CN107852671B

CN107852671B - Access control method, access equipment and mobile terminal

Info

Publication number: CN107852671B
Application number: CN201580081566.4A
Authority: CN
Inventors: 郑潇潇; 庞伶俐; 徐小英
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2020-04-28
Anticipated expiration: 2035-11-30
Also published as: WO2017091935A1; CN107852671A

Abstract

An access control method, access equipment and a mobile terminal are provided, wherein the method comprises the following steps: acquiring a cell group, wherein the cell group comprises a first cell and a second cell, and the first cell is a cell broadcasting a complete system broadcast message; the second cell is other cells except the first cell in the cell group; broadcasting a System Information Block (SIB) to the first cell, broadcasting an access parameter and a residence parameter contained in the SIB to the second cell, and broadcasting the cell group identity to the first cell and the second cell. The access equipment in the embodiment of the invention broadcasts the downlink control information to the cells, does not need to broadcast complete SIB to all the cells, and can reduce the data volume of the broadcast, thereby reducing the overhead of the access equipment for broadcasting the downlink control information.

Description

Access control method, access equipment and mobile terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an access control method, an access device, and a mobile terminal.

Background

With network evolution and the use of high frequency band, small cells need to support User Equipment (UE) camping in consideration of dense deployment scenarios and independent deployment of the small cells. A small cell is a kind of base station, and is called a cell, a small cell, or the like, with respect to a base station having a large coverage area, in accordance with parameters such as the coverage area of the base station.

Measuring by UE, acquiring Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS) Synchronization of a Synchronization channel, identifying a cell, reading a Master Information Block (MIB)/Supplementary Information (SI) message, storing and entering Discontinuous Reception (DRX), and receiving paging (paging) or initiating access by the UE according to the acquired MIB/SIB message;

therefore, when the UE resides in a small cell, the UE needs to change/reselect the cell due to mobility, and then frequently reacquires a System Information Block (SIB), and in addition, since all the resident users need to be supported, the overhead (overhead) of the downlink control Information of the System broadcast Information that must be issued by the cell continuously according to a certain period is large, and the overhead of the downlink control Information is large in the case of macro network deployment.

Disclosure of Invention

The embodiment of the invention provides an access control method, access equipment and a mobile terminal, which are used for reducing the overhead of downlink control information.

An embodiment of the present invention provides an access control method, including:

acquiring a cell group, wherein the cell group comprises a first cell and a second cell, and the first cell is a cell broadcasting a complete system broadcast message; the second cell is other cells except the first cell in the cell group;

broadcasting a System Information Block (SIB) to the first cell, broadcasting an access parameter and a residence parameter contained in the SIB to the second cell, and broadcasting the cell group identity to the first cell and the second cell.

In the present embodiment, "first" and "second" are used to distinguish two types of cells, and do not represent other technical meanings. The number of the first cell and the second cell may be more or less, and is determined according to the number of cells in the cell group and other factors. It is not to be understood that both the first cell and the second cell must have a fixed number of cells. The cells within a cluster may be the most marginal cells adjacent to cells of other clusters, or there may be more cells adjacent to cells within other clusters, and the first cell may be a cell adjacent to a cluster other than the cluster.

The access parameter is a relevant parameter for the mobile terminal to perform cell access, the camping parameter is a relevant parameter required by the mobile terminal to camp in a cell, the selection of the specific parameter may be different according to different networks and cells, and the specific parameter is not uniquely defined in this embodiment.

In an optional implementation manner, the access parameters and the camping parameters included in the SIB include:

and the physical hybrid retransmission indication channel PHICH, the system frame number SFN and the residence threshold are contained in the master information block MIB of the SIB.

In an optional implementation manner, since the cell group is divided and the cells in the cell group are divided, after the SIB is changed, information synchronization needs to be performed, the embodiment of the present invention provides the following solutions: the method further comprises the following steps:

determining the version number of the SIB after the SIB is changed;

sending paging messages to the mobile terminals in the first cell and the second cell to carry out SIB updating and the version number;

and updating the changed SIB information and the version number in the first cell and the second cell through the radio network temporary identification BCH-RNTI of the broadcast channel.

An embodiment of the present invention provides an access control method in a second aspect, including:

the mobile terminal receives the identification of the cell group;

the mobile terminal determines whether the identification of the cell group is the same as the identification of the cell group received last time, and determines whether the version number of a System Information Block (SIB) corresponding to the identification of the cell group changes;

if not, receiving an SIB corresponding to the identification of the cell group, and residing or accessing the cell in the cell group according to the SIB;

and if the change occurs, receiving the access parameters and the resident parameters contained in the SIB corresponding to the cell group identification.

Before this embodiment, the mobile terminal may have received the system information block SIB corresponding to the identity of the cell group, and camped or accessed to the cells in the cell group according to the SIB.

In an optional implementation manner, there may be several situations in receiving the identifier of the cell group and triggering the corresponding SIB, one of which is initiated by the mobile terminal actively, for example, the mobile terminal starts up and actively acquires the identifier without available effective SIB, and in this case, the mobile terminal may be located in any cell; in addition, there is another case that the mobile terminal crosses a cell group due to moving, in this case, when the mobile terminal moves to a first cell, the mobile terminal receives an identifier of a new cell group, and also receives a complete SIB corresponding to the identifier of the cell group, and before the mobile terminal receives the identifier of the cell group, the method further includes: an SIB request message is sent to an access device.

In an optional implementation, the receiving the identification of the cell group includes:

the identification of the cell group broadcasted in the master information block MIB is received or the identification of the cell group is received by means of a pilot signal.

In an optional implementation manner, based on a requirement that the terminal actively acquires the SIB, before the sending the SIB request message to the access device, the method further includes:

and the mobile terminal detects whether the complete SIB is stored, and if not, the mobile terminal executes the SIB request message sent to the access equipment after the access.

An embodiment of the present invention provides an access device in three aspects, including:

an information obtaining unit, configured to obtain a cell group, where the cell group includes a first cell and a second cell, and the first cell is a cell that broadcasts a complete system broadcast message; the second cell is other cells except the first cell in the cell group;

an information sending unit, configured to broadcast a system information block SIB to the first cell, broadcast an access parameter and a camping parameter included in the SIB to the second cell, and broadcast an identifier of the cell group to the first cell and the second cell.

In an optional implementation manner, the access device further includes:

a version determination unit, configured to determine a version number of the SIB after the SIB is changed;

the information sending unit is further configured to send paging messages to the mobile terminals in the first cell and the second cell for SIB update, and the version number;

In an alternative implementation manner, in a fourth aspect, an embodiment of the present invention provides a mobile terminal, including:

an information receiving unit, configured to receive an identifier of a cell group;

an information determining unit, configured to determine whether an identifier of the cell group is the same as an identifier of a cell group received last time, and determine whether a version number of a system information block SIB corresponding to the identifier of the cell group changes;

the information receiving unit is further configured to receive an SIB corresponding to the identifier of the cell group if the information determining unit determines that the information is different, and reside in or access the cell in the cell group according to the SIB; and if the information determining unit determines that the change occurs, receiving access parameters and resident parameters contained in the SIB corresponding to the cell group identification.

In an optional implementation manner, the mobile terminal further includes:

a request sending unit, configured to send an SIB request message to the access device before the information receiving unit receives the identifier of the cell group.

In an alternative implementation, the information receiving unit is configured to receive an identifier of a cell group broadcasted in the master information block MIB, or receive the identifier of the cell group through a pilot signal.

In an optional implementation manner, the mobile terminal further includes: a detecting unit, configured to detect whether a complete SIB is stored in the mobile terminal before the request sending unit sends the SIB request message to the access device;

the request sending unit is configured to send an SIB request message to the access device if the detection result of the detecting unit is negative.

According to the technical scheme, the embodiment of the invention has the following advantages: the access equipment broadcasts the downlink control information to the cells, does not need to broadcast complete SIB to all the cells, and can reduce the data volume of the broadcast, thereby reducing the overhead of the access equipment for broadcasting the downlink control information.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a method according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of a method according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of a method according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a cell group distribution according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an access device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an access device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an access device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an access device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In mobile communication, the area covered by wireless signals is called a cell, the earliest cell refers to the range covered by the signals of a base station, and the latter logically divided cell is not limited to the signal coverage of a base station. In the embodiment of the present invention, a cell may refer to a general cell, and may also refer to a small cell, a micro cell (cellular cell), a pico cell, an intelligent cell, and the like. In the following embodiments, the illustration of small cells should not be understood as a unique limitation to the representation of cells.

Based on the foregoing description, the main problem that the small cell supports UE camping is that downlink broadcast overhead is large, and a mobile UE continuously reselects or changes a cell, and reacquires a System Information Block (SIB), which results in power consumption.

In the case of R10, there are 19 SIBs. For containing system information, there are a total of 19 types of SIBs. The scheduling information of the SIB is carried by MIB or Scheduling Block (SB). Examples are as follows:

(1) SIB 1: system information including a Non-Access stratum (NAS) layer and a UE timer/counter;

(2) SIB 2: information including a User Registration Area (URA);

(3) SIB 3: contains parameters for cell selection and reselection;

(4) SIB 5: including parameters for cell common physical channel configuration;

(5) SIB 7: information including uplink interference and dynamic persistence level;

(6) SIB 11: containing measurement control information. The system messages are transmitted on a Broadcast Control Channel (BCCH), then mapped to the BCH or Forward Access Channel (FACH), and always matched to the BCCH or FACH transport block size, and if necessary, a Radio Resource Control (RRC) is responsible for inserting padding bits.

(7) SIB 18: PLMN identities of neighboring cells in idle and connected mode.

(8) SIB 19: including frequencies and priorities between cells of different systems.

The amount of complete SIB information is large and not all mobile terminals need a complete SIB at any time.

As shown in fig. 1, it is a network system architecture diagram, wherein a network side includes a base station, a base station controller, etc., and belongs to a network side control node. The circular area below the base station is illustrated as cells, each circular coverage area corresponds to a small cell, and two cell groups are illustrated in fig. 1, each cell group can be divided into two types of cells, one type is located at the edge area of the cell group and is adjacent to cells in other cell groups, and the other type is located at the center area of the cell group and is not adjacent to cells in other cell groups. The cell clusters may be arranged according to network management and algorithms, such as: the nodes are divided by network side control nodes such as a base station or a network manager, and the dividing basis can include: cell coverage area, number of users, etc. Generally speaking, a cluster should be geographically proximate, and based on the number of users in the geographic area, the greater the number of users, the smaller the cluster coverage to reduce the administrative load on a single cluster. The embodiment of the present invention is not limited uniquely, which is a cell group division algorithm.

In fig. 1, the mobile terminal is illustrated in the left cell group, and the mobile terminal may move between cells and also move to a cell in the right cell group.

Based on the system architecture diagram shown in fig. 1, an embodiment of the present invention provides an access control method, as shown in fig. 2, please refer to fig. 1 and fig. 4, and the access control method is applied to an access device, for example: the base station, the network management and other devices specifically include:

201: acquiring a cell group, wherein the cell group comprises a first cell and a second cell, and the first cell is a cell broadcasting a complete system broadcast message; the second cell is a cell other than the first cell in the cell group;

in the present embodiment, "first" and "second" are used to distinguish two types of cells, and do not represent other technical meanings. The number of the first cell and the second cell may be more or less, and is determined according to the number of cells in the cell group and other factors. It is not to be understood that both the first cell and the second cell must have a fixed number of cells. The cells in the cell group may be the most marginal cells adjacent to the cells in other cell groups, or more cells may be adjacent to the cells in other cell groups, for example, in an overlapping manner (this may be avoided as much as possible when dividing the cell group). The first cell may be a cell adjacent to a cell group other than the cell group.

202: broadcasting a system information block SIB to the first cell, broadcasting an access parameter and a camping parameter contained in the SIB to the second cell, and broadcasting the cell group identifier to the first cell and the second cell.

In this embodiment, the access device broadcasts the downlink control information to the cells, and does not need to broadcast a complete SIB to all the cells, which can reduce the amount of data to be broadcast, thereby reducing the overhead of the access device in broadcasting the downlink control information.

As a more specific example, the access parameters and the camping parameters included in the SIB include:

a Physical Hybrid-arq indicator Channel (PHICH), a System Frame Number (SFN), and a camping threshold, which are included in the master information block MIB of the SIB.

Where the camping threshold is a threshold for signal strength, specifying that the signal strength of the mobile terminal in the cell should be above the camping threshold, and if below the camping threshold should not camp in the cell,

because the embodiment of the invention divides the cell group and divides the cells in the cell group, after the SIB changes, the information synchronization needs to be performed, and the embodiment of the invention provides the following solution: the method further comprises the following steps:

determining the version number of the SIB after the SIB is changed;

sending paging messages to the mobile terminals in the first cell and the second cell to update SIB and the version number;

updating the changed SIB information and the version number in the first cell and the second cell through Broadcast Channel Radio network temporary Identity (BCH-RNTI).

The version number is determined to distinguish whether a change in the SIB occurs, for example: after receiving the SIB, the mobile terminal can determine whether the SIB is consistent with the previously received SIB by using the version number of the SIB, and if so, the SIB is determined not to be changed without updating the related information; if not, then it can be determined that the SIB has changed and the relevant information needs to be updated.

In response to the implementation of the previous embodiment, an embodiment of the present invention further provides another access control method, please refer to fig. 3, and refer to fig. 1 and fig. 4 together, where the method includes:

301: the mobile terminal receives the identification of the cell group;

before this step, the mobile terminal may have received the system information block SIB corresponding to the identity of the cell group and camped or accessed to the cells in the cell group according to the SIB.

In the embodiment of the present invention, a cell group may include a first cell and a second cell, where the first cell is a cell broadcasting a complete system broadcast message; the second cell is a cell other than the first cell in the cell group; the first cell may be a cell adjacent to a cell group other than the cell group.

In the present embodiment, "first" and "second" are used to distinguish two types of cells, and do not represent other technical meanings. The number of the first cell and the second cell may be more or less, and is determined according to the number of cells in the cell group and other factors. It is not to be understood that both the first cell and the second cell must have a fixed number of cells. The cells in the cell group may be the most marginal cells adjacent to the cells in other cell groups, or more cells may be adjacent to the cells in other cell groups, for example, in an overlapping manner (this may be avoided as much as possible when dividing the cell group). The mobile terminal may theoretically be unaware of whether it is currently in the first cell or the second cell, and it only needs to know whether the movement across the cell group currently occurs, i.e. whether it moves to another cell group is determined according to whether the identity of the cell group changes.

302: determining whether the identifier of the cell group is the same as the identifier of the previously received cell group, and determining whether the version number of a System Information Block (SIB) corresponding to the identifier of the cell group changes; if not, entering 303, and if the change occurs, entering 304;

303: receiving an SIB corresponding to the identifier of the cell group, and residing in or accessing the cell in the cell group according to the SIB;

in this embodiment, if the mobile terminal does not have complete SIB information in the cell that the mobile terminal moves to the new cell group, or the mobile terminal does not store the complete SIB information of the current cell group, the UE may initiate a random access request to acquire the complete SIB information.

304: and receiving the access parameters and the resident parameters contained in the SIB corresponding to the cell group identification.

In the embodiment of the present invention, the mobile terminal may not stay in one cell, and does not move to another cell, and receives the broadcast information of the access device in the staying cell. Although the mobile terminal may not know whether it is in the first cell or the second cell, this does not indicate that it has no known capabilities. From the broadcast information received above, the mobile terminal can determine whether itself is in the first cell or the second cell based on the obvious difference.

In this embodiment, the mobile terminal moves within the cell group, and it is not necessary to reacquire the complete SIB during the cell reselection process, and accordingly the access device does not need to broadcast the complete SIB, so that power consumption of the mobile terminal can be reduced, and overhead of the access device broadcasting downlink control information can be reduced.

In step 301 above, there may be several situations in receiving the identifier of the cell group and triggering the corresponding SIB, one of which is initiated by the mobile terminal actively, for example, the mobile terminal starts up and actively acquires the identifier without available effective SIB, and in this case, the mobile terminal may be located in any cell; in addition, there is another case that the mobile terminal crosses a cell group due to movement, in which case, when the mobile terminal moves to the first cell, the mobile terminal receives an identifier of a new cell group, and also receives a complete SIB corresponding to the identifier of the cell group, which is specifically as follows:

before the mobile terminal receives the identification of the cell group, the method further includes: an SIB request message is sent to an access device.

Optionally, based on the requirement that the terminal actively acquires the SIB, the embodiment of the present invention may further include: before the sending the SIB request message to the access device, the method further includes:

and the mobile terminal detects whether the complete SIB is stored, and if not, the mobile terminal executes the SIB request message sent to the access equipment after access.

It should be noted that the identifier of the cell group and the SIB are actually received at the same time, or even the SIB is received first; the timing sequence here is only to determine whether the self has a cross-cell cluster, and if the cross-cell cluster is determined, the corresponding SIB needs to be acquired to implement the procedures of camping, accessing, and the like.

the physical hybrid retransmission indication channel PHICH, the system frame number SFN and the residence threshold are contained in the master information block MIB of the SIB.

As a more specific example, this embodiment further provides a transmission manner of the identifier of the cell group, which is specifically as follows: the receiving cell group identifier includes:

It should be noted that, the transmission of the identifier of the cell group by using other methods does not cause the solution of the embodiment of the present invention to be impossible, and only needs to ensure the timeliness thereof, so that the embodiment of the present invention does not uniquely define the specific transmission method.

As an example of a small cell, in a dense cell deployment scenario as shown in FIG. 5, a cell cluster (in FIG. 5, there are four cell clusters: cluster 1-cluster 4. cluster, which may also be referred to as a cluster of cells or a cluster of cells) area is set according to network management and algorithm, and as shown in FIG. 5, all cells belong to four clusters; the network side control node ensures that the contents of System Information Blocks (SIB) of the cells in the cluster are the same and are updated synchronously;

cells located at the boundary of different cluster, i.e. the cells with padding in fig. 5, need to broadcast the complete SIB; the cells in the central area, i.e. the cells without padding in the figure, only need to broadcast the access related parameters and the camping related parameters, which optionally includes: downlink bandwidth in the MIB, Physical Hybrid-ARQ Indicator Channel (PHICH) configuration, System Frame Number (SFN), and a camping threshold (signal strength).

For example, the MIB may contain contents in three parts:

a first part:

configuration of phic-Config PHICH-Config,// PCICH

system frame number BIT STRING (SIZE (8)),// system frame number, STRING length 8

The PHICH configuration information is used for the UE to receive a PHICH channel and a PDCCH channel;

the SystemFrameNumber system frame number is used for the UE to acquire timing.

A second part:

PHICH-Config: : SEQUENCE {// PHICH configuration SEQUENCE

PH-Duration estimated normal, extended,// PCICH time instance Normal, extended

phy-Resource estimated { oneSixth, half, one, two }// PCICH Resource enumeration { one sixth, one half, one, two }

}

This part is a specific PHICH channel configuration for the UE to find and receive the corresponding PHICH channel.

And a third part:

cellIdentity,// cell identity

cellBarred estimated { barred, notBarred },// cell barred enumeration { barred, not barred },/]

The cell ID of this portion, used for the UE to identify the access cell; the cell access indication is used for informing the UE whether the cell supports reselection access.

A network side:

A. the network side control node broadcasts a complete SIB in a cell of a cluster boundary, and other cells only broadcast access and resident necessary contents, including: a Packet Random Access Channel (PRACH) Channel, an identifier clusterID of a cell group, and the like; this may save network resources.

B. For different types of UEs, the following:

b1, mobile UE (UE moved from other cluster) can get the complete SIB by just entering, i.e.: and when the cell moves to the cell of the cluster boundary, acquiring the complete SIB. The UE may store the complete SIB and move within the cluster without re-acquiring the SIB, only the camping and access essential information, such as the central area MIB, needs to be acquired.

B2, the user who is still on the power can only need to acquire the content necessary for residence and access, and the complete information can be acquired by the special message if the UE subsequently initiates access.

The user who is statically started up can send complete SIB information to the network through the indication carried in the RRC link establishment request, and then the SIB information is stored and used in the cluster;

in addition, if the UE is powered on in a cluster border cell, the complete SIB, as well as the MIB, may be acquired.

C. When the SIB changes, the control node on the cell Network side of the cluster border may issue paging (paging) and system message change in a conventional (legacy) manner, and the control node on the cell Network side of the cluster center may trigger the issuance of an update SIB (specifically, scheduling through Broadcast Channel Radio Network Temporary Identity (BCH-RNTI)), and the UE updates a new value tag (value id) at the same time.

The Value tag is a version tag of the system broadcast information, because the network needs to update the system broadcast message in some cases, different versions are numbered, so that the UE knows that the system information is updated, and meanwhile, the UE can know whether the system broadcast message stored by the UE is the latest version or not, and if the system broadcast message does not need to be acquired again. The value tag is technically substantially the same as the version number of the SIB for determining whether the SIB has changed.

The UE side:

after the UE acquires the SIB in a cell, if cell reselection occurs, if the reselected cell is in the same cluster as a previously camped or accessed cell, then the SIB does not need to be read again, where a value tag or a timer is changed for each cell group (per cluster); UE can judge whether MIB/SIB needs to be read again according to cluster ID; the clusterID may be obtained in the broadcasted MIB or may be obtained via pilot signals.

The pilot signal is a direct sequence spread spectrum signal that is continuously transmitted by the access devices without modulation, which enables the mobile terminal to acquire the forward code division multiple access channel timing, provide a relative demodulation phase reference, and provide a signal strength comparison for each access device, which the mobile terminal can determine when to handoff.

An embodiment of the present invention further provides an access device, as shown in fig. 6, including:

an information obtaining unit 601, configured to obtain a cell group, where the cell group includes a first cell and a second cell, and the first cell is a cell broadcasting a complete system broadcast message; the second cell is a cell other than the first cell in the cell group;

an information sending unit 602, configured to broadcast a system information block SIB to the first cell, broadcast an access parameter and a camping parameter included in the SIB to the second cell, and broadcast an identifier of the cell group to the first cell and the second cell.

Optionally, the access parameters and the camping parameters included in the SIB include:

Further, as shown in fig. 7, the access device further includes:

a version determining unit 701, configured to determine a version number of the SIB after the SIB is changed;

the information sending unit 602 is further configured to send paging messages to the mobile terminals in the first cell and the second cell for updating the SIB, and the version number;

and updating the changed SIB information and the version number in the first cell and the second cell through the radio network temporary identification (BCH-RNTI) of a broadcast channel.

An embodiment of the present invention further provides a mobile terminal, as shown in fig. 8, including:

an information receiving unit 801 configured to receive an identifier of a cell group;

an information determining unit 802, configured to determine whether the identifier of the cell group is the same as the identifier of the cell group received last time, and determine whether a version number of a system information block SIB corresponding to the identifier of the cell group changes;

the information receiving unit 801 is further configured to receive an SIB corresponding to the identifier of the cell group if the information determining unit 802 determines that the information is not the same, and reside or access the cell in the cell group according to the SIB; if the information determining unit 802 determines that the change occurs, it receives the access parameter and the camping parameter included in the SIB corresponding to the identifier of the cell group.

Further, as shown in fig. 9, the mobile terminal further includes:

a request sending unit 901, configured to send an SIB request message to the access device before the information receiving unit 801 receives the identifier of the cell group.

Further, based on the requirement of the terminal to actively acquire the SIB, the embodiment of the present invention may further include: as shown in fig. 10, the mobile terminal further includes:

a detecting unit 1001, configured to detect whether a complete SIB is stored in the mobile terminal before the request sending unit sends the SIB request message to the access device;

Optionally, the information receiving unit 801 is configured to receive an identifier of a cell group broadcasted in the master information block MIB, or receive an identifier of a cell group through a pilot signal.

An embodiment of the present invention further provides another access device, as shown in fig. 11, including: a receiver 1101, a transmitter 1102, a processor 1103, and a memory 1104; the processor 1103 is configured to perform correlation operations during the process of identifying data received by the receiver 1101 and controlling data transmitted by the transmitter 1102, and the memory 1104 may be configured to provide a storage space required by the processor 1103 in the operations, and may also be configured to store data received by the receiver 1101 and data to be transmitted by the transmitter 1102;

the processor 1103 is configured to obtain a cell group, where the cell group includes a first cell and a second cell, and the first cell is a cell broadcasting a complete system broadcast message; the second cell is a cell other than the first cell in the cell group;

the transmitter 1102 is configured to broadcast a system information block SIB to the first cell, broadcast an access parameter and a camping parameter included in the SIB to the second cell, and broadcast an identifier of the cell group to the first cell and the second cell.

Further, the processor 1103 is further configured to determine a version number of the SIB after the SIB is changed;

the transmitter 1102 is further configured to send a paging message to the mobile terminals in the first cell and the second cell for updating the SIB, and the version number;

An embodiment of the present invention further provides another mobile terminal, as shown in fig. 12, including: a receiver 1201, a transmitter 1202, a processor 1203, and a memory 1204; the processor 1203 is configured to perform correlation operations during the process of identifying data received by the receiver 1201 and controlling data transmitted by the transmitter 1202, and the memory 1204 may be configured to provide a storage space required by the processor 1203 during the operations, and may also be configured to store data received by the receiver 1201 and data to be transmitted by the transmitter 1202;

the receiver 1201 is configured to receive an identifier of a cell group;

the processor 1203 is configured to determine whether the identifier of the cell group is the same as the identifier of the cell group received last time, and determine whether a version number of a system information block SIB corresponding to the identifier of the cell group changes;

the receiver 1201 is configured to receive an SIB corresponding to the identifier of the cell group if the SIB is different, and camp on or access the cell in the cell group according to the SIB; and if the change occurs, receiving the access parameters and the resident parameters contained in the SIB corresponding to the cell group identification.

Optionally, the transmitter 1202 is further configured to transmit a SIB request message to the access device before receiving the identification of the cell group at the mobile terminal.

Further, based on the requirement of the terminal to actively acquire the SIB, the embodiment of the present invention may further include:

the transmitter 1202 is configured to detect whether a complete SIB is stored before the request sending unit sends the SIB request message to the access device; if not, sending SIB request message to access device.

Optionally, the receiver 1201 is specifically configured to receive an identifier of a cell group broadcasted in the master information block MIB, or receive the identifier of the cell group through a pilot signal.

As shown in fig. 13, for convenience of description, only the parts related to the embodiment of the present invention are shown, and details of the specific technology are not disclosed, please refer to the method part in the embodiment of the present invention. The terminal may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, etc., taking the terminal as the mobile phone as an example:

fig. 13 is a block diagram showing a partial structure of a cellular phone related to a terminal provided in an embodiment of the present invention. Referring to fig. 13, the handset includes: radio Frequency (RF) circuitry 1310, memory 1320, input unit 1330, display unit 1340, sensor 1350, audio circuitry 1360, wireless fidelity (WiFi) module 1370, processor 1380, and power supply 1390. Those skilled in the art will appreciate that the handset configuration shown in fig. 13 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 13:

RF circuit 1310 may be used for receiving and transmitting signals during a message transmission or call, and in particular, for processing received downlink information of a base station by processor 1380; in addition, the data for designing uplink is transmitted to the base station. In general, the RF circuit 1310 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuit 1310 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to global system for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 1320 may be used to store software programs and modules, and the processor 1380 executes various functional applications and data processing of the cellular phone by operating the software programs and modules stored in the memory 1320. The memory 1320 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1320 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1330 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 1330 may include a touch panel 1331 and other input devices 1332. Touch panel 1331, also referred to as a touch screen, can collect touch operations by a user (e.g., operations by a user on or near touch panel 1331 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 1331 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 1380, where the touch controller can receive and execute commands sent by the processor 1380. In addition, the touch panel 1331 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 1330 may include other input devices 1332 in addition to the touch panel 1331. In particular, other input devices 1332 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 1340 may be used to display information input by a user or information provided to the user and various menus of the cellular phone. The Display unit 1340 may include a Display panel 1341, and optionally, the Display panel 1341 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, touch panel 1331 can overlay display panel 1341, and when touch panel 1331 detects a touch operation on or near touch panel 1331, processor 1380 can be configured to determine the type of touch event, and processor 1380 can then provide a corresponding visual output on display panel 1341 based on the type of touch event. Although in fig. 13, the touch panel 1331 and the display panel 1341 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 1331 and the display panel 1341 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 1350, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 1341 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 1341 and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The audio circuit 1360, speaker 1361, microphone 1362 may provide an audio interface between the user and the handset. The audio circuit 1360 may transmit the electrical signal converted from the received audio data to the speaker 1361, and the electrical signal is converted into a sound signal by the speaker 1361 and output; on the other hand, the microphone 1362 converts the collected sound signal into an electric signal, converts the electric signal into audio data after being received by the audio circuit 1360, and then processes the audio data by the audio data output processor 1380, and then sends the audio data to, for example, another cellular phone via the RF circuit 1310, or outputs the audio data to the memory 1320 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 1370, and provides wireless broadband internet access for the user. Although fig. 13 shows the WiFi module 1370, it is understood that it does not belong to the essential constitution of the handset, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 1380 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 1320 and calling data stored in the memory 1320, thereby integrally monitoring the mobile phone. Optionally, processor 1380 may include one or more processing units; preferably, the processor 1380 may integrate an application processor, which handles primarily operating systems, user interfaces, application programs, etc., and a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated within processor 1380.

The handset also includes a power supply 1390 (e.g., a battery) to supply power to the various components, which may preferably be logically coupled to the processor 1380 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In an embodiment of the invention, the mobile phone may include a processor 1380 whose functions correspond to the processor 1103 in fig. 11, and an RF circuit 1310 corresponding to the transmitter 1102.

Fig. 14 is a schematic diagram of a server 1400 that may be used as an access device according to an embodiment of the present invention, and may include one or more Central Processing Units (CPUs) 1422 (e.g., one or more processors) and a memory 1432, one or more storage media 1430 (e.g., one or more mass storage devices) for storing applications 1442 or data 1444. Memory 1432 and storage media 1430, among other things, may be transient or persistent storage. The program stored on storage medium 1430 may include one or more modules (not shown), each of which may include a sequence of instructions operating on a server. Still further, a central processor 1422 may be disposed in communication with storage medium 1430 for executing a series of instruction operations on storage medium 1430 on server 1400.

The server 1400 can also include one or more power supplies 1426, one or more wired or wireless network interfaces 1450, one or more input-output interfaces 1458, and/or one or more operating systems 1441.

The steps performed by the access device in the above embodiments may be based on the server structure shown in fig. 14. Wherein the processor 1103 may correspond to the central processor 1422 of the server and the functions of the input output interface 1450 may correspond to the transmitter 1102.

It should be noted that the above-mentioned devices are merely divided according to functional logic, but are not limited to the above-mentioned division as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.

In addition, it is understood by those skilled in the art that all or part of the steps in the above method embodiments may be implemented by related hardware, and the corresponding program may be stored in a computer readable storage medium, where the above mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiment of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An access control method, comprising:

2. The method of claim 1, wherein the SIB contains access parameters and camping parameters comprising:

3. The method of claim 1, further comprising:

determining the version number of the SIB after the SIB is changed;

4. An access control method, comprising:

the mobile terminal receives the identification of the cell group; the cell group comprises a first cell and a second cell, wherein the first cell is a cell broadcasting a complete system broadcast message; the second cell is other cells except the first cell in the cell group; the first cell broadcasts a System Information Block (SIB), and the second cell broadcasts an access parameter and a resident parameter contained in the SIB;

5. The method of claim 4,

before the mobile terminal receives the identification of the cell group, the method further comprises: an SIB request message is sent to an access device.

6. The method of claim 4 or 5, wherein the SIB contains access parameters and camping parameters including:

7. The method of claim 4 or 5, wherein the identification of the receiving cell group comprises:

8. The method of claim 5, wherein prior to sending the SIB request message to the access device, the method further comprises:

9. An access device, comprising:

10. The access device of claim 9, wherein the SIB includes access parameters and camping parameters comprising:

11. The access device of claim 9, wherein the access device further comprises:

12. A mobile terminal, comprising:

an information receiving unit, configured to receive an identifier of a cell group; the cell group comprises a first cell and a second cell, wherein the first cell is a cell broadcasting a complete system broadcast message; the second cell is other cells except the first cell in the cell group; the first cell broadcasts a System Information Block (SIB), and the second cell broadcasts an access parameter and a resident parameter contained in the SIB;

13. The mobile terminal of claim 12, wherein the mobile terminal further comprises:

14. The mobile terminal of claim 12 or 13, wherein the SIB includes access parameters and camping parameters including:

15. The mobile terminal according to claim 12 or 13,

the information receiving unit is configured to receive an identifier of a cell group broadcasted in the master information block MIB, or receive an identifier of a cell group through a pilot signal.

16. The mobile terminal of claim 13,

the mobile terminal further includes: a detecting unit, configured to detect whether a complete SIB is stored in the mobile terminal before the request sending unit sends the SIB request message to the access device;