CN1949681A

CN1949681A - Method for processing service on up and down channel in medium access control layer

Info

Publication number: CN1949681A
Application number: CN 200510112712
Authority: CN
Inventors: 胡灏; 邵飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-10-10
Filing date: 2005-10-10
Publication date: 2007-04-18

Abstract

The invention discloses a downlink channel service processing method in MAC layer, comprising: UTRAN-side MAC layer processes the received service data from special logic channel and sends the processed service data to downlink shared channel; correspondingly, UE-side MAC layer processes service data comining from the downlink shared channel and sends the processed service data to a corresponding special logic channel. And the invention also discloses an uplink channel service processing in MAC layer, comprising: UE-side MAC layer processes the received service data mapped into special logic channel of nonrandom access channel and sends the processed service data to uplink shared channel; correspondingly, UTRAN-side MAC layer processes service data coming from the uplink shared channel and sends the processed data to the special logic channel.

Description

Method for processing business in the MAC layer on the descending and up channel

Technical field

The present invention relates to the professional transmission technique field of wireless communication system, be meant in a kind of media interviews controls (MAC) layer the method for processing business on the up channel in the method for processing business on the down channel and a kind of MAC layer especially.

Background technology

Global system for mobile communications (UTMS) adopts Wideband Code Division Multiple Access (WCDMA) to insert (WCDMA) Radio Transmission Technology on the interface aloft, be illustrated in figure 1 as Radio interface protocols standard in the R6 version of 3GPP agreement, as can be seen from Figure 1, the UTMS air interface is divided into three protocol layer: L1, L2 and L3, correspond respectively to physical layer, data link layer and the network layer of OSI Reference Model, wherein the L2 layer is divided into MAC layer, Radio Link control (RLC) layer, packet data convergence protocol (PDCP) layer and broadcasting/multicast control (BMC) layer again.

The MAC layer is positioned on the physical layer of UMTS Terrestrial radio access network (UTRAN) air interface, has shielded the characteristic of physical transfer medium, and the means of using physical medium are provided for high level.The high-rise logic channel that provides by MAC transmits data and signaling information, on the transmission channel that MAC provides these information mapping to physical layer according to the characteristic of physical medium, be that each transmission channel selects suitable transformat, and carrying out logic channel multiplexing to transmission channel in the case of necessary.

The MAC layer provides the data transport service on the logic channel, at data of different types transmission service, adopted dissimilar logic channels, dissimilar logical channel type information transmitted type differences, the channel of control information transmission is called control channel, and the channel of transport service information is called Traffic Channel.Logic channel can also be divided into dedicated logical channel and common logical.

In addition, the MAC layer also is responsible for the scheduling and the use of transmission channel.Transmission channel is the Service Access Point that physical layer offers the upper strata, and the MAC layer is responsible for dispatching and the transmission channel that uses comprises dedicated channel, shared channel and common signal channel.

On down direction, the MAC layer of UTRAN side is to the scheduling of transmission channel and use and mainly be meant the business on the logic channel is carried out sending to corresponding transmission channel after the Business Processing, transmits downwards by transmission channel then.Business processing flow in the MAC layer of UTRAN side on the down channel as shown in Figure 2, wherein a and b component are the business processing flow to transmitting on the dedicated logical channel, the c component is the business processing flow to transmitting on the common logical, specifically may further comprise the steps:

Step 201a, carry out the switching of transmission channel kinds according to the difference of the service attribute that transmits on the dedicated logical channel, service attribute comprises packet switch domain service and circuit domain business, packet switch domain service need be mapped on the high speed descending sharing channel (HS-DSCH), circuit domain business need be mapped on the dedicated transmission channel (DCH), for the professional execution in step 202a that is mapped on the high speed descending sharing channel; Carry out 202b for the business that is mapped on the dedicated transmission channel.

Step 202a～step 206a, the business that is mapped on the high speed descending sharing channel is at first carried out the multiplexing of logic channel, in multiplexing back business is carried out flow control, after this carry out priority treatment between the user and the priority treatment between the business, after carrying out these processing, carry out the HARQ retransmission process, the business datum that is about to be mapped on the high speed descending sharing channel is sent into the re-transmission buffer memory, and carry out the selection of TFS Transport Format Set, then business datum is sent to corresponding high speed descending sharing channel.

Step 202b～step 204b, the business that switches on the dedicated transmission channel is at first carried out the multiplexing of logic channel, in multiplexing back business is carried out the priority treatment and the scheduling of transmission channel, promptly in TFS Transport Format Set, select different transmission rates etc. according to priority, if after this data of being transmitted are the data of transparent mode then need to encrypt, and send downwards by dedicated transmission channel; If the data of being transmitted are not the data of transparent mode then directly send to corresponding dedicated transmission channel.

Step 201c～step 204c, for the data of transmitting on the common logical, if broadcast multi-broadcasting (MBMS) business, at first for business setting service identification (ID) distinguishing different MBMS business, otherwise do not need this operation; After this carry out the mapping of logic channel to transmission channel, being about to each logic channel is mapped on the corresponding Common transport channel, for the business datum after the mapping, between user and business, dispatch, and be the service selection transformat after the scheduling, send to corresponding Common transport channel then.

The MAC layer of UE side mainly carries out Business Processing to the business datum from transmission channel, concrete handling process as shown in Figure 3, wherein a component is the flow process to handling by the business datum that high speed descending sharing channel received, b branches into the flow process of handling by the business datum that dedicated transmission channel received, c branches into the flow process of handling by the business datum that Common transport channel received, and specifically may further comprise the steps:

Step 301a～step 303a, at first retransmit judgement for business datum from high speed descending sharing channel, then the business datum piece is formed the Service Data Unit (SDU) that the upper strata needs, and behind the demultiplexing that carries out logic channel, business datum is sent to the dedicated logical channel of correspondence.

Step 301b～step 302b, for the demultiplexing that at first carries out logic channel from the business datum of dedicated transmission channel, after being decrypted processing, send to corresponding dedicated logical channel then.

Step 301c～step 302c, at first carry out the mapping of transmission channel to logic channel for business datum from Common transport channel, if MBMS business, need read the ID of the MBMS business of the common logical that is used for definite correspondence, otherwise need not this operation, send to corresponding common logical then.

On up direction, the MAC layer of UE side is to the scheduling of transmission channel and use and mainly be meant the business on the logic channel is carried out sending to corresponding transmission channel after the Business Processing, then by upwards transmission of transmission channel.The flow process of the Business Processing in the MAC layer of UE side on the up channel specifically may further comprise the steps as shown in Figure 4:

Step 401a, the business of transmitting on the dedicated logical channel is switched according to the configuration of RRC, be the business on the dedicated logical channel is mapped to enhancing dedicated channel (E-DCH), DCH channel or Random Access Channel (RACH) channel, for the professional execution in step 402a that is mapped on the E-DCH; Carry out 202b for the business that is mapped on the DCH; For the professional execution in step 402c that is mapped on the RACH.

Step 402a～step 403a, at first carry out cascade and the multiplexing formation transmission block of PDU to being mapped to business on the E-DCH, and the sequence number of transmission block is set, select TFS Transport Format Set, then transmission block is delivered in the re-transmission buffer memory, and transmission block is sent to E-DCH.

Step 402b～step 404b, the business that switches on the DCH is at first carried out the multiplexing of logic channel, select TFS Transport Format Set then,, and upwards send by DCH if after this data of being transmitted are the data of transparent mode then need to encrypt; If the data of being transmitted are not the data of transparent mode then directly send to corresponding DCH.

Step 402c～step 407c, the business that switches on the RACH is at first carried out the multiplexing of logic channel, and, will increase business datum behind the UE identifier then with carry out logic channel from the data of CCCH channel multiplexing to transmission channel (TCTF) for business datum increases the identifier (ID) of UE so that can identify business from different UEs at network side; After this, dispatch according to dedicated logical channel priority carrying out the business datum of TCTF after multiplexing, and after selecting TFS Transport Format Set, carry out access category and select, then business datum is sent to RACH.

The MAC layer of UTRAN side mainly carries out Business Processing to the business datum from transmission channel, and concrete handling process specifically may further comprise the steps as shown in Figure 5:

Step 501a～step 503a, at first carry out the HARQ retransmission process, judge promptly whether the business datum that is received is correct, if then return confirmation to the MAC of UE side layer for business datum from E-DCH; Otherwise return unacknowledged information to the MAC of UE side layer; Carry out the demultiplexing of logic channel then, and the business datum behind the demultiplexing is carried out business data processing, be about to be sent to corresponding dedicated logical channel after business datum rearrangement and the decomposition.

Step 501b～step 502b, for the demultiplexing that at first carries out logic channel from the business datum of DCH, after being decrypted processing, send to corresponding dedicated logical channel then.

Step 501c～step 502c, at first carry out the TCTF demultiplexing, and read the UE identifier, the business datum that is mapped to CCCH is sent to CCCH with the identification different user for business datum from RACH; The business datum that is mapped to dedicated logical channel is carried out the logic channel demultiplexing, and send business datum to corresponding dedicated logical channel.

In such scheme, the transmission channel package is drawn together high-speed downlink shared transmission channel, dedicated transmission channel and Common transport channel on the down direction, transmission channel on the up direction comprises enhancing dedicated channel, dedicated transmission channel and Common transport channel, but the dedicated transmission channel on the upper and lower line direction of up direction all be the transmission be circuit domain business, development along with Radio Transmission Technology, the existence of circuit domain business can be substituted by packet switch domain service, so the existence of the dedicated transmission channel of prior art has caused the loaded down with trivial details and complicated of business processing flow.

In addition, the circuit domain business of having cancelled by the VoIP service bearer of packet domain, and transmits on shared channel in the LTE technology.Because the packet switch domain service that transmits in the former MAC layer is non-delay sensitive business, and on high speed descending sharing channel and enhancing special uplink channel, transmit, and the VoIP business is the delay sensitive business, so it is very high by above-mentioned flow process business to be handled the time delay that will cause the VoIP business in the MAC layer, influenced the service quality of VoIP business.

Summary of the invention

In view of this, the method for processing business on the up channel in the method for processing business on the down channel and a kind of MAC layer is provided to provide in a kind of MAC layer main purpose of the present invention, can simplify the business processing flow of MAC layer.

Be first aspect that achieves the above object, the invention provides the method for processing business on the down channel in a kind of MAC layer, comprising:

The MAC layer of UTRAN side sends to DSCH Downlink Shared Channel after the business datum from dedicated logical channel that receives is handled;

Accordingly, after the MAC layer of UE side will be handled from the business datum on the DSCH Downlink Shared Channel, send to corresponding dedicated logical channel.

Preferably, the MAC layer of described UTRAN side is handled the business datum from dedicated logical channel that receives and is comprised:

The MAC layer of A, UTRAN side carries out the multiplexing of logic channel to the business datum in the dedicated logical channel;

B, carry out mixed automatic fast HARQ according to the service quality QoS attribute of business and retransmit relevant treatment;

C, be that business datum selects transformat;

The MAC layer of described UE side will be handled from the business datum on the DSCH Downlink Shared Channel and comprise:

D, retransmit relevant treatment to carrying out HARQ according to corresponding professional QoS attribute from the business datum of DSCH Downlink Shared Channel;

E, business datum is resolved into the required Packet Data Unit PDU in upper strata, and upload in order;

F, carry out the demultiplexing of logic channel, then the business datum behind the demultiplexing is sent on the corresponding dedicated logical channel.

Preferably, in the described steps A, carry out further comprising before or after logic channel multiplexing: carry out flow control.

Preferably, further comprise before the described step B: between user and business, dispatch.

Preferably, describedly after dispatching between the user and between the business, further comprise:

If the business in the formation is non-delay sensitive type business, this business datum is carried out cascade.

Described DSCH Downlink Shared Channel can be synthetic by high speed descending sharing channel and dedicated transmission channel.

Further, this method comprises:

The MAC layer of UTRAN side sends to corresponding Common transport channel after the business datum from common logical that receives is handled;

The MAC layer of UE side sends to corresponding common logical after the business datum from the Common transport channel that receives is handled.

Preferably, the MAC layer of described UTRAN side is handled the business datum from common logical that receives and is comprised:

The MAC layer of a, UTRAN side receives the business datum on the common logical, if corresponding service is a BroadCast MultiCast Service, then is this business setting service identification, execution in step b then; Otherwise direct execution in step b;

B, carry out the mapping of logic channel, between business, dispatch then to transmission channel;

C, for after the business datum after the scheduling selects transformat, send to corresponding transmission channel;

The MAC layer of described UE side is handled the business datum from the Common transport channel that receives and is comprised:

D, for carrying out the mapping of transmission channel to logic channel from the business datum of Common transport channel, determine the common logical of each Common transport channel correspondence;

Pairing business is a BroadCast MultiCast Service if e is mapped to the business datum of common logical, then reads the sign of this BroadCast MultiCast Service, then this business datum is sent to corresponding common logical; Otherwise directly this business datum is sent to corresponding common logical.

Described DSCH Downlink Shared Channel can also be synthetic by the part Common transport channel in high speed descending sharing channel, dedicated transmission channel and the existing protocol, then

Among the described step B, carry out the multiplexing of logic channel and further comprise afterwards:

Carry out the mapping of logic channel according to the mapping relations of logic channel that sets in advance and transmission channel to transmission channel;

Further comprise behind the described step D:

Carry out the mapping of transmission channel according to the mapping relations of logic channel that sets in advance and transmission channel to logic channel;

Among the described step e, the business datum that is mapped to common logical comprises among the described step D and is mapped to the business datum of common logical in the described steps d.

Further, carry out in the described steps A can comprising before or after logic channel multiplexing: business datum is carried out buffer memory in the buffer area that is provided with, and carry out high-rise PDU retransmission process according to PDU serial number information from UE;

In the described step e, further comprise after business datum resolved into the required PDU in upper strata: the MAC layer that the PDU serial number information that is decomposited is returned to the UTRAN side.

Preferably, described basis from the method that the PDU serial number information of UE carries out high-rise PDU retransmission process is:

According to PDU serial number information, remove the business datum that UE receives in the buffer area, and resend the business datum of the non-delay sensitive type business that UE do not receive from UE.

Preferably, described buffer area is: re-transmission buffer area that is used to retransmit and/or the interim buffer area that is used to switch.

Preferably, described QoS attribute according to business carries out HARQ and retransmits relevant treatment and be:

If described business is non-delay sensitive type business then carries out the HARQ retransmission process; If described business is delay sensitive type business then does not carry out the HARQ retransmission process and directly carry out subsequent step.

Preferably, among the described step B between the user and the method for dispatching between the business be:

Elder generation ranks according to the height of user's priority; For business, rank according to the height of service priority again with same subscriber priority; For the User Priority business all identical, determine the priority of this business in queue queue according to the method for picked at random with service priority.

Just rank according to the priority of business earlier,, rank according to the height of User Priority again for business with identical services priority; For the User Priority business all identical, determine the priority of this business in queue queue according to the method for picked at random with service priority.

Second aspect for achieving the above object the invention provides the method for processing business on the up channel in a kind of media interviews control MAC layer, and this method comprises:

The MAC layer of UE side sends to Uplink Shared Channel after the business datum from the dedicated logical channel that is mapped to nonrandom access channel that receives is handled;

Accordingly, after the MAC layer of UTRAN side will be handled from the business datum on the Uplink Shared Channel, send to corresponding dedicated logical channel.

Preferably, described MAC layer is handled the business datum from the dedicated logical channel that is mapped to nonrandom access channel that receives and is comprised:

The MAC layer of A, UE side is provided with the UE identifier for the business datum in the dedicated logical channel of other transmission channels except that being mapped to Random Access Channel RACH;

B, carry out the mixed fast HARQ relevant treatment that retransmits automatically according to the service quality QoS attribute of business;

Behind C, the selection transformat, business datum is sent to Uplink Shared Channel;

Preferably, the MAC layer of described UTRAN side will be handled from the business datum on the Uplink Shared Channel and comprise:

D, to carrying out the HARQ relevant treatment according to corresponding professional QoS attribute from the business datum of Uplink Shared Channel;

E, carry out User Recognition, then business datum is sent to corresponding dedicated logical channel according to the UE identifier.

Preferably, in the described steps A, for business datum further comprises before or after the UE identifier is set: carry out the business datum relevant treatment;

Accordingly, carry out after the User Recognition according to the UE identifier in the described step e, or further comprise before: carry out the business datum relevant treatment.

Preferably, carrying out the business datum relevant treatment in the described steps A is:

For non-delay sensitive type business, earlier business datum is carried out cascade, then the business datum behind the cascade is multiplexed into transmission block; For delay sensitive type business, do not handle;

Business datum relevant treatment described in the step e is:

For non-delay sensitive type business, business datum is carried out demultiplexing, rearrangement and decomposition; For delay sensitive type business, do not handle.

Further, the Business Processing process on the up channel comprises in the described UE side MAC layer:

A, the business that is mapped to the dedicated logical channel on the RACH is at first carried out the multiplexing of logic channel, and increase the identifier of UE for business datum;

B, will increase business datum behind the UE identifier with carry out logic channel from the data of Common Control Channel CCCH multiplexing to transmission channel;

C, for carry out logic channel to transmission channel the business datum after multiplexing select transformat, and carry out the access category selection, then business datum is sent to RACH;

Business Processing process in the MAC layer of described UTRAN side on the up channel further comprises:

D, at first carrying out logic channel to the transmission channel demultiplexing from the business datum of RACH, and read the UE identifier with the identification different user, the business datum that is mapped to CCCH is sent to CCCH;

E, the business datum that is mapped to dedicated logical channel is carried out the logic channel demultiplexing, and send business datum to corresponding dedicated logical channel.

Preferably, select further to comprise before or after the transformat for business datum: dispatch according to dedicated logical channel priority.

Preferably, being scheduling to described in the steps A: before delay sensitive type business is arranged in.

Preferably, the re-transmission of the HARQ described in step B and step D relevant treatment is:

For non-delay sensitive type business, carry out the HARQ retransmission process; Do not carry out the HARQ retransmission process for delay sensitive type business.

Preferably, the HARQ retransmission process of carrying out described in the step B is: business datum is sent to the re-transmission buffer memory;

The HARQ retransmission process of carrying out described in the step D is: according to whether correctly receiving the situation of business datum to UE side feedback acknowledgment or unacknowledged information.

Be provided with described in the steps A UE identifier method can for: by network the UE identifier is distributed to UE, or generates the UE identifier voluntarily by UE.

By such scheme as can be seen, after MAC layer by the UTRAN side in the method for processing business in the MAC layer of the present invention on the down channel is handled the business datum from dedicated logical channel that receives, send to DSCH Downlink Shared Channel, and after the MAC of UE side layer will be handled from the business datum on the DSCH Downlink Shared Channel, send to corresponding dedicated logical channel, making no longer needs dedicated transmission channel on the down direction, has simplified business processing flow; In addition, remove unnecessary processing steps such as transmission channel kinds switching and encryption in the method for processing business in the MAC layer among the present invention on the down channel, further simplified the business processing flow of MAC layer, reduced the time delay of Business Processing; Also by carrying out different processing with non-delay sensitive type business, guaranteed quality of service among the present invention to the delay sensitive type is professional; Also handle among the present invention, avoided high-rise re-transmission, further reduced the time delay of Business Processing, and guaranteed harmless switching and seamless switching, improved service quality by increasing synchronization caching and retransmitting high-rise PDU; And the present invention is by having increased the mapping of dedicated logical channel and DSCH Downlink Shared Channel, for the situation that a plurality of DSCH Downlink Shared Channels are set in LTE provides the solution of MAC layer to the dedicated service processing in the processing procedure to dedicated channel.

In the method for processing business in the MAC layer of the present invention on the up channel, the MAC layer by the UE side sends to Uplink Shared Channel after the business datum from the dedicated logical channel that is mapped to nonrandom access channel that receives is handled; And accordingly, after the MAC layer of UTRAN side will be handled from the business datum on the Uplink Shared Channel, send to corresponding dedicated logical channel, making no longer needs dedicated transmission channel on the down direction, has simplified business processing flow;

In addition, by to the professional differentiated treatment of the professional and non-delay sensitive type of delay sensitive type, realized satisfied to different business QoS attribute having guaranteed professional quality in the method for processing business in the MAC layer of the present invention on the up channel.

Description of drawings

Fig. 1 is a Radio interface protocols standard in the R6 version of 3GPP agreement;

Fig. 2 is the business processing flow figure on the down channel in the MAC layer of UTRAN side in the prior art;

Fig. 3 is the business processing flow figure on the down channel in the MAC layer of UE side in the prior art;

Fig. 4 is the flow chart of the Business Processing on the up channel in the MAC layer of UE side in the prior art;

Fig. 5 is the flow chart of the Business Processing on the up channel in the MAC layer of UTRAN side in the prior art;

Fig. 6 is the flow chart of the method for Business Processing on the down channel in the MAC layer of UTRAN side of the present invention;

Fig. 7 is the flow chart of the method for Business Processing on the down channel in the MAC layer of UE side of the present invention;

Fig. 8 is the flow chart of the Business Processing on the down channel in the MAC layer of UTRAN side among method for processing business first embodiment on the down channel in the MAC layer of the present invention;

Fig. 9 is the flow chart of the Business Processing on the down channel in the MAC layer of UE side among method for processing business first embodiment on the down channel in the MAC layer of the present invention;

Figure 10 is the flow chart of the Business Processing on the down channel in the MAC layer of UTRAN side among method for processing business second embodiment on the down channel in the MAC layer of the present invention;

Figure 11 is the flow chart of the Business Processing on the down channel in the MAC layer of UE side among method for processing business second embodiment on the down channel in the MAC layer of the present invention;

Figure 12 is the flow chart of the method for processing business on the up channel in the MAC layer of UE side of the present invention;

Figure 13 is the flow chart of the method for processing business on the up channel in the MAC layer of UTRAN side of the present invention;

Figure 14 carries out the flow chart of Business Processing for the MAC layer of UE side in the method for processing business specific embodiment on the up channel in the MAC layer of the present invention;

Figure 15 carries out the flow chart of Business Processing for the MAC layer of UTRAN side in the method for processing business specific embodiment on the up channel in the MAC layer of the present invention.。

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.

Main thought of the present invention is, on the down direction, dedicated logical channel all is mapped to DSCH Downlink Shared Channel; On the up direction, the dedicated logical channel that is mapped to nonrandom access channel all is mapped to Uplink Shared Channel.Thereby can remove dedicated transmission channel, simplify the business processing flow in the MAC layer.The present invention can be applied in the LTE technology.

Respectively the method for processing business on the up channel in method for processing business on the down channel in the MAC layer and the MAC layer is described below.

On down direction, the MAC layer of UTRAN side will transmit by DSCH Downlink Shared Channel after will handling from the business datum of special-purpose logic channel; Accordingly, the MAC layer of UE side will transmit by dedicated logical channel after will handling from the business datum on the DSCH Downlink Shared Channel.

The flow process of in the MAC layer of above-mentioned UTRAN side the business datum of dedicated logical channel being handled may further comprise the steps as shown in Figure 6:

The MAC layer of step 601, UTRAN side carries out the multiplexing and flow control of logic channel to the business datum in the dedicated logical channel;

Step 602, dispatching between the user and between the business;

Step 603, carry out the HARQ retransmission process according to the QoS attribute of business datum;

Behind step 604, the selection transformat, business datum is sent to DSCH Downlink Shared Channel.

In the step 601 of above-mentioned Fig. 6, can carry out the multiplexing of logic channel earlier, carry out flow control then; Also can carry out flow control earlier and then carry out the multiplexing of logic channel.In addition, in step 601, can also increase synchronization caching and retransmit high-rise PDU and handle, increase synchronization caching and retransmit high-rise PDU and handle and to exchange with the order of the multiplexing and flow control of logic channel.

Accordingly, the MAC layer of above-mentioned UE side may further comprise the steps to the flow process handled from the business datum on the DSCH Downlink Shared Channel as shown in Figure 7:

Step 701, to carrying out the HARQ retransmission process according to the QoS attribute of business datum from the business datum of DSCH Downlink Shared Channel;

Step 702, business datum is resolved into the required PDU in upper strata, and upload in order;

Step 703, carry out the demultiplexing of logic channel.

In above-mentioned steps 603 and the step 701, carry out the HARQ retransmission process can for whether being the attribute of delay sensitive business, if the delay sensitive business is not then carried out the HARQ retransmission process according to business according to the QoS attribute of business datum; If be non-delay sensitive business then carry out the HARQ retransmission process.

Among the present invention, the DSCH Downlink Shared Channel on the down direction can be by synthetic with original HS-DSCH and DCH, can also be synthetic by the original Common transport channel of original HS-DSCH, DCH and a part.The Common transport channel that specifically is synthesized in the DSCH Downlink Shared Channel need be determined according to actual conditions and business demand.In this case, in the flow process of above-mentioned UTRAN side Fig. 6, also need to increase the mapping step of logic channel to transmission channel, make the data on the logic channel can send on the corresponding correct down channel, this step can be increased in before the above-mentioned steps 603; In addition, in this case, the business datum transmitted on the common logical after carrying out processing same as the prior art, if corresponding transmission channel is synthesized in the DSCH Downlink Shared Channel, is then needed to send to the DSCH Downlink Shared Channel of correspondence after selecting transformat.Correspondingly, in the flow process of UE side Fig. 7, also need to increase the mapping step of transmission channel to logic channel.

Below by specific embodiment the method for processing business on the down channel in the MAC layer of the present invention is elaborated.

In the first embodiment of the present invention, DSCH Downlink Shared Channel on the down direction is synthetic by HS-DSCH of the prior art and DCH, then all dedicated logical channel all are mapped to DSCH Downlink Shared Channel, and common logical is same as the prior art, are mapped to corresponding Common transport channel.

Be illustrated in figure 8 as the flow process of the Business Processing that the UTRAN side is carried out on the down direction in the MAC layer, wherein, handling process to common logical, being step 801b to Fig. 2 of step 804b and prior art, step 201c is identical to step 204c, here no longer elaborate, and the processing of dedicated logical channel be may further comprise the steps:

Step 801a, carry out multiplexing to dedicated logical channel.Owing in LTE, have only DSCH Downlink Shared Channel and Common transport channel, transmit so in the present embodiment dedicated logical channel all is mapped on the DSCH Downlink Shared Channel, therefore need carry out the multiplexing of dedicated logical channel, a plurality of dedicated logical channel are multiplexed on the DSCH Downlink Shared Channel.

Step 802a, carry out flow control.Owing to need to carry out metadata cache in data transmission procedure, and the space of carrying out buffer memory is limited, so need carry out flow control, loses with overflowing to avoid the congested of data.

Step 803a, business datum is carried out synchronization caching and high-rise PDU retransmission process.

Because heterogeneous networks is internodal mutual, as RNC, NodeB etc., make the propagation delay time of data increase, when especially between the base station, switching, may cause losing of data for delay sensitive type business, and for non-delay sensitive type business, when low layer retransmits as HARQ retransmits can not solve error of transmission the time, need enable high-rise re-transmission, retransmit as rlc layer, and high-rise the re-transmission carried out between RNC or above node of RNC and NodeB, can cause long time delay.Therefore, in the MAC of NodeB layer, increase the high-rise PDU of synchronization caching in the present embodiment and retransmit the function of high-rise PDU, be used for handling HARQ and retransmit indeterminable erroneous transmissions, because the re-transmission of this step is just carried out between UE and NodeB, needn't pass through the upper layer network node, thereby reduce time delay.Specifically can be by re-transmission buffer area that in the MAC of NodeB layer, is provided for retransmitting and/or the interim buffer area that is used to switch, when carrying out this step, the PDU data are sent into the corresponding retransmission buffer area and/or carried out buffer memory in the buffer area temporarily, receive send from the UE side comprise the status PDU of the PDU serial number information that is received after, remove the PDU that UE receives in re-transmission buffer area or the interim buffer area according to this status PDU, in addition, also need to resend the PDU that retransmits the non-delay sensitive type business that UE does not receive in buffer area or the interim buffer area.

Above-mentioned steps 801a can exchange to the concrete execution sequence of three steps of step 803a, can be step 801a, step 803a and step 802a as execution sequence, or step 802a, step 801a and step 803a, or step 802a, step 803a and step 801a, or step 803a, step 801a and step 802a, or step 803a, step 802a and step 801a.

Step 804a, carry out business and user's queuing.Dedicated service need dispatched between the user and between the business, promptly according to user's the priority and the priority of business, or according to the processing of ranking of other preset rule, concrete rule and processing method can adopt dispatching algorithm same as the prior art, also can determine, also can determine by operator according to concrete service conditions and user situation.For example can be at first with user's priority as the queuing priority Rule of judgment, and then utilize service priority to rank, then the priority of the business that User Priority is high more in queue queue is high more; For business with same subscriber priority, also need rank according to the height of service priority, the priority of business in queue queue that service priority is high is higher; And if User Priority is all identical with service priority, then determine the priority of this business in queue queue according to the method for picked at random.Can also be earlier with the priority of business as the queuing priority Rule of judgment, and then utilize User Priority to rank, this dispatching algorithm mainly ensures with the QoS of business and is preferably principle.In addition, in this step, for the non-delay sensitive type business in the queue queue, first cascade is formed transmission block, in step 805a the transmission block of forming is sent to the re-transmission buffer memory then; And in step 805a, do not carry out any processing for the delay sensitive type business in the queue queue, and direct execution in step 806a;

Step 805a, carry out the HARQ relevant treatment.

In this step, for the business in the business queuing formation, if this business is non-delay sensitive type business, promptly error rate sensitiveness business then needs to carry out HARQ and handles, and is about to business datum and sends in the re-transmission buffer memory, then execution in step 806a; Otherwise, if this business is the delay sensitive business, does not then need to carry out HARQ and handle, so direct execution in step 806a;

Step 806a, select TFS Transport Format Set and be used for the resource of DSCH Downlink Shared Channel, and business is sent to DSCH Downlink Shared Channel.

Be illustrated in figure 9 as the flow process of carrying out Business Processing in the MAC layer of UE side on the down direction, wherein, handling process to Common transport channel, be step 901b with Fig. 3 of step 902b and prior art in step 301c identical with step 302c to the handling process of common logical, here no longer elaborate, and the processing of DSCH Downlink Shared Channel be may further comprise the steps:

The MAC layer of step 901a, UE side at first carries out the HARQ relevant treatment to the business datum that receives after receiving business datum from DSCH Downlink Shared Channel.If the business datum that is received is non-delay sensitive type business, then needing to carry out HARQ handles, promptly according to whether correctly the situation of reception to UTRAN side feedback acknowledgment or unacknowledged information, after the UTRAN side joint is received confirmation, remove the data in the HARQ buffer area, after the UTRAN side joint is received unacknowledged information, resend the data in the HARQ buffer area; Otherwise,, then do not need to carry out HARQ and handle, directly execution in step 902a if this business is a delay sensitive type business.

Step 902a, carry out the business datum piece and handle.Because the business datum that the MAC layer receives from transmission channel is the data block that cascade forms, and such data block can't be handled in the upper strata, so UE resolves into the required PDU in upper strata with these data blocks, and upload in order, in addition, UE also returns to the serial number information of the PDU that decomposited the MAC layer of UTRAN side in this step by status PDU.

Step 903a, logic channel demultiplexing.Because it is a plurality of that the dedicated logical channel of corresponding DSCH Downlink Shared Channel has,, deliver to corresponding dedicated logical channel with the PDU after will decomposing so need carry out the logic channel demultiplexing.

It more than is explanation to method for processing business first embodiment in the MAC layer on the down direction of the present invention.In the present invention, original part Common transport channel can also be synthesized in the DSCH Downlink Shared Channel, then because when DSCH Downlink Shared Channel and logic channel shine upon, need between dedicated logical channel and common logical, to distinguish, therefore, in to the processing procedure of dedicated logical channel, also need to carry out the mapping of logic channel to transmission channel.In addition, in common logical, its corresponding transmission channel is divided into the local channel of DSCH Downlink Shared Channel, after carrying out handling process same as the prior art, promptly needs business datum is sent on the corresponding shared transmission channel after finishing the TFS Transport Format Set selection.Be described in greater detail below by second embodiment.

In the MAC layer among second embodiment of method for processing business, the shared transmission channel on the down direction is synthetic by HS-DSCH of the prior art, DCH and a part of original Common transport channel on the down direction of the present invention.

In the present embodiment, the flow process of carrying out Business Processing on the down direction in the MAC layer of UTRAN side as shown in figure 10, wherein step 1001a is identical to step 804a with step 801a among Fig. 8 to step 1004a, after step 1004a carries out user and business queuing, owing in the present embodiment original part Common transport channel has been synthesized in the DSCH Downlink Shared Channel, so for Business Processing part from dedicated logical channel, need execution in step 1005a in the present embodiment, according to the mapping relations of predefined logic channel and transmission channel, carry out the mapping of logic channel to transmission channel.In the mapping relations of predefined logic channel and transmission channel, the pairing transmission channel of common logical is consistent with prior art, is that original part common logical corresponding transmission channel is DSCH Downlink Shared Channel in the present invention; And dedicated logical channel is also corresponding with DSCH Downlink Shared Channel.

After this step 1008a and step 1007a are identical with step 806a with step 805a among Fig. 8.

In addition, in Figure 10, processing section for common logical, substantially with Fig. 8 in identical to the processing section of common logical, difference is, when carrying out logic channel to the mapping of transmission channel in step 1002b, because the original Common transport channel of part is synthesized to DSCH Downlink Shared Channel, so a part of common logical has been mapped to corresponding Common transport channel, and a part of common logical has been mapped to corresponding DSCH Downlink Shared Channel; Correspondingly, behind step 1004b, in the common logical, the business datum of corresponding DSCH Downlink Shared Channel need send to corresponding DSCH Downlink Shared Channel, and the business datum of corresponding Common transport channel need send to corresponding Common transport channel.

The flow process of the Business Processing of carrying out in the MAC layer of UE side on the down direction in the present embodiment as shown in figure 11, the business datum from DSCH Downlink Shared Channel of UE side MAC layer to receiving needs differentiated treatment.Be that business datum on the DSCH Downlink Shared Channel of common logical needs execution in step 1101b for the counterlogic channel, mapping relations according to predefined transmission channel and logic channel, carry out the mapping of transmission channel, concrete mapping relations consistent with among the above-mentioned steps 805a to logic channel; Be the business datum on the DSCH Downlink Shared Channel of dedicated logical channel for the counterlogic channel, need execution in step 1101a to carry out HARQ and handle that this step specific implementation is identical with step 701a.In addition, behind execution in step 1101a, need execution in step 1102a, carry out the mapping of transmission channel to logic channel, to determine corresponding logic channel, mapping ruler among the step 1102a is consistent with the mapping ruler among the above-mentioned steps 802b, after this execution in step 1103a and step 1104a, these two steps respectively with Fig. 9 in step 902a identical with step 903a.

It more than is detailed description to method for processing business in the MAC layer on the down direction of the present invention.Again method for processing business in the MAC layer on the up direction of the present invention is elaborated below.

On up direction, the MAC layer of UE side sends to the shared channel on the up direction, i.e. Uplink Shared Channel after the business datum from the dedicated logical channel that is mapped to nonrandom access channel that receives is handled; Accordingly, after the MAC layer of UTRAN side will be handled from the business datum on the Uplink Shared Channel, send to corresponding dedicated logical channel.

Be the flow chart of the Business Processing on the up channel in the MAC layer of UE side as shown in figure 12, specifically may further comprise the steps:

Step 1201, for from the business except that being mapped to RACH in the dedicated logical channel, carry out business datum relevant treatment and scheduling according to the QoS attribute of business;

Step 1202, identifier is set for UE;

Step 1203, carry out HARQ according to the QoS attribute of business and retransmit relevant treatment

Step 1204, select behind the transformat business is sent to the Uplink Shared Channel on the up direction.

Be the flow chart of the Business Processing on the up channel in the MAC layer of UTRAN side as shown in figure 13, specifically may further comprise the steps:

The MAC layer of step 1301, UTRAN side carries out HARQ to the business datum that receives and retransmits relevant treatment after receiving business datum from Uplink Shared Channel;

Step 1302, the user is discerned according to the UE identifier in the business datum;

Step 1303, the business datum relevant treatment of carrying out are sent to business datum corresponding dedicated logical channel then.

In above-mentioned flow process shown in Figure 12, step 1201 and step 1202 can be exchanged, promptly can first execution in step 1202, and back execution in step 1201; Accordingly, in flow process shown in Figure 13, then need first execution in step 1302, back execution in step 1301.

Below by specific embodiment the method for processing business on the up channel in the MAC layer of the present invention is described in detail.

In the specific embodiment of the method for processing business in MAC layer of the present invention on the up channel, uplink transport channel comprises Uplink Shared Channel and RACH, wherein CCCH is mapped to RACH, a dedicated logical channel part is mapped to RACH, the dedicated logical channel of mapping RACH is same as the prior art, and remaining dedicated logical channel is mapped to Uplink Shared Channel.

Be the flow process of the Business Processing that the UE side is carried out in the MAC layer on the up direction as shown in figure 14.Wherein, same as the prior art to the handling process of the dedicated logical channel that is mapped to RACH and CCCH, promptly step 1401b step 402c to Fig. 4 of step 1406b and prior art is identical to step 407c, no longer elaborates here.And the processing of the dedicated logical channel that is mapped to Uplink Shared Channel be may further comprise the steps:

Step 1401a, business datum relevant treatment and scheduling.In this step, for the different business datum of QoS attribute, the business data processing mode difference of being carried out, for example, for non-delay sensitive type business such as stream class, interactive class and background class traffic, can carry out cascade to these business datums earlier, then the business datum behind the cascade is multiplexed into transmission block; And for delay sensitive type business such as session services, do not handle; Dispatch according to the priority of business then, for example session service belongs to delay sensitive type business, so priority is the highest, should come during scheduling before.

Step 1402a, identifier is set for UE.Since in the present embodiment dedicated logical channel has been mapped to Uplink Shared Channel, thus need increase the UE identifier for business, so that the UTRAN side can be discerned the business from different UEs.Concrete method of adding the UE identifier can be to be given UE or produced voluntarily by UE etc. by network allocation.

The order of above-mentioned steps 1401a and step 1402a can be exchanged.

Step 1403a, HARQ retransmit relevant treatment.In this step,,, need the HARQ retransmission process, be about to business datum and be sent to the re-transmission buffer memory if corresponding service is a delay sensitive type business for the business datum on the dedicated logical channel; And do not handle for non-delay sensitive type business.

Step 1404a, select TFS Transport Format Set and be used for the resource of Uplink Shared Channel, and business is sent to Uplink Shared Channel.

Carry out the flow process of Business Processing as shown in figure 15 in the MAC layer for UTRAN side on the up direction, wherein, handling process to RACH, be step 1501b with Fig. 5 of step 1506b and prior art among step 502c and the step 5015c handling process to RACH identical, here no longer elaborate, and the processing of Uplink Shared Channel be may further comprise the steps:

The MAC layer of step 1501a, UTRAN side at first carries out HARQ to the business datum that receives and retransmits relevant treatment after receiving business datum from Uplink Shared Channel.If the business datum that is received is non-delay sensitive type business, then needing to carry out HARQ handles, promptly according to whether correctly the situation of reception to UE side feedback acknowledgment or unacknowledged information, after the UE side joint is received confirmation, remove the data in the HARQ buffer area, after the UE side joint is received unacknowledged information, resend the data in the HARQ buffer area; Otherwise,, then do not need to carry out HARQ and handle, directly execution in step 1502a if this business is a delay sensitive type business.

Step 1502a, identification user.Because the UTRAN side receives the business datum from different UEs on Uplink Shared Channel, so need be according to the identification of the UE identifier in business datum user.

Step 1503a, business datum relevant treatment.In this step, non-delay sensitive type service needed is carried out demultiplexing, rearrangement and decomposition etc. to business datum, the business datum after will decomposing is then delivered to corresponding logic channel; Directly be sent to corresponding dedicated logical channel for delay sensitive type business.

If in flow process shown in Figure 14, the execution in step 1402a of elder generation, back execution in step 1401a, then in this flow process, first execution in step 1503a, execution in step 1502a then, then in step 1503a, for non-delay sensitive type business, business datum carried out demultiplexing, rearrangement and decomposition after, execution in step 1502a is according to the identification of the UE identifier in business datum user; For delay sensitive type business, business datum is not handled, directly execution in step 1502a according to the identification of the UE identifier in business datum user, behind execution of step 1502a, is sent to corresponding dedicated logical channel with business datum then.

More than be explanation, in concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition method of the present invention to the specific embodiment of the invention.Therefore be appreciated that according to the specific embodiment of the present invention just to play an exemplary role, not in order to restriction protection scope of the present invention.

Claims

1, the method for processing business on the down channel in a kind of media interviews control MAC layer is characterized in that this method comprises:

Accordingly, the MAC layer of UE side sends to corresponding dedicated logical channel after the business datum from the DSCH Downlink Shared Channel that receives is handled.

According to the method for claim 1, it is characterized in that 2, the MAC layer of described UTRAN side is handled the business datum from dedicated logical channel that receives and comprised:

C, be that business datum selects transformat;

The MAC layer of described UE side is handled the business datum from the DSCH Downlink Shared Channel that receives and is comprised:

3, method according to claim 2 is characterized in that, in the described steps A, carries out further comprising before or after logic channel multiplexing: carry out flow control.

4, according to claim 2 or 3 described methods, it is characterized in that, further comprise before the described step B: between user and business, dispatch.

5, method according to claim 4 is characterized in that, further comprises after dispatching between the user and between the business among the described step B:

6, method according to claim 1 and 2 is characterized in that, described DSCH Downlink Shared Channel is synthetic by high speed descending sharing channel and dedicated transmission channel.

7, method according to claim 1 and 2 is characterized in that, this method further comprises:

8, method according to claim 7 is characterized in that, the MAC layer of described UTRAN side is handled the business datum from common logical that receives and comprised:

9, method according to claim 8 is characterized in that, described DSCH Downlink Shared Channel is synthetic by the part Common transport channel in high speed descending sharing channel, dedicated transmission channel and the existing protocol, then

Further comprise behind the described step D:

10, method according to claim 2, it is characterized in that, carry out in the described steps A further comprising before or after logic channel multiplexing: business datum is carried out buffer memory in the buffer area that is provided with, and carry out high-rise PDU retransmission process according to PDU serial number information from UE;

11, method according to claim 10 is characterized in that, described basis from the method that the PDU serial number information of UE carries out high-rise PDU retransmission process is:

12, method according to claim 10 is characterized in that, described buffer area is: re-transmission buffer area that is used to retransmit and/or the interim buffer area that is used to switch.

13, method according to claim 2 is characterized in that, described QoS attribute according to business carries out HARQ re-transmission relevant treatment and is:

14, method according to claim 2 is characterized in that, among the described step B between the user and the method for dispatching between the business be:

15, method according to claim 2 is characterized in that, among the described step B between the user and the method for dispatching between the business be:

16, the method for processing business on the up channel in a kind of media interviews control MAC layer is characterized in that this method comprises:

17, method according to claim 16 is characterized in that, described MAC layer is handled the business datum from the dedicated logical channel that is mapped to nonrandom access channel that receives and comprised:

The MAC layer of described UTRAN side will be handled from the business datum on the Uplink Shared Channel and comprise:

18, method according to claim 17 is characterized in that, in the described steps A, for business datum further comprises before or after the UE identifier is set: carry out the business datum relevant treatment;

19, method according to claim 18 is characterized in that, carries out the business datum relevant treatment in the described steps A to be:

Business datum relevant treatment described in the step e is:

20, method according to claim 18 is characterized in that, the Business Processing process in the described UE side MAC layer on the up channel further comprises:

21, method according to claim 20 is characterized in that, among the described step c, for business datum is selected further to comprise before or after the transformat: dispatch according to dedicated logical channel priority.

22, method according to claim 21 is characterized in that, being scheduling to described in the steps A: before delay sensitive type business is arranged in.

23, method according to claim 17 is characterized in that, the HARQ described in step B and the step D retransmits relevant treatment and is:

24, method according to claim 23 is characterized in that, the HARQ retransmission process of carrying out described in the step B is: business datum is sent to the re-transmission buffer memory;

25, method according to claim 17 is characterized in that, the method that the UE identifier is set described in the steps A is: by network the UE identifier is distributed to UE, or generate the UE identifier voluntarily by UE.