CN100373837C - Transmission format combination set configuration method for code division multiple access communication system - Google Patents

Abstract

The present invention relates to a method for configuring a transmission format combination set in the process of establishing a communication service, and discloses a method for configuring a transmission format combination set used in a code division multiple access communication system, so that it can better meet UE users' requirements for establishing communication services Require. This transmission format combination set configuration method includes the following steps: the user equipment reports the user equipment capability parameter to the radio network controller; the radio network controller judges whether the number of the default transmission format combination set exceeds the transmission format in the user equipment capability parameter If the number supported by the combination set is not exceeded, the radio network controller configures the default transmission format combination set to the user equipment; if it exceeds, the radio network controller will be able to guarantee the basic transmission format for data transmission, and The remaining transmission formats selected from the remaining transmission formats except the basic transmission format are configured to the user equipment as a new transmission format combination set.

Description

Transmission format combination set configuration method for code division multiple access communication system

technical field

The present invention relates to a method for configuring a transmission format combination set during the establishment of a communication service, in particular to a transmission format combination set during the establishment of a communication service in a Code Division Multiple Access (CDMA) communication system configuration method.

Background technique

In the CMDA communication system, user equipment (User Equipment, referred to as "UE") can communicate with one or more core networks (Core Network, referred to as "CN") via a radio access network (Radio Access Network, referred to as "RAN") to communicate. Among them, the UE can be a mobile phone, a notebook computer with a mobile terminal, or a mobile communication device installed on a vehicle, etc. These devices can perform voice and/or data communication services with the wireless access network, for example: calling Telephone, fax, web browsing, and e-mail and so on.

Wherein, the RAN covers a geographic area divided into cell areas, and each cell area is served by a base station, that is, the base station provides wireless coverage in the area. The base station communicates with the UEs in the cell through the air interface.

In the RAN, several base stations are connected to a radio network controller (Radio Network Controller, "RNC" for short). The RNC is connected to one or more CNs.

In the above communication system, when the UE needs to communicate with the CN, it sends a radio resource control connection request message to the RNC; after receiving the request message, the RNC responds to the UE with a radio resource control connection establishment message, which requires the UE to set the UE capability parameter upload to the RNC; after receiving the message, the UE responds to the RNC with a radio resource control connection message, which contains UE capability parameters; in addition, the UE sends a transparent UE initialization message to the CN; after the CN receives the transparent message, it sends The RNC sends a radio access bearer assignment message, which requires the RNC to configure the service parameters of the UE according to the Quality of Service (Quality of Service, referred to as "QoS"). The service parameters include such as Transport Format Combination Set (Transport Format Combination Set, referred to as "TFCS") and other parameters; after that, the RNC transmits the parameters to the UE through the radio bearer establishment message according to the QoS requirements; the UE configures according to the parameters, and sends a radio bearer establishment complete message to the RNC after the configuration is completed. message to complete the establishment of the service connection.

As mentioned above, in the CDMA communication system, there are many kinds of communication services including telephone, fax, web browsing, sending and receiving e-mail, etc., and the UE often requires the establishment of a communication service combining multiple services. However, the more services required to be established by the UE, the higher the requirements on its own UE capabilities. If the UE capabilities do not meet the requirements, communication services cannot be established. For example, the supported number of TFCS in the UE capability parameter cannot be less than the number of TFCS required for establishing a communication service, otherwise the establishment of the communication service will fail.

However, due to differences in manufacturers and configurations, UEs on the market have different capabilities. Therefore, it often happens that the supported number of TFCS in the UE capability parameter is smaller than the number of TFCS required for establishing a communication service.

At present, the industry generally adopts two methods to deal with the above-mentioned problems.

The first processing method is that the RNC directly judges whether the number of TFCS required by the communication service exceeds the number supported by the TFCS in the UE capability parameter, and if it exceeds, the RNC rejects the connection request of the UE.

The second processing method is that when the RNC judges that the number of TFCS required by the communication service exceeds the number supported by the TFCS in the UE capability parameter, it reduces the required TFCS number in a disguised form by reducing the maximum data transmission rate of the communication service required to be established. , making it smaller than the number supported by the TFCS of the UE, so as to ensure the successful establishment of the service combination.

In practical applications, the above two solutions cannot meet the requirements of UE users.

For the first processing method, simply judge, and refuse all if the conditions are not satisfied, which directly leads to a low success rate of communication service establishment, which greatly affects the performance index of RNC;

For the second processing method, although the communication service can be established successfully, the service rate is reduced, thus greatly reducing the system performance, which is also what UE users do not want to see.

It can be seen that when the number of TFCS required to establish a communication service exceeds the number supported by the TFCS in the UE capability parameter, the above two processing methods adopt a relatively passive approach, either simply rejecting the service establishment request of the UE, or tearing down the east wall Make up the western wall to reduce the cost of the maximum data transmission rate and reduce the number of TFCS required, which affects the overall service quality.

Contents of the invention

The technical problem to be solved by the present invention is to provide a transmission format combination set configuration method for a code division multiple access communication system, which can better meet the requirements of UE users for establishing communication services.

In order to solve the above-mentioned technical problems, the transmission format combination set configuration method for CDMA communication system provided by this invention includes the following steps:

A user equipment reports user equipment capability parameters to the radio network controller;

The B radio network controller judges whether the number of transmission format combinations included in the default transmission format combination set exceeds the number supported by the transmission format combination set in the user equipment capability parameter,

If not, the radio network controller configures the default transmission format combination set to the user equipment, and the configuration ends;

If it exceeds, execute step C;

The C radio network controller configures the basic transmission format capable of ensuring data transmission, and other transmission formats selected from the remaining transmission formats except the basic transmission format, to the user equipment as a new transmission format combination set, Wherein, the number of transmission format combinations contained in the transmission format combination set of the sum of the number of the basic transmission format and the number of other selected transmission formats does not exceed the number supported by the transmission format combination set of the user equipment, and thus the configuration ends.

Described step C comprises the following steps:

C1 determines the upper limit of the number of configurable transmission formats according to the number supported by the transmission format combination set of the user equipment;

C2 determines the basic transmission format that can guarantee data transmission;

C3 uses the difference between the upper limit of the number of configurable transmission formats and the number of basic transmission formats as the upper limit of the number of selectable remaining transmission formats;

C4 Select the remaining transmission formats according to the upper limit of the number of selectable remaining transmission formats;

C5 configures the basic transmission format and other transmission formats to the user equipment as a new transmission format combination set, and thus the configuration ends.

The basic transmission format is a transmission format of an empty packet, a transmission format ensuring immediate transmission of a small amount of data, and a transmission format of a maximum transmission rate.

In the step C4, the remaining transmission formats may be arbitrarily selected from the remaining transmission formats according to the upper limit of the number of selectable remaining transmission formats. Or, select a transmission format corresponding to the minimum number of data units among the remaining transmission formats, and then select a transmission format every other step as the remaining transmission format, wherein the step=the remaining The number of transmission formats/(the upper limit of the number of configurable transmission formats - the number of basic transmission formats), if the result is a decimal, it will be incremented by 1.

Through comparison, it can be found that the difference between the technical solution of the present invention and the prior art is that when the RNC configures the number of TFCS for the UE, it first judges whether the number of transport format combinations contained in the TFCS required to establish the communication service exceeds the TFCS of the UE If the number of supported TFCS is exceeded, the TFCS is newly configured according to the supported number of TFCS of the UE, so as to ensure the transmission of business data and ensure that the number of transport format combinations contained in the newly configured TFCS does not exceed The number of TFCS supported by the UE.

The difference in this technical solution has brought obvious beneficial effects, greatly improving the success rate of communication service establishment, thereby optimizing the performance index of RNC; and because it is not at the expense of sacrificing the maximum data transmission rate, it is also very Good system performance is ensured.

Description of drawings

Fig. 1 is a schematic diagram, describing the process of establishing a communication service using the TFCS configuration method of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, and better reveal the principle and application of the invented TFCS configuration method, we will combine the process of establishing a communication service connection in the CDMA communication system to configure the new TFCS Methods are described and explained in detail. Wherein, each step in establishing the communication service connection except the TFCS configuration is only briefly described in general, and will not be expanded in this specification.

FIG. 1 describes the process of establishing a communication service using the TFCS configuration method of the present invention in a CDMA communication system. As shown in Figure 1, the process of establishing a communication service includes the following typical steps:

First, the UE sends a radio resource control connection request message to the RNC.

After receiving the radio resource control connection request message, the RNC responds to the UE with a radio resource control connection establishment message, and requests the UE to upload UE capability parameters to the RNC in the message.

In response to the radio resource control connection establishment message of the RNC, the UE reports a radio resource control connection message to the RNC, and the message includes UE capability parameters required by the RNC to upload. As mentioned above, the UE capability parameter includes the number of TFCS supported by the UE.

In addition, the UE will also send a transparent UE initialization message to the CN. After the CN receives the transparent message, it sends a radio access bearer assignment message to the RNC, which requires the RNC to configure the service parameters of the UE according to the quality of service (QoS) and the number of TFCS supported by the UE that the RNC has learned, wherein Including configuring TFCS.

After receiving the radio access bearer assignment message, the RNC configures a TFCS that can not only guarantee data transmission, but also ensure successful service establishment, and transmit the TFCS to the UE through a radio bearer establishment message. This process is the new TFCS configuration method proposed by the present invention.

The principle and process of the above TFCS configuration will be further described below.

It is known that in the current CDMA communication system, the number of default TFCS (that is, the corresponding TFCS required to establish various communication services under normal circumstances) is preset in the RNC. As mentioned above, after the RNC receives the radio access bearer assignment message from the CN requesting it to configure TFCS for the UE, the RNC first judges whether the number of transport format combinations contained in the default TFCS preset inside it exceeds that of the UE. Number of supported TFCS.

If the judgment result is not exceeded, it means that the UE capability can meet the number of transport format combinations included in the TFCS required by the communication service under normal circumstances, then the RNC sends the default TFCS to the UE through a radio bearer establishment message, and the configuration of the TFCS The process ends here.

On the other hand, if the judgment result is that the number of transport format combinations contained in the default TFCS exceeds the number supported by the UE's TFCS, it means that the UE's capability cannot meet the number of transport format combinations contained in the TFCS required by the communication service under normal circumstances, Then the RNC needs to configure a new TFCS for the UE, so as to ensure that the communication service is established successfully. Specifically, the RNC first determines which transmission formats can guarantee data transmission at a minimum (hereinafter these transmission formats are referred to as "basic transmission formats"), and among the remaining transmission formats other than these basic transmission formats, select the rest The transmission format that can be configured for the UE (hereinafter referred to as "the rest of the transmission format"), and the basic transmission format and other transmission formats as a new TFCS are sent to the UE through the radio bearer establishment message, and the configuration process of the new TFCS ends here . It must be pointed out that a condition needs to be ensured in this step: the sum of the number of basic transport formats and the number of other transport formats in the TFCS includes the number of transport format combinations not exceeding the number supported by the UE's TFCS.

In order to make this process clearer, the following example illustrates how the RNC determines the basic transmission format and selects the remaining transmission formats.

Take 3.4K signaling + Adaptive Multi-Rate (Adaptive Multi-Rate, referred to as "AMR") full mode + 256K interactive packet switching service as an example, in which the signaling channel uses 2 transmission formats, and the AMR full mode uses 10 types transmission format. In addition, it is assumed that the supported number of TFCS in the UE capability parameter is 128.

For 256K interactive packet switching, the transmission format of the known protocol configuration (ie "number of data units ^* data unit size") is 0*336, 1*336, 2*336, 4*336, 8*336, 12*336 and 18*336, a total of 7 types. Calculate the number of transmission format combinations contained in the default TFCS according to the calculation method of the number of transmission format combinations contained in TFCS:

The default TFCS contains the number of transport format combinations

=Number of transmission formats used by the signaling channel*Number of transmission formats used by ARM full mode*Number of transmission formats configured by the protocol

=2*10*7

=140

Among them, "2" indicates that the signaling channel uses 2 transmission formats, "10" indicates that the AMR full mode uses 10 transmission formats, and "7" indicates that there are 7 transmission formats configured by known protocols.

Apparently the number of transport format combinations included in the default TFCS exceeds the number supported by the UE's TFCS. According to the TFCS configuration method of the present invention, the RNC needs to reconfigure the UE's TFCS. The specific process is as follows:

First, determine the upper limit of the number of transport formats that can be configured within the range of the number supported by the TFCS of the UE capability parameter.

When the number of transmission formats is 7, 6, and 5 respectively, according to the number of transmission format combinations contained in TFCS = the number of transmission formats used by the signaling channel * the number of transmission formats used in ARM full mode * the number of transmission formats configured by the protocol, it can be calculated It can be seen that the numbers of transport format combinations included in the corresponding TFCS are 140, 120, and 100, respectively. Since it is assumed in this embodiment that the number of TFCS supported by the UE is 128, the upper limit of configurable transmission formats in this embodiment is 6.

Determine the upper limit of the number of transmission formats that can be configured, and then determine the basic transmission format. It is known that in the 7 transmission formats of 0*336, 1*336, 2*336, 4*336, 8*336, 12*336 and 18*336, 0*336 means an empty packet, and 1*336 guarantees a small amount of data It can be transmitted immediately (such as response message). 18*336 represents the transmission format corresponding to the maximum rate of 256K, which can guarantee the maximum transmission rate without loss. With these three transmission formats, it can basically guarantee the 256K interactive packet switching service. Data transmission requirements, so the RNC chooses these three transmission formats as the basic transmission formats.

Subsequently, among the remaining transmission formats except the basic transmission format (namely, the four transmission formats of 2*336, 4*336, 8*336, and 12*336), the upper limit of the number of selectable remaining transmission formats is determined. In this example,

Maximum number of remaining transport formats

= The upper limit of the number of transport formats that can be configured for the UE - the number of basic transport formats

= 6 types - 3 types

= 3 types

Therefore, the RNC can select at most 3 transmission formats from the remaining 4 transmission formats mentioned above as the remaining transmission formats.

In this embodiment, the RNC selects three transmission formats of 2*336, 8*336, and 12*336 in any manner as the rest of the transmission formats.

Finally, the RNC uses the basic transmission format and other transmission formats as a new TFCS to be configured for the UE.

It is worth mentioning that there are many ways to select "other transmission formats". In the above embodiment, the TFCS that satisfies the sum of the number of basic transmission formats and the number of other transmission formats selected includes Under the condition that the number of transport format combinations does not exceed the number supported by the TFCS of the UE, it can be selected arbitrarily. Another option is described below.

First, select the first transmission format 2*336 among the remaining four transmission formats of 2*336, 4*336, 8*336, and 12*336, and then select a transmission format every other step. Wherein, the step size=the number of remaining transmission formats/(the upper limit of the number of configurable transmission formats-the number of basic transmission formats), and if the result is a decimal, it is incremented by 1. In this example,

step size

= number of remaining transmission formats/(upper limit of configurable number of book-changing formats - number of basic transmission formats)

=4/(6-3)

=1.33

After advancing 1, it becomes 2, and the second selected transmission format is 8*336. Therefore, the remaining transmission formats in this example are two transmission formats of 2*336 and 8*336. thus,

The number of transport format combinations contained in the new TFCS

=Number of transmission formats used by the signaling channel*Number of transmission formats used by ARM full mode*Number of transmission formats configured by the protocol

=2*10*5

=100

<128, so as to meet the UE capability requirements.

It can be seen that, when there is a communication service such as an interactive type, if the number of transmission format combinations contained in the required TFCS exceeds the UE capability (that is, the number of TFCS supported by the UE), the transmission format of the interactive type communication service will be represented The transmission format of the empty packet (such as 0*336), the transmission format of a small amount of data immediate transmission (such as 1*336), and the transmission format of the maximum rate transmission (such as 18*336) are determined as the basic transmission format, and then according to the TFCS of the UE The number of supported transmission formats is selected, and the remaining transmission formats are selected to ensure that the number of transmission format combinations contained in the new TFCS does not exceed the capability of the UE.

After the RNC reconfigures a new TFCS for the UE according to the above method, it sends the TFCS to the UE through a radio bearer setup message, and the UE configures the TFCS according to the TFCS, and sends a radio bearer setup completion message to the RNC after the configuration is completed. Thus, the establishment of the communication service is completed.

In addition, it should be added that in this description, the interactive packet switching service is taken as an example, but the present invention is also applicable to other types of communication services such as background service.

Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein, and without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. a transmission format combination configuring method that is used for code division multiple address communication system is characterized in that, comprises following steps:

Party A-subscriber's equipment is to radio network controller report of user capacity of equipment parameter;

The B radio network controller judges whether the number that comprises transformat combination in the default transport format combination set surpasses the support number of the transport format combination set in the described UE capability parameter,

If be no more than, then radio network controller disposes described default transport format combination set to described subscriber equipment, and configuration finishes;

If surpass, execution in step C then;

The C radio network controller can guarantee the basic transformat of transfer of data, and all the other transformats that from remaining transformat except described basic transformat, choose, this subscriber equipment is given in configuration, as new transport format combination set, wherein, the number that comprises transformat combination in the transport format combination set of the number sum of the number of described basic transformat and selected all the other transformats is no more than the support number of the transport format combination set of described subscriber equipment, thereby configuration finishes.

2. the transmission format combination configuring method that is used for code division multiple address communication system according to claim 1 is characterized in that, described step C comprises following steps:

C1 determines the configurable transformat number upper limit according to the support number of the transport format combination set of described subscriber equipment;

C2 determines to guarantee the basic transformat of transfer of data;

C3 is the described configurable transformat number upper limit, and poor with the number of described basic transformat is as the number upper limit of selectable all the other transformats;

C4 selects all the other transformats according to the number upper limit of described selectable all the other transformats in remaining transformat;

C5 is with described basic transformat, and all the other transformats, and subscriber equipment is given in configuration, and as new transport format combination set, thereby configuration finishes.

3. the transmission format combination configuring method that is used for code division multiple address communication system according to claim 1 and 2, it is characterized in that described basic transformat is the transformat of empty bag, the transformat that guarantees the low volume data instantaneous transmission, the transformat of peak transfer rate.

4. the transmission format combination configuring method that is used for code division multiple address communication system according to claim 2, it is characterized in that, in described step C4,, in remaining transformat, select all the other transformats arbitrarily according to the number upper limit of described selectable all the other transformats.

5. the transmission format combination configuring method that is used for code division multiple address communication system according to claim 2, it is characterized in that, in described step C4, the number upper limit according to described selectable all the other transformats, in described remaining transformat, select transformat corresponding to the minimum data number of unit, after this select a kind of transformat every a step-length, as described all the other transformats, wherein said step-length=described remaining transformat number/(the configurable transformat number upper limit-basic transformat number) is that decimal is then to enterprising 1 as the result.

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