CN103874203A

CN103874203A - Uplink-channel distribution method for communication system

Info

Publication number: CN103874203A
Application number: CN201210530565.1A
Authority: CN
Inventors: 王单; 秦琦
Original assignee: Potevio Institute of Technology Co Ltd
Current assignee: Potevio Institute of Technology Co Ltd
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2014-06-18
Anticipated expiration: 2032-12-11
Also published as: CN103874203B

Abstract

The application discloses an uplink-channel distribution method for a communication system. The method includes: for multi-sub-band UE, using other sub-band resources excluding sub-band resources of a PUCCH channel of the UE on first four OFDM signs in a third subframe of wireless frames which are distributed for the UE, all resources on a fifth OFDM sign in the third subframe and all resources of a forth subframe and a fifth subframe as a PUSCH channel of the UE to be distributed to the UE. Through the above-mentioned method, sub-band resources which are not occupied by the PUCCH are distributed to the UE and used as the PUSCH channel so that wastage of frequency domain resources is prevented and transmission performance of the PUSCH is improved.

Description

A kind of up channel distribution method of communication system

Technical field

The application relates to the communication technology, particularly a kind of up channel distribution method of communication system.

Background technology

In the discrete frequency range that is distributed in 223.525MHz～231.65MHz of mandate frequency of power telecom network, totally 40, each bandwidth 25KHz, is referred to as physics subband.Logic subband is one by one corresponding to physics subband 223.525MHz～231.65MHz physics subband.It is that basic fundamental carries effective information that each logic subband adopts OFDM.A user can support list band also can support many subbands sending and receiving, and the UE that ability is the strongest can support the business of 40 subbands.

In current power communication system, on frequency domain, a subband comprises

individual effective subcarrier; In time domain, a subframe comprises 9 OFDM symbols.The PUCCH of subband UE more than one only takies front 4 symbols of two subbands at frequency spectrum edge, and Fig. 1 has provided current power communication system PUCCH channel architecture.As shown in Figure 1, more than one, subband UE accounts for N _subsindividual subband, its PUCCH takies first logic subband (subband 0) and last logic subband (subband N on frequency domain _subs-1), in time domain, account for front 4 symbols of the 3rd subframe of a radio frames.Wherein, the 1st and the 4th OFDM symbol be for transferring ACK/nack message, and the 2nd and the 3rd OFDM symbol are used for transmitting PUCCH RS.On front 4 OFDM symbols of the 3rd subframe, remove subband 0 and subband N that PUCCH takies _subsoutside-1, all the other subbands are idle subband.The unappropriated idle sub band resources of these PUCCH can not be distributed to other UE, is also not yet assigned to the PUSCH channel of this UE, causes the waste of frequency resource.The mandate frequency resource of current power system is very rare, therefore effectively utilizes limited frequency resource to become extremely important.

Summary of the invention

The application provides a kind of up channel distribution method of communication system, can avoid the waste of frequency resource, more effectively utilizes frequency resource.

A up channel distribution method for communication system, comprising:

For many subbands UE, in distributing to the radio frames of this UE on front 4 the OFDM symbols of the 3rd subframe except all resources of other sub band resources as the sub band resources of the PUCCH channel of described UE, all resources, the 4th subframe and the 5th subframe on the 5th OFDM symbol of the 3rd subframe are as the PUSCH channel of described UE, distribute to described UE.

Preferably, on described PUSCH channel,

In described the 3rd subframe, the 4th subframe and the 5th subframe, the resource element of the 5th OFDM symbol is used for transmitting PUSCH reference symbol;

Other PUSCH channel resources except the resource that described PUSCH reference symbol takies of described many subbands UE, for transmitting PUSCH data message.

Preferably, the sub band resources of the described PUCCH channel as described UE is: first and last sub band resources on front 4 the OFDM symbols of described the 3rd subframe.

Preferably, on the PUCCH of described UE channel, resource on the 1st OFDM symbol and the 4th the OFDM symbol of described the 3rd subframe is for loading ACK/nack message, and the resource on the 2nd OFDM symbol and the 3rd the OFDM symbol of described the 3rd subframe is used for carrying PUCCH reference symbol.

As seen from the above technical solution, in the application, for many subbands UE, in distributing to the radio frames of this UE on front 4 the OFDM symbols of the 3rd subframe except all resources of other sub band resources as the sub band resources of the PUCCH channel of described UE, all resources, the 4th subframe and the 5th subframe on the 5th OFDM symbol of the 3rd subframe are as the PUSCH channel of described UE, distribute to this UE.By the way, unappropriated PUCCH channel sub band resources is distributed to this UE as PUSCH channel, thereby avoid the waste of frequency domain resource, and improve the transmission performance of PUSCH.

Brief description of the drawings

Fig. 1 is the PUCCH channel architecture schematic diagram of current power communication system;

Fig. 2 is the up channel structural representation of many subbands UE in the application.

Embodiment

In order to make the application's object, technological means and advantage clearer, below in conjunction with accompanying drawing, the application is described in further details.

The application's basic thought is: utilize the unappropriated idle sub band resources of PUCCH channel to transmit other information, thereby avoid the waste of frequency resource.

At present, for many subbands UE, the resource of its PUSCH channel occupancy comprises: all resources of the resource of rear 5 OFDM symbols, the 4th and the 5th subframe in the 3rd subframe.Wherein, in the 3rd subframe, PUSCH reference symbol is positioned on the 7th OFDM symbol; In the 4th and the 5th subframe, PUSCH reference symbol is positioned on the 5th OFDM symbol.For more effectively improving the transmission performance of PUSCH channel, in the application, PUSCH channel using unappropriated PUCCH channel idle sub band resources as this UE, be used for transmitting PUSCH data, for many subbands UE distributes more PUSCH resource, thereby by the PUSCH channel of expansion, obtain time diversity gain and coding gain, to improve throughput and the transmission performance of PUSCH.

In more detail, the each radio frames in power communication system comprises 5 subframes, and each subframe is 640Ts(1Ts=1/128k).A subframe comprises 9 OFDM symbols, and the 1st OFDM symbol is 72 Ts, and all the other 8 OFDM symbols are respectively 71 Ts.According to the up channel distribution method in the application, for many subbands UE, its PUSCH channel specifically comprises: distribute in the radio frames of this many subband UE all resources of all resources, the 4th subframe and the 5th subframe on other sub band resources, the 5th the OFDM symbol of the 3rd subframe except the sub band resources of the PUCCH channel as this UE on front 4 the OFDM symbols of the 3rd subframe.

Wherein, by visible compared with the resource shared with existing PUSCH channel, in the application using on front the 3rd subframe 4 OFDM symbols except other sub band resources as the sub band resources of the PUCCH channel of UE are also as PUSCH channel, thereby greatly increase the frequency resource of PUSCH channel occupancy, utilize the frequency resource of these increases can greatly improve the throughput of PUSCH channel, obtain time diversity gain and coding gain.

In addition, because the part resource of having expanded front 4 the OFDM symbols of the 3rd subframe is as PUSCH channel, the most simply, in the 3rd subframe, the position of PUSCH reference symbol can still remain unchanged.But consider if still transmit PUSCH reference symbol on the 7th OFDM symbol, the newly-increased PUSCH channel (being front 4 OFDM symbols) of this PUSCH reference symbol distance is far away so, the accuracy of its channel estimating will be affected, thereby affect the demodulation performance of this part PUSCH data.In view of this, in the application, preferably, in the 5th OFDM symbol transmission PUSCH reference signal of the 3rd subframe, thereby improve the demodulation performance of PUSCH.In other resources the resource taking except PUSCH reference symbol on PUSCH channel, transmission PUSCH data.

In this application, it is identical that PUCCH channel resource and existing PUCCH channel resource take situation, do not make and change.That is to say the 3rd, 4,5 subframes of PUSCH and the multiplexing radio frames of PUCCH.The preferred N that supports in concrete above-mentioned the application _substhe up channel structure of many subbands UE of individual subband as shown in Figure 2.The logic subband index that PUCCH takies the 3rd front 4 symbols of subframe be 0 and logic subband index be N _subs-1 resource element.Wherein the 1st symbol and the 4th symbols carry ACK/NACK information, the 2nd symbol and the 3rd symbol are PUCCH reference symbol (RS Reference Signal).In front 4 symbols of PUSCH channel occupancy the 3rd subframe, do not distribute to the logic subband 1 to N of PUCCH _subsrear 5 symbols of-2 resource elements and the 3rd subframe and the 4th subframe and the 5th subframe.The 5th symbol of each subframe is PUSCH RS, and PUSCH data message takies the resource element that is not yet assigned to RS in PUSCH channel.Wherein, the l in Fig. 2 represents time-domain symbol index, and span is the sub-carrier indices that 0～8, k represents frequency domain, and span is

The above-mentioned up channel distribution method being in the application, from above-mentioned distribution method, in the application, make full use of the frequency domain resource that the 3rd radio frames PUCCH channel of many subbands UE do not utilize, distributing to PUSCH channel uses, thereby effectively utilize frequency resource, also improved the ability of system bearing effective information.In addition, PUSCH channel has increased the length of time-domain signal, may obtain time diversity gain.The increase of PUSCH resource, also can increase code length, obtains coding gain.Further, by redistributing of PUSCH RS in the 3rd subframe, be conducive to improve the demodulation performance of PUSCH.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims

1. a up channel distribution method for communication system, is characterized in that, comprising:

2. method according to claim 1, is characterized in that, on described PUSCH channel,

3. method according to claim 1 and 2, is characterized in that, the sub band resources of the described PUCCH channel as described UE is: first and last sub band resources on front 4 the OFDM symbols of described the 3rd subframe.

4. method according to claim 3, it is characterized in that, on the PUCCH of described UE channel, resource on the 1st OFDM symbol and the 4th the OFDM symbol of described the 3rd subframe is for loading ACK/nack message, and the resource on the 2nd OFDM symbol and the 3rd the OFDM symbol of described the 3rd subframe is used for carrying PUCCH reference symbol.