CN101388684A - Code resource distribution method - Google Patents

Abstract

The invention discloses a method for distributing code resources, which comprises: finding out code words which are not distributed and have minimum numbers from the code words on spread-spectrum factor positions which need distributing, and distributing the code words which are found out to a non-high speed physical downlink shared channel. When the method for distributing the code resources which is provided by the invention distributes code words for the non-high speed physical downlink shared channel, since code words which are not distributed and have the minimum numbers are found out from the code words on spread-spectrum factor positions which need distributing, code word distribution collision between a high speed physical downlink shared channel and the non-high speed physical downlink shared channel can be avoided to the maximum, thereby the service quality can be effectively improved, and thereby the user satisfaction degree can be prominently improved.

Description

A kind of code-resource distribution method

Technical field

The present invention relates to Wideband Code Division Multiple Access (WCDMA) (WCDMA) technology, be specifically related to a kind of code-resource distribution method.

Background technology

Supporting high speed downlink packet to insert in (HSDPA) professional WCDMA system, down direction is by high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) transmission data.According to agreement, HS-PDSCH must use spreading factor, and (Spreading Factor SF) is 16 code word; And when having many HS-PDSCH, the employed code word of these many HS-PDSCH must be from C (16,15) beginning continuous distribution.Wherein, C (A, B) expression spreading factor be SF=A (span of A for 16,32,64,128,256}), sequence number be B code word (span of the sequence number of the code word of SF=A be 0,1 ..., A-1}).Generally speaking, RNC can be the professional HS-PDSCH code word of reserving some of HSDPA, and remaining code word can be distributed to non-HS-PDSCH and use.

At present, for the mode of non-HS-PDSCH distribution codeword is generally Random assignment, the employed code word of HS-PDSCH must continuous dispensing in addition, and the code word that causes distributing to HS-PDSCH in order probably has been assigned to non-HS-PDSCH.In this case, if must be the HS-PDSCH distribution codeword, then need to discharge and taken the non-HS-PDSCH that will distribute to the HS-PDSCH code word; If be not the HS-PDSCH distribution codeword, then limited the service application that relates to HS-PDSCH.Obviously, owing to do not have rational non-HS-PDSCH code distribution method at present, make that between HS-PDSCH and the non-HS-PDSCH code assignment taking place probably conflicts; And, under situation about clashing, no matter whether be that HS-PDSCH continues distribution codeword, all will cause the obvious reduction of quality of service, and then reduce user satisfaction.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of code-resource distribution method, conflicts with the code assignment between the non-HS-PDSCH to avoid HS-PDSCH as far as possible, improves quality of service and user satisfaction.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of code-resource distribution method, this method comprises:

In the code word of the spreading factor position that will distribute, search code word still unallocated and that numbering is minimum, give non-high-speed physical downlink shared channel (HS-PDSCH) the code assignment that finds.

The method of searching described code word is:

In the code word of described spreading factor position, search still unappropriated code word, the code word that finds is divided in the codeword set to be allocated, and in this codeword set to be allocated, search the minimum code word of numbering.

Described spreading factor position is: 8 a, position in 16,32,64,128 or 512.

Described non-high-speed physical downlink shared channel (HS-PDSCH) is a DPCH.

As seen, code-resource distribution method provided by the present invention, when being non-HS-PDSCH distribution codeword, owing in the code word of the SF position that will distribute, search code word still unallocated and that numbering is minimum, make HS-PDSCH conflict to be avoided as far as possible with the code assignment between the non-HS-PDSCH, thereby can effectively improve quality of service, and then can obviously improve user satisfaction.

Description of drawings

Fig. 1 is a sign indicating number resource allocation principle schematic of the present invention;

Fig. 2 is the sign indicating number resource allocation flow chart of one embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing the technology of the present invention is described in detail.

Referring to Fig. 1, Fig. 1 is a sign indicating number resource allocation principle schematic of the present invention, shows the code assignment situation (can be example with SF=16 just among Fig. 1 at other SF position distribution codeword also in actual applications) of SF=16 position among Fig. 1.Among Fig. 1, the HS-PDSCH code word that the circle representative of black has distributed, the circle that comprises black shade is represented the non-HS-PDSCH code word of having distributed, the still unappropriated code word of circle representative of white.

When concrete the application, when the code assignment request of receiving at DPCH non-HS-PDSCH such as (DPCH), radio network controller (RNC) is determined to be non-HS-PDSCH distribution codeword, and extract the request SF position that distribution codeword was positioned at from the code assignment request of receiving.Afterwards, RNC search self write down be positioned at described SF position of being asked and the code word that is not assigned with as yet, again the code word that finds is divided in the codeword set to be allocated.

In described codeword set to be allocated, RNC searches the minimum code word of numbering, and with the code assignment that finds give described code assignment request at non-HS-PDSCH.

If the aforesaid operations flow process in conjunction with Fig. 1, then can be enumerated following example:

Suppose currently need be the non-HS-PDSCH distribution codeword of SF=16 position, so current assignable code word comprises: C (16,2), C (16,5), C (16,6), C (16,7), C (16,8), C (16,9), C (16,10) and C (16,11).Next, but from above-mentioned distribution codeword, choose a code word, that is: C (16,2) in SF=16 position number minimum; At this moment, just can give the non-HS-PDSCH of request code word with this code assignment of C (16,2).

The benefit of the mode distribution codeword of application drawing 1 is: distributing SF=X position (X={8,16,32,64,128, during 512}) code word, the code word that non-HS-PDSCH is assigned to is all tried one's best near C (X, 0), the code assignment of HS-PDSCH is to begin from C (16,15) in addition, therefore the code assignment collision probability between HS-PDSCH and the non-HS-PDSCH is quite little, this makes HS-PDSCH conflict and can be avoided as far as possible with the code assignment between the non-HS-PDSCH, thereby can effectively improve quality of service, and then can obviously improve user satisfaction.

As seen, the key operation of avoiding HS-PDSCH to conflict with the code assignment between the non-HS-PDSCH is: seek code word still unallocated and that numbering is minimum in the code word of the SF position that will distribute, give non-HS-PDSCH with the code assignment that finds.If represent above-mentioned key operation, then as shown in Figure 2 in the mode of techniqueflow.Referring to Fig. 2, Fig. 2 is the sign indicating number resource allocation flow chart of one embodiment of the invention, and this flow process may further comprise the steps:

Step 201: in the code word of the SF position that will distribute, search still unappropriated code word, the code word that finds is divided in the codeword set to be allocated.

Step 202: in codeword set to be allocated, search the minimum code word of numbering, give non-HS-PDSCH with this code assignment.

By the above as seen, code-resource distribution method provided by the present invention, when being non-HS-PDSCH distribution codeword, owing in the code word of the SF position that will distribute, search code word still unallocated and that numbering is minimum, make HS-PDSCH conflict to be avoided as far as possible with the code assignment between the non-HS-PDSCH, thereby can effectively improve quality of service, and then can obviously improve user satisfaction.

Claims (4)

1, a kind of code-resource distribution method is characterized in that, this method comprises:

In the code word of the spreading factor position that will distribute, search code word still unallocated and that numbering is minimum, give non-high-speed physical downlink shared channel (HS-PDSCH) the code assignment that finds.

2, method according to claim 1 is characterized in that, the method for searching described code word is:

In the code word of described spreading factor position, search still unappropriated code word, the code word that finds is divided in the codeword set to be allocated, and in this codeword set to be allocated, search the minimum code word of numbering.

3, method according to claim 1 and 2 is characterized in that, described spreading factor position is: 8 a, position in 16,32,64,128 or 512.

4, method according to claim 1 is characterized in that, described non-high-speed physical downlink shared channel (HS-PDSCH) is a DPCH.

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