CN101835268B - Method and device for terminal to select a CDMA channel to reside on - Google Patents

Abstract

The invention provides a method and a device for terminals to select resident CDMA channels. CDMA channels configured on a base station is divided into at least two CDMA channel groups, wherein each CDMA channel group is used for supplying service for terminals with different priority levels, and the base station is used for determining that all the CDMA channels of a paging channel or a broadcast control channel are configured in each CDMA channel group. The method for terminals to select resident CDMA channels comprises the following step of: broadcasting a channel list message in the coverage area of the base station by the base station through all the CDMA channels of the paging channel or the broadcast control channel configured in each CDMA channel group, wherein the channel list message comprises channel marks of all the CDMA channels in each CDMA channel group, which are configured with the paging channel or the broadcast control channel, so that the terminals with different priority levels can select the resident CDMA channels in the CDMA channel groups.

Description

Method and device for terminal to select a CDMA channel to reside on

technical field

The embodiment of the present invention relates to the field of wireless communication technologies, and in particular to a method and device for a terminal to select a CDMA channel to camp on.

Background technique

In the Code-Division Multiple Access (CDMA) cellular system, according to the different functions of the information transmitted by the CDMA channel, it can be divided into a traffic channel and a control channel. For the CDMA IS-95 system, the control channels configured by the base station include the pilot channel, the paging channel (forward) and the access channel (reverse); for the CDMA2000 1X system, the control channels include the pilot channel, the paging channel ( Forward), Access Channel (Reverse), Broadcast Control Channel (Forward), Common Control Channel (Forward), Enhanced Access Channel (Reverse), and Quick Paging Channel (Forward).

According to the CDMA system version supported by the base station, the base station can send a CDMA Channel List Message (CDMA Channel List Message) or an Extended CDMA Channel List Message (Extended CDMA Channel List Message) on the paging channel or broadcast control channel.

Take the CDMA channel list message sent by the base station through the paging channel as an example. When the base station broadcasts the CDMA channel list message to the coverage area through the paging channel, the CDMA channel list message lists all the CDMA channel identifiers configured with the paging channel; The CDMA channel list message sent by the base station will be automatically searched; the terminal determines the CDMA channel to reside on based on the CDMA channel list message, the terminal's International Mobile Subscriber Identification Number (IMSI) and the specified hash function ; After determining the CDMA channel to camp on, the terminal will camp on the CDMA channel to monitor the paging of the base station; when the base station is paging the terminal, it will also determine the location of the terminal based on the CDMA channel list message, the terminal's IMSI and the specified hash function. The reserved CDMA channel is used to page the terminal through the CDMA channel.

In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the hash values calculated by different terminals according to the CDMA channel list message broadcast by the base station may be the same, resulting in multiple terminals with equal probability Compete to use the same CDMA channel, so different access services cannot be provided for terminals with different priorities.

Contents of the invention

Embodiments of the present invention provide a method and device for a terminal to select a CDMA channel to camp on, which realizes the purpose of providing different services for terminals with different priorities.

An embodiment of the present invention provides a method for a terminal to select a CDMA channel to reside on. The CDMA channel configured on the base station is divided into at least two CDMA channel groups, and each of the CDMA channel groups is used to provide services for terminals with different priorities. The base station determines all CDMA channels configured with paging channels or broadcast control channels in each of the CDMA channel groups, and the method includes:

The base station broadcasts a channel list message in the coverage area of the base station through all CDMA channels configured with paging channels or broadcast control channels in each of the CDMA channel groups; the channel list message includes configurations in the CDMA channel group There are channel identifiers of all CDMA channels of the paging channel or the broadcast control channel, so that the terminals with different priorities select the CDMA channel to camp on in the CDMA channel group.

An embodiment of the present invention provides a device for a terminal to select a camped CDMA channel, including:

A channel group division module, configured to divide all CDMA channels configured on the base station into at least two CDMA channel groups; each of the CDMA channel groups is used to provide services for different priority terminals;

A channel determination module, configured to determine all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group;

The list information sending module is used to broadcast a channel list message in the coverage area of the base station through all CDMA channels configured with paging channels or broadcast control channels in each of the CDMA channel groups; the channel list message includes the CDMA The channel identifiers of all the CDMA channels of the paging channel or the broadcast control channel are configured in the channel group, so that the terminals with different priorities select the CDMA channel to camp on in the CDMA channel group.

In the method and device for a terminal to select a camped CDMA channel provided by the embodiments of the present invention, the CDMA channel configured on the base station is divided into at least two CDMA channel groups, and different CDMA channel groups provide services for terminals with different priorities. The base station broadcasts the channel list message on all the CDMA channels in which the broadcast control channel or the paging channel is allocated in each CDMA channel group. For a CDMS channel group, the channel list message only includes the channel identification of the CDMA channel configured with the broadcast control channel or the paging channel in the CDMA channel group, so the terminal only selects the CDMA channel to reside in the CDMA channel group, thereby , different terminals in the coverage area of the base station can be distributed and reside in different CDMA channel groups. Since the base station can plan different loads for different CDMA channel groups, the loads of the CDMA channels of different groups do not affect each other, so that different services are provided for terminals with different priorities.

Description of drawings

FIG. 1 is a flow chart of a method for a terminal to select a CDMA channel to camp on provided in the first embodiment of the present invention;

FIG. 2a is a flow chart of a method for a terminal to select a camped CDMA channel according to a second embodiment of the present invention;

FIG. 2b is a schematic diagram of channel division for a terminal to select a camped CDMA channel according to a second embodiment of the present invention;

FIG. 3a is a flow chart of a method for a terminal to select a camped CDMA channel according to a third embodiment of the present invention;

FIG. 3b is a signaling interaction diagram of a method for a terminal to select a camped CDMA channel according to a third embodiment of the present invention;

FIG. 4 is a flow chart of a method for a terminal to select a CDMA channel to camp on provided by a fourth embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a device for a terminal to select a camped CDMA channel according to a fifth embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a device for a terminal to select a camped CDMA channel according to a sixth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an apparatus for a terminal to select a camped CDMA channel according to a seventh embodiment of the present invention.

Detailed ways

The technical solutions of the embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

FIG. 1 is a flowchart of a method for a terminal to select a camped CDMA channel provided by the first embodiment of the present invention. This embodiment describes a method for a terminal to select a camped CDMA channel from the perspective of a base station.

In this embodiment, the CDMA channels configured on the base station are divided into at least two CDMA channel groups, and each CDMA channel group is used to provide services for terminals with different priorities. That is, different priority terminals correspond to different CDMA channel groups.

11: The base station determines all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group.

For the CDMA IS-95 system, the base station needs to broadcast the channel list message to the coverage area on the CDMA channel configured with the paging channel. Therefore, before broadcasting the channel list message on each CDMA channel group, the base station needs to determine all the CDMA channels configured with the paging channel in a certain CDMA channel group.

For the CDMA2000 1X system, the base station needs to broadcast the channel list message to the coverage area on the CDMA channel configured with the broadcast control channel. Therefore, before broadcasting the channel list message on each CDMA channel group, the base station needs to determine all the CDMA channels configured with the paging channel in a certain CDMA channel group.

12: The base station broadcasts channel list messages in the coverage area of the base station through all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group; the channel list message includes paging channels or broadcast control channels configured in CDMA channel groups The channel IDs of all CDMA channels.

For broadcasting in a CDMS channel group, the channel list message only includes channel identifiers of CDMA channels configured with broadcast control channels or paging channels in the CDMA channel group.

After the terminal receives the channel list message broadcast by the base station, according to the hash algorithm and the IMSI of the terminal, among the channel identifiers of the CDMA channels included in the channel list message, select the CDMA channel to reside on, so as to reside on the CDMA channel and receive the base station service provided. When the terminal selects the CDMA channel to camp on, it only performs hash hashing on the CDMA channels included in the channel list message, so that terminals with different priorities camp on different CDMA channel groups.

In this embodiment, the CDMA channels configured on the base station are divided into at least two CDMA channel groups, and different CDMA channel groups provide services for terminals with different priorities. The base station broadcasts the channel list message on all the CDMA channels in which the broadcast control channel or the paging channel is allocated in each CDMA channel group. For a CDMS channel group, the channel list message only includes the channel identification of the CDMA channel configured with the broadcast control channel or the paging channel in the CDMA channel group, so the terminal only selects the CDMA channel to reside in the CDMA channel group, thereby , different terminals in the coverage area of the base station can be distributed and reside in different CDMA channel groups. Since the base station can plan different loads for different CDMA channel groups, the loads of the CDMA channels of different groups do not affect each other, so that different services are provided for terminals with different priorities.

Fig. 2a is a flowchart of a method for a terminal to select a camped CDMA channel according to the second embodiment of the present invention. This embodiment illustrates the CDMA control channel allocation method from the perspective of the base station. Fig. 2b is a schematic diagram of medium channel division for a terminal to select a camped CDMA channel according to the second embodiment of the present invention. As shown in Fig. 2b, all CDMA channels configured on the base station in this embodiment are divided into three CDMA channel groups. As shown in Figure 2a, this embodiment includes:

21: Divide the CDMA channels configured on the base station into three CDMA channel groups.

The base station adopts multi-carrier coverage mode, that is, the base station is configured with multiple CDMA Channels (also called CDMA channels). According to actual application requirements, all the CDMA channels configured on the base station are divided into several CDMA channel groups, and a group identifier can be set for each CDMA channel group.

As shown in Figure 2b, multiple CDMA channel groups are set on the base station: such as Group A, Group B, Group C, etc., and each CDMA channel group is divided into one or more CDMA channels. For example, GroupA divides a CDMA channel, and Group B Divide two CDMA channels, Group C divides three CDMA channels.

22: The base station determines the CDMA channel group corresponding to each terminal in the coverage area;

After the CDMA channels are grouped, a CDMA channel group is determined for each terminal. In system operation, the specific method of determining a CDMA channel group for each terminal can be: according to the user needs of each terminal, when the terminal user opens an account, assign a priority to each terminal, which is called "terminal priority ", and establish "the correspondence between the terminal priority and the IMSI of the terminal" and "the correspondence table between the terminal priority and the CDMA channel group" in the home location register (Home Location Register, hereinafter referred to as: HLR). During specific implementation, the mobile switching center (Mobile Switching Center, hereinafter referred to as: MSC) can notify the base station of the terminal priority and the "correspondence table between the terminal priority and the CDMA channel group" through a message. As shown in Table 1, the "correspondence table between terminal priorities and CDMA channel groups" includes the correspondence between terminal priorities and CDMA channel groups. When dividing a CDMA channel group for a terminal, the base station determines the CDMA channel group corresponding to the terminal according to the priority of the terminal and Table 1. As shown in Table 1: if the terminal priority is 2, the terminal should reside in Group C; if the terminal priority is 12, the terminal should reside in Group A.

Table 1 Correspondence table between terminal priority and CDMA channel group

terminal priority CDMA channel group 12～16 Group A 8～11 Group B 1～7 Group C

When dividing CDMA channel groups for terminals, different load planning can be performed for different CDMA channel groups. For example, high-priority terminals reside in CDMA channel group Group B, and the number of terminals allocated to Group B is relatively small, so that the load of Group B is the lowest, thereby ensuring that terminals with high priority enjoy abundant resources; correspondingly, the number of terminals with priority All low-priority terminals reside in Group C, and the number of terminals in Group C is relatively large, resulting in fewer control channel resources for each low-priority terminal. For the CDMA IS95 system, the control channels are the paging channel and the access channel; for the CDMA 2000 1X system, the control channels are all channels except the pilot channel and the traffic channel.

23: Determine all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group;

When the base station broadcasts the channel list message to the coverage area, it needs to determine all the CDMA channels configured with the paging channel (or, configured with the broadcast control channel and the forward common control channel), so as to broadcast the channel list message to the coverage area on these CDMA channels .

24: Broadcast the channel list message to the coverage area of the base station through all the CDMA channels configured with the paging channel or the broadcast control channel in each CDMA channel group.

The channel list message includes: the channel identifiers of the CDMA channels configured with paging channels in the CDMA channel group. Wherein, the channel list message may be a CDMA Channel List Message or an Extended CDMA Channel List Message.

The base station sends a CDMA Channel List Message or an Extended CDMA Channel List Message in units of CDMA Channel groups. For each CDMA channel group, the base station sends a CDMA ChannelList Message or an Extended CDMA Channel List Message through all CDMA channels configured with paging channels in the CDMA channel. details as follows:

When the base station broadcasts the CDMA Channel List Message to the coverage area: it is necessary to list the CDMA Channel group configured with the paging channel (or, configured with the broadcast control channel and the forward common control channel) in the CDMA_FREQ field of the message The CDMA identifier of the CDMA channel. After the terminal receives the CDMA Channel List Message or Extended CDMA Channel ListMessage, it determines the CDMA channel it resides on through the specified hash function according to the channel identifier listed in the CDMA Channel List Message or Extended CDMA Channel ListMessage and the terminal's IMSI_S. When the terminal determines the CDMA channel to camp on, it only performs hashing on the CDMA channels included in the channel list message, so that the terminal resides in the CDMA channel group allocated by the base station for the terminal.

As shown in Figure 2b, the base station is configured with multiple CDMA Channels, and the CDMA Channel planned for Group A has only one CDMA Channel 1. CDMA Channel 1 must be configured with a paging channel, or configured with a broadcast control channel and a forward common control channel. When CDMA Channel 1 is configured with a paging channel, the base station broadcasts a CDMA Channel List Message message to all terminals planned for Group A on the paging channel of CDMA Channel 1. The CDMA_FREQ field of the message only contains the corresponding CDMA Channel 1 CDMA channel identifier, such as CDMA channelnumber; when CDMA Channel 1 is configured with a broadcast control channel and a forward common control channel, the base station sends an Extended CDMA Channel List Message message on CDMA Channel 1, and the CDMA_FREQ field of the message only contains the corresponding CDMA Channel 1 CDMA channel identification, such as CDMA channel number.

As shown in Figure 2b, there are only two CDMA Channels planned for Group B: CDMA Channel 2 and CDMA Channel 3.

If only the paging channel is configured on CDMA Channel 2, when the base station sends a CDMA Channel List Message on the paging channel of CDMA Channel 2, the CDMA_FREQ field of the CDMA Channel ListMessage only contains the CDMA channel number corresponding to CDMA Channel 2. Correspondingly, if only the paging channel is configured on CDMA Channel 3, when the base station sends a CDMA Channel List Message on the paging channel of CDMA Channel 3, the CDMA_FREQ field of the CDMA Channel List Message only contains the CDMA channel number corresponding to CDMA Channel 3 .

If paging channels are configured on both CDMA Channel 2 and CDMA Channel 3, the base station sends the CDMA Channel List Message on the paging channel of CDMA Channel 2 and the CDMA Channel List Message on the paging channel of CDMA Channel 3, The CDMA_FREQ field of the CDMAChannel List Message will contain the CDMA Channel 2 identifier and the CDMA Channel 3 identifier.

If the broadcast control channel and the forward common control channel are only configured on the CDMA Channel 2 channel, when the base station sends the Extended CDMA Channel List Message on the CDMA Channel 2, the CDMA_FREQ field of the message only contains the CDMAchannel number corresponding to the CDMA Channel 2; If the paging channel is configured only on the CDMA Channel 3 channel, when the base station sends the Extended CDMA Channel ListMessage message on the CDMA Channel 3 paging channel, the CDMA_FREQ field of the message only contains the CDMA channel number corresponding to the CDMA Channel 3.

If the paging channel is configured on CDMA Channel 2 and CDMA Channel 3, or the broadcast control channel and forward common control channel are configured, when the base station sends the Extended CDMA Channel List Message message on CDMA Channel 2 and CDMA Channel 3, the message The CDMA_FREQ field will contain the CDMAchannel number corresponding to CDMA Channel 2 and CDMA Channel 3.

As shown in Figure 2b, there are only two CDMA Channels planned for Group C: CDMA Channel 4 and CDMA Channel 5.

If only the paging channel is configured on the CDMA Channel 5 channel, when the base station sends the CDMA Channel List Message message on the paging channel of the CDMA Channel 5, the CDMA_FREQ field of the message only contains the CDMA channel number corresponding to the CDMA Channel 5; If paging channels are configured on CDMA Channel 4 and CDMA Channel 5, when the base station sends a CDMA Channel List Message message on the paging channels of CDMA Channel 4 and CDMA Channel 5, the CDMA_FREQ field of the message will contain the corresponding CDMA Channel 4 and CDMA Channel 5 The CDMA channel number.

If only the paging channel, or broadcast control channel and forward common control channel are configured on the CDMA Channel 5 channel, when the base station sends the Extended CDMAChannel List Message message on the CDMA Channel 5, the CDMA_FREQ field of the message only contains the corresponding CDMA channel number of CDMA Channel 5; if a paging channel is configured on CDMA Channel 4 and CDMA Channel 5, or a broadcast control channel and forward common control channel are configured, the base station sends Extended CDMA Channel on CDMA Channel 4 and CDMA Channel 5 When receiving a ListMessage message, the CDMA_FREQ field of the message will contain the CDMA channel number corresponding to CDMA Channel 4 and CDMA Channel 5.

When paging a terminal in a certain CDMA channel group, the base station determines the CDMA channel the terminal resides on based on the channel identifier in the channel list message broadcast by the CDMA channel group and the terminal's IMSI through a specified hash function. For example, when paging a terminal in Group B, the base station learns that Group B includes two channels, CDMA channel 2 and CDMA channel 3, according to the channel identifier in the channel list message sent on Group B. Then the base station only performs hash operation in CDMA channel 2 and CDMA channel 3 to determine the CDMA channel where the terminal resides. The terminal is then paged on the CDMA channel.

In this embodiment, the loads of different groups of CDMA channels do not affect each other, and different load planning can be carried out for different CDMA channel groups, such as making high-priority terminals reside in CDMA channel groups with fewer The terminal resides in a CDMA channel group with a large number of terminals. Thus, terminals with different priorities can share resources of different CDMA channel groups, and the system can provide terminals with different priorities with different qualities of service.

Fig. 3a is a flowchart of a method for a terminal to select a camped CDMA channel according to the third embodiment of the present invention, and Fig. 3b is a signaling interaction diagram of a method for a terminal to select a camped CDMA channel according to the third embodiment of the present invention. Because the base station broadcasts channel list information to the coverage area on each channel group, the channel list information broadcast by the base station that is automatically searched after the terminal is turned on may not be the channel list sent by the base station for its CDMA channel group. information. Therefore, according to the channel list message, the CDMA channel on which the terminal resides does not necessarily belong to the CDMA channel group planned by the base station. Therefore, the base station needs to instruct it to transfer to a certain channel in the CDMA channel group planned for it.

As shown in Figure 3a and Figure 3b, on the basis of the first embodiment, this embodiment also includes:

31: The base station receives the registration request sent by the terminal;

After the terminal is turned on and accesses the CDMA system for the first time, it sends a registration request to the base station through the CDMA channel determined according to the channel list message, for example, sends a Registration Message to the base station. Wherein, the registration request carries the IMSI of the terminal. According to the registration request, the base station can obtain the CDMA channel where the terminal is currently camped on.

32: The base station determines the target CDMA channel group corresponding to the terminal according to the registration request, terminal priority information, and the correspondence table between the terminal priority and the CDMA channel group, and determines the terminal should camp in the target CDMA channel group corresponding to the terminal according to the hash algorithm. The reserved target CDMA channel.

As shown in FIG. 3b, the base station receives a registration request, such as RegistrationMessage, sent by the terminal. Afterwards, the base station sends a location updating request, such as a Location Updating Request message, to the MSC. Afterwards, the base station receives the acceptance location update sent by the MSC according to the location update request, and accepting the location update can be a Location Updating Accept message.

The base station obtains "correspondence between terminal priority and IMSI of terminal" and "correspondence table between terminal priority and CDMA channel group" from HLR through MSC. Specifically, the base station can obtain the "correspondence between the terminal priority and the IMSI of the terminal" and "the correspondence table between the terminal priority and the CDMA channel group" from the Location Updating Accept returned by the MSC. The base station queries the "correspondence relationship between terminal priority and terminal IMSI" according to the terminal's IMSI, and acquires the terminal priority information. Then, according to the terminal priority information, query the "correspondence table between terminal priority and CDMA channel group" to determine the target CDMA channel group planned for the terminal. Afterwards, the target CDMA channel that the terminal should camp on is determined in the target CDMA channel group corresponding to the terminal according to the hash algorithm.

In the above correspondence table between terminal priority and CDMA channel group, the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the high-priority terminal is more than that owned by the target CDMA channel group corresponding to the low-priority terminal. The number of paging channels or broadcast control channels; and the number of terminals in the target CDMA channel group corresponding to the high-priority terminal is less than the number of terminals in the target CDMA channel group corresponding to the low-priority terminal.

33: When the CDMA channel that the terminal is currently camping on is inconsistent with the target CDMA channel, the base station sends a service redirection message to the terminal. The service redirection message is used to instruct the terminal to transfer from the currently camped CDMA channel to the target CDMA channel that the terminal should camp on Channel resides.

When the base station determines that the CDMA channel the terminal is currently camping on is inconsistent with the target CDMA channel, it can send a Service Redirection Message to the terminal to instruct the terminal to transfer to the target CDMA channel in the required CDMA channel group, and re-register the request. If the terminal performs access registration on the required target CDMA channel, the base station will return a registration success message, such as Registration Accepted Order, to the terminal to complete the terminal registration process.

In this embodiment, the base station determines, according to the registration request of the terminal, that the terminal does not camp on the required target CDMA channel for the first time after starting up, and sends a service redirection message to the terminal to transfer to the target CDMA channel. This embodiment prompts the terminal to reside in the required CDMA channel group to receive the service provided by the base station, thereby implementing different load planning for different CDMA channels.

FIG. 4 is a flowchart of a method for a terminal to select a camped CDMA channel according to a fourth embodiment of the present invention. Through the method of the third embodiment, the terminal has been camped on the target channel to monitor the paging of the base station. Therefore, this embodiment mainly describes the method for the base station to determine the CDMA channel the terminal camps on and paging the terminal.

41: The base station receives the paging request message sent by the mobile service switching center;

42: The base station acquires the priority information of the called terminal and the correspondence table between the terminal priority and the CDMA channel group according to the paging request message.

The base station obtains the priority information of the paged terminal and the correspondence table between the terminal priority and the CDMA channel group through the paging message of the MSC.

43: The base station determines the target CDMA channel group corresponding to the calling terminal according to the acquired priority information of the called terminal and the correspondence table between the terminal priority and the CDMA channel group, and the base station determines the camping of the called terminal in the target CDMA group according to the hash algorithm CDMA channel.

According to the terminal priority information, the base station queries the "table of correspondence between terminal priority and CDMA channel group" to determine the target CDMA channel group corresponding to the terminal. Afterwards, the target CDMA channel that the terminal should camp on is determined in the target CDMA channel group corresponding to the terminal according to the hash algorithm.

44: The base station pages the called terminal through the paging channel or the broadcast control channel of the CDMA channel where the called terminal resides.

After determining the CDMA channel where the terminal is camped on, the base station pages the terminal through the paging channel or the broadcast control channel of the CDMA channel where the terminal is camped.

In this embodiment, when the terminal camps on the target CDMA channel, the base station directly pages the terminal on the paging channel or broadcast control channel where the terminal camps on the target CDMA channel, thereby providing different services for terminals with different priorities.

FIG. 5 is a schematic structural diagram of an apparatus for a terminal to select a camped CDMA channel according to a fifth embodiment of the present invention. As shown in FIG. 5 , this embodiment includes: a channel group division module 51 , a channel determination module 52 and a list information sending module 53 .

The channel group division module 51 is configured to divide all CDMA channels configured on the base station into at least two CDMA channel groups; each CDMA channel group is used to provide services for terminals with different priorities.

The channel determination module 52 is configured to determine all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group.

The list information sending module 53 is used to broadcast channel list messages in the base station coverage area through all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group; the channel list message includes paging channels configured in the CDMA channel groups. The channel identifiers of all CDMA channels of the channel or the broadcast control channel, so that terminals with different priorities can select the CDMA channel to camp on in the CDMA channel group.

Specifically, the channel group division module 51 divides all CDMA channels configured on the base station into at least two CDMA channel groups; each CDMA channel group is used to provide services for terminals with different priorities. The channel determination module 52 determines all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group divided by the channel group division module 51 . The list information sending module 53 broadcasts the channel list message in the coverage area of the base station through all the CDMA channels configured with the paging channel or the broadcast control channel in each CDMA channel group determined by the channel determining module 52 . The channel list message includes channel identifiers of all CDMA channels configured with paging channels or broadcast control channels within the CDMA channel group. The terminal selects the CDMA channel to camp on according to the CDMA channel identifier in the channel list message.

For the working mechanism of the above modules, refer to the descriptions in the first embodiment and the second embodiment, and will not be repeated here.

In this embodiment, the CDMA channels configured on the base station are divided into at least two CDMA channel groups by the channel group division module, and different CDMA channel groups provide services for terminals with different priorities. The list information sending module broadcasts the channel list message on all CDMA channels configured with broadcast control channels or paging channels in each CDMA channel group. For a CDMS channel group, the channel list message only includes the channel identification of the CDMA channel configured with the broadcast control channel or the paging channel in the CDMA channel group, so the terminal only selects the CDMA channel to reside in the CDMA channel group, thereby , different terminals in the coverage area of the base station can be distributed and reside in different CDMA channel groups. Since the base station can plan different loads for different CDMA channel groups, the loads of the CDMA channels of different groups do not affect each other, so that different services are provided for terminals with different priorities.

FIG. 6 is a schematic structural diagram of an apparatus for a terminal to select a camped CDMA channel according to a sixth embodiment of the present invention. On the basis of the fifth embodiment, this embodiment also includes:

A registration request receiving module 54, configured to receive a registration request message sent by the terminal;

The first resident channel determination module 55 is used to determine the target CDMA channel group corresponding to the terminal according to the terminal priority information and the corresponding table of the terminal priority and the CDMA channel group, and determine the target CDMA channel group corresponding to the terminal according to the hash algorithm Determine the target CDMA channel on which the terminal should camp.

Among them, in the correspondence table between terminal priority and CDMA channel group, the allocation strategy of the channel group corresponding to the terminal can be: the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the high priority terminal is more than that of the low priority terminal. The number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the priority terminal; and, the number of terminals in the target CDMA channel group corresponding to the high priority terminal is less than that of the target CDMA channel group corresponding to the low priority terminal The number of terminals in the CDMA channel group.

A service redirection message sending module 56, configured to send a service redirection message to the terminal when the CDMA channel currently camped by the terminal is inconsistent with the target CDMA channel, and the service redirection message is used to instruct the terminal to transfer from the currently camped CDMA channel To camp on the target CDMA channel where the terminal should camp.

Further, as shown in FIG. 6, this embodiment further includes: a first obtaining module 57, configured to obtain terminal priority information and a correspondence table between terminal priority and CDMA channel group from the home location register.

For the working mechanism of each module in this embodiment, refer to the description in the third embodiment, which will not be repeated here.

In this embodiment, when the camping channel determination module determines that the terminal does not camp on the required target CDMA channel for the first time after booting up according to the registration request of the terminal, the service redirection message sending module sends a service redirection message to the terminal to make it transfer to Target CDMA channel. This embodiment prompts the terminal to reside in the required CDMA channel group to receive the service provided by the base station, thereby implementing different load planning for different CDMA channels.

FIG. 7 is a schematic structural diagram of an apparatus for a terminal to select a camped CDMA channel according to a seventh embodiment of the present invention. On the basis of the sixth embodiment, this embodiment also includes:

The paging request receiving module 58 is configured to receive the paging request message sent by the mobile services switching center;

The second obtaining module 510 is used to obtain the corresponding table of the called terminal priority information and the terminal priority and the CDMA channel group from the home location register according to the paging request message;

The second camping channel determination module 511 is used to determine the target CDMA channel group corresponding to the calling terminal according to the obtained corresponding table of the called terminal priority information and the terminal priority and the CDMA channel group. The Greek algorithm determines the CDMA channel where the called terminal resides; in the correspondence table between the terminal priority and the CDMA channel group, the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the high-priority terminal is more than that of the low-priority terminal. The number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the priority terminal; and, the number of terminals in the target CDMA channel group corresponding to the high priority terminal is less than that of the target CDMA channel group corresponding to the low priority terminal The number of terminals owned in the CDMA channel group;

The paging module 59 is configured to page the called terminal through the paging channel or the broadcast control channel of the CDMA channel where the called terminal resides.

For the working mechanism of each module in this embodiment, refer to the description in the fourth embodiment, which will not be repeated here.

In this embodiment, when the terminal camps on the target CDMA channel, the paging module directly pages the terminal on the paging channel or broadcast control channel where the terminal camps on the target CDMA channel, thereby providing different services for terminals with different priorities.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A method for a terminal to select a resident CDMA channel, characterized in that the CDMA channel configured on the base station is divided into at least two CDMA channel groups, and each of the CDMA channel groups is used to provide services for different priority terminals, The base station determines the CDMA channel group corresponding to each terminal in the coverage area, and performs different load planning for different CDMA channel groups, and the base station determines all CDMA channel groups configured with paging channels or broadcast control channels in each of the CDMA channel groups. channel, the method comprising: The base station broadcasts a channel list message in the coverage area of the base station through all CDMA channels configured with paging channels or broadcast control channels in each of the CDMA channel groups; the channel list message includes configurations in the CDMA channel group There are channel identifiers of all CDMA channels of the paging channel or the broadcast control channel, so that the terminals with different priorities select the CDMA channel to camp on in the CDMA channel group. 2. The method for selecting a CDMA channel for a terminal to reside on according to claim 1, further comprising: The base station receives the registration request message sent by the terminal; The base station determines the target CDMA channel group corresponding to the terminal according to the terminal priority information and the correspondence table between the terminal priority and the CDMA channel group, and determines the target CDMA channel group corresponding to the terminal according to a hash algorithm. The target CDMA channel where the terminal should camp; When the CDMA channel on which the terminal is currently camped is inconsistent with the target CDMA channel, the base station sends a service redirection message to the terminal, and the service redirection message is used to instruct the terminal to start from the current camping The CDMA channel is transferred to the target CDMA channel where the terminal should reside. 3. The method for selecting a CDMA channel for a terminal to reside on according to claim 2, further comprising: The terminal priority information and the correspondence table between the terminal priority and the CDMA channel group are acquired by the base station from the home location register of the terminal. 4. The method for a terminal to select a CDMA channel to reside on according to claim 1, further comprising: The base station receives the paging request message sent by the mobile services switching center; The base station obtains the called terminal priority information and the correspondence table between the terminal priority and CDMA channel group according to the paging request message; The base station determines the target CDMA channel group corresponding to the calling terminal according to the acquired priority information of the called terminal and the correspondence table between the terminal priority and the CDMA channel group, and the base station determines the target CDMA channel group corresponding to the calling terminal according to the hash The Greek algorithm determines the CDMA channel where the called terminal resides; The base station pages the called terminal through the paging channel or the broadcast control channel of the CDMA channel where the called terminal is camped on. 5. The method for a terminal to select a CDMA channel to reside on according to claim 4, further comprising: The called terminal priority information and the correspondence table between the terminal priority and the CDMA channel group are acquired by the base station from the terminal's home location register. 6. The method for a terminal to select a CDMA channel to reside on according to claim 3, further comprising: In the correspondence table between the terminal priority and the CDMA channel group, the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the high-priority terminal is more than that owned by the target CDMA channel group corresponding to the low-priority terminal. The number of paging channels or broadcast control channels; and the number of terminals in the target CDMA channel group corresponding to the high-priority terminal is less than the number of terminals in the target CDMA channel group corresponding to the low-priority terminal. 7. A device for a terminal to select a CDMA channel to reside on, characterized in that it comprises: The channel group division module is used to divide all the CDMA channels configured on the base station into at least two CDMA channel groups, determine the CDMA channel group corresponding to each terminal in the coverage area, and carry out different load planning for different CDMA channel groups; The CDMA channel group is used to provide services for terminals with different priorities; A channel determination module, configured to determine all CDMA channels configured with paging channels or broadcast control channels in each CDMA channel group; The list information sending module is used to broadcast a channel list message in the coverage area of the base station through all CDMA channels configured with paging channels or broadcast control channels in each of the CDMA channel groups; the channel list message includes the CDMA The channel identifiers of all the CDMA channels of the paging channel or the broadcast control channel are configured in the channel group, so that the terminals with different priorities select the CDMA channel to camp on in the CDMA channel group. 8. The device for a terminal to select a CDMA channel to reside on according to claim 7, further comprising: a registration request receiving module, configured to receive a registration request message sent by the terminal; The first resident channel determination module is used to determine the target CDMA channel group corresponding to the terminal according to the terminal priority information and the correspondence table between the terminal priority and the CDMA channel group, and determine the target CDMA channel group corresponding to the terminal according to the hash algorithm. In the CDMA channel group, determine the target CDMA channel that the terminal should camp on; in the corresponding table of the terminal priority and the CDMA channel group, the paging channel or broadcast control channel owned by the target CDMA channel group corresponding to the high priority terminal The number is more than the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the low-priority terminal; and the number of terminals owned in the target CDMA channel group corresponding to the high-priority terminal is less than that of the low-priority terminal. The number of terminals owned in the target CDMA channel group corresponding to the priority terminal; A service redirection message sending module, configured to send, by the base station, a service redirection message to the terminal when the CDMA channel on which the terminal currently resides is inconsistent with the target CDMA channel, and the service redirection message is used to indicate The terminal transfers from the currently camped CDMA channel to a target CDMA channel where the terminal should camp. 9. The device for a terminal to select a CDMA channel to reside on according to claim 8, further comprising: The first obtaining module is configured to obtain the terminal priority information and the correspondence table between the terminal priority and CDMA channel group from the home location register. 10. The device for a terminal to select a CDMA channel to reside on according to claim 7, further comprising: A paging request receiving module, configured to receive a paging request message sent by a mobile services switching center; The second obtaining module is used to obtain the called terminal priority information and the correspondence table between the terminal priority and the CDMA channel group from the home location register according to the paging request message; The second camping channel determination module is used to determine the target CDMA channel group corresponding to the calling terminal according to the obtained called terminal priority information and the correspondence table between the terminal priority and the CDMA channel group, and the base station is in the corresponding table. In the target CDMA group, determine the CDMA channel where the called terminal resides according to the hash algorithm; in the corresponding table between the terminal priority and the CDMA channel group, the paging channel owned by the target CDMA channel group corresponding to the high priority terminal Or the number of broadcast control channels is more than the number of paging channels or broadcast control channels owned by the target CDMA channel group corresponding to the low-priority terminal; and the number of terminals owned in the target CDMA channel group corresponding to the high-priority terminal number, less than the number of terminals owned in the target CDMA channel group corresponding to the low-priority terminal; A paging module, configured to page the called terminal through the paging channel or the broadcast control channel of the CDMA channel where the called terminal resides.

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