CN102137432A

CN102137432A - Method, device and system for terminal to access network

Info

Publication number: CN102137432A
Application number: CN2010102755224A
Authority: CN
Inventors: 朱星
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-07-27
Also published as: WO2011144142A1

Abstract

The invention discloses a method, a device and a system for a terminal to access a network, and relates to the field of communication for solving the problems of common control channel (CCCH) congestion caused by simultaneous access of a large number of terminals to the network, and higher delay when the terminal accesses the network. The method comprises the following steps of: configuring an extended CCCH for a cell; and transmitting a first system message to the terminal in the cell, wherein the first system message comprises information indicating the presence of the extended CCCH in the cell and configuration information of the extended CCCH; and the first system message is used for indicating that the terminal accesses the network via the extended CCCH. The method can be applicable to a wireless communication network, particularly a scene that a large number of machine to machine (M2M) terminals access the network simultaneously.

Description

Method, device and system for accessing terminal to network

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for a terminal to access a network.

Background

Under the radio network architecture, terminals in a cell access the network through a Common Control Channel (CCCH). Currently, the number of CCCHs configured for each cell is fixed, and at most 4 CCCHs can be configured for one cell, where the 4 CCCHs are located at time slots 0, 2, 4, and 6 of the C0 carrier, respectively.

With the continuous development of network technology, the number of terminals is gradually increasing, and especially, the number of Machine To Machine (M2M) terminals is rapidly increasing. When the number of terminals requesting to access the network at the same time in a cell is large, the CCCH may be congested due to the limited number of CCCHs, so that the delay of the terminal accessing the network is high, and even the terminal cannot access the network normally.

Disclosure of Invention

Embodiments of the present invention provide a method, an apparatus, and a system for a terminal to access a network, which can reduce a delay of the terminal accessing the network.

In one aspect, a method for a terminal to access a network is provided, including: configuring an extended common control channel for a cell; and sending a first system message to a terminal in the cell, wherein the first system message comprises information indicating that the cell has an extended common control channel and configuration information of the extended common control channel, and the first system message is used for indicating the terminal to access a network through the extended common control channel.

In another aspect, a method for a terminal to access a network is provided, including: receiving a first system message sent by a network side, wherein the first system message comprises information indicating that a cell has an extended common control channel and configuration information of the extended common control channel; determining that an extended common control channel exists in the cell according to the information indicating that the extended common control channel exists in the cell; and accessing the network through the extended common control channel according to the configuration information of the extended common control channel.

In still another aspect, a network device is provided, including:

a configuration module, configured to configure an extended common control channel for a cell;

a sending module, configured to send a first system message to a terminal in the cell, where the first system message includes information indicating that an extended common control channel exists in the cell and configuration information of the extended common control channel, and the first system message is used to indicate that the terminal accesses a network through the common control channel.

In another aspect, a terminal is provided, including:

a receiving module, configured to receive a first system message sent by a network side, where the first system message includes information indicating that an extended common control channel exists in a cell and configuration information of the extended common control channel;

a determining module, configured to determine that an extended common control channel exists in a cell according to the information indicating that the extended common control channel exists in the cell;

and the access module is used for accessing a network through the extended public control channel according to the configuration information of the extended public control channel.

In a further aspect, a communication system is provided, comprising the terminal and the network device described above.

The method, the device and the system for accessing the terminal to the network provided by the embodiment of the invention can configure the extended common control channel for the cell, and the terminal in the cell can access the network through the extended common control channel, thereby solving the problems that the number of the common control channels in the cell is limited, the common control channel is congested when the number of the terminals requesting to access the network at the same time is too large, and the terminal can not access the network normally even when the delay of accessing the network through the common control channel is higher. The terminal can access the network by expanding the common control channel, thereby relieving the access pressure of the common control channel, reducing the network access delay of the terminal and ensuring the normal access of the terminal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart of a method for a terminal to access a network according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for a terminal to access a network according to another embodiment of the present invention;

fig. 3 is a timing diagram illustrating a method for a terminal to access a network according to another embodiment of the present invention;

fig. 4 is a flowchart of step 301 in the method for accessing the network by the terminal shown in fig. 3;

fig. 5 is a flowchart of step 304 of the method for accessing the network by the terminal shown in fig. 3;

fig. 6 is a first schematic structural diagram of a base station controller according to an embodiment of the present invention;

FIG. 7 is a block diagram of a configuration module in the BSC shown in FIG. 6;

fig. 8 is a schematic structural diagram of a base station controller according to an embodiment of the present invention;

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

fig. 10 is a schematic diagram of a terminal structure provided in the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 order to solve the problems that a large number of terminals are simultaneously accessed into a network to cause CCCH congestion and the delay of the terminal access into the network is high, the embodiment of the invention provides a method, a device and a system for accessing the terminal into the network.

As shown in fig. 1, a method for a terminal to access a network according to an embodiment of the present invention includes:

step 101, configuring an extended common control channel for a cell;

step 102, sending a first system message to a terminal in a cell, where the first system message includes information indicating that the cell has an extended common control channel and configuration information of the extended common control channel, and the first system message is used to indicate that the terminal accesses a network through the extended common control channel.

The method for accessing the terminal into the network provided by the embodiment of the invention can configure the extended common control channel for the cell, so that the terminal in the cell can access the network by the extended common control channel, thereby reducing the access delay of a large number of terminals in the cell accessing the network simultaneously, improving the real-time property of the terminal accessing the network and ensuring the normal access of the terminal.

As shown in fig. 2, another embodiment of the present invention further provides a method for a terminal to access a network, including:

step 201, receiving a first system message sent by a network side, where the first system message includes information indicating that a cell has an extended common control channel and configuration information of the extended common control channel;

step 202, determining that an extended common control channel exists in a cell according to information indicating that the extended common control channel exists in the cell;

step 203, accessing the network through the extended common control channel according to the configuration information of the extended common control channel.

According to the method for accessing the terminal to the network provided by the embodiment of the invention, because the network side configures the extended common control channel for the cell, the terminal can access the network through the extended common control channel, so that the access delay of a large number of terminals in the cell accessing the network simultaneously is reduced, the real-time performance of the terminal accessing the network is improved, and the normal access of the terminal is ensured.

In order to enable those skilled in the art to more clearly understand the technical solution provided by the embodiment of the present invention, the method for accessing the terminal to the network provided by the embodiment of the present invention is described in detail below through a specific embodiment.

As shown in fig. 3, a method for a terminal to access a network according to another embodiment of the present invention includes:

step 301, the base station controller configures an extended common control channel for the cell.

In this embodiment, the base station controller may trigger the operation of configuring the extended common control channel for the cell in two ways.

One way is that the base station controller determines whether the CCCH in the cell is congested, and configures an extended common control channel for the cell if the determination result is that the CCCH is congested.

In this embodiment, a congestion timer may be preset in the base station controller, and the timing time of the congestion timer may be set according to the actual system requirement, for example, may be set to 5 minutes. The base station controller detects CCCH in the cell in real time within the timing time of the congestion timer, and judges CCCH congestion in the cell if the number of the information which cannot be analyzed and is received by the base station controller through the CCCH is larger than a preset threshold value when the timing time of the congestion timer is up; otherwise, the base station controller judges that the CCCH in the cell is normal. And after the base station controller obtains the detection result of the CCCH congestion condition, clearing the timing time of the congestion timer and restarting timing.

In another mode, a timer is preset on the base station controller, and if the timer reaches the preset extended common control channel configuration time, the base station controller configures the extended common control channel for the cell.

In this embodiment, the extended common control channel configuration time may be manually specified, for example, in an intelligent meter reading service, the time for a Machine To Machine (M2M) terminal To report the number of meters (i.e., the time for the M2M terminal To access the network) is fixed, for example, 2 am every day, and the extended common control channel configuration time may be set according To the time for the M2M terminal To report the number of meters, for example, the extended common control channel configuration time is set To 1 am every day for 50 minutes;

the extended common control channel configuration time may also be determined by statistics of CCCH congestion conditions, such as: as shown in table 1, the base station controller records the congestion condition of the CCCH every day, and performs statistics on the congestion condition of the CCCH according to a preset statistical period (e.g., 10 days) to obtain the congestion degree of the CCCH, compares the congestion degree of the CCCH with a preset congestion threshold (e.g., 50%), and determines the configuration time of the extended common control channel according to the comparison result, as shown in table 1, the configuration time of the extended common control channel is 3 points and 24 points.

Table 1:

the configuration time of the extended common control channel is determined by counting the congestion condition of the CCCH, so that the configuration time of the extended common control channel can be flexibly set, the configuration time of the extended common control channel is more accurately set, and the method is suitable for the change requirement of network services.

The above two ways of triggering the base station controller to configure the extended common control channel for the cell are only examples, and in the actual use process, the base station controller may also be triggered to configure the extended common control channel for the cell in other ways, and here, an example is not given for each case.

Further, as shown in fig. 4, in this embodiment, step 301 may include:

step 3011, the base station controller obtains the current idle channel of the cell.

The embodiment may determine the idle channel according to the service characteristics of the terminal, for example: terminals in a cell can be divided into two types, one type is an M2M terminal, the other type is other terminals (also called common terminals, such as mobile phones or Data cards) except for an M2M terminal, services of the M2M terminal are generally performed in the morning, but the situations that the common terminals perform services (such as voice services or Data services) in the morning are few, and according to the service characteristics of the M2M terminal and the common terminals, an idle Channel in the morning can be determined to be a Traffic Channel (Traffic Channel, TCH) and/or a Packet Data Traffic Channel (PDTCH);

in this embodiment, the current idle channel of the cell may also be determined by a method of measuring and counting channel states of each channel in the cell by the base station controller, and of course, the current idle channel of the cell may also be determined in other manners in an actual using process, which is not described in detail herein.

In step 3012, the base station controller converts the idle channel obtained in step 3011 into an extended common control channel.

In this embodiment, the base station controller may convert all the idle channels acquired in step 3011 into extended common control channels; in order to avoid the problem of idle waste of network resources caused by excessive number of the extended common control channels, the base station controller may also convert part of the idle channels into the extended common control channels according to the actual network access requirements. For example: the base station controller can randomly select a fixed number of idle channels from the idle channels as target idle channels according to the actual network access requirement, and convert the target idle channels into extended common control channels.

Of course, in the actual using process, the base station controller may also configure the extended common control channel for the cell in other manners, such as: the base station controller may newly configure one or more extended common control channels for the cell, and the like, and details of each case are not described herein.

Step 302, the base station controller sends a first system message to the terminal in the cell, where the first system message includes information indicating that the cell has an extended common control channel and configuration information of the extended common control channel.

The configuration information of the extended common control channel may include: the number of the extended common control channels, the wireless frequency point number and the time slot number of each extended common control channel, and the like; or, the number of the extended common control channels and the frequency hopping information description of the extended common control channels, etc.

At present, an existing normal terminal (other terminals except for the M2M terminal, such as a cell phone or a data card, etc.) in a cell cannot identify information indicating that an extended common control channel exists in the cell and configuration information of the extended common control channel, which are included in a first system message, and in order to save information processing resources occupied by the normal terminal in analyzing the first system message, optionally, the first system message may further include a system message processing indication, which is used to indicate the M2M terminal to process the first system message, and indicate other terminals except for the M2M terminal (the normal terminal, such as a cell phone or a data card, etc.) to skip (not identify) the first system message. Through the system message identification indication, the common terminal can directly skip the first system message without further deep analysis of the first system message, so that the information processing resource of the common terminal is saved, and the information processing speed of the common terminal is improved.

It should be noted that, when the M2M terminal recognizes the first system message and other terminals (Common terminals, such as mobile phones or data cards) other than the M2M terminal do not recognize the first system message, the extended Common Control Channel configured by the base station controller for the cell in step 301 is a machine-to-Machine Common Control Channel (MCCCH) (M2M Common Control Channel).

In this embodiment, the first system message may be obtained by expanding an existing system message, or may be a newly added system message.

In order to enable those skilled in the art to have a more specific knowledge about the first system message described in the embodiment of the present invention, so as to further understand the technical solution provided by the embodiment of the present invention, the specific form of the first system message is described below by taking the extended common control channel configured by the base station controller as a cell as MCCCH and taking the first system message as a newly added system message as an example.

In one aspect, in the present embodiment, the first system message may be in the form of systemlnformation 21 as shown in table 2.

Table 2:

the format of the L2 Pseudo Length value is shown in table 3, the value range of the L2 Pseudo Length value is 5-21, when the L2 Pseudo Length value is 5, 1 MCCCH exists in the cell, and when the L2 Pseudo Length value is 21, 9 MCCCHs exist in the cell.

Table 3:

RR management Protocol Discriminator＝0110。

the Skip Indicator may take any value that cannot be recognized by the normal terminal, and the Skip Indicator value that can be recognized by the normal terminal at present is 0000, and in this embodiment, in order to enable the System Information 21 to enable the M2M terminal to recognize, but enable the normal terminal to Skip, the Skip Indicator value may take any value other than 0000, for example: the Skip Indicator takes the value of 0001 and the like.

The System Information Type 21 Message Type is used to indicate that the System Information Type 21 is a newly added System Message, and the System Information Type 21 Message Type may take any value different from the existing System Message, for example: the value may be 01000011.

The MCCCH Channel Description is used to describe the configuration information of the MCCCH, and the format of the MCCCH Channel Description is shown in table 4:

table 4:

wherein, the Length of content (Length of content) is used for indicating the Length of the cell, and the value range is 2-18;

the time slot Number (TN) is used for indicating the time slot Number of the MCCCH, and the value range is 0-7;

an Absolute Radio Frequency Channel Number (ARFCN) is used to indicate the Radio Frequency point Number where the MCCCH is located.

SI 21Rest Octets is used to describe other MCCCH related information, and the format of SI 21Rest Octets is shown in table 5:

table 5:

in this embodiment, the Indicator (Indicator) is used to indicate whether an MCCCH channel exists in the cell, where when the Indicator is 0, the Indicator indicates that the MCCCH channel does not exist in the cell, and when the Indicator is 1, the Indicator indicates that the MCCCH exists in the cell; in this embodiment, the first system message includes information indicating that the extended common control channel exists in the cell, so that an Indicator is 1;

of course, in an actual usage process, when Indicator is equal to 0, it indicates that an MCCCH channel exists in a cell, and when Indicator is equal to 1, it indicates that an MCCCH does not exist in a cell, which is not described herein.

The MCCCH number (BS _ MCC _ CHANS) is used to indicate the number of mcchs in a cell, and the value range of BS _ MCC _ CHANS is 0 to 9 according to the MCCCH Channel Description shown in table 4;

the maximum interval multiframe (BS _ MPA _ MFRMS) of paging message retransmission is used for indicating the 51 multiframe of interval for sending the paging to the same M2M terminal paging group, and the value range of BS _ MPA _ MFRMS is 2-9.

The System Information 21 does not support frequency hopping (the frequency point number and the time slot number of the MCCCH are fixed), 9 MCCCHs are configured in a cell at most, in order to further expand the number of MCCCH channels of each cell, meet the requirement that more terminals access a network simultaneously, and enhance the anti-interference capability of the channels, on the other hand, the first System message may also be in the form of System Information 22 as shown in table 6.

Table 6:

the format of the L2 Pseudo Length value is shown in Table 3, and the value range of the L2 Pseudo Length value is 9-12.

RR management Protocol Discriminator＝0110。

The Skip Indicator may take any value that cannot be recognized by the normal terminal, and the Skip Indicator value that can be recognized by the normal terminal at present is 0000, and in this embodiment, in order to enable the System Information 22 to enable the M2M terminal to recognize, but enable the normal terminal to Skip, the Skip Indicator value may take any value other than 0000, for example: the Skip Indicator takes the value of 0001 and the like.

The System Information Type 22 Message Type is used to indicate that the System Information Type 22 is a newly added System Message, and the System Information Type 22 Message Type may take any value different from the existing System Message, for example: the value may be 01000110.

The MCCCH Channel Description is used to describe the configuration information of the MCCCH, and the format of the MCCCH Channel Description is shown in table 7:

TABLE 7

Wherein, the Channel Description IEI is a cell Identifier (information element Identifier) of the Channel Description cell, and the value of the Channel Description IEI is 01100100 (64);

the Channel Type (Channel Type) may take any value that is different from the values taken for existing channels, for example: the value of Channel Type can be set to 10000, etc.;

TN is the time slot number of the channel;

the Training Sequence Code (TSC) can be used for designing a new Training Sequence Code for the MCCCH;

a Mobile Allocation Index Offset (MAIO) for indicating a hopping waiting time;

a Hopping Sequence Number (HSN) for indicating on which set of frequency points the terminal can hop.

The MCCCH Mobile Allocation is used to indicate the frequency hopping sequence of the MCCCH, and the format of the MCCCH Mobile Allocation is shown in table 8:

table 8:

wherein, the MAC is a Mobile Allocation RF Channel, that is, a Mobile Allocation radio frequency Channel. If a channel is used, the bit is set to 1.

SI 22 Rest Octets is used to describe other MCCCH related information, and the format of SI 22 Rest Octets is shown in table 9:

table 9:

The MCCCH number (BS _ MCC _ CHANS) is used to indicate the number of mcchs in a cell, and as can be seen from the definition in table 8, the value range of BS _ MCC _ CHANS is 0-15;

the BS _ MPA _ MFRMS is used for indicating 51 multiframe intervals for sending the paging to the same M2M terminal paging group, and the value range of the BS _ MPA _ MFRMS is 2-9;

the MCCCH INDEX (BS _ MCC _ CHANS _ INDEX) is used to indicate which MCCCH channel the current channel description describes, and obviously BS _ MCC _ CHANS _ INDEX ≦ BS _ MCC _ CHANS.

The System Information 22 supports frequency hopping, 15 MCCCHs can be configured in a cell at most, the number of the MCCCHs is further expanded, the requirement that multiple terminals access a network simultaneously can be met to a greater extent, the terminals can be ensured to access the network normally, the delay of the terminals accessing the network is reduced, and the instantaneity of the terminals accessing the network is ensured. The base station controller broadcasts the configuration information of the MCCCH within the cell by transmitting the systemlnformation 22 of different contents multiple times. For example, the base station controller may describe description Information of 15 MCCCHs in a cell by broadcasting and transmitting System Information 22 of 15 different contents.

When a cell needs more mcchs (greater than 15 mcchs) it can be changed by changing the value of BS _ MCC _ CHANS. For example, BS _ MCC _ CHANS may be set to 32, and there will be 32 MCCCH channels in the cell. The base station controller can transmit the configuration Information of each MCCCH to the terminal by sending 32 System Information 22 System messages with different contents, wherein each message corresponds to a channel description of the MCCCH.

The two types of first System messages (System Information 21 and System Information 22) are only examples, and in the actual using process, the first System messages may also be in other forms, and details of each case are not described here.

Step 303, the terminal determines that the extended common control channel exists in the cell according to the information indicating that the extended common control channel exists in the cell, which is included in the received first system message. In this embodiment, the terminal may receive the first system message from the 0 slot of the C0 carrier.

And step 304, the terminal accesses the network through the extended common control channel according to the configuration information of the extended common control channel included in the received first system message.

The first system message received by the terminal may include a system message processing indication, for example, a Skip Indicator in table 2 may take a value that cannot be recognized by a normal terminal (a terminal other than the M2M terminal), when the terminal receives the first system message, if the terminal is the M2M terminal, the M2M terminal may recognize the first system message, and access to the network through the extended common control channel according to the configuration information of the extended common control channel, and if the terminal is the normal terminal, the normal terminal does not recognize the first system message, and access to the network through the CCCH.

In this embodiment, the step 304 is described in detail by taking an example that the extended common control channel is an MCCCH, the M2M terminal can recognize the first system message, and access the network through the MCCCH according to the MCCCH configuration information included in the first system message.

As shown in fig. 5, step 304 may include:

in step 3041, the M2M terminal determines its MCCCH GROUP (MCCCH GROUP).

In this embodiment, the M2M terminal determines its MCCCH group according to the following formula: MCCCH _ GROUP (0.. BS _ MCC _ CHANS-1) ((IMSI mod 1000) mod (BS _ MCC _ CHANS × N)) div N

Wherein, CCCH _ GROUP is the MCCCH GROUP where the M2M terminal is located, if the cell is configured with 8 MCCCH channels, there will be 8 MCCCH GROUPs, which are MCCCH _ GROUP (0) -MCCCH (7) respectively;

IMSI is International Mobile Subscriber Identity, International Mobile Subscriber Identity;

n-the number of paging blocks on one MCCCH (the number of paging blocks within 51 frames on one MCCCH) x BS _ MPA _ MFRMS.

In step 3042, the M2M terminal performs network access on the MCCCH corresponding to the MCCCH group determined in step 3041.

Specifically, the M2M terminal receives a system message, a paging message, and the like sent by the network side on the MCCCH corresponding to the MCCCH group determined in step 3041, and if the M2M terminal needs to initiate network Access, initiates network Access on a Random Access Channel (RACH) corresponding to the MCCCH where the terminal is located.

Optionally, to avoid the problem of network resource waste caused by idle of the extended common control channel configured for the cell, as shown in fig. 3, the method for accessing the terminal to the network provided by the embodiment of the present invention may further include:

in step 305, the base station controller determines whether the extended common control channel configured for the cell is in an idle state.

In this embodiment, the base station controller may determine whether the extended common control channel is in an idle state by two methods.

One method is to judge whether the extended common control channel is in an idle state according to the detection result of the base station controller on the extended common control channel.

In this embodiment, a detection timer may be preset on the base station controller, and the timing time of the detection timer may be set according to the actual system requirement, for example, may be set to 10 minutes, or 30 minutes, and the like. The base station controller detects whether the extended common control channel has data transmission within the timing time of the detection timer, and if the extended common control channel has no data transmission, the base station controller determines that the extended common control channel is in an idle state; if the extended common control channel has data transmission, the base station controller determines that the extended common control channel is in a non-idle state (an active state), clears the timing time of the detection timer, and restarts timing.

The other method is that an extended common control channel idle time is preset on a base station controller, and when the extended common control channel idle time is reached, the base station controller defaults the extended common control channel to be in an idle state; otherwise, the base station controller considers the extended common control channel as a non-idle state (active state).

In this embodiment, the extended common control channel idle time may be set according to the service characteristics of the terminal, for example: in the intelligent meter reading service, the M2M terminal generally completes network access within 30 minutes, and the idle time of the extended public control channel can be set to be 30 minutes or more after the base station controller configures the extended public control channel for the cell according to the service characteristics.

The two methods for the base station controller to determine whether the extended common control channel is in the idle state are only examples, and in the actual use process, the base station controller may also determine whether the extended common control channel is in the idle state by other methods, and here, an example is not given for each case.

Step 306, if the base station controller judges that the extended common control channel is in an idle state, the extended common control channel is recovered.

In this embodiment, the method for the base station controller to recover the extended common control channel may be: the base station controller switches the extended common control channel back to the idle channel as determined at step 3011 in fig. 4.

Specifically, if the extended common control channel is generated by TCH and/or PDTCH switching, the base station controller switches the extended common control channel back to TCH and/or PDTCH in step 306, so as to achieve the purpose of recovering the extended common control channel.

Step 307, the base station controller sends a second system message to the terminal, the second system message including information indicating that the cell does not have the extended common control channel.

Optionally, the second system message may further include a system message identification indication, where the system message identification indication is used to instruct the M2M terminal to identify the second system message, and instruct other terminals (common terminals, such as mobile phones or data cards, etc.) except the M2M terminal to skip (not identify) the second system message. Through the system message identification indication, the common terminal can directly skip the second system message without further deep analysis of the second system message, so that the information processing resource of the common terminal is saved, and the information processing speed of the common terminal is improved.

In this embodiment, the second system message may be obtained by expanding an existing system message, or may be a newly added system message.

When the second System message is a newly added System message, the second System message may be the System Information 21 described in step 302, and at this time, the MCCCH Channel Description is empty; indicator is 0 in SI 21Rest Octets, and BS _ MCC _ CHANS takes a value of 0;

the second System message may also be the System Information 22 described in step 302, where the MCCCH Channel Description and the MCCCH Mobile Allocation are null; indicator is 0 in SI 22 RestOctets, and BS _ MCC _ CHANS takes a value of 0.

Of course, the second system message may also be a system message in other forms in the actual using process, and details are not described here for each case.

And step 308, the terminal stops accessing the network through the extended common control channel according to the information which indicates that the cell does not have the extended common control channel and is included in the received second system message.

After the terminal determines its own extended common control channel group, the terminal receives the system message and the paging message sent by the network side on the extended common control channel corresponding to its own extended common control channel group, and in step 308, the terminal receives the second system message sent by the base station controller through the extended common control channel corresponding to its own extended common control channel group.

For example: and after determining the MCCCH group where the M2M terminal is located, receiving a second system message sent by the base station controller through the MCCCH corresponding to the MCCCH group.

After step 308, the terminal receives the system message again from the 0 timeslot of the C0 carrier, and accesses the network through the CCCH when the terminal needs to access the network.

It should be noted that the terminal access method provided in this embodiment may be applied not only to a Global System for Mobile Communications (GSM), but also to a network such as 3G or Long Term Evolution (LTE), and when the terminal access method is applied to other networks, the network side device is not limited to a base station controller, and may also be other network entities, for example: in the LTE network, the network side device is an evolved node b (eNodeB), which is not described in detail here.

The method for accessing the terminal to the network provided by the embodiment of the invention can configure the extended common control channel for the cell, and the terminal in the cell can access the network through the extended common control channel, thereby solving the problems that the number of the common control channels in the cell is limited, the common control channel is congested when the number of the terminals requesting to access the network at the same time is too large, and the terminal can not access the network normally even when the delay of accessing the network through the common control channel is higher. The terminal can access the network by expanding the common control channel, thereby relieving the access pressure of the common control channel, reducing the network access delay of the terminal and ensuring the normal access of the terminal.

As shown in fig. 6, an embodiment of the present invention further provides a network device, including:

a configuration module 601, configured to configure an extended common control channel for a cell;

a sending module 602, configured to send a first system message to a terminal in a cell, where the first system message includes information indicating that an extended common control channel exists in the cell and configuration information of the extended common control channel, and the first system message is used to indicate that the terminal accesses a network through the common control channel.

Further, as shown in fig. 7, the configuration module 601 may include:

a first configuration submodule 6011, configured to acquire a current idle channel of a cell, and convert the idle channel into an extended common control channel; and/or the presence of a gas in the gas,

a second configuration sub-module 6012 configured to add an extended common control channel.

Further, as shown in fig. 8, the network device may further include:

a recycling module 603, configured to recycle the extended common control channel if the extended common control channel is in an idle state;

the sending module 602 is further configured to send a second system message to the terminal, where the second system message includes information indicating that the extended common control channel does not exist in the cell.

The network device provided by the embodiment of the present invention may be specifically different devices according to different network environments of the application, for example: in the GSM network architecture, the network device provided in the embodiment of the present invention is specifically a base station controller, and in the LTE network architecture, the network device provided in the embodiment of the present invention is specifically an evolved base station, which is not described in detail herein.

It should be noted that, in an actual use process, the multiple modules divided by the network device according to the embodiments of the present invention shown in fig. 6 to fig. 8 may also be implemented by a module or a functional module having a similar function to the multiple modules, which is not described herein again.

The specific implementation method of the network device provided in the embodiment of the present invention may be referred to as the method for accessing the terminal to the network provided in the embodiment of the present invention, and is not described herein again.

The network equipment provided by the embodiment of the invention can configure the extended public control channel for the cell and send the configuration information of the extended public controller to the terminal through the first system message, so that the terminal in the cell can access the network through the extended public control channel, thereby reducing the access delay of a large number of terminals in the cell accessing the network simultaneously, improving the real-time property of the terminal accessing the network and ensuring the normal access of the terminal; further, the network device provided by the embodiment of the present invention can recycle the extended common control channel when the extended common control channel is idle, thereby avoiding the problem of network resource waste caused by resource idle.

As shown in fig. 9, an embodiment of the present invention further provides a terminal, including:

a receiving module 901, configured to receive a first system message sent by a network side, where the first system message includes information indicating that an extended common control channel exists in a cell and configuration information of the extended common control channel;

a determining module 902, configured to determine that an extended common control channel exists in a cell according to information indicating that the extended common control channel exists in the cell;

an access module 903, configured to access a network through the extended common control channel according to the configuration information of the extended common control channel.

Further, as shown in fig. 10, in the terminal provided in the embodiment of the present invention, the receiving module 901 is further configured to receive a second system message sent by the network side, where the second system message includes information indicating that no extended common control channel exists in the cell;

at this time, the terminal provided in the embodiment of the present invention may further include: a processing module 904 configured to stop accessing the network through the extended common control channel according to the information indicating that the extended common control channel does not exist in the cell.

It should be noted that, in an actual use process, the multiple modules divided by the terminal according to the embodiment of the present invention shown in fig. 9 and fig. 10 may also be implemented by a module or a functional module having a similar function to the multiple modules, and details are not described here.

The specific implementation method of the terminal provided by the embodiment of the present invention may be referred to as the method for accessing the terminal to the network provided by the embodiment of the present invention, and details are not described here.

The terminal provided by the embodiment of the invention can access the network through the extended public control channel configured at the network side, thereby reducing the access delay of a large number of terminals in a cell for simultaneously accessing the network, improving the real-time property of the terminal for accessing the network and ensuring the normal access of the terminal.

An embodiment of the present invention further provides a communication system, including the terminal as described in fig. 9 and 10 above, and the network device as described in fig. 6 to 8.

The specific implementation method of the communication system provided by the embodiment of the present invention may be referred to as the method for accessing the terminal to the network provided by the embodiment of the present invention, and is not described herein again.

In the communication system provided by the embodiment of the invention, the network equipment can configure the extended common control channel for the cell and send the configuration information of the extended common controller to the terminal through the first system message, so that the terminal in the cell can access the network through the extended common control channel, thereby reducing the access delay of a large number of terminals in the cell accessing the network simultaneously, improving the real-time property of the terminal accessing the network and ensuring the normal access of the terminal; further, the network device can recycle the extended common control channel when the extended common control channel is idle, thereby avoiding the problem of network resource waste caused by resource idle.

The method, the device and the system for accessing the terminal to the network provided by the embodiment of the invention can be applied to a wireless communication network, and are particularly suitable for a scene that a large number of M2M terminals are simultaneously accessed to the network.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within 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. A method for a terminal to access a network, the method comprising:

configuring an extended common control channel for a cell;

and sending a first system message to a terminal in the cell, wherein the first system message comprises information indicating that the cell has an extended common control channel and configuration information of the extended common control channel, and the first system message is used for indicating the terminal to access a network through the extended common control channel.

2. The method of claim 1,

if the common control channel of the cell is congested, executing the configuration of the extended common control channel for the cell; or,

and if the timer reaches the preset extended common control channel configuration time, executing the configuration of the extended common control channel for the cell.

3. The method of claim 1 or 2, wherein the configuring the extended common control channel for the cell comprises:

acquiring a current idle channel of a cell, and converting the idle channel into an extended common control channel; and/or adding an extended common control channel.

4. The method of claim 3, wherein the idle channel comprises a traffic channel and/or a packet data traffic channel.

5. The method of claim 1, wherein the first system message further comprises a system message handling indication instructing one of the terminals to handle the first system message.

6. The method of claim 1 or 5, wherein the configuration information of the extended common control channel comprises:

the number of the extended common control channels and the number of the wireless frequency point and the number of the time slot where each extended common control channel is located; or,

the number of the extended common control channels and the frequency hopping information description of the extended common control channels.

7. The method of claim 1, further comprising:

if the extended common control channel is in an idle state, recovering the extended common control channel;

and sending a second system message to the terminal, wherein the second system message comprises information indicating that the cell has no extended common control channel.

8. A method for a terminal to access a network, the method comprising:

receiving a first system message sent by a network side, wherein the first system message comprises information indicating that a cell has an extended common control channel and configuration information of the extended common control channel;

determining that an extended common control channel exists in the cell according to the information indicating that the extended common control channel exists in the cell;

and accessing the network through the extended common control channel according to the configuration information of the extended common control channel.

9. The method of claim 8,

the first system message also comprises a system message processing instruction, the information of the existence of the extended common control channel in the cell according to the indication is executed according to the system message identification instruction, and the existence of the extended common control channel in the cell is determined; and accessing the network through the extended common control channel according to the configuration information of the extended common control channel.

10. The method according to claim 8 or 9, characterized in that the method further comprises:

receiving a second system message sent by a network side, wherein the second system message comprises information indicating that no extended common control channel exists in a cell;

and stopping accessing the network through the extended common control channel according to the information indicating that the extended common control channel does not exist in the cell.

11. A network device, comprising:

12. The network device of claim 11, wherein the configuration module comprises:

the first configuration submodule is used for acquiring the current idle channel of a cell and converting the idle channel into an extended common control channel; and/or the presence of a gas in the gas,

and the second configuration submodule is used for adding the extended common control channel.

13. Network device according to claim 11 or 12, characterized in that it further comprises:

a recovery module, configured to recover the extended common control channel if the extended common control channel is in an idle state;

the sending module is configured to send a second system message to the terminal, where the second system message includes information indicating that no extended common control channel exists in the cell.

14. A terminal, comprising:

15. The terminal of claim 14,

the receiving module is configured to receive a second system message sent by a network side, where the second system message includes information indicating that an extended common control channel does not exist in a cell;

at this time, the terminal further includes: and the processing module is used for stopping accessing the network through the extended common control channel according to the information that the extended common control channel does not exist in the indicated cell.

16. A communication system comprising a terminal according to claims 14 and 15 and a network device according to any of claims 11 to 13.