CN100407801C - A method of scheduling paging message in base station subsystem - Google Patents

Abstract

The invention discloses a method for scheduling paging messages in a base station subsystem. According to the type of paging messages, the method establishes an overall message queue, channel assignment messages and paging messages in the base station subsystem according to the priority of paging messages. Response message queue, voice service call related time slot message queue, data service call related time slot message queue, voice service call related other non-slot message queue, data service call related other non-slot message queue, non-call related time slot message queue Queues, non-call-related non-slotted message queues, and broadcast message queues. Store the received paging message in the message queue corresponding to the type of the paging message. When a time slot starts to schedule the paging message, it will store the paging message in each message queue according to the priority of the paging message. Paging message transmission, so as to accurately select and schedule different paging messages, reduce the adverse effects caused by delay and discarded paging messages, and improve service quality.

Description

A method of scheduling paging message in base station subsystem

technical field

The present invention relates to code division multiple access (CDMA, Code Division Multiple Access) base station technology, in particular to a method for scheduling paging messages in a base station subsystem.

Background technique

In the process of processing the paging message, the base station transceiver (BTS, BaseStation Transceiver) of the CDMA base station subsystem (BSS, Base Station System) receives the paging message according to the respective sending characteristics of the paging message, and adopts a certain scheduling method Send the received paging message to the air interface. However, the BTS's ability to process paging messages must first meet the air interface bandwidth requirements. Since the bandwidth of the air interface limits the paging message flow, the paging message flow is large during traffic peaks, which will inevitably cause delays in paging messages. Sending and discarding, if the important paging message is delayed or discarded, it will bring very serious consequences to the call, for example, the call may not be connected for a long time. Therefore, under the condition of a certain air interface bandwidth, the BTS needs to use a reasonable paging message scheduling method to reduce the adverse effects caused by the delay and discarding of the paging message.

The paging message scheduling method of BTS in the prior art is: divide the paging message into overall message, time slot message and non-slot message, and set the priority according to its importance, and send the overall message in a time slot preferentially. message, then a slotted message, and finally a non-slotted message. Although this method can alleviate the adverse effects caused by the delay and discarding of the paging message, because this method only roughly divides the paging message into three types, and performs scheduling processing accordingly, and in the CDMA system The paging message is relatively complicated, so the method in the prior art cannot select and dispatch the paging message very accurately, so many important paging messages will still be delayed and discarded, thereby also causing a relatively large adverse effect on the business, and the quality of service not tall.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for scheduling paging messages in the base station subsystem, accurately select and schedule different paging messages, reduce the adverse effects caused by delay and discarding paging messages, and improve service quality.

In order to achieve the above object, the technical solution of the present invention is specifically implemented in the following way:

A method for scheduling paging messages in a base station subsystem, the method comprising:

A. In the base station subsystem, according to the type of paging message and the priority order for the type of paging message, establish the overall message queue, channel assignment message and response message queue, voice service call related time slot message queue, data service Call-related time-slot message queues, voice service call-related other non-slot message queues, data service call-related other non-slot message queues, non-call-related time-slot message queues, non-call-related non-slot message queues, and broadcast message queues;

B. When the base station subsystem receives the paging message, it reads the characteristic information in the paging message, and stores the paging message in the corresponding to the type of the paging message according to the type characterization information in the characteristic information in the message queue;

C. When a time slot starts to schedule paging messages, read the overall message queue, channel assignment message and response message queue, voice service call related time slot message queue, and data service call related time slot sequentially according to the priority order Slot message queue, other non-slot message queues related to voice service calls, other non-slot message queues related to data service calls, non-call related non-slot message queues, non-call related non-slot message queues, and broadcast message queues, and send them in sequence paging messages existing in the respective message queues.

The type characterization information in the feature information includes a message type field and a service option field, wherein the message type field is used to distinguish the overall message identifier, channel assignment message identifier, response message identifier or broadcast message identifier, and the service option field is used to distinguish A voice service identifier or a data service identifier, and a call-related identifier.

The specific method of storing the paging message in the message queue corresponding to the type of the paging message according to the type characterization information of the feature information in the step B includes:

a, judging whether the message type field of the type characterization information in the feature information is an overall message identifier, if so, then storing the paging message in the overall message queue, otherwise, performing the next step;

b. Judging whether the message type field of the type characterization information in the feature information is a channel assignment message identifier or a response message identifier, if yes, then store the paging message in the channel assignment message and response message queue, otherwise, execute next step;

c, judging whether the message type field of the type characterization information in the feature information is a broadcast message identifier, if so, then storing the paging message in the broadcast message queue, otherwise, performing the next step;

d. Determine the working mode of the communication equipment terminal corresponding to the paging message. If the working mode of the communication equipment terminal is the time slot mode, then determine whether there is a call-related identifier in the service option field of the type characterization information in the feature information, and if so , then execute step e, otherwise, store the paging message into the non-call related time slot message queue; if the working mode of the communication device terminal is non-time slot mode, then judge whether the service option field of the type characterization information in the characteristic information is There is a call-related identification, if there is, step f is performed, otherwise, the paging message is stored in a non-call-related non-slot message queue;

e. Judging whether the service pointing field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then store the paging message in the voice service call-related time slot message queue, if there is a data service ID, then store the paging message in the message queue of the time slot related to the data service call, and end the process;

f. Determine whether the service pointing field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then store the paging message in other non-slot message queues related to the voice service call, if there is If the data service identifier is used, the paging message is stored in other non-slot message queues related to the data service call.

The feature information of the paging message includes the identification number of the communication device terminal corresponding to the paging message, and the method for judging the working mode of the communication device terminal corresponding to the paging message in step d is: according to the paging message The identification number of the communication equipment terminal corresponding to the paging message in the feature information reads the working mode of the communication equipment terminal from the record data of the base station subsystem.

The specific method of sending the paging message in the message queue in step C is: encapsulating the paging message into an air interface frame, adding the air interface frame to the sending buffer and sending it.

In the described step C, after each paging message in the message queue is sent, the following steps are also included:

C1, judging whether the current time slot is full, if yes, then end the process, otherwise, execute the next step;

C2. Determine whether the current message queue is the message queue with the lowest priority. If yes, then encapsulate a monitoring release message and fill an empty message, add the monitoring release message and empty message to the sending buffer and send it, otherwise, read the next Priority message queue, continue to step C.

The monitoring release message is used to notify the communication device terminal to stop monitoring the paging message of the current time slot after receiving the monitoring release message within the current time slot.

Because the method according to the present invention is according to the importance degree of various paging messages, if the consequences caused by discarding, the requirements of system specifications and the realization needs of software, the paging messages are accurately divided into overall messages, ECAM messages according to the level of priority. /CAM message and BS ACK ORDER message, voice service call related time slot message, data service call related time slot message, voice service call related other non-slot message, data service call related other non-slot message, non-call related time slot Messages, non-call related non-slot messages and broadcast short messages, and send paging messages according to the priority level, and select and schedule paging messages very accurately, so as to ensure timely sending of important paging messages, greatly reducing delays and discarding The adverse effect caused by the paging message on the business can improve the service quality of the system.

Description of drawings

Fig. 1 is the structural diagram of the message queue that the present invention sets up in BTS;

Fig. 2 is when BTS receives paging message, the flow chart that paging message is processed;

Fig. 3 is a flow chart of sending paging messages according to the priority level when a time slot begins to schedule paging messages.

Detailed ways

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

Since each paging message has feature information, the feature information includes the type characterization information of the paging message and the identification number of the communication device terminal corresponding to the paging message. The type characterization information of the communication device terminal is generally described for the mobile station, including a message type field and a service option field, wherein the message type field includes the type identifier of the paging message, for example, it may include a general paging message identifier, an assignment message ID, response message ID and broadcast message ID, and the service pointing field includes call related ID, non-call related ID, voice service ID or non-voice service ID. The characteristic information identifies the function, service option and transmission characteristics of the paging message, and the paging message can be accurately divided into different types according to the type characterization information in the characteristic information of the paging message. In this embodiment, according to the degree of importance of the paging message, if the consequences caused by discarding, the requirements of the system specification and the realization of the software need to be accurately divided into the following types:

1. According to the sending characteristics of the paging message, it is divided into time slot message and non-slot message. The time slot refers to the time unit for sending messages stipulated in the protocol, and the time slot message indicates that the communication device terminal must receive the paging message in the specified time slot; the non-slot message indicates that the communication The device terminal can always monitor and receive paging messages at any time. The time slot message and non-slot message are related to the working mode of the communication equipment terminal. If the communication equipment terminal works in the time slot mode, the related paging message is a time slot message. If the communication equipment terminal works in the non-time slot mode, then The relevant paging message is a non-slot message, and the working mode of the communication equipment terminal is registered in the base station subsystem.

2. According to the function of the paging message, it is divided into: general message, call related message and call non-related message; the general message is a kind of paging message that the communication device terminal collects and obtains network parameters, for example, the communication device terminal can collect and obtain the system parameters and access parameters, etc.; the call-related message is a call-related message; the call-unrelated message is a call-unrelated message.

3. The call-related messages can also be further divided into finer divisions. In this embodiment, they can be divided into: general paging message (GPM), channel assignment message ECAM/CAM, response order message BS ACK ORDER and other order (ORDER) messages, For example, RELEASE ORDER message, REORDERORDER message, etc. in:

Described GPM can be divided into voice service GPM and data service GPM again, and the business option of described voice service GPM is voice service option, if this voice service GPM is discarded, then influence the voice call that will set up soon; Described data service GPM The service option is a packet data service option or a circuit-type data service. If the data service GPM is discarded, it will affect the data service call to be established;

The ECAM/CAM is a non-slotted message, if discarded, it will affect the call being established;

The BS ACK ORDER is the response message of the LAC layer to the initial call or paging response, and is also a non-slot message. If it is discarded, it will affect the call being established.

4. Non-call-related messages can be further divided into more detailed divisions. In this embodiment, they are divided into: public channel short messages (DBM), message waiting notification messages (FNM), other public channel non-slot messages, and broadcast short messages. Described DBM comprises point-to-point short message and realizes the short message of broadcasting mode with point-to-point; Described other common channel non-slot messages can be a kind of business option and are the GPM message that uses short message to locate; Described broadcast short message It is a short message containing a broadcast address.

According to the above classification of paging messages, and according to the importance of the impact of various types of paging messages on services, the priority of the above paging messages is determined, and the following describes the priority of various paging messages:

1. The overall message has the highest priority: because it can ensure that the network parameters are updated in time, and the communication equipment terminal can obtain these parameters in time.

2. Slotted messages are prioritized over non-slotted messages: since slotted messages can be sent at any time, slotted messages are scheduled to be sent first. If the specified time slot is missed, the slotted message will be sent after a specified paging cycle. At least 1.28 seconds. But, ECAM/CAM message and BS ACK ORDER message are exceptions, although these two messages are non-slot messages, due to discarding, then will affect the call being set up, so these two messages are prior to the time slot message, in the present embodiment , all non-slotted messages except ECAM/CAM messages and BS ACK ORDER messages are referred to as other non-slotted messages.

3. Call-related messages are prioritized over non-call-related messages: this is because prioritizing call-related messages can ensure the normal establishment of calls. If they are discarded, it will affect the service calls that are about to or are being established, so that users can avoid being rejected directly. thereby improving user satisfaction;

4. In call-related messages, ECAM/CAM messages and BS ACK ORDER messages take precedence over GPM messages, so that service calls being established can be protected first, and service calls to be established are discarded; The impact is relatively large, for example, telephone interruption will greatly reduce user satisfaction, so voice service GPM messages are prioritized over data service GPM message scheduling.

5. Among non-call-related messages, since broadcast short messages are broadcast to the entire network, and most of them are non-important services, such as advertisements and weather forecasts, the priority of broadcast short messages is the lowest.

To sum up, the priority of paging messages is sorted from high to low as follows:

General message > ECAM/CAM message and BS ACK ORDER message > time slot message related to voice service call > time slot message related to data service call > other non-slot message related to voice service call > other non-slot message related to data service call > non-time slot message Call-related slotted messages > non-call-related non-slotted messages > broadcast short messages.

According to the above-mentioned division of paging message types and the level of priority, the method described in this embodiment sets up different message queues in the BTS, as shown in Figure 1, the order of priority is: overall message queue 101, Channel assignment message and response message queue 102, voice service call related time slot message queue 103, data service call related time slot message queue 104, voice service call related other non-slot message queue 105, data service call related other non-time slot message queue Message queue 106 , non-call related slot message queue 107 , non-call related non-slot message queue 108 and broadcast message queue 109 .

When the BTS receives the paging message, as shown in Figure 2, according to the type characterization information in the paging message feature information, the type of the paging message is distinguished, and then the paging message is stored in the paging message according to the type of the paging message In the message queue corresponding to the type of the paging message, the specific steps are as follows:

Step 201, read the feature information in the received paging message, judge whether the message type field of the type characterization information in the feature information is an overall message identifier, if yes, then store the paging message in the overall message queue 101, Otherwise, go to the next step;

Step 202, judging whether the message type field of the type characterization information in the feature information is a channel assignment message identifier or a response message identifier, if yes, then storing the paging message in the channel assignment message and response message queue 102, otherwise , execute the next step;

Step 203, judging whether the message type field of the type characterization information in the feature information is a broadcast message identifier, if so, then storing the paging message in the broadcast message queue 109, otherwise, performing the next step;

Step 204, read the working mode of the communication equipment terminal from the record data of the base station subsystem according to the identification number of the communication equipment terminal in the characteristic information, and judge the characteristic information if the working mode of the communication equipment terminal is the time slot mode Whether the service option field of the type characterization information has a call-related identification, if there is, then perform step 205, otherwise, the paging message is stored in the non-call-related time slot message queue 107; if the operating mode of the communication device terminal is non-call Slot mode, then judge whether the service option field of the type characterization information in the feature information has a call-related identifier, if so, then perform step 206, otherwise, store the paging message into the non-call-related non-slot message queue 108;

Step 205, judging whether the service option field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then the paging message is stored in the voice service call-related time slot message queue 103, if there is If the data service identifier is used, the paging message is stored in the data service call-related time slot message queue 104, and the flow process is ended;

Step 206, judging whether the service pointing field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then store the paging message in other non-slot message queues 105 related to the voice service call, If there is a data service identifier, the paging message is stored in the other non-slot message queue 106 related to the data service call.

When a time slot begins to schedule paging messages, the overall message queue 101, channel assignment message and response message queue 102, the message queue 103 of the voice service call-related time slot, and the message queue 103 of the data service call-related Time slot message queue 104, other non-slot message queues 105 related to voice service calls, other non-slot message queues 106 related to data service calls, non-call related time slot message queues 107, non-call related non-slot message queues 108 and broadcast The message queue 109 sends the paging messages in the above-mentioned message queues sequentially, and its specific steps are as shown in Figure 3, including:

Step 301, first read the overall message queue, judge whether there is a paging message to be sent in the message queue, if so, then encapsulate the paging message into an air interface frame, add the air interface frame to the sending buffer to send, and execute Next step; otherwise, directly execute the next step; the air interface frame described here is a data frame adapted to the air interface.

Step 302, judging whether the current time slot is full, if yes, then end the process, otherwise, execute the next step;

Step 303, read the next message queue, judge whether the next message queue is a broadcast message queue, if yes, execute step 306, otherwise, execute the next step;

Step 304, judge whether there is a paging message to be sent in the current message queue, if so, then encapsulate the paging message into an air interface frame, add the air interface frame to the sending buffer and send, and execute the next step; otherwise, directly Execute the next step;

Step 305, judging whether the current time slot is full, if yes, then end the process, otherwise, execute the next step;

Step 306, read the broadcast message queue, judge whether there is a paging message to be sent in the message queue, if so, then encapsulate the paging message into an air interface frame, add the air interface frame to the transmission buffer for transmission, and execute the following One step; otherwise, go to the next step directly;

Step 307, judging whether the current time slot is full, if yes, then end the process, otherwise, execute the next step;

Step 308, encapsulating a monitor release message and an empty message, adding the monitor release message and the empty message to the sending buffer for transmission, and ending the process. The monitoring release message is a GPM message, which is used to notify the communication device terminal to stop monitoring the paging message of the current time slot starting from the monitoring release message in the current time slot. The function of the empty message is to fill the current time slot.

Through the above method, the overall message, ECAM/CAM message and BS ACK ORDER message, voice service call-related time slot message, data service call-related time slot message, ECAM/CAM message and BS ACK order message can be sent in order according to the priority level Call-related non-slot messages for voice services other than ORDER messages, call-related non-slot messages for data services other than ECAM/CAM messages and BS ACK ORDER messages, non-call-related slot messages, and non-call-related non-slot messages and broadcast short messages.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention.

Claims (7)

1. A method for scheduling paging messages in a base station subsystem, characterized in that the method comprises: A. In the base station subsystem, according to the type of paging message and the priority order for the type of paging message, establish the overall message queue, channel assignment message and response message queue, voice service call related time slot message queue, data service Call-related time-slot message queues, voice service call-related other non-slot message queues, data service call-related other non-slot message queues, non-call-related time-slot message queues, non-call-related non-slot message queues, and broadcast message queues; B. When the base station subsystem receives the paging message, it reads the characteristic information in the paging message, and stores the paging message in the corresponding to the type of the paging message according to the type characterization information in the characteristic information in the message queue; C. When a time slot starts to schedule paging messages, read the overall message queue, channel assignment message and response message queue, voice service call related time slot message queue, and data service call related time slot sequentially according to the priority order Slot message queue, other non-slot message queues related to voice service calls, other non-slot message queues related to data service calls, non-call related non-slot message queues, non-call related non-slot message queues, and broadcast message queues, and send them in sequence paging messages existing in the respective message queues. 2. The method according to claim 1, wherein the type characterization information in the feature information includes a message type field and a service option field, wherein the message type field is used to distinguish the overall message identifier and the channel assignment message identifier , response message identifier or broadcast message identifier, and the service option field is used to distinguish voice service identifiers or data service identifiers, and call-related identifiers. 3. The method according to claim 2, wherein in the step B, the paging message is stored in a message queue corresponding to the type of the paging message according to the type characterization information of the feature information Specific methods include: a, judging whether the message type field of the type characterization information in the feature information is an overall message identifier, if so, then storing the paging message in the overall message queue, otherwise, performing the next step; b. Judging whether the message type field of the type characterization information in the feature information is a channel assignment message identifier or a response message identifier, if yes, then store the paging message in the channel assignment message and response message queue, otherwise, execute next step; c, judging whether the message type field of the type characterization information in the feature information is a broadcast message identifier, if so, then storing the paging message in the broadcast message queue, otherwise, performing the next step; d. Determine the working mode of the communication equipment terminal corresponding to the paging message. If the working mode of the communication equipment terminal is the time slot mode, then determine whether there is a call-related identifier in the service option field of the type characterization information in the feature information, and if so , then execute step e, otherwise, store the paging message into the non-call related time slot message queue; if the working mode of the communication device terminal is non-time slot mode, then judge whether the service option field of the type characterization information in the characteristic information is There is a call-related identification, if there is, step f is performed, otherwise, the paging message is stored in a non-call-related non-slot message queue; e. Judging whether the service pointing field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then store the paging message in the voice service call-related time slot message queue, if there is a data service ID, then store the paging message in the message queue of the time slot related to the data service call, and end the process; f. Determine whether the service pointing field of the type characterization information in the feature information has a voice service identifier or a data service identifier, if there is a voice service identifier, then store the paging message in other non-slot message queues related to the voice service call, if there is If the data service identifier is used, the paging message is stored in other non-slot message queues related to the data service call. 4. The method according to claim 3, wherein the feature information of the paging message includes the identification number of the communication device terminal corresponding to the paging message, and the communication terminal corresponding to the paging message is judged in step d. The method for the working mode of the equipment terminal is: read the working mode of the communication equipment terminal from the record data of the base station subsystem according to the identification number of the communication equipment terminal corresponding to the paging message in the characteristic information of the paging message. 5. The method according to claim 1, wherein the specific method of sending the paging message in the message queue described in step C is: encapsulating the paging message into an air interface frame, adding the air interface frame to the sending sent in the cache. 6. The method according to claim 1, characterized in that, in said step C, after sending the paging message in a message queue, the following steps are further included: C1, judging whether the current time slot is full, if yes, then end the process, otherwise, execute the next step; C2. Determine whether the current message queue is the message queue with the lowest priority. If yes, then encapsulate a monitoring release message and fill an empty message, add the monitoring release message and empty message to the sending buffer and send it, otherwise, read the next Priority message queue, continue to step C. 7. The method according to claim 6, wherein the monitoring release message is used to notify the communication device terminal to stop monitoring the paging message of the current time slot after receiving the monitoring release message in the current time slot .

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