CN101146349B - A system and method for improving throughput performance of forward supplementary channel - Google Patents

Abstract

The invention discloses a system and a method for improving the throughput performance of a forward complement channel. The method includes the following two steps. First, applying a calling control module for establishing the forward complement channel by wireless link protocol module, the calling control module applies a wireless resource control module for establishing the forward complement channel; second, the wireless resource control module distributes an unlimited time-length forward complement channel or a limited time-length forward complement channel for the mobile terminal according to the load of a loading sector where the forward complement channel locates. The invention apparently reduces the signaling processing overhead of a basal station system without changing the establishing process of the common forward complement channel, avoids the channel assignment delay caused by frequent assignment of the forward complement channel, and improves the throughput performance of the forward complement channel. Meanwhile, when the upstream data rate decreases, the invention can promptly assign the forward complement channel with slower rate and guarantee the resource utilization ratio of the basal station system.

Description

A kind of system and method thereof that improves throughput performance of forward supplementary channel

Technical field

The present invention relates to CDMA (Code Division Multiple Access, code division multiple access) 2000 base station systems, particularly relate to a kind of system and method thereof that improves the high-speed data service throughput performance of forward supplementary channel.

Background technology

CDMA 2000 base station systems that meet the IS2000 standard provide high-speed packet data service for the mobile subscriber, the aerial physical channel that carries this business is a complement channel, according to the data transfer direction difference, be called forward complement channel by the base station to the complement channel of portable terminal direction, be called reverse complemental channel to the complement channel of base station direction by portable terminal.The transmission rate of complement channel adopts 1X, 2X, and 4X, 8X, the form of 16X is explained, and wherein X is a basic rate unit, and what define in the IS2000 standard has two kinds of 9600bit/s and 14400bit/s.The message transmission rate of complement channel is high more, and system is many more to the resource that physical channel distributes.Therefore how to maximally utilise base station resource, distributing suitable complementary channel velocity is the key of supplemental channel scheduling.

The maximum characteristics that data service is different from speech business are exactly sudden, and according to statistics, the common data services model meets the ON/OFF model.

Because the burst characteristic of above-mentioned data service and complement channel are very big to resources requirement, it is irrational that complement channel adopts the permanent circuit channel mode of general resource allocation, the general complement channel that limit for length's duration is arranged that adopts claims that this duration is Duration in CDMA 2000 base station systems.Burst characteristic for better reflection data service, the short Duration of employing can reduce the waste to resource, but then, frequent channel assignment can bring bigger system signaling processing expenditure and signaling assignment delay and channel throughput, resources loss again.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of system and method thereof that improves throughput performance of forward supplementary channel, and the channel assignment that the frequent assignment that is used to improve the resource utilization of base station system and avoid forward complement channel causes postpones.

To achieve these goals, the invention provides a kind of system that improves throughput performance of forward supplementary channel, be used to comprise CDMA 2000 base station systems of portable terminal, it is characterized in that, also comprise: wireless chain protocol module, Call Control Block and Radio Resource control module;

Described wireless chain protocol module is set up forward complement channel to described Call Control Block application, and described Call Control Block is set up forward complement channel to the request of described Radio Resource control module again;

Described Radio Resource control module is the forward complement channel of described portable terminal distribution endless duration or the forward complement channel that limit for length's duration is arranged according to the loading condition of described forward complement channel place contained fan.

The system of described raising throughput performance of forward supplementary channel, wherein, also comprise a space division multiplexing demultiplexing distribution module, be used to detect the utilization rate of the forward complement channel of no limit in the one-period, and whether again reach the assignment forward complement channel according to the release request that described utilization rate determines whether to initiate forward complement channel.

To achieve these goals, the invention provides a kind of method of utilizing described system to improve throughput performance of forward supplementary channel, it is characterized in that, comprising:

Step 1 is set up forward complement channel by described wireless chain protocol module to described Call Control Block application, and described Call Control Block is set up forward complement channel to the request of described Radio Resource control module again; And

Step 2 is that described portable terminal distributes the forward complement channel of endless duration or the forward complement channel of limit for length's duration is arranged by described Radio Resource control module according to the loading condition of described forward complement channel place contained fan.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 1, also comprise: described wireless chain protocol module determines whether to initiate the step that forward complement channel is set up request to described Call Control Block according to the size of data volume in the data buffer zone.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 1, also comprise: described wireless chain protocol module detects the data volume in the data buffer zone, and when described data volume surpasses application forward complement channel thresholding, determine the scheduling duration and set up forward complement channel to described Call Control Block application.

The method of described raising throughput performance of forward supplementary channel wherein, in the described step 2, also comprises: described Radio Resource control module is obtained the step of the current data user's number of described portable terminal place contained fan.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 2, also comprise: described Radio Resource control module judges that described data user's number is whether less than the step of a light thresholding, in this way, then be the forward complement channel that described portable terminal distributes the endless duration, otherwise be assigned the forward complement channel of limit for length's duration for described portable terminal.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 2, also comprise: determine whether to initiate the step that forward complement channel discharges by the utilization rate that detects the forward complement channel of no limit in the one-period by described space division multiplexing demultiplexing distribution module.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 2, also comprise: when described utilization rate during less than a thresholding, described space division multiplexing demultiplexing distribution module notifies described wireless chain protocol module to stop the forward complement channel framing, and notify described Call Control Block to discharge described forward complement channel, described Call Control Block reinforms the on-air radio resource that described Radio Resource control module discharges described forward complement channel.

The method of described raising throughput performance of forward supplementary channel, wherein, in the described step 2, also comprise: described wireless chain protocol module detects the data volume in the described data buffer zone again, and when described data volume surpasses a setting thresholding, determine the scheduling duration and set up forward complement channel to described Call Control Block application.

Useful technique effect of the present invention is:

The inventive method is set up under the condition of flow process not changing general forward complement channel, characteristics according to data service and supplemental channel assignment, under the situation that the data service user is few under contained fan, forward complement channel adopts the scheduling duration Duration of endless duration.This method has obviously reduced the signaling processing overhead of base station system, and the channel assignment of avoiding the frequent assignment of forward complement channel to cause postpones, and has improved the throughput performance of forward complement channel.Under the situation that upstream data speed descends, assignment has guaranteed the resource utilization of base station system than the forward complement channel of low rate in time simultaneously.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Description of drawings

Fig. 1 is the system configuration schematic diagram that travelling carriage is set up forward complement channel for base station of the present invention;

Fig. 2 is that travelling carriage is set up the forward complement channel schematic flow sheet for base station of the present invention;

Whether again Fig. 3 detects the forward complement channel schematic flow sheet of assignment low speed for base station of the present invention.

Embodiment

See also Fig. 1, for base station of the present invention is the system configuration schematic diagram that travelling carriage is set up forward complement channel, this system configuration comprisesportable terminal 10, RLP (Radio Link Protocol, radio link protocol)module 11,Call Control Block 12, Radio Resourcecontrol module 13, also comprise SDM (Space DivisionMultiplexing, space division multiplexing) multiplexing anddemultiplexing distribution module 14;

RLPmodule 11 is set up forward complement channel to CallControl Block 12 applications, and Call Control Block 12 is set up forward complement channel to 13 requests of Radio Resource control module again;

RadioResource control module 13 is the forward complement channel ofportable terminal 10 distribution endless durations or the forward complement channel that limit for length's duration is arranged according to the loading condition of described forward complement channel place contained fan;

SDM multiplexing anddemultiplexing distribution module 14 regularly detects the forward complement channel utilization rate of no limit in the one-period, thereby whether decision initiates the release of forward complement channel, the forward complement channel of assignment low speed again.

See also Fig. 2, for base station of the present invention is that travelling carriage is set up the forward complement channel schematic flow sheet, in conjunction with Fig. 1, this Figure illustrates the flow process of setting up of forward complement channel in the inventive method, the foundation of base station side forward complement channel is whether to initiate forward complement channel byRLP module 11 according to the size decision of data volume in the data buffer zone to set up request.

This flow process is applied to comprise CDMA 2000 base station systems ofportable terminal 10,RLP module 11,Call Control Block 12, Radio Resourcecontrol module 13 and SDM multiplexing anddemultiplexing distribution module 14, when base station system is set up forward complement channel for the mobile subscriber, judge the loading condition of user applies forward complement channel place contained fan, whether can use the scheduling duration Duration of endless duration according to loading condition decision forward complement channel; In the base station system, SDM multiplexing anddemultiplexing distribution module 14 regularly detects the forward complement channel utilization rate of no limit in the one-period, thereby whether decision initiates the release of forward complement channel, the forward complement channel of assignment low speed again.

Specifically may further comprise the steps:

Step 201, beginning;

The data volume thatstep 202,RLP module 11 detect in the data buffer zone surpasses application forward complement channel thresholding, determines scheduling duration Duration, sets up forward complement channel to CallControl Block 12 applications;

Step 203, Call Control Block 12 is set up forward complement channel to 13 requests of Radio Resource control module, and RadioResource control module 13 is calculated the current data user of user's place contained fan and is counted DataUserNum;

Step 204, Radio Resourcecontrol module 13 judge that whether the current data user of contained fan counts DataUserNum less than light thresholding LightLoadThreshold, if then changestep 205, otherwise changestep 206;

In this step, light thresholding is meant that the contained fan data user counts thresholding, and less than this thresholding, forward complement channel adopts endless, otherwise adopt the limit for length is arranged.

Step 205, RadioResource control module 13 are distributed the forward complement channel of endless duration Duration for this user;

Step 206, RadioResource control module 13 are assigned the forward complement channel of limit for length's duration Duration for this user; And

Step 207, flow process finishes.

See also Fig. 3, for base station of the present invention whether again detecting the forward complement channel schematic flow sheet of assignment low speed.In conjunction with Fig. 1,2, describe the forward complement channel that how distributes endless in detail for the user.Flow process may further comprise the steps:

Step 301, beginning;

Step 302, SDM multiplexing anddemultiplexing distribution module 14 calculates the utilization rate FwdSCHUtility of the forward complement channel of no limit in the sense cycle;

Whetherstep 303, SDM multiplexing anddemultiplexing distribution module 14 judge the utilization rate FwdSCHUtility of forward complement channel less than threshold value FSCH_DTX_RLS_USE_RATE, if then changestep 304, otherwise changestep 307;

Step 304, SDM multiplexing anddemultiplexing distribution module 14notice RLP modules 11 stop the forward complement channel framing, and notificationcall control module 12 discharges forward complement channel;

Step 305,Call Control Block 12 notice RadioResource control modules 13 discharge forward complement channel on-air radio resource;

Step 306,RLP module 11 detects the data volume in the data buffer zone again, need to determine whether the application forward complement channel, and scheduling duration Duration;

In this step, when the size of data volume in the data buffer zone surpasses the setting thresholding, need the application complement channel, otherwise, do not need to apply for complement channel.

Step 307, flow process finishes.

Employing has under the situation of limit for length's duration Duration, generally need carry out twice in addition repeatedly scheduling just can finish the transmission of user's bursty data, this is owing to can't predict accurately that in the initial moment RLP module flow of forward burst data causes.Adopt repeatedly frequent supplemental channel assignment like this, increased the processing expenditure of channel assignment, the delay between complement channel is increased, wasted limited on-air radio resource.

The forward complement channel of assignment endless duration Duration of the present invention can reduce the signaling processing overhead of base station system, avoids the frequent assignment of forward complement channel, has eliminated the supplemental channel assignment delay, has improved the air resource utilance.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1. system that improves throughput performance of forward supplementary channel is used to comprise it is characterized in that the CDMA2000 base station system of portable terminal, also comprises: wireless chain protocol module, Call Control Block and Radio Resource control module;

Described wireless chain protocol module is set up forward complement channel to described Call Control Block application, and described Call Control Block is set up forward complement channel to the request of described Radio Resource control module again;

Described Radio Resource control module is the forward complement channel of described portable terminal distribution endless duration or the forward complement channel that limit for length's duration is arranged according to the loading condition of described forward complement channel place contained fan.

2. the system of raising throughput performance of forward supplementary channel according to claim 1, it is characterized in that, also comprise a space division multiplexing demultiplexing distribution module, be used to detect the utilization rate of the forward complement channel of no limit in the one-period, and whether again reach the assignment forward complement channel according to the release request that described utilization rate determines whether to initiate forward complement channel.

3. a method of utilizing the described system of claim 2 to improve throughput performance of forward supplementary channel is characterized in that, comprising:

Step 1 is set up forward complement channel by described wireless chain protocol module to described Call Control Block application, and described Call Control Block is set up forward complement channel to the request of described Radio Resource control module again; And

Step 2 is that described portable terminal distributes the forward complement channel of endless duration or the forward complement channel of limit for length's duration is arranged by described Radio Resource control module according to the loading condition of described forward complement channel place contained fan.

4. the method for raising throughput performance of forward supplementary channel according to claim 3, it is characterized in that, in the described step 1, also comprise: described wireless chain protocol module determines whether to initiate the step that forward complement channel is set up request to described Call Control Block according to the size of data volume in the data buffer zone.

5. the method for raising throughput performance of forward supplementary channel according to claim 4, it is characterized in that, in the described step 1, also comprise: described wireless chain protocol module detects the data volume in the data buffer zone, and when described data volume surpasses application forward complement channel thresholding, determine the scheduling duration and set up forward complement channel to described Call Control Block application.

6. according to the method for claim 4 or 5 described raising throughput performance of forward supplementary channel, it is characterized in that, in the described step 2, also comprise: described Radio Resource control module is obtained the step of the current data user's number of described portable terminal place contained fan.

7. the method for raising throughput performance of forward supplementary channel according to claim 6, it is characterized in that, in the described step 2, also comprise: described Radio Resource control module judges that described data user's number is whether less than the step of a light thresholding, in this way, then be the forward complement channel that described portable terminal distributes the endless duration, otherwise be assigned the forward complement channel of limit for length's duration for described portable terminal.

8. according to the method for claim 4,5 or 7 described raising throughput performance of forward supplementary channel, it is characterized in that, in the described step 2, also comprise: determine whether to initiate the step that forward complement channel discharges by the utilization rate that detects the forward complement channel of no limit in the one-period by described space division multiplexing demultiplexing distribution module.

9. the method for raising throughput performance of forward supplementary channel according to claim 8, it is characterized in that, in the described step 2, also comprise: when described utilization rate during less than a thresholding, described space division multiplexing demultiplexing distribution module notifies described wireless chain protocol module to stop the forward complement channel framing, and notify described Call Control Block to discharge described forward complement channel, described Call Control Block reinforms the on-air radio resource that described Radio Resource control module discharges described forward complement channel.

10. the method for raising throughput performance of forward supplementary channel according to claim 9, it is characterized in that, in the described step 2, also comprise: described wireless chain protocol module detects the data volume in the described data buffer zone again, and when described data volume surpasses a setting thresholding, determine the scheduling duration and set up forward complement channel to described Call Control Block application.

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