CN101374331A - Method, system and equipment for configuring wireless link control layer sequence number - Google Patents
Method, system and equipment for configuring wireless link control layer sequence number Download PDFInfo
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- CN101374331A CN101374331A CNA2007101420560A CN200710142056A CN101374331A CN 101374331 A CN101374331 A CN 101374331A CN A2007101420560 A CNA2007101420560 A CN A2007101420560A CN 200710142056 A CN200710142056 A CN 200710142056A CN 101374331 A CN101374331 A CN 101374331A
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Abstract
The invention provides a method, a system and a device for configuring wireless link control layer series number (RLC SN), which include the following steps: determining the type for distributing RLC S is independent RLC SN or reusing group data convergence-level series number (PDCP SN), configuring the RLC entity of the sending terminal and the RLC entity of the receiving terminal according to the determined type of RLC SN. This type of determination of RLC SN distribution mode according to QoS parameter, instead of using fixed RLC SN distribution mode, can realize flexible configuration of RLC SN distribution mode, which has sufficiently developed the advantages of independent RLC SN mode and reused PDCP SN mode.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of method of configuring wireless link control layer sequence number, system and equipment.
Background technology
Along with the continuous development of network technology, in order to satisfy the application demand of mobile network in 10 years futures even longer time, third generation partner program (3GPP, 3
RdGeneration Partnership Project) started Long Term Evolution (LTE, Long Term Evolution) project since the second half year in 2004, be intended to provide the service of higher rate, better performance for the user.Evolution land radio access web (E-UTRAN among the LTE, Evolved Universal Terrestrial Radio Access Network) by evolution base station (eNB, E-UTRAN NodeB) forms, eNB provides the agreement of user's face and chain of command to stop to subscriber equipment (UE, User Equipment).
Fig. 1 is a LTE user face protocol stack schematic diagram of the prior art, as shown in Figure 1, in the protocol stack of eNB and UE, from the high level to the low layer, comprise successively: packet data convergence (PDCP, Packet DataConvergence Protocoal) layer, Radio Link control (RLC, Radio Link Control) layer, medium access control (MAC, Medium Access Control) layer, physical layer (PHY, Physicallayer).When transmitting terminal needs transmit traffic data to arrive receiving terminal, transmitting terminal at first is sent to the PDCP layer with the business datum that receives, high level from protocol stack transmits to low layer again, promptly from PDCP layer process rlc layer, the MAC layer, arrive the PHY layer of transmitting terminal at last, transmitting terminal sends to business datum by the physical channel of physical layer the physical layer of receiving terminal again, receiving terminal again from low layer to the reverse transmission of high level, promptly from PHY layer process MAC layer, rlc layer, arrive the PDCP layer at last, and pass through the more high-rise transmission of PDCP course receiving terminal.Wherein, described transmitting terminal and receiving terminal can be respectively eNB and UE, also can be respectively UE and eNB.
In above-mentioned transmission course from the high level to the low layer, the PDCP layer is with the PDCP Service Data Unit (SDU that receives, Service Data Unit) carry out head compression and encrypt after, add that the PDCP capitiform becomes PDCP protocol Data Unit (PDU, Protocol Data Unit) and sends to rlc layer; Wherein, comprise sequence number (SN, Sequence Number) in each PDCP head, be used to identify the order that each PDCP SDU sends, this SN is called PDCP SN.Rlc layer receives the PDCPPDU that comes from PDCP layer transmission, each PDCP PDU is carried out generate RLC PDU after the processing of rlc layer.Wherein, three kinds of data-transmission modes that the described processing of PDCP PDU being carried out rlc layer provides according to rlc layer can for: when transmission mode is transparent mode (TM, Transparent Mode) time, PDCP PDU does not need to add header through rlc layer and directly generates RLC PDU; When transmission mode is non-deterministic model (UM, Unacknowledge Mode) or during deterministic model (AM, Acknowledge Mode), need PDCP PDU carried out cascade, cut apart, existing cascade have again cut apart or do not have cascade and the processing cut apart after, add the RLC head, generate RLC PDU; Wherein, be included as the SN that each RLC PDU distributes in the RLC head of interpolation, identify the order that each RLC PDU produces, be convenient to receiving terminal the RLC PDU that receives is carried out sequence arrangement or reorganization PDCP PDU, this SN is called RLC SN.
Distribute the mode of RLC SN to mainly contain following two kinds at present:
One, the fixing mode of distributing independent RLC SN that adopts.Rlc layer all distributes a RLC SN for each RLCPDU that generates, and this RLC SN is added in the RLC head, and the RLC SN of distribution increases progressively in certain span successively, recycles.The RLC SN that this mode is distributed is continuous, realize simple when receiving terminal carries out sequence arrangement to the RLC PDU that receives, but, because the RLC SN that distributes for each RLC PDU is that the PDCP SN that is independent of wherein adds in addition, each RLC SN is about 8 to 14 bits, and this just makes RLC PDU increase certain expense because of RLC SN.
Two, the fixing mode of reusing PDCP SN that adopts.Transmitting terminal adds the PDCP SN of first PDCP PDU among the RLC PDU or PDCP PDU segmentation in the RLC head to as the RLC SN of this RLC PDU, the PDCP SN of each PDCP PDU or PDCP PDU segmentation in the deletion RLC PDU payload; When comprising PDCP PDU segmentation among the RLC PDU, increase side-play amount (offset) and indicate the position of cutting apart in the RLC head, wherein, first segmentation does not need to increase offset, and other segmentation all needs to increase offset.Fig. 2 a, Fig. 2 b, Fig. 2 c and Fig. 2 d are not cut apart with cascade, only cut apart, have only cascade, are existingly cut apart and adopt when cascade is arranged and reuse RDCPSN distributes RLC SN for RLC PDU schematic diagram in the prior art.Adopt this mode,, can save the expense of RLC PDU because RLC SN has reused PDCP SN; But, in this manner, when the processing existence of PDCP PDU is cut apart, owing to need in the RLC head, add offset and indicate the position of cutting apart, usually offset is about 11 bits, this does not have obvious effects for the expense of saving RLC PDU, but can increase the complexity that receiving terminal makes up PDCP PDU.
Because it all is that fixed configurations is in transmitting terminal and receiving terminal RLC entity that available technology adopting is distributed the mode of RLC SN for two kinds, this just makes the mode of existing configuration RLC SN can not give full play to two kinds of advantages of distributing RLC SN mode, very big limitation is arranged, and flexibility is lower.
Summary of the invention
The invention provides method, system and the equipment of a kind of RLC of configuration SN, be used to improve the flexibility that distributes RLC SN mode.
The method of a kind of collocation wireless link control sequence RLC SN, this method comprises:
According to business datum characteristics parameter, determine to distribute the type of RLC SN to be independent RLC SN or to reuse packet data convergence layer sequence number, for example PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines.
A kind of system that disposes RLC SN, this system comprises: the RLC entity of the RRC entity of transmitting terminal, the RLC entity of transmitting terminal and receiving terminal;
The RRC entity of transmitting terminal, be used for qos parameter according to reflection business datum characteristics, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines;
The RLC entity of transmitting terminal is used to accept the configuration of the RRC entity of described transmitting terminal;
The RLC entity of receiving terminal is used to accept the configuration of the RRC entity of described transmitting terminal.
A kind of RRC entity, this RRC entity comprises: acquiring unit, determining unit, dispensing unit;
Acquiring unit is used to obtain business datum characteristics parameter;
Determining unit is used for the business datum characteristics parameter obtained according to described acquiring unit, determines to distribute the type of RLCSN to be independent RLC SN or to reuse PDCP SN;
Dispensing unit, the type that is used for the RLC SN that determines according to described determining unit is configured the RLC entity of transmitting terminal RLC entity and receiving terminal.
A kind of RRC entity, this RRC entity comprises: receiving element and dispensing unit;
Receiving element is used to receive radio bearer and sets up message or radio bearer reconfiguration message;
Dispensing unit is used for setting up the RLC SN type information that message or radio bearer reconfiguration message comprise according to the radio bearer that described receiving element receives, and distributes the type configuration of RLC SN to be independent RLC SN or to reuse PDCP SN self RLC entity.
A kind of RLC entity, this RLC entity comprises: receiving element and acquiring unit;
Receiving element is used for receiving configuration primitive;
Acquiring unit is used for obtaining RLC SN type information from the configuration primitive that described receiving element receives, and described RLC SN type information comprises independent RLC SN or reuses PDCP SN type.
As can be seen from the above technical solutions, in the method that the embodiment of the invention provides, system and the equipment, the radio resource control layer of transmitting terminal is according to qos parameter, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the rlc layer of local terminal and the rlc layer of receiving terminal are configured, rather than adopt the mode of fixing distribution RLC SN according to the type of the RLC SN that determines.This mode of determining the type of distribution RLC SN according to the business datum characteristics, can realize distributing the flexible configuration of RLCSN mode, give full play to independent RLC SN mode and reuse the advantage that PDCP SN mode has, the bigger problem of expense that can either avoid the fixing under certain conditions independent RLC SN of use to cause, also can avoid under certain situation fixing the use to reuse the clear superiority that do not have that PDCP SN causes, introduce the problem of complexity on the contrary.
Description of drawings
Fig. 1 is a LTE user face protocol stack schematic diagram of the prior art;
Fig. 2 a is the schematic diagram of reusing PDCP SN when not cutting apart with cascade in the prior art;
Fig. 2 b is the schematic diagram of reusing PDCP SN when only cutting apart in the prior art;
Fig. 2 c is the schematic diagram of reusing PDCP SN when having only cascade in the prior art;
Fig. 2 d is the existing schematic diagram of cutting apart and reusing PDCP SN when cascade is arranged in the prior art;
The method flow diagram of the configuration RLC SN that Fig. 3 provides for the embodiment of the invention;
The method flow diagram that the local terminal rlc layer is configured that Fig. 4 provides for the embodiment of the invention;
The method flow diagram that the receiving terminal rlc layer is configured that Fig. 5 provides for the embodiment of the invention;
The system construction drawing of the configuration RLC SN that Fig. 6 provides for the embodiment of the invention;
The structure chart of the RRC entity of the transmitting terminal that Fig. 7 a provides for the embodiment of the invention;
The structure chart of the RRC entity of the receiving terminal that Fig. 7 b provides for the embodiment of the invention;
The structure chart of the RLC entity of the transmitting terminal that Fig. 8 a provides for the embodiment of the invention;
The structure chart of the RLC entity of the receiving terminal that Fig. 8 b provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
The method that the embodiment of the invention provides mainly comprises: according to business datum characteristics parameter, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines.
Wherein, described business datum characteristics parameter can be service quality (QoS, Quality of Service) parameter, or the parameter of other reflection business datum characteristics.All be that example is described in following examples with the qos parameter.
The method flow diagram of the configuration RLC SN that Fig. 3 provides for the embodiment of the invention, as shown in Figure 3, this method can may further comprise the steps:
Step 301: Radio Resource control (RRC, Radio Resource Control) entity of transmitting terminal determines to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN according to qos parameter.
In this step, the RRC entity of transmitting terminal is positioned at radio resource control layer, and radio resource control layer is the more high-rise of PDCP layer, and qos parameter is the RRC entity that core net offers described transmitting terminal.
The RRC of transmitting terminal can obtain the business datum characteristics of qos parameter reflection, according to the corresponding relation of business datum characteristics and RLC SN type, determines to distribute the type of RLC SN.
Wherein, qos parameter can reflect the size of packet, information such as transmission rate, infer the PDCP PDU that obtains after this business data packet is handled through the PDCP layer by these information, cut apart or cascade in the processing that rlc layer need carry out, so, the corresponding relation of business datum characteristics and RLC SN type can adopt following principle: when packet little, when transmission rate is hanged down, the PDCP PDU that this packet obtains after handling through the PDCP layer neither needs to cut apart at rlc layer does not usually need cascade yet, at this moment, the type of the distribution RLC SN that adopts can be for reusing PDCP SN, shown in Fig. 2 a, the shared SN of each RLC PDU and PDCP PDU like this, the expense that can save RLC PDU.
Little when packet, when transmission rate is high, the PDCPPDU that this packet obtains after handling through the PDCP layer is cascade in the processing that rlc layer need carry out usually, at this moment, the type of the distribution RLC SN that adopts can be for reusing PDCP SN, shown in Fig. 2 c, like this each RLC PDU only need with n PDCP PDU in the shared SN of first PDCP PDU, the SN of other n-1 PDCP PDU leaves out, and has just saved the expense of the RLCPDU of n SN generation like this with respect to the mode that adopts independent SN.Wherein n is the number of the PDCP PDU that comprises among the RLC PDU.
When packet is big, the PDCP PDU that this packet obtains after handling through the PDCP layer is to cut apart in the processing that rlc layer need carry out usually, at this moment, the type of the distribution RLC SN that adopts can be independent SN, shown in Fig. 2 b, each RLC PDU adopts independently RLC SN like this, the employing of comparing is reused PDCP SN and is realized comparatively simple, reuse PDCP SN if adopt, indicate the position of cutting apart, can not obviously reduce the expense among the RLC PDU owing to need to increase offset, and increased the complexity that receiving terminal makes up PDCP PDU, so, when needs are cut apart PDCP PDU, adopt independently RLC SN usually.
Therefore, can set a threshold value,, adopt and reuse PDCP SN type,, adopt independent RLC SN type when the business datum characteristics are packet during greater than setting threshold when the business datum characteristics are packet when being less than or equal to setting threshold.
After this step is finished, can (RB, RadioBearer) the RLC configuration information in the parameter be stored in the radio resource control layer as radio bearer with the type of the RLC SN that determines.
Step 302: the type of the RLC SN that the RRC entity basis of transmitting terminal is determined is configured the RLC entity of local terminal.
In this step, local terminal RLC entity is configured and can be undertaken by the configuration primitive between RRC entity and the local terminal RLC entity according to the RLC SN type of determining.Wherein, configuration primitive can be CRLC-CONFIG-REQ primitive, or other when being used for RRC the RLC entity being carried out function setting, reset, stop, continuing or revises special-purpose primitive.In following examples, all be described with CRLC-CONFRG-REQ primitive.
Step 303: the type of the RLC SN that the RRC entity basis of transmitting terminal is determined is configured the RLC entity of receiving terminal.
This step can be set up the RRC entity that process or RB reconfiguration course at first send to the RLC SN type information of determining receiving terminal by RB.
In flow process shown in Figure 3, step 302 and step 303 do not have fixing sequencing, also can first execution in step 303, and back execution in step 302; Also can while execution in step 302 and step 303.The execution of step 302 and step 303 can guarantee that transmitting terminal is consistent with the RLC SN type that receiving terminal adopts.
Specific implementation process to step 302 in the flow process shown in Figure 3 is described below, and Fig. 4 is the method flow diagram that the local terminal rlc layer is configured that the embodiment of the invention provides, and as shown in Figure 4, mainly comprises:
Step 401: the RRC entity of radio access layer radio resource control layer sends the CRLC-CONFIG-REQ primitive that carries RLC SN type information to the RLC of local terminal entity.
In this step, the RRC entity increases RLC SN type parameter (RLC SN type) in UM parameter set that CRLC-CONFIG-REQ carries and/or AM parameter set, the size of this RLC SN type can be 1 bit, can or reuse PDCP SN with the 0 or 1 independent RLC SN of sign.For example, when content was 0 in this RLC SN type field, it was independent RLC that expression distributes the type of RLC SN
SN, when content was 1 in this RLC SN type field, expression distributed the type of RLC SN for reusing PDCP SN.
Step 402: the RLC SN type that the RLC entity of transmitting terminal comprises the RLC SN type information that carries in the CRLC-CONFIG-REQ primitive that receives is as the mode of handling RLC SN.
The RLC entity of local terminal from CRLC-CONFIG-REQ the UM parameter set or the AM parameter set in obtain RLC SN type parameter, the RLC SN type that RLC SN type information is comprised is distributed the mode of RLC SN as self.After receiving PDCP PDU, the type information of the RLC SN that comprises according to this RLC SN type parameter is PDCP PDU to be handled the RLC PDU that the back forms to distribute RLC SN.
So far finish the flow process of step 302 among Fig. 3.
Specific implementation process to step 303 in the flow process shown in Figure 3 is described below, and Fig. 5 is the method flow diagram that the receiving terminal rlc layer is configured that the embodiment of the invention provides, and as shown in Figure 5, mainly comprises:
Step 501: the RRC entity of wireless access control layer sends the radio bearer that carries RLC SN type information to the RRC of receiving terminal entity and sets up message or radio bearer reconfiguration message in the transmitting terminal.
Wherein, radio bearer is set up and is carried RLC Info in message or the radio bearer reconfiguration message, and embodiment of the invention employing increases RLC SN type field and carries RLC SN type information in the RLC cell.The size of this RLC SN type field is 1 bit, can or reuse PDCP SN with the 0 or 1 independent RLC SN of sign.For example, when content was 0 in this RLC SN type field, it was independent RLC SN that expression distributes the type of RLC SN, and when content was 1 in this RLC SN type field, expression distributed the type of RLCSN for reusing PDCP SN.
Wherein, the mode of carrying RLC SN type information by radio bearer reconfiguration message is mainly used in: in the receiving course of business datum, the characteristics of business datum change, and need to change the configuration to receiving terminal RLC entity.
Step 502: the RRC entity of receiving terminal receives radio bearer and sets up message or radio bearer reconfiguration message, obtains the type information of the RLC SN that the RLC SN type field among the RLC Info carries.
Receiving terminal obtains after the RLC SN type, and the RLC SN type information that utilization is obtained is configured the RLC entity of local terminal, and the concrete configuration process can adopt flow process shown in Figure 4.After the RLC configuration of receiving terminal is finished, the RLC SN type that RLC SN type information comprises is handled the mode of RLC SN as self.When receiving RLC PDU, can this RLC PDU be sorted according to the type of this RLC SN, and PDCP PDU is wherein sorted or recombinates.This process is to distribute the inverse operation of RLC SN, is prior art, does not repeat them here.Also can adopt this RLC SN type to distribute RLC SN at receiving terminal during as transmitting terminal.
In addition, owing to also carry data-transmission mode information among the RLC Info, so, the data-transmission mode information that can also at first carry according to RLC Info after the RRC of receiving terminal entity reception radio bearer is set up message or radio bearer reconfiguration message is judged, when if data-transmission mode is TM, then do not need the RLC entity of local terminal is configured, the RLC entity of notice local terminal is handled process ends according to original TM mode treatment flow process; If transmission mode is AM or UM, then continue to carry out the step that the RLC entity to local terminal is configured.The transfer of data pattern information is judged it is because when the TM, rlc layer does not need to add the RLC head and directly generates RLC PDU, also just do not need to distribute RLC SN.
Step 503: receiving terminal returns that radio bearer is set up or radio bearer is reshuffled and finished response to transmitting terminal.
So far finish the flow process of step 303 among Fig. 3.
The system construction drawing of the configuration RLC SN that Fig. 6 provides for the embodiment of the invention, as shown in Figure 6, this system can comprise: the RLC entity 620 of the RRC entity 600 of transmitting terminal, the RLC entity 610 of transmitting terminal and receiving terminal.
The RRC entity 600 of transmitting terminal, be used for qos parameter according to reflection business datum characteristics, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines.
The RLC entity 610 of transmitting terminal is used to accept the configuration of the RRC entity 600 of transmitting terminal.
The RLC entity 620 of receiving terminal is used to accept the configuration of the RRC entity 600 of transmitting terminal.
This system can also comprise: the RRC entity 630 of receiving terminal, the radio bearer that is used for RRC entity 600 transmissions of receiving end/sending end is set up message or radio bearer reconfiguration message, and set up the RLC SN type information of determining that message or radio bearer reconfiguration message comprise according to this radio bearer, the RLC entity 620 of receiving terminal is configured.
The RRC entity 610 of transmitting terminal, the radio bearer that also is used for sending to the RRC of receiving terminal entity 630 the RLC SN type information of determining that comprises is set up message or radio bearer reconfiguration message.
Described transmitting terminal is an evolution base station eNB, and described receiving terminal is a user equipment (UE).
The structure chart of the RRC entity 600 of the transmitting terminal that Fig. 7 a provides for the embodiment of the invention, shown in Fig. 7 a, the RRC entity 600 of transmitting terminal can comprise: acquiring unit 601, determining unit 602, dispensing unit 603.
Acquiring unit 601 is used to obtain the qos parameter that reflects the business datum characteristics.
Determining unit 602 is used for the parameter of the reflection business datum characteristics obtained according to acquiring unit 601, determines to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN.
Wherein, dispensing unit 603 comprises: local terminal dispensing unit 6031 and opposite end dispensing unit 6032.
Local terminal dispensing unit 6031 is used for the RLC SN type information that determining unit 602 is determined is carried at the RLC entity that CRLC-CONFIG-REQ sends to transmitting terminal.
Opposite end dispensing unit 6032 is used for the RLC SN type informations that determining unit 602 is determined are carried at the RLC cell RLC Info of radio bearer message or radio bearer reconfiguration message, sends to the RRC entity of receiving terminal.
The RRC entity 600 of transmitting terminal also comprises: RB parameter storage unit 604 is used to store the RB parameter that comprises definite RLC SN type.
Opposite end dispensing unit 6032 also is used for obtaining the RLC SN type of determining that the RB parameter comprises from RB parameter storage unit 604.
The structure chart of the RRC entity 630 of the receiving terminal that Fig. 7 b provides for the embodiment of the invention, shown in Fig. 7 b, the RRC entity of this receiving terminal can comprise: receiving element 631 and dispensing unit 632.
Receiving element 631 is used to receive radio bearer and sets up message or radio bearer reconfiguration message.
Acquiring unit 6321 is used for obtaining radio bearer that receiving element 631 receives and sets up the RLC SN type information that message or radio bearer reconfiguration message comprise.
Local terminal dispensing unit 6322, the RLC SN type information that is used for that acquiring unit 6321 is obtained is carried at CRLC-CONFIG-REQ and sends to the RLC entity of self.
The RRC entity 630 of receiving terminal also comprises: judging unit 633, being used for that the radio bearer that receiving element 631 receives is set up the transmission mode information that message or radio bearer reconfiguration message comprise judges, if current transmission mode is TM, then sends and forbid notice to dispensing unit 632.
The structure chart of the RLC entity 610 of the transmitting terminal that Fig. 8 a provides for the embodiment of the invention, shown in Fig. 8 a, the RLC entity 610 of this transmitting terminal comprises: receiving element 611 and acquiring unit 612.
Receiving element 611 is used for receiving configuration primitive.
Acquiring unit 612 is used for obtaining RLC SN type information from the configuration primitive that receiving element 611 receives, and this RLC SN type information comprises independent RLC SN or reuses PDCP SN type.
The RLC entity 610 of this transmitting terminal can also comprise independent RLC SN processing unit 613 and reuse PDCP SN processing unit 614.
When independent RLC SN processing unit 613, the RLC SN type information that is used for obtaining at acquiring unit 612 are independent RLC SN type, RLC PDU is distributed independent RLC SN.
Reuse PDCP SN processing unit 614, be used for the RLC SN type information that obtains at acquiring unit 612 when reusing PDCP SN type, RLC PDU is distributed reuse PDCP SN.
The structure chart of the RLC entity 620 of the receiving terminal that Fig. 8 b provides for the embodiment of the invention, shown in Fig. 8 b, the RLC entity 620 of this transmitting terminal comprises: receiving element 621 and acquiring unit 622.
Receiving element 621 is used for receiving configuration primitive.
Acquiring unit 622 is used for obtaining RLC SN type information from the configuration primitive that receiving element 621 receives, and this RLC SN type information comprises independent RLC SN or reuses PDCP SN type.
The RLC entity 620 of receiving terminal can also comprise independent RLC SN processing unit 623 and reuse PDCPSN processing unit 624.
When independent RLC SN processing unit 623, the RLC SN type information that is used for obtaining at acquiring unit 622 are independent RLC SN type, RLC PDU is distributed independent RLC SN.
Reuse PDCP SN processing unit 624, be used for the RLC SN type information that obtains at acquiring unit 622 when reusing PDCP SN type, RLC PDU is distributed reuse PDCP SN.
By above description as can be seen, in the method that the embodiment of the invention provides, system and the equipment, the radio resource control layer of transmitting terminal is according to the parameter of reflection business datum characteristics, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the rlc layer of local terminal and the rlc layer of receiving terminal are configured, rather than adopt the mode of fixing distribution RLC SN according to the type of the RLC SN that determines.This mode of determining the type of distribution RLC SN according to the business datum characteristics, can realize distributing the flexible configuration of RLC SN mode, give full play to independent RLC SN mode and reuse the advantage that PDCP SN mode has, the bigger problem of expense that can either avoid the fixing under certain conditions independent RLC SN of use to cause, also can avoid under certain situation fixing the use to reuse the clear superiority that do not have that PDCP SN causes, introduce the problem of complexity on the contrary.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (16)
1. the method for a configuring wireless link control layer sequence number RLC SN, it is characterized in that, this method comprises: according to business datum characteristics parameter, determine to distribute the type of RLC SN to be independent RLC SN or to reuse packet data convergence layer sequence number, for example PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines.
2. method according to claim 1, it is characterized in that, described according to business datum characteristics parameter, determine to distribute the type of RLC SN to comprise: when the business datum characteristics of described business datum characteristics parameter reflection are the packet size, if the sizes values of packet is less than or equal to setting threshold, adopts and reuse the PDCPSN type;
If the sizes values of packet, then adopts independent RLC SN type greater than setting threshold.
3. method according to claim 1, it is characterized in that, the type of the RLC SN that described basis is determined is configured the RLC entity of transmitting terminal and comprises: described definite RLC SN type information is carried at the RLC entity that sends to transmitting terminal in the configuration primitive, and the RLC SN type that the RLC entity of described transmitting terminal comprises described RLCSN type information is as the mode of self processing RLC SN.
4. method according to claim 1, it is characterized in that, further comprised before the type of the RLC SN that described basis is determined is configured the RLC entity of receiving terminal: the RRC entity of transmitting terminal is carried at radio bearer with described definite RLC SN type information and sets up among the RLC cell RLC Info of message or radio bearer reconfiguration message, sends to the RRC entity of receiving terminal;
The type of the RLC SN that described basis is determined is configured the RLC entity of receiving terminal and comprises: the RRC entity of receiving terminal is carried at the RLC entity that sends to self in the configuration primitive with the RLC SN type information that comprises among the described RLC Info, and the RLC entity of described receiving terminal is handled the mode of RLC SN with the RLC SN type that RLC SN type information comprises as self.
5. method according to claim 4, it is characterized in that, also comprised before the RLC SN type information that the RRC of described receiving terminal entity comprises in described RLC Info is carried at the RLC entity that sends to self in the configuration primitive: the RRC entity of receiving terminal obtains transmission mode information from described RLC Info, when if current transmission mode is transparent mode TM, then notify the RLC entity of self to handle according to original TM pattern; When if current transmission mode is affirmation mode AM or Unacknowledged Mode UM, continue to carry out that the RLC SN type information that comprises among the described RLC Info is carried at the step that sends to the RLC entity of self in the configuration primitive.
6. method according to claim 4 is characterized in that, this method also comprises: described definite RLC SN type is included in the RRC entity that radio bearer RB parameter is stored in receiving terminal;
The RRC entity of described transmitting terminal obtains definite RLC SN type information from described RB parameter, execution is carried at radio bearer with described definite RLC SN type information and sets up among the RLC cell RLC Info of message or radio bearer reconfiguration message, sends to the step of the RRC entity of receiving terminal.
7. a system that disposes RLC SN is characterized in that, this system comprises: the RLC entity of the RRC entity of transmitting terminal, the RLC entity of transmitting terminal and receiving terminal;
The RRC entity of transmitting terminal, be used for qos parameter according to reflection business datum characteristics, determine to distribute the type of RLC SN to be independent RLC SN or to reuse PDCP SN, and the RLC entity of transmitting terminal and the RLC entity of receiving terminal are configured according to the type of the RLC SN that determines;
The RLC entity of transmitting terminal is used to accept the configuration of the RRC entity of described transmitting terminal;
The RLC entity of receiving terminal is used to accept the configuration of the RRC entity of described transmitting terminal.
8. system according to claim 7, it is characterized in that, this system also comprises: the RRC entity of receiving terminal, be used to receive the radio bearer that the RRC entity of described transmitting terminal sends and set up message or radio bearer reconfiguration message, and set up the RLC SN type information of determining that message or radio bearer reconfiguration message comprise according to described radio bearer, the RLC entity of described receiving terminal is configured;
The RRC entity of described transmitting terminal also is used for sending the radio bearer that comprises definite RLC SN type information to the RRC of described receiving terminal entity and sets up message or radio bearer reconfiguration message.
9. a RRC entity is characterized in that, this RRC entity comprises: acquiring unit, determining unit, dispensing unit;
Acquiring unit is used to obtain business datum characteristics parameter;
Determining unit is used for the business datum characteristics parameter obtained according to described acquiring unit, determines to distribute the type of RLCSN to be independent RLC SN or to reuse PDCP SN;
Dispensing unit, the type that is used for the RLC SN that determines according to described determining unit is configured the RLC entity of transmitting terminal RLC entity and receiving terminal.
10. RRC entity according to claim 9 is characterized in that, described dispensing unit comprises: local terminal dispensing unit and opposite end dispensing unit;
The local terminal dispensing unit is used for the RLC SN type information that described determining unit is determined is carried at the RLC entity that configuration primitive sends to transmitting terminal;
The opposite end dispensing unit is used for the RLC SN type information that described determining unit is determined is carried at the RLC cell RLC Info that radio bearer is set up message or radio bearer reconfiguration message, sends to the RRC entity of receiving terminal.
11. RRC entity according to claim 10 is characterized in that, described RRC entity also comprises: the RB parameter storage unit is used to store the RB parameter that comprises definite RLC SN type;
Described opposite end dispensing unit also is used for obtaining the RLC SN type of determining that the RB parameter comprises from described RB parameter storage unit.
12. a RRC entity is characterized in that, this RRC entity comprises: receiving element and dispensing unit;
Receiving element is used to receive radio bearer and sets up message or radio bearer reconfiguration message;
Dispensing unit is used for setting up the RLC SN type information that message or radio bearer reconfiguration message comprise according to the radio bearer that described receiving element receives, and distributes the type configuration of RLC SN to be independent RLC SN or to reuse PDCP SN self RLC entity.
13. RRC entity according to claim 12 is characterized in that, described dispensing unit comprises: acquiring unit and local terminal dispensing unit;
Acquiring unit is used for obtaining radio bearer that described receiving element receives and sets up the RLC SN type information that message or radio bearer reconfiguration message comprise;
The local terminal dispensing unit, the RLC SN type information that is used for that described acquiring unit is obtained is carried at CRLC-CONFIG-REQ and sends to the RLC entity of self.
14. RRC entity according to claim 12, it is characterized in that, described RRC entity also comprises: judging unit, being used for that the radio bearer that described receiving element receives is set up the transmission mode information that message or radio bearer reconfiguration message comprise judges, if current transmission mode is TM, then sends and forbid notice to described dispensing unit;
Described dispensing unit, also be used for receive that described judging unit sends forbid notice after, do not carry out the described operation that local terminal RLC entity is configured.
15. a RLC entity is characterized in that, this RLC entity comprises: receiving element and acquiring unit;
Receiving element is used for receiving configuration primitive;
Acquiring unit is used for obtaining RLC SN type information from the configuration primitive that described receiving element receives, and described RLC SN type information comprises independent RLC SN or reuses PDCP SN type.
16. RLC entity according to claim 15 is characterized in that, this RLC entity also comprises independent RLC SN processing unit and reuses PDCP SN processing unit;
When independent RLC SN processing unit, the RLC SN type information that is used for obtaining at described acquiring unit are independent RLC SN type, RLC PDU is distributed independent RLC SN;
Reuse PDCP SN processing unit, be used for the RLC SN type information that obtains at described acquiring unit when reusing PDCP SN type, RLC PDU is distributed reuse PDCP SN.
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