WO2017185956A1

WO2017185956A1 - System message updating processing method and apparatus, and computer storage medium

Info

Publication number: WO2017185956A1
Application number: PCT/CN2017/079502
Authority: WO
Inventors: 艾建勋
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-26
Filing date: 2017-04-05
Publication date: 2017-11-02
Also published as: CN107318163A

Abstract

Disclosed in the present invention are a system message updating processing method and apparatus, and a computer storage medium. The method comprises: a base station sends a system message updating instruction A to a terminal UE within a preset time length L before system message updating, the system message updating instruction A being used for instructing the UE to start to receive an updated system message on a preset time point T; or the base station sends a system message updating instruction B to the UE within a time range lasting a preset time length L starting from a system message modification period in which the system message starts to be updated, the system message updating instruction B being used for instructing the UE to immediately start to receive the updated system message.

Description

System message update processing method and device, computer storage medium

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Apr. 26, 2016, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications, and in particular to a system message update processing method and apparatus, and a computer storage medium.

Background technique

Machine to Machine (M2M) communication is an important subject of the fifth generation of mobile communication technology (5th Generation, 5G), and an important application field for wireless communication in the future. In the M2M project, for the characteristics of low-cost low-throughput type terminals, the 3rd Generation Partnership Project (3GPP) proposed the research of the NarowBand Internet of Things (NB-IoT) system. Sub-project, the goal is to build a system similar to Long Term Evolution (LTE) in the 200 kHz band to provide low-throughput wireless communication services for low-cost terminals.

The system information (SI) is a common message of the cell, and is used to indicate the system parameters of the cell. The user equipment (User Equipment, UE for short) stays in the cell and must keep the latest system information consistent; the system information is usually The bearer is transmitted on the broadcast channel of the cell. In LTE and NB-IoT systems, system information is divided into a Master Information Block (MIB) and a System Information Block (System Information Block). Referred to as SIB two categories, SIB is subdivided into system information blocks with different numbers such as SIB1, SIB2 and SIB3. System information blocks other than SIB1 form one or more SIs. SIB1 carries scheduling information of the composed SI, and the scheduling information is used to indicate the number of the system information block included in each SI, the transmission period, and the time window in which the UE receives these SIs.

1 is a schematic diagram of system information update according to LTE in the related art. As shown in FIG. 1, system information is updated according to a mechanism of a BCCH modification period (hereinafter referred to as a modification period) of a broadcast common control channel, in which system information is used. When the change needs to be made, the base station first carries the UE system information update indication by using a paging message in the first modification period; then, in the second modification period (the second modification period is the first modification period) The post-modification period starts to send the updated system information, and the UE that receives the paging message carrying the update indication receives the updated system information in the second modification period. In addition to the need for rapidly changing system information, other system information remains unchanged during the second modification cycle.

In the NB-IoT technology, a system message update method for configuring enhanced discontinuous transmission (eDRX) is proposed, and FIG. 2 is a schematic diagram of a system message update indication method according to the existing NB-IoT technology, as shown in FIG. 2. In this method, for the eDRX cycle and the system message modification period, the size relationship is different, and different notification methods of system message update are adopted. Specifically, for the UE whose eDRX period is smaller than the system message update period, the downlink control information (Downlink Control Information, DCI for short) of the physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) that the base station scrambles through the paging message or the P-RNTI In the system message update period before the system message update, the systemInfoModification is indicated, that is, the value of the cell systemInfoModification carried in the above message is set to 1, because the eDRX period of such a UE is smaller than the update period of the system message, therefore, this The class UE can receive the paging message or PDCCH DCI in a system message update period before the system message is updated, and the UE then receives the updated system message in the system message update period in which the system message starts to be updated.

For a UE with an eDRX period greater than the system message update period, the system message may not be available. The paging message carrying the systemInfoModification indication or the PDCCH DCI is received in a system message modification period before the update. Therefore, the base station sends a paging message or a PDCCH DCI in a longer time range to ensure that even if the maximum eDRX period is configured. The UE can also receive a system message update indication. Specifically, the base station carries the systemInfoModification-eDRX cell through the paging or PDCCH DCI, and receives the result of the modulo operation of the maximum eDRX period value of the UE indicated by the systemInfoModification-eDRX in the system frame number (HSFN). The HSFN starting with 0 starts to update the system message, where one HSFN contains 1024 system frames, ie 1 HSFN = 1024 System Frame Numbers (SFN). The base station, in order to ensure that the UE configured with the maximum eDRX period can receive the systemInfoModification-eDRX indication, the base station indicates the systemInfoModification by using the paging message or the PDCCH DCI in the time range of the maximum eDRX period before the system message is updated. eDRX.

In the existing NB-IoT specification, the maximum eDRX period value is 1024 HSFNs. Therefore, in the prior art, in order to ensure that all UEs receive a system message update indication (including systemInfoModification or systemInfoModification-eDRX) before updating the system message, the base station needs to first transmit the first SF HSFN time range before the system message is updated. The system message update indication is described before the system message can be truly updated. This brings about a delay in system message updates. In NB-IoT, this delay is equal to the length of time of 1024 HSFNs, which is about 2.91 hours.

In order to solve the problem that the system message update delay is long in order to ensure that all UEs receive the system message update indication before updating the system message in the related art, an effective solution has not been proposed.

Summary of the invention

Embodiments of the present invention provide a system message update processing method and apparatus, and a computer storage medium, to at least solve the related art in order to ensure that all UEs receive before updating a system message. The system message update indicates that the system message update delay is relatively long.

According to an aspect of the embodiments of the present invention, a system message update processing method is provided, including:

The base station sends a system message update indication A to the UE within a predetermined time length L before the system message is updated, wherein the system message update indication A is used to instruct the UE to start receiving the updated system message at a pre-agreed time point T; ,

The base station sends a system message update indication B to the UE for the duration of the predetermined time length L from the beginning of the system message modification period in which the system message is updated, wherein the system message update indication B is used to indicate the UE immediately Start receiving updated system messages; or,

The base station sends a system message update indication C to the UE in a system message modification period before the system message update, where the system message update indication C is used to indicate that the UE receives the updated system message in the next system message modification period. .

In the embodiment of the present invention, the predetermined time length L is a protocol agreement, or a time length value indicated by the base station by the system broadcast message.

In the embodiment of the present invention, the predetermined time length L is a maximum value of the discontinuous transmission period.

In the embodiment of the present invention, the pre-agreed time point T is an SFN or an HSFN of the agreed value M, wherein the agreed value M is a result of a modulo operation on the predetermined time length L.

In the embodiment of the present invention, the method further includes: the base station sending the updated system message on the wireless interface according to the rule of the system message scheduling, and applying the updated system message.

In the embodiment of the present invention, the method further includes: the base station sending the system message update indication C to the UE in a system message modification period of a system message modification period in which the system message starts to be updated, where the system message is updated. The indication C is used to instruct the UE to receive an updated system message at the next system message modification period.

In the embodiment of the present invention, the system message update indications A, B, and C are independent cells, and are carried by a paging message or a DCI carried by the PDCCH, or the system message is updated. Indicates that A, B, and C are different values of one cell, or the system update indicates that A, B, and C are combinations of two cell values.

According to another aspect of the embodiments of the present invention, a system message update processing method is provided, including:

Receiving, by the UE, a system message update indication A sent by the base station to the UE within a predetermined time length L before the system message is updated, according to the system message update indication A, starting to receive the updated system message at a pre-agreed time point T; or

Receiving, by the UE, a system message modification period that is started by the base station from the system message, in a time range that lasts for a predetermined length of time L, the sent system message update indication B, according to the system message update indication B, immediately starts receiving the updated system message; or,

The UE receives the system message update indication C sent by the base station in a system message modification period before the system message update, and receives the updated system message in the next system message modification period according to the system message update indication C.

According to another aspect of the present invention, a system message update processing apparatus is further provided, which is applied to a base station, and includes:

The first sending module is configured to send a system message update indication A to the terminal UE within a predetermined time length L before the system message is updated, where the system message update indication A is used to indicate that the UE starts at a predetermined time point T Receive updated system messages; or,

a second sending module, configured to start a system message modification period that is updated from a system message, and send a system message update indication B to the UE within a time range that lasts for a predetermined length of time L, wherein the system message update indication B is used Instructing the UE to immediately begin receiving updated system messages; or,

The third sending module is configured to send a system message update indication C to the UE in a system message modification period before the system message is updated, where the system message update indication C is used to indicate that the UE is in the next system message modification period. Receive updated system messages.

According to still another aspect of the present invention, a system message update processing apparatus is further provided, which is applied to a terminal, and includes:

The first receiving module is configured to receive a system message update indication A sent by the base station to the terminal UE within a predetermined time length L before the system message is updated, and start receiving the updated system according to the system message update indication A at a predetermined time point T. Message; or,

And a second receiving module, configured to receive a system message update period that is started by the base station starting from the system message, and send a system message update indication B within a time range that lasts for a predetermined length of time L, and start to start immediately according to the system message update indication B. Receive updated system messages; or,

The third receiving module is configured to receive, by the base station, a system message update indication C sent in a system message modification period before the system message is updated, and receive the updated system message in the next system message modification period according to the system message update indication C. .

According to still another aspect of an embodiment of the present invention, a computer storage medium storing a computer program configured to execute the neighboring system message update processing method is further provided.

With the technical solution of the embodiment of the present invention, the base station sends a system message update indication A to the UE within a predetermined time length L before the system message is updated, where the system message update indication A is used to indicate that the UE is at a predetermined time. Point T begins to receive the updated system message; or, the base station starts from the system message modification period that the system message starts to update, and sends a system message update indication B to the UE within a time range that lasts for a predetermined length of time L, wherein the system message The update indication B is used to indicate that the UE immediately starts to receive the updated system message; or the base station sends a system message update indication C to the UE in a system message modification period before the system message is updated, where the system message update indication The C is used to indicate that the UE receives the updated system message in the next system message modification period, and solves the problem that the system message update delay is long in order to ensure that all UEs receive the system message update indication before updating the system message in the related art. , effectively reducing system message update delay and ensuring correct UE Receiving system Unified news.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of system information update according to LTE in the related art;

2 is a schematic diagram of a system message update indication method according to an existing NB-IoT technology;

3 is a flowchart of a system message update processing method according to an embodiment of the present invention;

4 is a first schematic diagram of a system update method according to an embodiment of the present invention;

FIG. 5 is a second schematic diagram of a system update method according to an embodiment of the present invention; FIG.

FIG. 6 is a first schematic structural diagram of a system message update processing apparatus according to an embodiment of the present invention; FIG.

FIG. 7 is a second schematic structural diagram of a system message update processing apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

An embodiment of the present invention provides a system message update processing method, including: according to an aspect of the present invention, a system message update processing method, including:

The base station sends a system message update indication A to the UE within a predetermined time length L before the system message is updated, wherein the system message update indication A is used to indicate that the UE starts to receive the updated system message at the pre-agreed time point T; or

The base station sends a system message update indication B to the UE in the time range of the predetermined time length L from the beginning of the system message modification period that is updated by the system message, where the system sends the system message update indication B. The information update indication B is used to indicate that the UE immediately starts to receive the updated system message; or,

The base station sends a system message update indication C to the UE in a system message modification period before the system message is updated, wherein the system message update indication C is used to indicate that the UE receives the updated system message in the next system message modification period.

In the embodiment of the present invention, the pre-agreed time point T is the SFN or HSFN of the agreed value M, wherein the agreed value M is the result of the modulo operation on the predetermined time length L.

In the embodiment of the present invention, the method further includes: the base station sending the system message update indication C to the UE in a system message modification period of the system message modification period in which the system message starts to be updated, where the system message update indication C is used. The UE is instructed to receive an updated system message at the beginning of the next system message modification period.

In the embodiment of the present invention, the system message update indications A, B, and C are independent cells, and are carried by a paging message or a DCI carried by the PDCCH, or the system message update indicates that A, B, and C are one cell. Different values, or the system update indications A, B, and C are combinations of two cell values.

The embodiment of the present invention further provides a system message update processing method, and FIG. 3 is a flowchart of a system message update processing method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:

Step S3021, the UE receives a system message update indication A sent by the base station to the UE within a predetermined time length L before the system message is updated;

Step S3022, according to the system message update indication A, starting to receive the updated system message at a pre-agreed time point T; or

Step S3031: The UE receives a system message modification period that is updated by the base station from the system message, and is in a time range that lasts for a predetermined length of time L;

Step S3032, the sent system message update indication B, according to the system message update indication B, immediately starts to receive the updated system message; or

Step S3041, the UE receives a system message update indication C sent by the base station in a system message modification period before the system message is updated;

Step S3042, according to the system message update indication C, receives the updated system message in the next system message modification period.

The embodiment of the present invention provides a system message update processing apparatus, which is applied to a base station. FIG. 6 is a schematic structural diagram of a system message update processing apparatus according to an embodiment of the present invention.

The first sending module 61 is configured to send a system message update indication A to the terminal UE within a predetermined time length L before the system message is updated, where the system message update indication A is used to indicate that the UE starts receiving at a predetermined time point T. Updated system message; or,

The second sending module 62 is configured to start, according to a system message modification period that the system message starts to update, send a system message update indication B to the UE within a time range that lasts for a predetermined length of time L, where the system message update indication B is used. Instructing the UE to immediately begin receiving updated system messages; or,

The third sending module 63 is configured to send a system message update indication C to the UE in a system message modification period before the system message is updated, where the system message update indication C is used to indicate that the UE is in the next system message modification period. Receive updated system messages.

In the embodiment of the present invention, the pre-agreed time point T is an SFN of the agreed value M or HSFN, wherein the agreed value M is the result of a modulo operation on the predetermined length of time L.

In the embodiment of the present invention, the method further includes:

The base station sends an updated system message on the wireless interface according to the rules of the system message scheduling, and applies the updated system message.

In the embodiment of the present invention, the method further includes:

The base station sends the system message update indication C to the UE in a system message modification period of the system message modification period in which the system message starts to be updated, where the system message update indication C is used to indicate that the UE is in the next system message. The modification cycle begins to receive updated system messages.

In the embodiment of the present invention, the system message update indications A, B, and C are independent cells, and are carried by a paging message or a DCI carried by the PDCCH, or the system message update indications A, B, and C are one. Different values of the cells, or the system update indications A, B, and C are combinations of two cell values.

The embodiment of the present invention further provides a system message update processing device, which is applied to a terminal. FIG. 7 is a schematic structural diagram of a system message update processing device according to an embodiment of the present invention. As shown in FIG. 7, the method includes:

The first receiving module 71 is configured to receive a system message update indication A sent by the base station to the terminal UE within a predetermined time length L before the system message is updated, according to the system message update indication A, starting to receive the update at a predetermined time point T. System message; or,

The second receiving module 72 is configured to receive, according to a system message modification period that the base station starts to update from the system message, in a time range that lasts for a predetermined length of time L, the sent system message update indication B, according to the system message update indication B immediately Start receiving updated system messages; or,

The third receiving module 73 is configured to receive, by the base station, a system message update indication C sent in a system message modification period before the system message is updated, according to the system message update indication C. The updated system message is received during the next system message modification cycle.

In practical applications, the functions implemented by each unit in the system message update processing apparatus may be implemented by a central processing unit (CPU) or a microprocessor (Micro Processor Unit) located in the neighboring area optimization apparatus. MPU), or a digital signal processor (DSP), or a Field Programmable Gate Array (FPGA).

Embodiments of the Invention The above system message update processing apparatus may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to execute a system message update processing method according to an embodiment of the present invention.

The embodiments of the present invention are further described below in conjunction with specific embodiments.

The embodiment of the present invention provides two different system message update manners according to the content of the system message that needs to be updated.

System message update method 1:

The base station sends a system message update indication A for a period of time before the system message is updated, and the UE that receives the system message update indication A starts accepting the updated system message at the appointed time point T.

The period before the system message is updated, the length L is a protocol agreement, or the base station A length of time value indicated by the system broadcast message. Preferably, the length of time is the maximum value of the eDRX cycle.

The agreed time point T refers to the SFN or HSFN of the agreed value M as a result of the modulo operation of the above-mentioned time length L. Preferably, the agreed value M is taken as 0. That is, the UE starts to update the system message in a system frame or a super system frame that satisfies the following formula: SFN mod L=M, or HSFN mod L=M.

The base station starts at the system frame or the super system frame that satisfies the above formula, and sends an updated system message on the wireless interface according to the rules of the system message scheduling, and applies the updated system message.

The above system message update mode is applicable to system message content that requires all UEs to receive updated system messages before being applied in the cell, including paging cycle (Paging Cycle), paging subframe configuration (such as nB value), Or the configuration of a valid downlink subframe (such as valid downlink subframe).

FIG. 4 is a first schematic diagram of a system update method according to an embodiment of the present invention. As shown in FIG. 4, where L is 1024 HSFNs, that is, the maximum period of eDRX is 1024 HSFN lengths, and the base station is from HSFN=0 to HSFN= In the range of 1023, according to the sending rule of the paging message, the system message update indication A is continuously carried through the paging message. And start and send the updated system message at the next HSFN=0 (ie 1024). The UE receiving the system message update indication A starts with the next HSFN mod 1024=0 super system frame and receives the updated system message.

System message update method 2:

The base station starts from the system message modification period that the system message starts to update, and sends a system message indication B within the time range of the duration length L. The UE receiving the system message update indication B immediately begins accepting the updated system message.

The length of time L described above is a protocol convention, or a length of time value indicated by a system broadcast message. Preferably, the length of time is the maximum value of the eDRX cycle.

Optionally, the base station sends a system message update indication C in a system message modification period before the system message update, and the UE that receives the system message update indication C receives the updated system message in the next system message modification period.

The base station may begin transmitting an update indication C of the system message at any system message modification period and begin transmitting and applying the updated system message at a subsequent system message modification period.

The system message update mode is applicable to the system message content that does not affect the UE receiving the paging message, or the system message content that does not satisfy the scope of the system message update mode.

FIG. 5 is a second schematic diagram of a system update method according to an embodiment of the present invention. As shown in FIG. 5, a base station starts a system message modification period in which a system message starts to update, and lasts for a length of time L, where L is a maximum period of eDRX, through paging The message or PDCCH DCI, and indicates the system message update indication B according to the sending rule of the paging message. The UE receiving this system message update indication B immediately begins receiving the updated system message.

Optionally, the base station indicates, in a system message modification before the system message modification period in which the system message starts to update, the system message update indication C, and the UE that receives the system message update indication starts to receive the updated system message in the next system message modification period. .

The method for updating the system message indications A, B, and C includes the following method: the system message update indications A, B, and C are independent cells, respectively, and are carried by a paging message or a PDCCH DCI.

The above system message update indicates that A, B, and C are different values of one cell. For example, the cell is a 2-bit length, and its value 1 represents a system update indication A, and its value 2 is a system update indication B, and its value 3 represents a system update indication C, and its value 0 represents no update. .

The system message update indication A, B, and C may also be a combined result of the values of the two cells. For example, in the prior art, the paging or PDCCH DCI carries the cell systemInfoModification= 1, systemInfoModification-eDRX = 0, on behalf of the system message update indication C, systemInfoModification = 0, systemInfoModification - eDRX = 1, on behalf of the system message update indication A, systemInfoModification = 1, systemInfoModification - eDRX = 1, on behalf of the system update indication B , systemInfoModification=0, systemInfoModification-eDRX=0, it means there is no update.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A system message update processing method includes:

The base station sends a system message update indication A to the terminal UE within a predetermined time length L before the system message is updated, wherein the system message update indication A is used to instruct the UE to start receiving the updated system message at a pre-agreed time point T; or,

The base station sends a system message update indication B to the UE for the duration of the predetermined time length L from the beginning of the system message modification period in which the system message is updated, wherein the system message update indication B is used to indicate the UE immediately Start receiving updated system messages; or,

The base station sends a system message update indication C to the UE in a system message modification period before the system message update, where the system message update indication C is used to indicate that the UE receives the updated system message in the next system message modification period. .
The method of claim 1 wherein

The predetermined length of time L is a protocol agreement, or a time length value indicated by the base station by the system broadcast message.
The method of claim 2, wherein the predetermined length of time L is a maximum of a discontinuous transmission period.
The method of claim 3, wherein

The pre-agreed time point T is a system frame number SFN or a super system frame number HSFN of the agreed value M, wherein the agreed value M is a result of modulo operation on the predetermined time length L.
The method of claim 4 wherein the method further comprises:

The base station sends an updated system message on the wireless interface according to the rules of the system message scheduling, and applies the updated system message.
The method of claim 1 wherein the method further comprises:

The base station sends the system message update indication C to the UE in a system message modification period of the system message modification period in which the system message starts to be updated, where the system message update indication C is used to indicate that the UE is in the next system message. The modification cycle begins to receive updated system messages.
The method according to any one of claims 1 to 6, wherein

The system message update indications A, B, and C are independent cells, and are carried by paging the paging message or the downlink control information DCI carried by the physical downlink control channel PDCCH, or the system message update indication A, B, C is a different value of a cell, or the system update indicates that A, B, and C are combinations of two cell values.
A system message update processing method includes:

Receiving, by the UE, a system message update indication A sent by the base station to the UE within a predetermined time length L before the system message is updated, according to the system message update indication A, starting to receive the updated system message at a pre-agreed time point T; or

Receiving, by the UE, a system message modification period that is started by the base station from the system message, in a time range that lasts for a predetermined length of time L, the sent system message update indication B, according to the system message update indication B, immediately starts receiving the updated system message; or,

The UE receives the system message update indication C sent by the base station in a system message modification period before the system message update, and receives the updated system message in the next system message modification period according to the system message update indication C.
A system message update processing device is applied to a base station, including:

The first sending module is configured to send a system message update indication A to the UE within a predetermined time length L before the system message is updated, where the system message update indication A is used to indicate that the UE starts to receive at a predetermined time point T. Updated system message; or,

a second sending module, configured to start, according to a system message modification period that is updated by the system message, send a system message update finger to the UE within a time range that lasts for a predetermined length of time L Show B, wherein the system message update indication B is used to indicate that the UE immediately starts to receive the updated system message; or

The third sending module is configured to send a system message update indication C to the UE in a system message modification period before the system message is updated, where the system message update indication C is used to indicate that the UE is in the next system message modification period. Receive updated system messages.
A system message update processing device is applied to a terminal, including:

The first receiving module is configured to receive a system message update indication A sent by the base station to the terminal UE within a predetermined time length L before the system message is updated, and start receiving the updated system according to the system message update indication A at a predetermined time point T. Message; or,

And a second receiving module, configured to receive a system message update period that is started by the base station starting from the system message, and send a system message update indication B within a time range that lasts for a predetermined length of time L, and start to start immediately according to the system message update indication B. Receive updated system messages; or,

The third receiving module is configured to receive, by the base station, a system message update indication C sent in a system message modification period before the system message is updated, and receive the updated system message in the next system message modification period according to the system message update indication C. .
A computer storage medium having stored therein computer executable instructions configured to perform the system message update processing method of any of claims 1-7, or to perform the method of claim 8. The system message update processing method described.