CN1756258A

CN1756258A - Information transmission method

Info

Publication number: CN1756258A
Application number: CNA2005100073145A
Authority: CN
Inventors: 丁颖哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-09-28
Filing date: 2005-02-04
Publication date: 2006-04-05
Anticipated expiration: 2025-02-04
Also published as: CN100355258C

Abstract

The invention discloses a information transmission method. Wherein, on transmitter, treating periodic repeat transmitted information and not periodic information to package into data unit with SN set by independent SN space respectively and transmit by different logical channel; on receiver of wireless communication system, receiving and processing respectively different information. Besides, if receiving SDU information for preferential treatment, interrupting current SDU process. This invention can simplify information transmission treatment process, decreases error rate and cost, and improves system integral performance.

Description

Information transferring method

Technical field

The present invention relates to the information transmission technology, relate in particular to the method for MBMS transmission control information in the multimedia broadcast/group broadcast service (MBMS, Multimedia Broadcast/Multicast Service).

Background technology

In mobile communication network, multicast and broadcasting are a kind of technology that transmits data from a data source to a plurality of targets.In traditional mobile communication network, sub-district multicast service or broadcasting service (CBS, Cell BroadcastService) allow low bit rate data to share broadcast channel to all users' transmissions by the sub-district, and this kind business belongs to information series business.

Now, people no longer are satisfied with phone and messaging service to the demand of mobile communication, and along with the fast development of internet (Internet), a large amount of mobile multi-media services emerge.The some of them mobile multi-media service requires a plurality of users can receive identical data, for example video request program, television broadcasting, video conference, online education, interactive game etc. simultaneously.These mobile multi-media services are compared with general data service, have characteristics such as data volume is big, longer duration, delay sensitive.Present Internet protocol (IP) multicast and broadcast technology only are applicable to wired IP communication network, be not suitable for mobile communication network, because mobile communication network has particular network structure, functional entity and wave point, these are all different with the wire communication IP network.

In order to effectively utilize the mobile communication network resource, third generation mobile global standards tissue (3GPP) has proposed the MBMS of mobile communication network, thereby in mobile communication network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, the interface resource of especially eating dishes without rice or wine.The MBMS that 3GPP proposes can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize the multicast and the broadcasting of high-speed multimedia business, and this has complied with the trend of following mobile data development undoubtedly.

Fig. 1 is the system assumption diagram of MBMS, as shown in Figure 1, in order to support the MBMS business, in mobile communication network, increased the mobile network functional entity newly: broadcast multicast service center (BM-SC), be used for authorizing and initiating the MBMS bearer service at mobile communication network, and plan transmits the MBMS content to schedule, is content provider's inlet.In addition, in order to support the MBMS business, support node (SGSN), Gateway GPRS Support Node functional entitys such as (GGSN) that user terminal (UE), Universal Mobile Telecommunications System (UMTS) land radio access web (UTRAN), global system for mobile communications/global evolution strengthen data transfer rate (GSM/EDGE) wireless access network (GERAN), service universal grouping wireless electric industry affair (GPRS) strengthen, and have increased the relevant function of MBMS.

MBMS comprises multicast pattern and broadcast mode.Multicast pattern needs the corresponding multicast group of the signatory adding of user, carries out activation of service, and produces corresponding charge information; Broadcast mode does not then need the signatory adding of user both can carry out activation of service.Because it is different that multicast and broadcast mode exist, so cause also difference of its operation flow on business demand.

Fig. 2 is a MBMS multicast pattern business process map, and its flow process comprises successively: signatory, service statement, user add, session begins, MBMS notifies, data transmission, conversation end and user withdraw from.

Fig. 3 is a MBMS broadcast mode business process map, and its flow process comprises successively: service statement, session begin, MBMS notifies, data transmit, conversation end.

Above-mentioned data transfer phase in multicast pattern business and broadcast mode business, the MBMS business is transmitted information between UTRAN and UE mode has two kinds of patterns: put multiple spot (PTM, Point toMultipoint) pattern and point-to-point (PTP, Point to Point) pattern.The PTM pattern sends identical data by MBMS point-to-multipoint service channel (MTCH), and all add multicast service or can receive the interested UE of broadcasting service; Ptp mode sends data by Dedicated Traffic Channel (DTCH), has only a corresponding UE to receive.

In MBMS PTM transmission mode, relevant controlled in wireless information, comprise business information, access information, radio bearer information, FLC information etc., all by Radio Resource control (RRC, Radio ResourceControl) layer passes through logic channel, be that the MBMS point sends to multiple spot control channel (MCCH, MBMSpoint-to-multipoint Control Channel).Fig. 4 is the protocol stack structure figure of MCCH, and as shown in Figure 4, the protocol element of MCCH from top to bottom is followed successively by: rrc layer, wireless chain control layer (RLC), media access control layer (MAC), physical layer (PHY).

Fig. 5 is the mapping relations figure of the FACH passage of the logical channel of MAC layer and physical layer, as shown in Figure 5, in existing systems, MCCH information, be that the control information of MBMS all is mapped on forward access channel (FACH, the Forward Access Channel) transmission channel and sends.

Fig. 6 is a MCCH transmission of Information scheduling graph, and as shown in Figure 6, MCCH information is based on that the mode of fixed schedule transmits.And in order to improve reliability, UTRAN need repeat to send MCCH information.The cycle that repeats to send MCCH information is " repetition period ", and complete MCCH information can periodically be sent according to " repetition period "." modification cycle " then is defined as the repetition period of integral multiple, all will make amendment to MCCH information in each modification cycle.The access information of MBMS can periodically be sent according to " access information cycle ", and " access information cycle " is that the integer of repetition period is cut apart.

MCCH information is divided into criteria information and non-criteria information again.Wherein, criteria information is made up of MBMS information of adjacent cells, MBMS business information, MBMS radio bearer information, and the information for needing the periodicity emphasis recurrence to send, and the content that is sent in each repetition period is constant, can only in the modification cycle, when sending for the first time, MCCH information just can be modified; Non-criteria information is meant the MBMS access information, and the information for not needing the periodicity emphasis recurrence to send, and can revise at any time.

In the prior art scheme, RLC adopts Unacknowledged Mode (UM) to transmit MCCH information, and uses same RLC UM entity that criteria information and non-criteria information are transmitted by a MCCH logic channel.Referring to Fig. 7, be the transmission means figure of MBMS control information.In the prior art, the transmission method of MBMS control information mainly comprises the process of transmitting of the RLC UM entity of transmit leg (Sender), and the receiving course of recipient (Receiver) RLC UM entity.Can send one or several PDU in each Transmission Time Interval, MAC determines size and the number of PDU in each Transmission Time Interval.

At present, the process of transmitting of unacknowledged mode data protocol Data Unit (UMD PDU) is: after transmit leg RLC UM entity received high-rise unacknowledged mode data transmission request, the RLC Service Data Unit (SDU) that the transmit leg scheduling receives from high level sent; Send if there are one or more RLC SDU to be scheduled, then RLC UM entity notifies low layer to receive the data that comprise SDU number and size from high level earlier; RLC UM entity to the SDU segmentation, if possible also carries out cascade according to the PDU size of low layer indication then; Afterwards, it is VT (US) that the sequence number territory is set, for each SDU that finishes in UMD PDU is provided with the Length Indication territory; At last, submitting the UMD PDU of the number of asking to is the MAC layer to low layer, and for each UMD PDU that is submitted to low layer upgrades VT (US), simultaneously, buffering is not submitted to the SDU of low layer.

The receiving course of UMD PDU is: after recipient RLC UM entity was received one group of UMD PDU from low layer, this RLC UM entity upgraded VR (US) according to the UMD PDU that receives; If the renewal step-length of VR (US) is not equal to 1, then be discarded in the SDU that segmentation is arranged among the UMD PDU that loses, otherwise the UMD PDU that reorganization receives is RLC SDU, and the RLC SDU after the submission reorganization is a rrc layer to high level.

Specifically, the transmission flow of transmit leg RLC UM entity is carried out following steps after beginning when the previous modification cycle:

Steps A 1, current modification cycle, in first repetition period, the high level of MCCH, i.e. the RRC control information that will need to send sends to RLC UM entity by SDU, after RLC UM entity receives SDU, execution in step A2.

Steps A 2, RLC UM entity carry out segmentation/cascade to the SDU that is received to be handled, and is assembled into unacknowledged mode data protocol Data Unit (UMD PDU), hereinafter to be referred as PDU.

Wherein, the form of UMD PDU is as shown in Table 1:

Sequence Number	E
Sequence Number	E	Length Indicator	E
……		Length Indicator	E
……		Length Indicator	E
Data		Length Indicator	E
Data		PAD

Octl (Optional) (Optional) (Optional)Last Ocetet

Table one

In the form of rlc protocol UMD PDU, use Length Indication (LI, Length Indicator) indicates the position that RLC SDU finishes in this PDU, LI is except some predefined particular values, RLC head end position is to the byte number of RLC SDU in last byte of this PDU among the expression UMD PDU, and LI is 7 or 15.For the UM pattern, if maximum UMD PDU size＜=125 bytes are then used 7 LI, other situations are used 15 LI.Shown in table two, table three, table two is that the implication of 7 each particular values of LI is described to the implication of 7 LI and 15 each particular values of LI respectively, and table three is that the implication of 15 each particular values of LI is described.

Bit	Describe
Bit	Describe	0000000	Previous RLC PDU is just in time filled up by a RLC SDU, does not have the end of this SDU of Length Indication sign in previous RLC PDU
1111100	UMD PDU: first byte of this RLC PDU is first byte of a RLC SDU; AMD PDU: keep (in the present version, the PDU with this value is dropped)	0000000
1111100		1111101	Keep (in the present version, the PDU with this value is dropped)
1111110	The remainder of AMD PDU:PDU has comprised a cascade status protocol data cell (piggybacked STATUS PDU); UMD PDU: keep (in the present version, the PDU with this value is dropped)	1111101
1111110		1111111	The remainder of RLC PDU is a filling bit, and filling bit length can be zero

Table two

Bit	Describe
Bit	Describe	000000000000000	Previous RLC PDU is just in time filled up by a RLC SDU, does not have LI to indicate the end of this SDU in previous RLC PDU
111111111111011	Last segmentation of RLC SDU also remains a byte after filling previous RLC PDU, in previous RLC PDU, do not have the end of LI sign RLC SDU, ignore last byte among the previous PDU	000000000000000
111111111111011		111111111111100	The remainder of AMD PDU:PDU has comprised a cascade status protocol data cell (piggybacked STATUS PDU); UMD PDU: keep (in the present version, the PDU with this value is dropped)
111111111111101	Keep (in the present version, the PDU with this value is dropped)	111111111111100
111111111111101		111111111111110	The remainder of AMD PDU:PDU has comprised a cascade status protocol data cell (piggybacked STATUS PDU); UMD PDU: keep (in the present version, the PDU with this value is dropped)
111111111111111	The remainder of RLC PDU is a filling bit, and filling bit length can be zero	111111111111110

Table three

Because comprising the SDU of criteria information cannot be cascaded among the same PDU with the SDU that comprises non-criteria information, therefore in this step, RLC UM entity needs the information type of each SDU that receives of difference in real time, and carry out segmentation/cascade according to the information type of SDU and handle, that is: carrying out segmentation/cascade for the SDU that comprises criteria information handles, be assembled into the protocol Data Unit (PDU) that comprises criteria information, carry out segmentation/cascade for the SDU that comprises non-criteria information and handle, be assembled into the PDU that comprises non-criteria information.

Steps A 3, RLC UM entity are that the PDU that is assembled into is provided with sequence number, send the PDU that is assembled into to the MAC layer by a MCCH logic channel, and judge among the PDU that is sent whether comprise criteria information, if, then in RLC UM entity, preserve this and comprise the PDU of criteria information, otherwise, do not preserve this PDU.

In the prior art, the PDU and the same sequence number space of the common use of the PDU that comprises non-criteria information that comprise criteria information.With 7 bit spaces is example, and the sequence number that sequence number space comprises is: 0～127.

Steps A 4, MAC layer send PDU with the FACH transmission channel that the MCCH logic channel is mapped to physical layer.At this moment, a repetition period finishes.

Steps A 5 judges whether the current modification cycle finish, if, execution in step A7 then; Otherwise, with the next one repetition period as current repetition period, execution in step A6.

Steps A 6, RLC UM entity are in the current repetition period, receive the SDU that RRC sends, the information type of the difference SDU that receives no longer deals with for the SDU that comprises criteria information, direct PDU that preserved, that comprise criteria information in the MAC layer sends RLC UM entity, and return steps A 4; Carry out segmentation/cascade for the SDU that comprises non-criteria information and handle, be assembled into PDU, for this PDU is provided with sequence number, and send this PDU, and return steps A 4 to the MAC layer.In this repetition period, be to comprise that the sequence number of non-criteria information PDU setting and the sequence number of the PDU of a last repetition period belonged to same sequence number space, but the value difference.

Steps A 7, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to the PDU deletion that above-mentioned RLC UM entity is preserved, and, return steps A 1 the state parameter zero clearing.

Corresponding with transmit leg RLC UM entity, in recipient RLC UM entity, after beginning, carry out following steps when the previous modification cycle:

Step B1, current modification cycle, and in first repetition period, RLC UM entity receives that whenever a PDU attempts the relevant SDU that recombinates out, preserves this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer.At this moment, a repetition period finishes.

Step B2, judge whether the current modification cycle finish, if, execution in step B4 then; Otherwise, with the next one repetition period as current repetition period, execution in step B3.

Step B3, in the current repetition period, judge according to the sequence number of receiving PDU whether the PDU identical with this sequence number preserves, if, then abandon the PDU that receives, return step B2; Otherwise, attempt the relevant SDU that recombinates out with this PDU, preserve this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer, return step B2.

Step B4, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to the PDU deletion that above-mentioned RLC UM entity is preserved, and, return step B1 the state parameter zero clearing.

But, in above-mentioned prior art scheme, there is following problem:

1, use identical sequence number space owing to comprise the SDU of criteria information with the SDU that comprises non-criteria information, therefore the sequence number to RLC UM entity has strict restriction, can not wraparound use.For example for 7 bit sequence number spaces, suppose that there are 60 PDU that comprise criteria information each repetition period, 20 PDU that comprise non-criteria information; Suppose to use the 0th～59 sequence number to represent to comprise the PDU of criteria information in first repetition period, the 60th～79 sequence number represents to comprise the PDU of non-criteria information; Second repetition period, comprise that the PDU content of criteria information is constant, RLC UM entity retransmits the PDU of last repetition period preservation, for the new PDU that comprises non-criteria information, then adopt new sequence number to send, the 0th～79 sequence number before promptly can not using needs to distribute new sequence number.Therefore, comprise that the sequence number that non-criteria information PDU can use has only the 79th～127, if the repetition period in modification cycle is more, then existing sequence number is not enough, need expand the figure place of sequence number space, and sequence number takies the header overhead of PDU, therefore can increase the header overhead of PDU, reduce information transfer efficiency, increase cost.

2, the sequence number for non-criteria information can not use in wraparound, because whether the recipient does not distinguish is to comprise that criteria information also is the PDU of non-criteria information, if the sequence number wraparound of non-criteria information is used, for example, sequence number is 60～79 in first repetition period, and the recipient preserves this sequence number, and second repetition period continues wraparound and use the new PDU of these sequence number 60～79 expressions, then the recipient will abandon this new PDU because having preserved this sequence number, causes the Data Receiving mistake.

3, because transmit leg RLC UM entity needs the information type of each SDU that receives of difference in real time, and carry out segmentation/cascade respectively according to the information type of SDU and handle, so the complex disposal process of RLC UM entity when transmission information, amount of calculation is big, efficient is low, and performance is not high.

4, in addition, because existing technical scheme does not have the dispatching method of clear and definite criteria information and non-criteria information, therefore work as criteria information and non-criteria information and arrive RLC UM entity simultaneously, perhaps when in second repetition period and follow-up repetition period in a modification cycle, when retransmitting criteria information PDU, in case have non-criteria information to arrive, then RLC UM entity may send the PDU that comprises criteria information earlier, the transmission but not criteria information is delayed time.Under opposite extreme situations, an access information cycle, the interior PDU that comprises non-criteria information may just be sent out down in the next access information cycle, the non-criteria information that can cause MBMS thus, it also is access information, received by the UE time-delay, thereby influence the behavior of UE in the counting process, reduce accuracy, the prolongation counting process of counting, reduce the performance of system.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of transmission method of control information, to simplify the process of information transmission processing, improves information transmission efficiency, reduces error rate and cost.

Another object of the present invention is to provide another kind of information transferring method,, improve the overall performance of system to improve reliability of information transmission and flexibility.

To achieve these goals, technical scheme of the present invention specifically is achieved in that

A kind of information transferring method, this method comprises:

A, at the transmit leg of wireless telecommunication system, respectively the need periodicity emphasis that will send is recurred carry information and do not need periodicity emphasis recurrence carry information to handle, be assembled into data cell, utilize separate sequence number space sequence number to be set respectively, and send for the data cell of assembling;

B, the recipient of wireless telecommunication system, respectively to the need periodicity emphasis recurrence carry information that received with do not need periodicity emphasis to recur carry information to receive processing.

As a preferred embodiment of the present invention, in wireless telecommunication system, is provided for handling the logical block that needs periodicity emphasis recurrence carry information respectively, and is used to handle the logical block that does not need periodicity emphasis recurrence carry information, and described steps A specifically comprises:

A1, at the transmit leg of wireless telecommunication system, when informational needs sends, judge the type of information, if the information that needs the periodicity emphasis recurrence to send is then submitted to the logical block that processing needs periodicity emphasis recurrence carry information; If the information that does not need the periodicity emphasis recurrence to send is then submitted to the logical block that processing does not need periodicity emphasis recurrence carry information;

A2, processing need the logical block of periodicity emphasis recurrence carry information and handle not need the logical block of periodicity emphasis recurrence carry information respectively the information of being received separately to be handled, and are assembled into data cell; And utilize different sequence number space sequence number to be set respectively for the data cell that respectively is self-assembled into, export this serialized data cell, the transmit leg of wireless telecommunication system is indicated the information type in this data cell in data cell, send by a physical channel;

Described step B specifically comprises:

The recipient of wireless telecommunication system is according to the information type in the data cell of being received, submitting to described processing respectively needs the logical block of periodicity emphasis recurrence carry information and handle the logic cell processes data cell that does not need periodicity emphasis recurrence carry information.

Described processing needs the logical block of periodicity emphasis recurrence carry information not need the logical block of periodicity emphasis recurrence carry information to export serialized data cell by different logic channels respectively with handling, and the information type in the data cell is indicated by the type and the numbering of logic channel.

In the described steps A 2, further comprise: handling needs the logical block of periodicity emphasis recurrence carry information to preserve the data cell of being assembled.

Further comprise in described steps A 1: in the current modification cycle of communication system, if the described periodicity emphasis recurrence carry information that needs was submitted to, then indication is handled needs the logical block of periodicity emphasis recurrence carry information to resend the data cell of being preserved.

Comprise further among the described step B that handling needs the logical block of periodicity emphasis recurrence carry information to preserve the data cell of being received; Handling does not need the logical block of periodicity emphasis recurrence carry information not preserve the data cell of being received.

Described processing needs the logical block of periodicity emphasis recurrence carry information after receiving data cell, further judge whether the sequence number of this data cell is identical with the sequence number of preservation data cell, if it is identical, then abandon this data cell, otherwise, this data cell is handled, and preserved this data cell.

The information that the preferential transmission of the transmit leg of described wireless telecommunication system does not need the periodicity emphasis recurrence to send.

Described logical block is a Radio Link control RLC entity.

Described logical block is a logic module in the RLC entity.

The described information that needs the periodicity emphasis recurrence to send is the criteria information in the multimedia broadcast/group broadcast service MBMS control information; The described information that does not need the periodicity emphasis recurrence to send is the non-criteria information in the MBMS control information.

The present invention also provides a kind of information transferring method, and this method comprises: judge in the current SDU information to be sent whether comprise the SDU that needs priority treatment, if do not comprise, then successively each SDU information to be sent is handled; If comprise, judge that more current whether the processing do not need the SDU of priority treatment information, if, then interrupt current SDU information processing, earlier the SDU information that needs priority treatment is handled, afterwards, again the SDU information of being interrupted is handled; Otherwise the order of priority treatment is handled each SDU information to be sent successively as required.

Wherein, described interruption is specially current SDU information processing: interrupt segmentation cascade and transmission to current SDU information.Perhaps, described interruption is specially current SDU information processing: only interrupt the transmission to current SDU information, all PDU that described current SDU information is packaged into have continuous sequence number.

In the such scheme, the segmentation that described SDU information is SDU or be SDU end position sign or the combination of the two.Described to need the SDU of priority treatment be the identical SDU of one or more types, or be the different SDU of one or more types.

In the such scheme, described SDU information is handled comprises: the SDU information segmenting is cascaded into one or more PDU, and needs the SDU information of priority treatment and do not need the SDU information of priority treatment can not be cascaded among the same PDU; Wherein, described PDU is the UMD PDU in the UM pattern under the WCDMA/TD-SCDMA rlc protocol.

In the such scheme, whether the priority that dissimilar SDU information is corresponding different then needs priority treatment to determine according to priority; Perhaps, whether need priority treatment to determine, or determine according to the transmission demand according to the characteristic of dissimilar SDU information.

In the such scheme, the described SDU that needs priority treatment is the non-criteria information in the MBMS control information; The SDU of described Interrupt Process is the criteria information in the MBMS control information.So, this method specifically comprises:

A1, judgement will send the type of SDU information, if be non-criteria information, then this information are carried out segmentation cascade and transmission, finish current handling process; If criteria information, then execution in step b1;

B1, segmentation cascade and send described criteria information, simultaneously, whether monitoring in real time has new non-criteria information to send, if having, execution in step c1 then;

C1, interrupt segmentation cascade and transmission, earlier described non-criteria information is carried out segmentation cascade and transmission, and then continue the criteria information that has been untreated is carried out segmentation cascade and transmission described criteria information.

Perhaps, this method specifically comprises:

A2, judgement will send the type of SDU information, if be non-criteria information, then this information are carried out segmentation cascade and transmission, finish current handling process; If criteria information, then execution in step b2;

B2, segmentation cascade and send described criteria information, simultaneously, whether monitoring in real time has new non-criteria information to send, if having, execution in step c2 then;

C2, finish all segmentation cascades of described criteria information, and all segmentations of the described criteria information that does not send after the non-criteria information are received in storage, then described non-criteria information is carried out segmentation cascade and transmission, the last segmentation that sends the described criteria information of storage again.

In the such scheme, each SDU is all encapsulated each PDU by the fixed size that sets in advance.

Because the present invention uses two RLC UM entities respectively, perhaps adopting two modules respectively independently segmentation/cascade to be carried out in the control information of different information types in a RLC UM entity handles, avoided in segmentation/cascade processing procedure, need the information type of each SDU that receives of difference in real time, simplified the processing procedure of segmentation/cascade greatly, reduce the amount of calculation of RLC UM entity, improved the operating efficiency and the overall performance of RLC UM entity.

Because in the invention, comprise the PDU that needs periodicity emphasis recurrence carry information and comprise that not needing periodicity emphasis to recur the PDU that send uses two different sequence number space respectively, therefore reduced the serial number quantitative limitation, and indirect reduction the figure place of sequence number space, further reduce the header overhead of PDU, improve efficiency of transmission.

Because the control information that the present invention adopts two logic channels to transmit respectively needs periodicity emphasis to recur the control information of sending and do not need the periodicity emphasis recurrence to send, and in the PDU that sends, add the sign of sign control information type, the recipient handles respectively according to the control information that this sign recurs the control information of sending and do not need the periodicity emphasis recurrence to send the needs periodicity emphasis, therefore can be to comprising that the sequence number that does not need periodicity emphasis recurrence carry information PDU carries out wraparound and uses, further reduce the header overhead of PDU, improve efficiency of transmission.

Another kind of information transferring method proposed by the invention, adopt special scheduling mechanism, handle the SDU information that needs priority treatment earlier, such as: the access information in priority treatment and the transmission MBMS control information, it is non-criteria information, thereby avoid the delay of access information, improve accuracy, the shortening counting process of counting; And, improved reliability of information transmission and flexibility, improved the overall performance of system.

Description of drawings

Fig. 1 is the system assumption diagram of MBMS;

Fig. 2 is a MBMS multicast pattern business process map;

Fig. 3 is a MBMS broadcast mode business process map;

Fig. 4 is the protocol stack structure figure of MCCH;

Fig. 5 is the mapping relations figure of the FACH passage of the logical channel of MAC layer and physical layer;

Fig. 6 is a MCCH transmission of Information scheduling graph;

Fig. 7 is the transmission means figure of MBMS control information;

Fig. 8 A is the flow chart of the described control information transmission method of first embodiment of the invention at transmit leg;

Fig. 8 B is the flow chart of the described control information transmission method of first embodiment of the invention the recipient;

Fig. 9 A is the flow chart of the described control information transmission method of second embodiment of the invention at transmit leg;

Fig. 9 B is the flow chart of the described control information transmission method of second embodiment of the invention the recipient;

Figure 10 is the process chart of information transferring method proposed by the invention;

Figure 11 is a kind of transmission relation schematic diagram of different SDU behind the employing information transferring method of the present invention;

Figure 12 is the another kind of transmission relation schematic diagram of different SDU behind the employing information transferring method of the present invention.

Embodiment

Further specify implementation method of the present invention below in conjunction with the drawings and specific embodiments.

Core concept of the present invention is: in the transmission course of business control information, for the information that wherein needs periodicity emphasis to recur the information of sending and do not need the periodicity emphasis recurrence to send, independently carry out segmentation/cascade and numbering etc. respectively mutually and handle the transmission of operation back, utilize respectively wherein independently that sequence number space is numbered, and utilize respectively in the different logic channels and transmit; The information that respectively the need periodicity emphasis is recurred the information of sending and do not need the periodicity emphasis recurrence to send the recipient receives the reorganization processing.

Be that the present invention will be described for example with criteria information in the MBMS control information and non-criteria information herein.The information of criteria information wherein for needing the periodicity emphasis recurrence to send, the information of non-criteria information for not needing periodically to send.

Based on above-mentioned core concept, the first embodiment of the present invention is set up two link layer logic entity RLC in the logic entity RRC that produces professional control messages, be used for handling criteria information and non-criteria information respectively.And transmit this information by two logic channels, by the MAC layer two logic channels are multiplexed into a FACH again and upload transmission information.Among this first embodiment, the transmission method of MBMS control information mainly comprises the process of transmitting of transmit leg RLC UM entity and the receiving course of recipient RLC UM entity.

Referring to Fig. 8 A, be the flowchart of the described control information transmission method of this first embodiment at transmit leg, wherein, transmit leg RLC UM entity is carried out following steps after beginning when the previous modification cycle:

Step 8A1, current modification cycle begin, in first repetition period, the high level of MCCH, it is the type that RRC distinguishes the control information that needs transmission, to comprise that the SDU of criteria information sends to the RLC UM entity of described processing criteria information, will comprise that the SDU of non-criteria information sends to the RLC UM entity of the non-criteria information of described processing; After RLC UM entity receives SDU, execution in step 8A2.

Step 8A2, the RLC UM entity handling the RLC UM entity of criteria information and handle non-criteria information respectively, independently of each other the SDU that is received is separately carried out segmentation/cascade and handles, be assembled into PDU.

Because comprising the SDU of criteria information cannot be cascaded among the same PDU with the SDU that comprises non-criteria information, therefore the present invention is with respect to prior art, with two RLC UM entities independently segmentation/cascade being carried out in the control information of different information types respectively handles, avoided in segmentation/cascade processing procedure, need the information type of each SDU that receives of difference in real time, simplified the processing procedure of segmentation/cascade greatly, reduce the amount of calculation of RLC UM entity, improved the operating efficiency and the overall performance of RLC UM entity.

The RLC UM entity of step 8A3, described processing criteria information utilizes different sequence number space respectively, for the PDU that respectively is self-assembled into sequence number is set independently of each other with the RLCUM entity of handling non-criteria information, and send the PDU that is assembled into to the MAC layer by different MCCH logic channel respectively, and, handle the RLC UM entity of criteria information and also will preserve the PDU that this sends.

In the present invention, comprise that the PDU of criteria information uses two different sequence number space respectively with the PDU that comprises non-criteria information.With 7 bit spaces is example, the sequence number that two each and every one sequence number space comprise can for: 0～127.But because in the process of transmission information, the processing procedure of two RLC UM entities is separate, therefore can be owing to sequence number clashes.With respect to prior art, alleviate restriction to sequence number.For example: for 7 bit sequence number spaces, the sequence number quantity that comprises criteria information PDU is restricted to 128, the sequence number quantity that comprises non-criteria information PDU is restricted to 128, and in the prior art for 7 for for the sequence number space, comprise criteria information PDU and non-criteria information PDU sequence number quantity sum be restricted to 128, therefore, the present invention has reduced the serial number quantitative limitation, and indirect reduction the figure place of sequence number space, thereby reduce the header overhead of PDU, improve efficiency of transmission.

Step 8A4, MAC layer are multiplexed into described two MCCH logic channels on the FACH channel on the physical layer, promptly behind the PDU that receives from the RLC entity, logical channel according to this PDU of transmission is judged the information type that this PDU comprises, and in this PDU, indicate the information type that it comprises, by described FACH channel transmission PDU.At this moment, a repetition period finishes.

In this step, in order to increase out of order transfer function, the present invention also needs the MAC layer can increase the multiplexing function of two MCCH logic channels.The MAC agreement of MAC layer uses the C/T territory to distinguish the Different Logic channel of identical MCCH type among the present invention, also promptly distinguishes the PDU that comprises different information types.For example, can distinguish two MCCH logic channels with the C/T territory of 1 bit, the value in C/T territory can for: 0 or 1, when value was 0: expression was used to transmit non-criteria information, when value was 1: expression was used to transmit criteria information.

Can also there be the mode of other realizations in C/T of the present invention territory, and for example, the angle from expansion can represent the C/T territory with 2 bits, but principle is similar.

Accordingly, after the MAC layer is multiplexed into described two MCCH logic channels on the FACH channel on the physical layer, be transferred to the recipient after described PDU being expanded to the form of MAC PDU, the form of MAC PDU as shown in Table 4:

Comprise content	Describe
Comprise content	Describe	TCTF	The logic channel of sign MCCH type
C/T	Be used to distinguish the logical channel number of criteria information/non-criteria information	TCTF	The logic channel of sign MCCH type
C/T		MAC SDU	Concrete SDU data content

Table four

In addition, the multiplexing function of two MCCH logic channels of MAC layer realization also can not used the C/T territory among the present invention, but adopt two TCTF values to distinguish the Different Logic channel of identical MCCH type, that is: in coding based on the TCTF of prior art, the logic channel that adopts two values to identify respectively to be used to transmit the MCCH logic channel of criteria information and to be used to transmit non-criteria information.The coding of TCTF is as shown in Table 5 on the FACH channel in the prior art:

The encoded radio of TCTF	Describe
The encoded radio of TCTF	Describe	00	Sign BCCH
01000000	Sign CCCH	00	Sign BCCH
01000000	Sign CCCH	01000001-01111111	Reserve (using the PDU of this coding to be abandoned) by this release protocol
10000000	Sign CTCH	01000001-01111111
10000000	Sign CTCH	10000001- 10111111	Reserve (using the PDU of this coding to be abandoned) by this release protocol
11	DCCH or DTCH on the sign FACH	10000001- 10111111

Table five

The coding of TCTF is as shown in Table 6 on the FACH channel among the present invention:

The encoded radio of TCTF	Describe
The encoded radio of TCTF	Describe	00	Sign BCCH
01000000	Sign CCCH	00	Sign BCCH
01000000	Sign CCCH	01000001	Sign transmits the MCCH logical channel number of criteria information
01000010	Sign transmits the MCCH logical channel number of non-criteria information	01000001
01000010		01000011-01111111	Reserve (using the PDU of this coding to be abandoned) by this release protocol
10000000	Sign CTCH	01000011-01111111
10000000	Sign CTCH	10000001- 10111111	Reserve (using the PDU of this coding to be abandoned) by this release protocol
11	DCCH or DTCH on the sign FACH	10000001- 10111111

Table six

In the above-mentioned table six, transmit the MCCH logic channel of criteria information with 01000001 sign, transmit the MCCH logic channel of non-criteria information with 01000010 sign, therefore only both can distinguish the Different Logic channel of identical MCCH type with the TCTF value, certainly, this is a kind of execution mode, and similarly, also available other two different TCTF coding values are distinguished MCCH logic channel that transmits criteria information and the logic channel that transmits the MCCH of non-criteria information.

Distinguish the method for the Different Logic channel of identical MCCH type for two TCTF values of above-mentioned employing, the form of its corresponding M AC PDU is as shown in table 4:

Comprise content	Describe
Comprise content	Describe	TCTF	The logic channel of sign MCCH type
MAC SDU	Concrete SDU data content	TCTF	The logic channel of sign MCCH type

Table 4

For two MCCH logic channels of MCCH type, the MCCH logic channel that requires to be used for to transmit non-criteria information has higher priority than the MCCH logic channel that is used for transmitting criteria information.The MAC layer is when dispatching, and priority scheduling is used for transmitting the data of the MCCH logic channel of non-criteria information.

Step 8A5 judges whether the current modification cycle finish, if, execution in step 8A7 then; Otherwise, with the next one repetition period as current repetition period, execution in step 8A6.

Step 8A6, in the current repetition period, the RLC UM entity of RRC request processing criteria information retransmits the PDU that comprises criteria information of its preservation, after the RLC UM entity of handling criteria information is received request, directly send the PDU that self preserves, return step 8A4 to the MAC layer; Simultaneously, RRC will comprise that the SDU of non-criteria information sends to the RLC UM entity of the non-criteria information of described processing; This RLC UM entity of handling non-criteria information carries out segmentation/cascade to the SDU that receives to be handled, and is assembled into the PDU that comprises non-criteria information, for this PDU is provided with sequence number, sends this PDU then to the MAC layer, returns step 8A4.

In this repetition period be comprise sequence number that non-criteria information PDU is provided with on the sequence number of PDU of a repetition period belong to same sequence number space, but the value difference.

Step 8A7, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to the PDU deletion that above-mentioned RLC UM entity is preserved, and, return step 8A1 the state parameter zero clearing.

Referring to Fig. 8 B, corresponding with transmit leg RLC UM entity, in the recipient RLC UM entity, after beginning, carry out following steps when the previous modification cycle:

Step 8B1, current modification cycle begin, and in first repetition period, after the MAC layer is whenever received a PDU, judge the type of this PDU according to the C/T territory of this PDU, that is: be to comprise that criteria information also is non-criteria information, and will comprise that by a MCCH logic channel PDU of criteria information sends to the RLC UM entity of handling criteria information, will comprise that by another MCCH logic channel the PDU of non-criteria information sends to the RLC UM entity of handling non-criteria information.

Step 8B2, the RLC UM entity of handling the RLC UM entity of criteria information and handling non-criteria information receive and handle the PDU that receives respectively, wherein:

Handle the RLC UM entity of criteria information and receive that whenever a PDU attempts the relevant SDU that recombinates out, preserves this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer; Handle the RLC UM entity of non-criteria information and receive that whenever a PDU only attempts the relevant SDU that recombinates out, and the SDU that recombinates out is submitted to rrc layer.

Step 8B3, at this moment, a repetition period finishes, and judges whether the current modification cycle finish, if, execution in step 8B5 then; Otherwise, with the next one repetition period as the current repetition period.

Step 8B4, in the current repetition period, the RLC UM entity of handling the RLC UM entity of criteria information and handling non-criteria information receives and handles the PDU that receives respectively, wherein:

Handle the RLC UM entity of criteria information and whenever receive a PDU, then judge according to the sequence number of receiving PDU whether the PDU identical with this sequence number preserves, if, then abandon the PDU that receives, return step 8B3, otherwise, attempt the relevant SDU that recombinates out with this PDU that receives, preserve this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer, return step 8B3;

Handle the RLC UM entity of non-criteria information and whenever receive a PDU, then directly attempt the relevant SDU that recombinates out, the SDU that recombinates out is submitted to rrc layer, return step 8B3.

Step 8B5, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to the PDU deletion that above-mentioned RLC UM entity is preserved, and, return step 8B1 the state parameter zero clearing.

First embodiment of the invention described above adopts two kinds of RLC UM entities respectively criteria information and non-criteria information to be carried out processing such as segmentation/cascade, numbering and reorganization, and transmits respectively with two kinds of logic channels.

The present invention also can adopt a kind of RLC UM entity respectively criteria information and non-criteria information to be carried out processing such as segmentation/cascade, numbering and reorganization, and transmits respectively with two kinds of logic channels, specifically referring to following second

Embodiment.

Referring to Fig. 9 A, be the flowchart of the described control information transmission method of this second embodiment at transmit leg, this second embodiment is provided with two processing modules in RLC UM entity, handle criteria information and non-criteria information respectively.Wherein, transmit leg is carried out following steps after beginning when the previous modification cycle:

Step 9A1, current modification cycle begin, in first repetition period, the high level of MCCH, be that the control information that RRC will need to send sends to RLC UM entity by SDU, wherein, the SDU that will comprise criteria information sends to the module of handling criteria information in the RLC UM entity, will comprise that the SDU of non-criteria information sends to the module of handling non-criteria information in the RLC UM entity.

Two different modules in step 9A2, the RLC UM entity are carried out segmentation/cascade processing respectively individually to SDU that comprises criteria information and the SDU that comprises non-criteria information, that is: the module of handling criteria information is carried out segmentation/cascade processing to the SDU that comprises criteria information, is assembled into the protocol Data Unit (PDU) that comprises criteria information; Handle the module of non-criteria information the SDU that comprises non-criteria information is carried out segmentation/cascade processing, be assembled into the PDU that comprises non-criteria information.

The module of step 9A3, described processing criteria information is utilized different sequence number space respectively, for the PDU that respectively is self-assembled into sequence number is set independently of each other with the module of handling non-criteria information, and send the PDU that is assembled into to the MAC layer by different MCCH logic channel respectively, and, handle the module of criteria information and also will preserve the PDU that this sends.

Step 9A4, MAC layer are multiplexed into described two MCCH logic channels on the FACH channel on the physical layer, send PDU that comprises criteria information and the PDU that comprises non-criteria information by this FACH channel.At this moment, a repetition period finishes.

Identical with above-mentioned first embodiment, in this step, in order to support out of order transfer function, after the MAC layer is multiplexed into described two MCCH logic channels on the FACH channel on the physical layer, be transferred to the recipient after described PDU being expanded to the form of MAC PDU, the form of its MAC PDU is shown in above-mentioned table four.

In addition, for two MCCH logic channels of MCCH type, the MCCH logic channel that requires to be used for to transmit non-criteria information has higher priority than the MCCH logic channel that is used for transmitting criteria information.The MAC layer is when dispatching, and priority scheduling is used for transmitting the data of the MCCH logic channel of non-criteria information.

Step 9A5 judges whether the current modification cycle finish, if, execution in step 9A7 then; Otherwise, with the next one repetition period as current repetition period, execution in step 9A6.

Step 9A6, in the current repetition period, the module of handling criteria information in the RRC request RLC UM entity retransmits the PDU that comprises criteria information of its preservation, after the module of handling criteria information is received request, directly send the PDU that self preserves, return step 9A4 to the MAC layer; Simultaneously, RRC will comprise that the SDU of non-criteria information sends to the module of the non-criteria information of described processing; This module of handling non-criteria information is carried out segmentation/cascade processing to the SDU that receives, is assembled into the PDU that comprises non-criteria information, for this PDU is provided with sequence number, sends this PDU then to the MAC layer, returns step 9A4.

Step 9A7, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to the PDU deletion that above-mentioned RLC UM entity is preserved, and, return step 9A1 the state parameter zero clearing.

Referring to Fig. 9 B, corresponding with transmit leg, the recipient carries out following steps after beginning when the previous modification cycle:

Step 9B1, current modification cycle begin, and in first repetition period, after the MAC layer is whenever received a PDU, judge the type of this PDU according to the C/T territory of this PDU, that is: be to comprise that criteria information also is non-criteria information, and will comprise that by a MCCH logic channel PDU of criteria information sends in the RLCUM entity module of handling criteria information, will comprise that by another MCCH logic channel the PDU of non-criteria information sends to the module of handling non-criteria information in the RLC UM entity.

Step 9B2, the module of handling the module of criteria information and handling non-criteria information receive and handle the PDU that receives respectively, wherein:

Handle the module of criteria information and receive that whenever a PDU attempts the relevant SDU that recombinates out, preserves this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer; Handle the module of non-criteria information and receive that whenever a PDU only attempts the relevant SDU that recombinates out, and the SDU that recombinates out is submitted to rrc layer.

Step 9B3, at this moment, a repetition period finishes, and judges whether the current modification cycle finish, if, execution in step 9B5 then; Otherwise, with the next one repetition period as the current repetition period.

Step 9B4, in the current repetition period, the module of handling the module of criteria information and handling non-criteria information receives and handles the PDU that receives respectively, wherein:

Handle the module of criteria information and whenever receive a PDU, then judge according to the sequence number of receiving PDU whether the PDU identical with this sequence number preserves, if, then abandon the PDU that receives, return step 3, otherwise, attempt the relevant SDU that recombinates out with this PDU that receives, preserve this PDU according to sequence number, and the SDU that recombinates out is submitted to rrc layer, return step 9B3;

Handle the module of non-criteria information and whenever receive a PDU, then directly attempt the relevant SDU that recombinates out, the SDU that recombinates out is submitted to rrc layer, return step 9B3.

Step 9B5, the next one is revised the cycle as the current modification cycle, rebuild RLC UM entity, be about to handle in the above-mentioned RLC UM entity PDU deletion that the criteria information module is preserved, and, return step 9B1 the state parameter zero clearing of RLC UM entity.

Owing to do not have in the prior art scheme at PDU that comprises criteria information and the dispatching method that comprises the PDU of non-criteria information, the invention also discloses a kind of information transferring method, in the process that SDU information is handled, if when the SDU information of handling certain type, the SDU informational needs priority treatment of receiving the SDU information of another kind of type and newly receiving, then interrupt current SDU information processing, earlier the SDU information of newly receiving is handled, after the SDU information processing of newly receiving finishes, continue the SDU information of handling interrupt again.Wherein, described SDU information comprises: all segmentations of SDU and SDU end position sign.It is described that information processing comprises segmentation cascade and transmission to SDU.

Here, whether need priority treatment to determine according to priority, in this case, the dissimilar corresponding different priority of SDU information meeting; Or definite according to the characteristic of dissimilar SDU information, such as: non-criteria information need have precedence over criteria information and send; Or definite according to transmission demand at that time, such as: the SDU information that will have precedence over type A according to the SDU information of service needed Type C.Below all to determine according to the SDU information characteristic whether the needs priority treatment is an example, further describes implementation of the present invention.

Supposing has two types SDU:SDU1 and SDU2, and according to the characteristic of two class SDU information, SDU2 need have precedence over SDU1 and handle, and so, the process of the segmentation cascade of SDU information and transmission is divided into two kinds of situations among the present invention:

First kind is, the current sender entity is being SDU1 at the SDU of segmentation cascade and transmission just, receive that newly SDU is SDU2, in this case, two kinds of processing modes can be arranged: 1. interrupt segmentation cascade and transmission again to SDU1, earlier SDU2 is carried out segmentation cascade and transmission, afterwards, continue segmentation cascade and the transmission of SDU1 again; 2. continue to finish segmentation cascade, but do not send, then SDU2 is carried out segmentation cascade and transmission receiving the PDU storage that encapsulates out behind the SDU2 to SDU1; After all information of SDU2 send, send the remaining segment of SDU1 again, i.e. all PDU of the corresponding SDU1 that is stored.In the time of need sending a non-criteria information SDU such as: UM sending entity, if criteria information SDU is arranged in the current buffering area, and the part of this criteria information SDU is handled by segmentation/cascade, be encapsulated among the PDU and sent, also remaining a part does not have processed, then the UM sending entity carries out the remaining data of this criteria information SDU segmentation/cascade processing earlier, is packaged into PDU, and stores the PDU of these encapsulation; Then, the UM sending entity will need the non-criteria information SDU that sends to carry out segmentation cascade processing, be packaged into PDU and send; After sending the PDU that non-criteria information SDU is packaged into, send the PDU that the criteria information SDU of storage is packaged into again.

Second kind is, the current sender entity is being SDU2 at the SDU of segmentation cascade and transmission just, receives that newly SDU is SDU1, in this case, only needs successively SDU2 and the SDU1 that successively receives to be carried out the segmentation cascade in order, is packaged into the PDU transmission and gets final product.

Among the present invention, dissimilar SDU information level can not be associated among the same PDU, such as: non-criteria information SDU and criteria information SDU can not be cascaded among the same PDU and send.Here, described PDU is meant the UMD PDU in the UM pattern under the WCDMA/TD-SCDMA rlc protocol.Described SDU information is meant the segmentation of SDU or end position sign or the combination of the two of SDU, that is to say, the segmentation of a non-criteria information SDU and the segmentation stage of a criteria information SDU can not be linked among the same PDU, equally, end position sign that can not a non-criteria information SDU is linked among the same PDU with the segmentation stage of a criteria information SDU, and vice versa.

Suppose that a SDU and the 2nd SDU represent dissimilar SDU respectively, and the 2nd SDU will have precedence over a SDU and handle, so, the basic thought of information transferring method proposed by the invention is exactly:

The transmit leg entity judges whether comprise a SDU and the 2nd SDU among the current SDU to be processed simultaneously, if comprise a SDU and the 2nd SDU simultaneously, then the transmit leg entity carries out the segmentation cascade to the 2nd SDU earlier, be packaged into PDU and numbering transmission, and then a SDU carried out segmentation cascade and transmission, and, in segmentation cascade and process of transmitting, if receive the 2nd SDU, then interrupt processing to a SDU, earlier the 2nd SDU is carried out segmentation cascade and transmission, afterwards, continue processing again a SDU; If only comprise the 2nd SDU, then the transmit leg entity directly carries out the segmentation cascade to the 2nd SDU, is packaged into PDU and numbering transmission; If only comprise a SDU, then a SDU is carried out segmentation cascade and transmission, and, in segmentation cascade and process of transmitting,, then interrupt processing to a SDU if receive the 2nd SDU, earlier the 2nd SDU is carried out segmentation cascade and transmission, afterwards, continue processing again a SDU.

In fact, in a SDU segmentation cascade and process of transmitting, might repeatedly receive the 2nd SDU, repeatedly interrupt processing, insert processing the 2nd SDU to a SDU; Also might only insert once, and once comprise a plurality of the 2nd SDU, in a word, which kind of situation no matter, treatment principle is all consistent, interrupts the processing to a SDU, priority treatment the 2nd SDU, handle the 2nd SDU after, continue the processing of a SDU again.

In addition, unfixing corresponding certain type of SDU here and the 2nd SDU that is to say that do not limit the only SDU information of corresponding types A of a SDU, the 2nd SDU is the SDU information of corresponding types B only, and a SDU and the 2nd SDU are comparatively speaking.For concreteness, the SDU information of A, B, three types of C is arranged, the order of priority treatment is: the C type priority has precedence over the category-A type in category-B type and category-B type.So, in the process that category-A type SDU information is handled, if receive category-B type SDU information, then interrupt information processing, earlier category-B type SDU information is handled, at this moment category-A type SDU, the one SDU refers to category-A type SDU information, and the 2nd SDU refers to category-B type SDU information; If in category-B type SDU information processing process, receive C type SDU information again, then interrupt information processing to category-B type SDU, earlier C type SDU information is handled, at this moment, a SDU refers to category-B type SDU information, the 2nd SDU refers to C type SDU information.Generally speaking, as long as follow the principle of handling the SDU information that needs priority treatment earlier.Can in the processing procedure of a SDU, insert the SDU of one or many, one or more same types, also can in the processing procedure of a SDU, insert one or many, one or more dissimilar SDU.

With UM sending entity processing criteria information SDU and non-criteria information SDU is example, and as shown in figure 10, information transferring method proposed by the invention may further comprise the steps:

Step 101, rrc layer send SDU to RLC UM entity, and RLC UM entity judges whether to receive simultaneously at least two SDU, if then execution in step 102; Otherwise, execution in step 105.

Step 102, judge whether non-criteria information SDU is arranged among these SDU, if non-criteria information SDU is arranged, then execution in step 103, otherwise, execution in step 104.

Step 103, priority scheduling are handled this non-criteria information SDU, specifically are exactly: non-criteria information SDU is carried out segmentation/cascade, be packaged into PDU, operation such as be numbered, and the PDU that is packaged into of transmission.

Criteria information SDU is handled in step 104, scheduling, and exactly concrete: SDU carries out segmentation/cascade to this criteria information, is packaged into PDU, is numbered, and sends the PDU that is packaged into; In this process, whether the real-time monitoring of RLC UM entity receives new non-criteria information SDU, if have, then interrupt processing to current criteria information SDU, the new non-criteria information SDU that is received is handled in scheduling immediately, and send the PDU that is packaged into by this non-criteria information SDU, and continue the criteria information SDU of handling interrupt and other criteria information SDU afterwards again, finish current handling process.

Here, described Interrupt Process can be to interrupt segmentation cascade and transmission, also can be only to interrupt sending.

Step 105, judge whether the SDU receive is criteria information SDU, if be non-criteria information SDU, then this non-criteria information SDU is handled, specifically be exactly: carry out segmentation/cascade, be packaged into PDU, operation such as be numbered, and the PDU that is packaged into of transmission; If be criteria information SDU, then this criteria information SDU is dispatched to handle and send, and in this process, whether the real-time monitoring of RLC UM entity receives new non-criteria information SDU, if have, then interrupt processing to current criteria information SDU, the new non-criteria information SDU that is received is handled in scheduling immediately, and send the PDU that is packaged into by this non-criteria information SDU, continue the criteria information SDU of handling interrupt and other criteria information SDU afterwards again.

With dissimilar SDU information is that non-criteria information SDU and criteria information SDU are example, illustrates the specific implementation of information transferring method of the present invention.Here, non-criteria information SDU will have precedence over criteria information SDU processing.

As shown in figure 11, the UM sending entity is current to be criteria information SDU at the SDU of segmentation cascade and transmission just, and the PDU that this criteria information SDU is packaged into is with a filling, before receiving non-criteria information SDU, this criteria information SDU has encapsulated out seven PDU, and sequence number is respectively 1 to 7; After receiving non-criteria information SDU, the UM sending entity just interrupts segmentation cascade and the transmission to criteria information SDU, and begins non-criteria information SDU is carried out the segmentation cascade, is packaged into sequence number and is 8 PDU, and then, transmitting Sequence Number is 8 PDU; After transmission finished, the UM sending entity continued the remainder of criteria information SDU is carried out segmentation cascade and transmission, encapsulated out sequence number and be 9 to 14 PDU, and order to transmit Sequence Number be 9 to 14 PDU.

As shown in figure 12, the UM sending entity is current to be criteria information SDU at the SDU of segmentation cascade and transmission just, and the PDU that this criteria information SDU is packaged into is with a filling, before receiving non-criteria information SDU, this criteria information SDU has encapsulated out seven PDU, and sequence number is respectively 1 to 7; After receiving non-criteria information SDU, the UM sending entity continues to finish the segmentation cascade to this criteria information SDU remainder, encapsulate out sequence number and be 8 to 13 PDU, but be that 8 to 13 PDU does not send, but sequence number is 8 to 13 PDU storage for sequence number; Then, non-criteria information SDU is carried out the segmentation cascade, be packaged into sequence number and be 14 PDU, transmitting Sequence Number immediately after having encapsulated is 14 PDU; After transmission finished, the UM sending entity order sequence number that sends self storage again was 8 to 13 PDU.

In order to guarantee sending entity after receiving the SDU that high level is sent, can carry out segmentation cascade and transmission at once, can set in advance the fixed value of packaged PDU.So, the UM sending entity just carries out the segmentation cascade according to fixed value to the SDU that is received and handles after receiving each SDU, each SDU is packaged into the PDU of one or more fixed sizes.In this case, when having PDU to send, can send according to desired number scheduling PDU, when scheduling, as long as in the buffering area PDU that needs the SDU of priority treatment information such as non-criteria information SDU is arranged, then send the PDU of the SDU information correspondence that needs priority treatment earlier.

Information transferring method proposed by the invention is not only applicable to the MCCH control information, there is the situation of different sending orders and the different SDU information of transmission types in all, all comprise situation of different priorities SDU information or the like, can use the method for the invention to finish message transmission.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.

Claims

1, a kind of information transferring method is characterized in that, this method comprises:

2, information transferring method as claimed in claim 1, it is characterized in that, in wireless telecommunication system, is provided for handling the logical block that needs periodicity emphasis recurrence carry information respectively, and is used to handle the logical block that does not need periodicity emphasis recurrence carry information, and described steps A specifically comprises:

Described step B specifically comprises:

3, information transferring method as claimed in claim 2, it is characterized in that, described processing needs the logical block of periodicity emphasis recurrence carry information not need the logical block of periodicity emphasis recurrence carry information to export serialized data cell by different logic channels respectively with handling, and the information type in the data cell is indicated by the type and the numbering of logic channel.

4, information transferring method as claimed in claim 2 is characterized in that, in the described steps A 2, further comprises: handling needs the logical block of periodicity emphasis recurrence carry information to preserve the data cell of being assembled.

5, information transferring method as claimed in claim 3, it is characterized in that, in described steps A 1, further comprise: in the current modification cycle of communication system, if the described periodicity emphasis recurrence carry information that needs was submitted to, then indication is handled needs the logical block of periodicity emphasis recurrence carry information to resend the data cell of being preserved.

6, information transferring method as claimed in claim 2 is characterized in that, further comprises among the described step B, and handling needs the logical block of periodicity emphasis recurrence carry information to preserve the data cell of being received; Handling does not need the logical block of periodicity emphasis recurrence carry information not preserve the data cell of being received.

7, information transferring method as claimed in claim 6, it is characterized in that, described processing needs the logical block of periodicity emphasis recurrence carry information after receiving data cell, further judge whether the sequence number of this data cell is identical with the sequence number of preservation data cell, if identical, then abandon this data cell, otherwise, this data cell is handled, and preserved this data cell.

8, information transferring method as claimed in claim 1 is characterized in that, the information that the preferential transmission of the transmit leg of described wireless telecommunication system does not need the periodicity emphasis recurrence to send.

As each described information transferring method of claim 1 to 8, it is characterized in that 9, described logical block is a Radio Link control RLC entity.

As each described information transferring method of claim 1 to 8, it is characterized in that 10, described logical block is a logic module in the RLC entity.

As each described information transferring method of claim 1 to 8, it is characterized in that 11, the described information that needs the periodicity emphasis recurrence to send is the criteria information in the multimedia broadcast/group broadcast service MBMS control information; The described information that does not need the periodicity emphasis recurrence to send is the non-criteria information in the MBMS control information.

12, a kind of information transferring method is characterized in that, this method comprises:

Judge in the current SDU information to be sent whether comprise the SDU that needs priority treatment,, then successively each SDU information to be sent is handled if do not comprise; If comprise, judge that more current whether the processing do not need the SDU of priority treatment information, if, then interrupt current SDU information processing, earlier the SDU information that needs priority treatment is handled, afterwards, again the SDU information of being interrupted is handled; Otherwise the order of priority treatment is handled each SDU information to be sent successively as required.

13, information transferring method as claimed in claim 12 is characterized in that, described interruption is specially current SDU information processing: interrupt segmentation cascade and transmission to current SDU information.

14, information transferring method as claimed in claim 12 is characterized in that, described interruption is specially current SDU information processing: only interrupt the transmission to current SDU information, all PDU that described current SDU information is packaged into have continuous sequence number.

15, as claim 12,13 or 14 described information transferring methods, it is characterized in that the segmentation that described SDU information is SDU or be SDU end position sign or the combination of the two.

As claim 12,13 or 14 described information transferring methods, it is characterized in that 16, whether the priority that dissimilar SDU information is corresponding different then needs priority treatment to determine according to priority.

17, as claim 12,13 or 14 described information transferring methods, it is characterized in that whether need priority treatment to determine according to the characteristic of dissimilar SDU information; Or it is definite according to the transmission demand.

As claim 12,13 or 14 described information transferring methods, it is characterized in that 18, described to need the SDU of priority treatment be the identical SDU of one or more types, or be the different SDU of one or more types.

19, as claim 12,13 or 14 described information transferring methods, it is characterized in that, described SDU information is handled comprises: the SDU information segmenting is cascaded into one or more PDU, and needs the SDU information of priority treatment and do not need the SDU information of priority treatment can not be cascaded among the same PDU; Wherein, described PDU is the UMD PDU in the UM pattern under the WCDMA/TD-SCDMA rlc protocol.

As claim 12,13 or 14 described information transferring methods, it is characterized in that 20, the described SDU that needs priority treatment is the non-criteria information in the MBMS control information; The SDU of described Interrupt Process is the criteria information in the MBMS control information.

21, information transferring method as claimed in claim 20 is characterized in that, this method specifically comprises:

22, information transferring method as claimed in claim 20 is characterized in that, this method specifically comprises:

23, as claim 12,13 or 14 described information transferring methods, it is characterized in that, each SDU is all encapsulated each PDU by the fixed size that sets in advance.