or the second cell multiple times or repeatedly, and the power consumption of the terminal can be reduced.

In the embodiment of the present application, optionally, the communication device 110 may further send the system information of the second cell based on the system information of the second cell in the first cell. For example, if the communication device sends the system information of the second cell by the other SI of the first cell, the other SI of the first cell may further carry the valid information of the system information of the second cell.

The valid information of the system information of the second cell may be used to determine whether the system information of the second cell is valid, or whether the system information of the second cell is changed. For example, the valid information of the system information of the second cell may include a value tag, which may be used to characterize the version information or validity of the system information of the second cell; or the cell system information of the second cell The valid information may also include an effective time that may be used to characterize when the system information of the second cell is valid.

In the embodiment of the present application, the communication device 110 may receive the first information sent by at least one terminal. Alternatively, the communication device 110 may select a manner of transmitting system information of the second cell according to the number of terminals transmitting the first information. The manner in which the communication device 110 sends the system information of the second cell may include: a broadcast mode, a multicast mode, a dedicated signaling mode, a radio resource control (RRC) signaling mode, a layer 2 signaling mode, or a medium. Access control (MAC) signaling mode.

In the embodiment of the present application, the communication device selects, according to the number of terminals requesting the system information of the second cell, the manner of sending the system information of the second cell, for example, when the number of terminals is large, the system information of the second cell is sent by using multicast or broadcast mode. Can save communication resources.

If the communication device 110 receives the first information sent by the multiple terminals, the communication device 110 may send the system information of the second cell by means of broadcast; if the communication device 110 receives the first information sent by the less terminal, the communication device 110 The system information of the second cell may be transmitted through radio resource control signaling or media access control (MAC) layer signaling or layer 2 signaling. Wherein, the preset threshold may be used to determine whether the number of terminals that the communication device 110 receives the first information is greater or less.

FIG. 3 is a schematic flowchart of a communication method according to another embodiment of the present application. The same reference numerals in FIG. 3 as those in FIG. 2 denote the same meanings, and are not described herein again for the sake of brevity. The operation different from that in Fig. 2 in Fig. 3 will be described in detail below.

S206. The communication device 110 transmits a cell information set in the first cell. Accordingly, terminal 130 receives the set of cell information in the first cell.

After receiving the cell information set sent by the communication device 110, the terminal 130 may request, from the cell information set, the system information of the second cell that the communication device 110 can transmit in the first cell according to the cell information set. In this way, after the terminal sends the first information to the communication device, the communication device cannot send the system information of the second cell, thereby saving signaling and saving communication resources.

Specifically, the communication device 110 may transmit the cell information set in the first cell through the minimum SI or other SI of the first cell.

The set of cell information may include cell information for one or more cells. The cell information of each cell may include identification information of the corresponding cell.

Specifically, the cell information set may include cell information of the second cell. More specifically, the cell information of the second cell may include identification information of the second cell.

In the cell information set, the cell information of each cell may further include valid information of cell access indication information and/or cell system information of the corresponding cell.

If the cell information includes the information about the identity of the cell, the cell access indication information, and the cell system information, an example of the cell information set is as follows: cell identity 1, access indication information 1 (if allowed to camp and/or Allow access), valid information 1; cell identity 2, access indication information 2 (eg, no-residence and/or forbidden access), valid information 2; cell identity 3, access indication information 3 (if allowed to camp and/or Or allow access), valid information 3.

The cell access indication information may be used to indicate whether the corresponding cell prohibits camping and/or prohibits access.

The valid information of the cell system information may be used by the terminal to determine whether the system information of the corresponding cell is valid, or whether the system information of the corresponding cell is changed. For example, the valid information of the cell system information may include a value tag for marking the validity of the system information or the version information indicating the system information; or the effective information of the cell system information may also include an effective time, the valid time It can be used to characterize the time when the corresponding cell system information is valid.

After receiving the cell information set in the first cell, the terminal 130 may determine one or more cells (ie, the second cell) according to the cell information set. After the terminal 130 determines the second cell, S210 and S220 may be performed.

Specifically, the terminal 130 may determine identification information of one or more cells, that is, identification information of the second cell, according to the cell information set. At this time, the terminal 130 performs S210, that is, when the first information is sent in the first cell, the first information may carry the identifier information of the second cell.

The manner in which the terminal determines the second cell (such as the identity information of the second cell) will be described in detail later, and is not described here.

FIG. 4 is a schematic flowchart of a communication method according to another embodiment of the present application. The same reference numerals in FIG. 4 as those in FIG. 3 denote the same meanings, and are not described herein again for the sake of brevity. The operation in FIG. 4 which is different from that in FIG. 3 will be described in detail below.

S202. The communication device 110 sends indication information in the first cell, where the indication information is used to indicate whether the communication device 110 can send the system information of the cell information set or other cells (such as the second cell). Correspondingly, the terminal 130 receives the indication information in the first cell.

Specifically, the communication device 110 may transmit the indication information in the first cell by the minimum SI or other SI of the first cell.

After receiving the indication information, the terminal 130 may determine, according to the indication information, whether the communication device 110 can send the cell information set or system information of other cells.

If the terminal 130 determines, according to the indication information, that the communication device 110 can send the cell information set or the system information of other cells, then S203 and subsequent steps may be performed.

S204. The terminal 130 sends a cell information request message in the first cell. Accordingly, the communication device 110 receives the cell information request message in the first cell.

In the embodiment of the present application, S206 may specifically include: the communications device 110 sends the cell information set in the first cell according to the cell information request message.

In the embodiment of the present application, the communication device 110 can send the cell information set to the terminal according to the cell information request message sent by the terminal. Therefore, it can also be said that the cell information request message can be used to request the cell information set.

From another perspective, after receiving the cell information set, the terminal 130 may send the first information to the communication device 110 according to the cell information set, and then receive the system information of the second cell sent by the communication device 110. Therefore, it may also be said that the cell The information request message can be used to request system information of the second cell.

If the terminal 130 determines, according to the indication information, that the communication device 110 cannot transmit the cell information set or the system information of other cells, the S204 and subsequent steps may not be performed. In this way, after the terminal sends the cell information request message to the communication device, the communication device cannot send the cell information set, thereby saving signaling and saving communication resources.

Specifically, a certain system information of the first cell may be agreed or pre-defined for carrying the cell information set. If the communication device 110 indicates that the system information of the first cell exists by the indication information, it indicates that the communication device 110 can transmit the cell information set.

Specifically, the SIB3 of the first cell may be preset to carry the cell information set. In this way, if the indication information indicates that the SIB3 of the first cell exists, the first information sent by the terminal 130 may carry the sequence number of the SIB3. The SIB3 carried in the first information may be used to request the communication device 110 to send the SIB3 of the first cell, that is, to request the communication device 110 to send the cell information set.

More specifically, the communication device 110 can carry the indication information by 1 bit. Specifically, if the indication information is “1”, it may indicate that the communication device may send the cell information set in the first cell; if the indication information is “0” or does not exist, it may indicate that the communication device is not in the first cell. Send a collection of cell information.

Optionally, if the communication device 110 indicates that the system information of the second cell can be sent in the first cell by using the indication information, the terminal 130, after receiving the indication information by the first cell, is further included in the first information sent by the first cell. Can carry the reason for the request. For example, the first information may carry the request reason as “request to obtain the system information or the cell information set of the second cell”, and is used to indicate that the network device 110 requests the system information or the cell information set of the second cell, and the network device 110 The corresponding system information carrying the "system information or cell information set of the second cell" is sent to the terminal 130.

FIG. 5 is a schematic flowchart of a communication method according to another embodiment of the present application. The same reference numerals in FIG. 5 as those in FIG. 2 denote the same meanings, and are not described herein again for the sake of brevity. The operation in FIG. 5 which is different from that in FIG. 2 will be described in detail below.

S205. The communication device 110 sends indication information in the first cell, where the indication information is used to indicate whether the communication device 110 can send system information of another cell (ie, the second cell). Accordingly, the terminal 130 receives the indication information in the first cell.

After receiving the indication information, the terminal 130 may determine, according to the indication information, whether the communication device 110 can send system information of the second cell.

If the terminal 130 determines that the communication device 110 can send the system information of the second cell according to the indication information, the terminal may perform S210 and subsequent steps.

If the terminal 130 determines that the communication device 110 cannot transmit the system information of the second cell according to the indication information, the first information for requesting the system information of the second cell may not be sent to the communication device 110. This can prevent the situation that the communication device cannot send the system information of the second cell after the terminal sends the first information to the communication device, thereby saving signaling, thereby saving communication resources.

For example, one system information of the first cell may be agreed or pre-defined for carrying system information of the second cell. If the communication device 110 indicates that the system information of the first cell exists by the indication information, it indicates that the communication device 110 can transmit the system information of the second cell, otherwise, it can indicate that the communication device 110 does not transmit the system information of the second cell.

After the terminal 130 determines that the system information of the first cell exists according to the indication information, the terminal 130 may perform S210, that is, send the first information in the first cell. At this time, the first information may carry the sequence number of the system information of the first cell to request system information corresponding to the sequence number in the first cell. The system information corresponding to the sequence number in the first cell is used to carry system information of the second cell, and the first information is used to request system information of the second cell.

Specifically, the SIB5 of the first cell may be preset to carry system information of the second cell. At this time, if the indication information sent by the communication device 110 to the terminal 130 in S202 indicates that the SIB5 of the first cell exists, the first information sent by the terminal 130 in the first cell may carry the sequence number of the SIB5.

After receiving the first information in the first cell, the communication device 110 may send the SIB5 of the first cell to the terminal according to the first information, and the system information of the second cell is carried in the SIB5.

More specifically, the communication device 110 can carry the indication information by 1 bit. Specifically, if the indication information is “1”, it may indicate that the communication device 110 may send the system information of the second cell in the first cell; if the indication information is “0” or does not exist, the communication device 110 may be The system information of the second cell is not transmitted in the first cell.

In the communication method shown in FIG. 2 to FIG. 5, the terminal 130 may preset a trigger condition for transmitting the first information.

If the terminal 130 presets a trigger condition for transmitting the first information, the terminal 130 may determine whether the trigger condition is satisfied.

If the terminal 130 determines that the trigger condition is satisfied, then S210 and subsequent steps may be performed. If the terminal 130 determines that the trigger condition is not met, then S210 and subsequent steps may not be performed.

That is, the terminal 130 transmits the first information for requesting the system information of the second cell to the communication device 110 when the trigger condition is satisfied. This enables the terminal to acquire system information of the second cell from the first cell as needed, thereby further saving resources of the terminal and the communication device.

The triggering condition may include at least one of the following conditions: the terminal detects the synchronization signal of the second cell; the terminal receives the broadcast message of the second cell, the broadcast message includes the identifier information of the second cell; and the terminal detects the signal in the second cell. The quality is higher than the quality threshold; the terminal detects that the signal quality in the second cell is higher than the quality threshold, and the terminal needs to transmit the uplink data; the terminal receives the indication information used to indicate that the system information of the second cell is updated.

For example, the terminal detects the synchronization signal of the second cell, and obtains the identifier information of the second cell from the synchronization signal, the terminal may send the first information in the first cell, and request the first corresponding to the identifier information. System information of the second cell.

For example, the terminal receives the broadcast message of the second cell, and obtains the identifier information of the second cell from the broadcast message, the terminal may send the first information in the first cell, and request the second information corresponding to the identifier information. System information of the community.

For example, if the terminal detects that the signal quality in the second cell is higher than the quality threshold, the terminal may send the first information in the first cell.

For example, if the terminal detects that the signal quality in the second cell is higher than the quality threshold, and the terminal needs to transmit uplink data, the terminal may send the first information in the first cell.

The quality threshold may be configured by the communication device 110 to the terminal 130 by signaling, or may be preset by the terminal 130.

In the communication method shown in FIG. 3 or FIG. 4, before performing S210, the terminal 130 can determine not only whether the trigger condition is satisfied, but also whether the cell information of the second cell is included in the cell information set, such as the identifier of the second cell. information.

For example, after the terminal moves to the coverage of the second cell, if the terminal 130 determines that the trigger condition is satisfied, and determines that the cell information set includes the identifier information of the second cell, the S210 and the subsequent process may be performed; otherwise, S210 and subsequent processes are not executed.

In the communication method shown in FIG. 3 or FIG. 4, if the cell information of the second cell further includes the cell access indication information of the second cell in the cell information set, the terminal 130 may further determine, according to the cell access indication information, whether Need to execute S210.

For example, if the cell access indication information indicates that the second cell does not allow camping and/or does not allow access, the terminal 130 may determine that the trigger condition is satisfied and/or the identifier information of the second cell is included in the cell information set. Do not send the first message.

Because even if the terminal obtains the system information of the second cell in the first cell, it may not be able to camp and/or access the second cell. That is to say, the terminal acquires the system information of the second cell according to the cell access indication information, which can save the storage resources of the terminal 130, and can also save the communication resources of the communication device 110.

In the foregoing various embodiments of the present application, after the communication device 110 sends the system information of the second cell in the first cell, the system information of the second cell may be changed.

If the system information of the second cell is changed, the communication device of the second cell, such as the communication device 110 in FIG. 1 or the communication device 120 in FIG. 2, may send the communication device to the first cell, for example, to the communication device 110. System information after the second system is changed.

The communication device 110 receives the system information after the second cell change, and can determine that the system information of the second cell is changed.

If the communication device 110 determines that the system information of the second cell is changed, a schematic flowchart of the communication method of another embodiment of the present application is shown in FIG. 6. It should be understood that FIG. 6 shows the steps or operations of the communication method, but the steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variants of the operations in FIG. 6, or may perform more or more. Less operation.

The communication method shown in FIG. 6 may include: S630. The communication device 110 transmits the system information after the second cell change in the first cell. Correspondingly, the terminal 130 receives the system information after the second cell change in the first cell.

Specifically, the communication device 110 may send the system information after the second cell change by the minimum SI or other SI of the first cell.

Specifically, when the communication device 110 transmits the system information after the second cell change in the first cell, the communication device 110 may also transmit the valid information of the system information, that is, the valid information corresponding to the changed system information.

Optionally, the communication method shown in FIG. 6 may further include: S610. The communications device 110 sends the first indication information in the first cell, where the first indication information is used to indicate that the system information of the second cell is changed.

Accordingly, the terminal 130 receives the first indication information in the first cell. At this time, the terminal 130 receiving the system information after the second cell change in the first cell may include: the terminal 130 receiving the system information after the second cell change in the first cell according to the first indication information.

That is to say, the communication device 110 may first send the first indication information in the first cell, so that the terminal 130 can be ready to receive the system information after the second cell change, and then the communication device 110 sends the second cell change. system message. In this way, the terminal that needs the system information of the second cell can receive the changed system information of the second cell under the indication of the first indication information, and other terminals can not receive the system information, thereby saving communication resources of other terminals.

Specifically, the first indication information may carry the identifier information of the second cell.

Specifically, the first indication information may further carry valid information of the system information after the second cell change, such as a tag value and/or a valid time.

Specifically, the first indication information may further carry time information, and is used to indicate a time when the communication device 110 sends the system information after the second cell change in the first cell. The terminal 130 receives the first indication information in the first cell, and receives the system information after the second cell change in the first cell according to the time indicated by the first indication information.

Optionally, the communication method shown in FIG. 6 may further include: S620, the communication device 110 receives the second information in the first cell, where the second information is used to request the system information after the second cell is changed. Correspondingly, the terminal 130 sends the second information according to the first indication information in the first cell. The second information may be carried in a specific message, such as an RRC message, message 1 (message 1, msg1), message 3 (message 3, msg3), or other messages in a random access procedure.

In this case, the S630 may specifically include: in the first cell, the communication device 110 sends the system information after the second cell is changed according to the second information.

That is, the communication device 110 can transmit the system information after the second cell change at the request of the terminal 130. When the terminal does not request the system information of the second cell, the communication device 110 may not transmit the system information after the second cell change, thereby saving communication resources of the communication device 110.

Specifically, the second information may carry the identification information of the second cell.

FIG. 7 is a schematic flowchart of a communication method according to another embodiment of the present application. It should be understood that FIG. 7 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the operations in FIG.

The communication device 120 can transmit the identification information of the second cell in the second cell. Correspondingly, the terminal 130 may receive the identification information of the second cell in the second cell.

If the communication device of the second cell is the same communication device as the communication device of the first cell, the communication device 120 may be the communication device 110.

The communication device 120 may transmit the identification information of the second cell in the synchronization signal or the broadcast message of the second cell.

After receiving the identifier information of the second cell in the second cell, the terminal 130 may carry the identifier information of the second cell in the first information to request the communication device 110 to send the system information of the second cell in the first cell.

As shown in S710 of FIG. 7, the communication device 120 may also send valid information of the system information of the second cell in the second cell (for the convenience of subsequent description, the valid information becomes the second valid information).

The communication device 120 may transmit the valid information of the system information of the second cell in the broadcast message of the second cell.

Correspondingly, the terminal located in the service range of the second cell receives the second valid information in the second cell. For example, after the terminal 130 moves into the range of the second cell, the terminal 130 may receive the second valid information in the second cell.

The second valid information may be used by the terminal 130 to verify whether the system information of the second cell received by the terminal 130 in the first cell is valid. The second valid information may include a tag value and a valid time of the current system information of the second cell.

If the second valid information includes a tag value, the tag value may be version information of current system information of the second cell.

The first valid information received in the first cell and the system information of the second cell may be stored on the terminal 130. The first valid information is valid information corresponding to system information of the second cell that the terminal 130 receives in the first cell.

The specific implementation manner in which the terminal 130 receives the valid information corresponding to the system information of the second cell in the first cell may include: in the communication method shown in FIG. 3 or FIG. 4, the terminal 130 receives the cell information set in the first cell. Receiving the first valid information; or the communication method shown in FIG. 2 to FIG. 5, the terminal 130 receives the first valid information when receiving the system information of the second cell in the first cell.

S720. The terminal 130 determines, according to the second valid information and the first valid information, whether system information of the second cell received by the terminal 130 in the first cell is valid.

If the second valid information and the first valid information both include the tag value, the terminal 130 determines, according to the second valid information and the first valid information, whether the system information of the second cell received by the terminal 130 in the first cell is valid, and may include: The terminal 130 compares the label value in the second valid information with the label value in the first valid information; if the two label values are consistent, it indicates that the system information of the second cell received by the terminal 130 in the first cell is valid. Otherwise, the system information of the second cell received by the terminal 130 in the first cell is invalid.

If the terminal 130 determines that the system information of the second cell received by the terminal 130 in the first cell is valid according to the second valid information and the first valid information, the terminal 130 may perform S730. That is, the terminal 130 listens, camps, or accesses the second cell according to the system information of the second cell.

For example, after the terminal 130 receives the system information of the second cell and the corresponding valid information in the first cell, the system information of the second cell may be changed, and the corresponding valid information may also be changed. In this case, if the terminal 130 receives the valid information of the system information after the second cell change in the second cell, the valid information may be inconsistent with the valid information received by the terminal 130 in the first cell.

If the terminal 130 determines that the system information of the second cell received by the terminal 130 in the first cell is invalid according to the second valid information and the first valid information, the terminal 130 may not perform S730.

If the system information of the second cell includes the time indication information, where the time indication information is used to indicate the time when the terminal monitors the second cell, the terminal 130 may monitor, camp, or access the second cell according to the system information. The second cell is monitored, accessed, or camped at the time indicated by the time indication information.

If the first valid information of the second cell received by the terminal 130 in the first cell includes the effective time of the system information of the second cell received by the terminal 130 in the first cell, the terminal may be based on the time indicated by the effective time. The system information of the second cell monitors, camps on or accesses the second cell.

It should be understood that if the first valid information sent by the communication device 110 in the first cell includes the effective time of the system information of the second cell received by the terminal 130 in the first cell, the communication device 120 may not be in the second cell. The valid information of the current system information of the second cell is sent, because the terminal 130 can determine whether the system information of the second cell received by the terminal 130 in the first cell is valid according to the effective time in the first valid information.

Optionally, the specific implementation manner in which the terminal 130 monitors, camps, or accesses the second cell according to the system information of the second cell may include: the terminal determines that there is uplink data, and the terminal monitors, camps, or connects according to the system information of the second cell. Enter the second cell.

That is to say, the terminal can listen, camp or access the second cell if data needs to be transmitted, thereby avoiding unnecessary monitoring, camping or access, and saving communication resources.

FIG. 8 is a schematic structural diagram of a communication method according to another embodiment of the present application. It should be understood that FIG. 8 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and embodiments of the present application may perform more or less operations, or may perform deformation of each operation in FIG. .

The communication method shown in FIG. 8 may include: S830. The communication device 120 transmits the system information after the second cell change in the second cell. Correspondingly, the terminal 130 receives the system information after the second cell change in the second cell.

The communication device 120 may be the communication device 110 if the communication device serving the first cell and the communication device serving the second cell are the same communication device.

When the communication device 120 transmits the system information after the second cell change, the system may also send the valid information of the system information in the second cell.

Optionally, the communication method shown in FIG. 8 may further include: S810. The communications device 120 sends the second indication information in the second cell, where the second indication information is used to indicate that the system information of the second cell is changed. Correspondingly, the terminal 130 receives the second indication information in the second cell.

At this time, the terminal 130 receiving the system information after the second cell change in the second cell may specifically include: the terminal 130 receiving, in the second cell, the system information after the second cell change according to the second indication information.

That is to say, the communication device 120 may first send the second indication information in the second cell, so that the terminal 130 can be ready to receive the system information after the second cell change; then the communication device 120 sends the second cell after the change. system message. In this way, the terminal that needs the system information of the second cell can receive the changed system information of the second cell under the indication of the second indication information, and other terminals can not receive the system information, thereby saving communication resources of other terminals.

The second indication information may further include the changed system information indication information or the valid information corresponding to the changed system information.

Optionally, the communication method shown in FIG. 8 may further include: S820. The communication device 120 receives third information in the second cell, where the third information is used to request system information after the second cell is changed. Correspondingly, the terminal 130 sends the third information according to the second indication information in the second cell. The third information may be carried in a specific message, such as an RRC message, message 1 (message 1, msg1), message 3 (message 3, msg3), or other messages in a random access procedure.

In this case, the S830 may specifically include: in the second cell, the communication device 120 sends the system information after the second cell is changed according to the third information.

That is, the communication device 120 can transmit the system information after the second cell change at the request of the terminal 130. When the terminal does not request the system information of the second cell, the communication device 120 may not transmit the system information after the second cell change, thereby saving communication resources of the communication device 120.

FIG. 9 is a schematic structural diagram of a communication method according to another embodiment of the present application. It should be understood that FIG. 9 illustrates steps or operations of the communication method, but these steps or operations are merely examples, and embodiments of the present application may perform more or less operations, or may perform deformation of the respective operations in FIG. .

The communication method shown in FIG. 9 may include: S910. The communication device 120 sends the third indication information and the information of the first cell in the second cell.

Correspondingly, the terminal 130 receives the third indication information and the information of the first cell in the second cell. The third indication information is used to indicate that the system information of the second cell is changed.

S920. The terminal 130 monitors, or camps on or accesses the first cell according to the third indication information and the information of the first cell.

S930. The communication device 110 sends the system information after the second cell change in the first cell. Correspondingly, the terminal 130 receives the system information after the second cell change in the first cell.

The third indication information may include the identifier information of the second cell. The third indication information may further carry valid information of the system information after the second cell is changed, such as a tag value and/or a valid time. The information of the first cell may include identification information of the first cell, and/or minimum system information (minimum SI) of the first cell.

The third indication information may further carry time information, and is used to indicate a time when the communication device 110 sends the system information after the second cell change in the first cell.

If the third indication information carries the time information, the receiving, by the terminal 130, the system information after the second cell is changed in the first cell, may include: the terminal 130 sends the communication device 110 in the first cell at the time indicated by the third indication information. System information after the second cell change.

The terminal 130 receives the system information after the second cell change sent by the communication device 110 in the first cell at the time indicated by the third indication information, which can save power consumption of the terminal.

When the communication device 110 transmits the system information after the second cell change, the system can also send the valid information of the system information in the first cell.

Optionally, after the terminal 130 receives the changed system information of the second cell in the first cell, the embodiment of the present application may further include: S940, where the terminal 130 monitors, camps, or accesses according to the changed system information of the second cell. Second cell.

In another embodiment of the present application, the communication device 110 may transmit access priority information of a cell in the cell set in the first cell. The set of cells may comprise a first cell and/or a second cell. The access priority information may be a frequency level or a cell level; the access priority information is used to indicate, when the terminal performs cell access or cell reselection, access or camp on each frequency in the cell set or The priority order of the cells.

After receiving the access priority information, the terminal 130 may store the access priority information.

If the terminal wakes up in an overlapping area of multiple cells, or enters an overlapping area of multiple cells, the terminal may select to access or camp on a frequency in the multiple cells or a cell with a higher cell priority. Alternatively, if the terminal detects that the signal quality of a certain cell meets the requirement, the terminal may choose to access or camp on the cell.

The performing, by the terminal, the cell access or the cell reselection according to the access priority information of the cell set may include: the terminal determining that the second cell has no minimum system information on the terminal; and the terminal reducing the second cell in the access priority information. The access priority is obtained, and the changed access priority information is obtained; the terminal performs cell access or cell reselection according to the changed access priority information.

Specifically, the determining, by the terminal, the minimized system information of the second cell on the terminal may include: determining, by the terminal, that all the minimized system information of the second cell is not on the terminal, or determining that the terminal only partially minimizes the system information on the terminal. .

Specifically, after the terminal selects to access or camp on a certain cell, if the system information of the cell is not received, or the system information parameter of the cell for initial access and/or cell selection function is not received, Or the terminal does not store enough system information parameters for camping and/or initial access in the cell, and may lower the priority of the cell in the access priority information, or consider that the cell prohibits camping and/or prohibiting access. More specifically, the terminal can minimize the priority of the cell in the access priority information.

For example, although some system information of the second cell is stored on the terminal, the system information does not include basic system information for camping on or accessing the second cell, and the terminal is not re-selected to the second cell. Other system information for camping on or accessing the second cell, that is, the terminal cannot camp or access the second cell according to the part of the system information, the terminal may lower the priority of the second cell in the access priority information. Level, or consider that the cell is prohibited from camping and/or barring access.

Optionally, when the terminal reduces the priority of the cell in the access priority information, the terminal may lower the priority of the cell in the access priority information in a certain period of time, and set the access priority in a certain period of time. The priority of the cell in the information is minimized. Or when the terminal considers that the cell prohibits camping and/or prohibits access, the terminal may not reselect the cell within a certain period of time.

Optionally, if the terminal lowers the access priority of a certain cell, or considers that the cell is prohibited from camping and/or prohibiting access, the terminal then receives the initial access and/or cell selection function of the cell. The system information parameter, that is, the terminal may camp or initiate initial access in the cell, the terminal may restore the access priority of the cell in the access priority information, or consider that the cell is allowed to camp and/or allow access. Optionally, if the terminal reduces the access priority of a certain cell within a certain period of time, or considers that the cell is prohibited from camping and/or forbidding access within a certain period of time, if the terminal is within the time period, the terminal Receiving system information parameters of the cell for initial access and/or cell selection functions, such as minimum SI, that is, the terminal may camp or initiate initial access in the cell, and the terminal may restore the access priority information. The access priority of the cell, or the cell is considered to be allowed to camp and/or allow access.

In another embodiment of the present application, the communication device 110 may send the access priority information of the cells in the cell set to other communication devices, so that other communication devices may send the access priority to the terminals in the other communication devices. information. In this way, the terminals move to the cell range in the cell set, and the cell access or cell reselection can be performed according to the access priority information.

In another embodiment of the present application, the communication device 110 may receive the access priority information of the cell set included by the other communication device sent by the other communication device, and then send the access priority information to the terminal in the first cell. In this way, the terminal moves to the cell range in the cell set, and can perform cell access or cell reselection according to the access priority information.

In another embodiment of the present application, when the terminal camps on the second cell, the terminal may periodically detect the neighboring cell, if the terminal detects that the signal quality of the first cell is higher than a certain threshold, regardless of whether the terminal resides in the second Whether the signal quality of the cell is lower than the quality threshold of the cell reselection, the terminal reselects to the first cell.

In another embodiment of the present application, the communication device 110 may send the system information of the second cell to the terminal 130 in the first cell according to the location, service, capability, and the like of the terminal 130. That is to say, the communication device may send the system information of the second cell to the terminal in the first cell according to other information of the terminal, instead of the request of the terminal. This communication method can also prevent the communication device 110 from using excessive resources to transmit system information of the second cell that is not necessary to be transmitted, thereby saving communication resources.

The communication method of the embodiment of the present application is described above with reference to FIG. 2 to FIG. 9. The communication device and the terminal for implementing the communication method shown in FIG. 2 to FIG. 9 are described below with reference to FIG. 10 to FIG.

FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application. It should be understood that the communication device 1000 illustrated in FIG. 10 is merely an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar in function to the respective modules in FIG. 10.

The receiver 1010 is configured to receive first information that is sent by the terminal in the first cell, where the first information is used to request system information of the second cell.

The transmitter 1020 is configured to send, according to the first information, system information of the second cell to the terminal in the first cell.

The communication device in the embodiment of the present application may send the system information of the second cell in the first cell based on the request of the terminal, may save resources in the second cell, and may send the second cell in the first cell with less resources. The system information may also enable the terminal to acquire system information of the second cell in advance. The terminal acquires the system information of the second cell in advance, which can shorten the delay of the terminal monitoring, accessing, or camping on the second cell.

Optionally, the first information may include the identifier information of the second cell; the identifier information may include at least one of the following information: a cell frequency, a physical cell identifier, a global cell identifier, a cell identifier, and a cell index.

Optionally, before the receiver receives the first information sent by the terminal in the first cell, the transmitter may be further configured to send cell information of the second cell in the first cell, where the cell The information includes the identification information.

Optionally, the cell information may further include at least one of the following information: cell access indication information, and valid information of the cell system information.

Optionally, the transmitter is specifically configured to send, according to the first information, system information of the second cell by using other system information except the minimization system information in the system information of the first cell.

Optionally, the transmitter is specifically configured to send, according to the first information, system information of the second cell by broadcasting in the first cell or by using radio network control signaling.

Optionally, the communications device may further include a processor 1030, configured to determine that the system information of the second cell is changed. The transmitter may be further configured to send the system information after the second cell change in the first cell.

Optionally, the receiver may be further configured to receive second information that is sent by the terminal in the first cell, where the second information is used to request system information after the second cell is changed; The transmitter may be further configured to send the system information after the second cell change in the first cell according to the second information.

Optionally, the sender is further configured to send the first indication information in the first cell, where the first indication information is used to indicate that the system information of the second cell is changed.

Optionally, the transmitter may be further configured to send access priority information of a cell set in the first cell, where the cell set includes the first cell and/or the second cell.

Optionally, the transmitter may be further configured to send access priority information of a cell set to the other communication device, where the cell set includes the first cell and/or the second cell.

In the communication device of the embodiment of the present application, a memory may also be included. This memory can be integrated in the processor 1030. This memory can be used to store the program code and data of the terminal. It will be appreciated that FIG. 10 only shows a simplified design of the communication device 1000. In a practical application, the communication device 1000 can include any number of transmitters, processors, memories, etc., and all the final communication devices that can implement the embodiments of the present application are within the scope of the present application.

It should be understood that the foregoing and other operations and/or functions of the respective units/modules in the communication device of the embodiment of the present application shown in FIG. 10 are respectively implemented in order to implement the corresponding processes of any of the communication methods in FIG. 2 to FIG. I will not repeat them here.

FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present application. It should be understood that the terminal 1100 illustrated in FIG. 11 is only an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar in function to the respective modules in FIG. 11.

The transmitter 1110 is configured to send first information in the first cell, where the first information is used to request system information of the second cell.

The receiver 1120 is configured to receive system information of the second cell in the first cell.

The terminal in the embodiment of the present application sends a request message requesting the system information of the second cell to the communication device in the first cell, so that the communication device can send the system information of the second cell in the first cell based on the request of the terminal, which can save The resource in the second cell may send the system information of the second cell by using less resources in the first cell, and may also enable the terminal to acquire system information of the second cell in advance. The terminal acquires the system information of the second cell in advance, which can shorten the delay of the terminal monitoring, accessing, or camping on the second cell.

Optionally, before the sending, by the transmitter, the first information, the receiver may be further configured to receive cell information of the second cell in the first cell, where the cell information may include The identification information.

Optionally, the transmitter is specifically configured to: determine that a trigger condition is met, where the trigger condition is used to trigger the terminal to send the first information; and send the first information in the first cell.

Optionally, the triggering condition may include at least one condition that: the terminal detects a synchronization signal of the second cell; the terminal receives a broadcast message of the second cell, where the broadcast message includes Determining the identification information; the terminal determines that the signal quality in the second cell is higher than a quality threshold; and the terminal receives the indication information used to indicate that the system information of the second cell is changed.

Optionally, the receiver may be further configured to receive the system information after the second cell change in the first cell.

Optionally, the transmitter may be further configured to send the second information in the first cell, where the second information is used to request system information after the second cell is changed.

Optionally, the receiver is further configured to receive first indication information in the first cell, where the first indication information is used to indicate that system information of the second cell is changed.

Optionally, the terminal may further include a processing module, configured to camp or access the second cell according to system information of the second cell.

Optionally, the receiver may be further configured to receive valid information of system information of the second cell in the second cell. The terminal may further include a processor 1130, where the processing module may be configured to: determine, according to valid information of system information of the second cell, that system information of the second cell is valid; according to the second cell System information resides or accesses the second cell.

Optionally, the receiver may be further configured to receive the changed system information of the second cell in the second cell.

Optionally, the transmitter may be further configured to send, in the second cell, third information, where the third information is used to request system information after the second cell is changed.

Optionally, the receiver is further configured to receive the second indication information in the second cell, where the second indication information is used to indicate that the system information of the second cell is changed.

Optionally, the receiver may be further configured to receive third indication information and information about the first cell in the second cell, where the third indication information is used to indicate system information of the second cell. A change has occurred. The processing module may be further configured to monitor or camp on the first cell according to the third indication information and the information of the first cell. The receiver may be further configured to receive system information after the second cell change in the first cell.

Optionally, the third indication information is further used to indicate a time when the communications device sends the system information after the second cell change in the first cell. The receiver may be specifically configured to receive the system information after the second cell change in the first cell at a time indicated by the third indication information.

Optionally, the receiver may be further configured to receive access priority information of a cell set in the first cell, where the cell set includes the first cell and/or the second cell; The transmitter is further configured to perform cell access or cell reselection according to the access priority information of the cell set.

Optionally, the transmitter may be specifically configured to: determine that the basic system information of the second cell is not available on the terminal, and reduce an access priority of the second cell in the access priority information, where Obtaining the changed access priority information; performing cell access or cell reselection according to the changed access priority information.

The terminal in the embodiment of the present application may further include a memory. This memory can be integrated in the processor 1130. This memory can be used to store the program code and data of the terminal. It will be appreciated that FIG. 11 only shows a simplified design of the terminal 1100. In a practical application, the terminal 1100 can include any number of transmitters, processors, memories, etc., and all terminals that can implement the embodiments of the present application are within the protection scope of the present application.

It should be understood that the above-mentioned and other operations and/or functions of the respective units in the terminal of the embodiment of the present application shown in FIG. 11 are respectively implemented in order to implement the corresponding processes of any of the communication methods in FIG. 2 to FIG. Let me repeat.

Another exemplary structure of the communication device in the embodiment of the present application is as shown in FIG. It should be understood that the communication device 1200 illustrated in FIG. 12 is merely an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar in function to the respective modules in FIG.

The receiving module 1210 can be used to implement the functions implemented by the receiver 1010 of FIG. The transmitting module 1220 can be used to implement the functions implemented by the transmitter 1020 in FIG. Processing module 1230 can be used to implement the functions implemented by processor 1030 in FIG.

Another exemplary structure of the terminal in the embodiment of the present application is as shown in FIG. It should be understood that the terminal 1300 shown in FIG. 13 is only an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar in function to the respective modules in FIG.

The transmitting module 1310 is configured to implement the functions implemented by the transmitter 1110 in FIG. The receiving module 1320 is configured to implement the functions implemented by the receiver 1120 in FIG. The processing module 1330 is configured to implement the functions implemented by the processor 1130 in FIG.

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 electronic hardware or a combination of 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 to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. 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 mutual 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 in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. 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 application 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 may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or communication device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. 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 code. .

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

Claims

A communication method, comprising:

The communication device receives the first information sent by the terminal in the first cell, where the first information is used to request system information of the second cell;

The communication device sends system information of the second cell to the terminal in the first cell according to the first information, where the first cell and the second cell are different cells.
The communication method according to claim 1, wherein the first information comprises identification information of the second cell;

The identifier information includes at least one of the following information: a cell frequency, a physical cell identifier, a global cell identifier, a cell identifier, and a cell index.
The communication method according to claim 2, wherein the communication method further comprises: before the communication device receives the first information sent by the terminal in the first cell, the communication method further comprises:

The communication device sends cell information of the second cell in the first cell, where the cell information includes the identifier information.
The communication method according to claim 3, wherein the cell information further comprises at least one of the following information: cell access indication information, and valid information of the cell system information.
The communication method according to any one of claims 1 to 4, wherein the communication device transmits the system of the second cell to the terminal in the first cell according to the first information. Information, including:

And the communication device sends, according to the first information, system information of the second cell by using other system information except the minimum system information in the system information of the first cell.
The communication method according to any one of claims 1 to 5, wherein the communication device transmits the system of the second cell to the terminal in the first cell according to the first information. Information, including:

The communication device broadcasts or transmits system information of the second cell in the first cell or through radio network control signaling.
A communication method, comprising:

The terminal sends the first information in the first cell, where the first information is used to request system information of the second cell;

The terminal receives system information of the second cell in the first cell.
The communication method according to claim 7, wherein the first information comprises identification information of the second cell;

The identifier information includes at least one of the following information: a cell frequency, a physical cell identifier, a global cell identifier, a cell identifier, and a cell index.
The communication method according to claim 8, wherein before the transmitting the first information in the first cell, the communication method further includes:

The terminal receives cell information of the second cell in the first cell, where the cell information includes the identifier information.
The communication method according to claim 9, wherein the cell information further comprises at least one of the following information: cell access indication information, and valid information of the cell system information.
The communication method according to claim 10, wherein the valid information of the cell system information comprises a tag value and/or a valid time of the cell system information.
The communication method according to any one of claims 7 to 11, wherein the transmitting, by the terminal, the first information in the first cell comprises:

When the terminal meets the trigger condition, the first information is sent in the first cell.
The communication method according to claim 12, wherein the triggering condition comprises at least one of the following conditions: the terminal detects a synchronization signal of the second cell; and the terminal receives the second cell a broadcast message, the broadcast message includes the identifier information; the terminal determines that a signal quality in the second cell is higher than a quality threshold; and the terminal receives a function information indicating that the second cell is changed. Instructions.
The communication method according to any one of claims 7 to 13, wherein the communication method further comprises:

The terminal receives the changed system information of the second cell in the first cell.
The communication method according to claim 14, wherein the communication method further comprises: before the terminal receives the changed system information of the second cell in the first cell, the communication method further includes:

The terminal receives the first indication information in the first cell, where the first indication information is used to indicate that the system information of the second cell is changed;

The terminal sends the second information according to the first indication information in the first cell, where the second information is used to request system information after the second cell is changed.
The communication method according to any one of claims 7 to 15, wherein the communication method further comprises:

The terminal camps or accesses the second cell according to system information of the second cell.
The communication method according to claim 16, wherein the communication method further comprises:

Receiving, by the terminal, valid information of system information of the second cell in the second cell;

The terminal camps on or accesses the second cell according to the system information of the second cell, and includes:

Determining, by the terminal, that system information of the second cell is valid according to valid information of system information of the second cell;

The terminal camps or accesses the second cell according to system information of the second cell.
The communication method according to claim 16 or 17, wherein the communication method further comprises:

The terminal receives the third indication information and the information of the first cell in the second cell, where the third indication information is used to indicate that the system information of the second cell is changed;

The terminal monitors or accesses the first cell according to the third indication information and the information of the first cell;

The terminal receives the changed system information of the second cell in the first cell.
The communication method according to claim 18, wherein the third indication information is further used to indicate a time when the communication device sends the system information after the second cell change in the first cell;

The receiving, by the terminal, the system information after the second cell is changed in the first cell, including:

The terminal receives the system information after the second cell change in the first cell at the time indicated by the third indication information.
A communication method according to any one of claims 7 to 19, characterized in that

Determining, by the terminal, that the minimum system information of the second cell does not exist on the terminal;

The terminal reduces the access priority of the second cell in the access priority information, and obtains the changed access priority information;

The terminal performs cell access or cell reselection according to the changed access priority information.
A communication method, comprising:

The communication device determines the identification information of the second cell and the valid information of the system information of the second cell;

The communication device sends the identification information of the second cell and the valid information in the second cell.
A communication device for implementing the communication method according to any one of claims 1 to 6 and 21.
A terminal, characterized in that it is used to implement the communication method according to any one of claims 7 to 20.
A computer readable storage medium storing program code for execution by a communication device, the program code comprising for performing any one of claims 1 to 6 and 21 The instructions of the communication method described.
A computer readable storage medium storing program code for execution by a terminal, the program code comprising the communication of any one of claims 7 to 20 Method of instruction.