CN108512628A

CN108512628A - A kind of method and apparatus for higher layer transmission being used in base station, UE

Info

Publication number: CN108512628A
Application number: CN201710109709.9A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-02-24
Filing date: 2017-02-24
Publication date: 2018-09-07

Abstract

The invention discloses a kind of method and apparatus for higher layer transmission being used in base station, UE.First ray number is mapped as the second sequence number by UE.Wherein, the First ray number is an integer in first set, and second sequence number is an integer in second set.The first set includes K1 integer, and the second set includes K2 integer.The first set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.The First ray number and all corresponding first bit sequence of second sequence number.The present invention can ensure that user will not packet loss when cell switching or double-strand Jie Shi second communities group re-match.Further, the invention enables the sequence numbers of the base station data packet that either user equipment is transmitted or received when sending switching or double-strand connects re-matching to be continuous.

Description

A kind of method and apparatus for higher layer transmission being used in base station, UE

Technical field

The present invention relates to the transmission plans in wireless communication system, more particularly to the upper-layer protocol supported in wirelessly communicating Method and apparatus.

Background technology

In existing LTE (Long Term Evolution), each high-rise protocol data packet (PDU, Protocol Data Unit) there is corresponding sequence number (SN, Sequence Number).The length of sequence number is configured by high level, in difference The length of the lower sequence number of configuration is different.The field (tight interworking) is communicated in LTE-NR (New Radio) close coupling Jing Zhong, network side equipment and user equipment need to reconfigure higher layer entities (such as PDCP entities) in following situation：

Reconfigure second community group carrying (SCG bearer, Second Cell Group)；

Need to reconfigure higher layer entities (such as PDCP, Packet Data when between LTE and NR switching mutually Convergence Protocol entities),

After higher layer entities reconfigure, corresponding high-rise protocol data packet number (such as PDCP SN) also will be by again Configuration.

NR there is a strong possibility property supports various protocols data packet sequence row number length.In view of NR needs the transmission of support bigger Rate, NR need to support to compare the protocol data packet number length longer with LTE.

In the case where LTE-NR close coupling communicates (tight interworking) scene, the agreement number of source base station and target BS It is many according to the inconsistent situation of packet number length.Switching can cause a wherein side that cannot correctly understand another party between the two Protocol data packet number can cause packet loss in this way.In order to ensure that (lossless handover, are used primarily in lossless switching Under RLC-AM (Radio Link Control Acknowledge Mode) affirmation mode), need the re-matching for enhancing PDCP SN Mechanism.

Invention content

By inventor the study found that in LTE when a handover occurs, if the high-rise protocol data Bao Xu of source base station The length of the high-rise protocol data packet number (PDCP SN) of row number (such as PDCP SN) and target BS is inconsistent, base station It is discharged with user equipment (UE) and resets packet data convergence protocol (PDCP) entity of oneself.At this point, the PDCP transmitted PDU will not be retransmitted again, and some of which PDCP PDU may be not successfully delivered before, will be lost when switching in this way Packet.However, such method can not ensure lossless switching, adverse effect is brought for the business of highly reliable low delay in NR.

In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be arbitrarily combined with each other.Such as in the embodiment and embodiment in the UE of the application Feature may be used in base station, vice versa.

The invention discloses a kind of methods in first node that be used to wirelessly communicate, wherein includes the following steps：

First ray number is mapped as the second sequence number by step A..

Wherein, the First ray number is an integer in first set, and second sequence number is in second set An integer.The first set includes K1 integer, and the second set includes K2 integer.The first set It is the subset of the second set, the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.The First ray Number and all corresponding first bit sequence of second sequence number.

As one embodiment, in communicating (tight interworking) based on LTE-NR close coupling, LTE nodes and The bit sequence block packaged by higher layer entities (such as PDCP entities) between NR nodes or between NR nodes and NR nodes is all Including corresponding sequence number.The length of these sequence numbers is different.In order to ensure that different nodes can be mutually in communication Understand the different sequence number of length, one of node is needed can be correct as another node by First ray number mapping The second sequence number understood.And so on need the first set belonging to First ray number being mapped to belonging to the second sequence number Second set.Likewise, for user equipment (UE) node communicated simultaneously with LTE nodes and NR nodes, it is also desirable to by first Sequence number maps can be with the second sequence number of correct understanding as another node.Simultaneously by the first collection belonging to First ray number Close the second set being mapped to belonging to the second sequence number.

As one embodiment, the K1 integer is 0,1,2 ..., K1-1.

As one embodiment, the K2 integer is 0,1,2 ..., K2-1.

As one embodiment, the K1 is 2 positive integer power.

As one embodiment, the K2 is 2 positive integer power.

As one embodiment, the K1 integer is continuous, and the K2 integer is continuous.

As one embodiment, the First ray number and second sequence number are all associated with the first bit sequence Row.

As one embodiment, the First ray number and second sequence number all be used to identify first bit Sequence.

As one embodiment, the First ray number and second sequence number are all used for first bit sequence Index.

As one embodiment, first bit sequence is a PDCP PDU.

As one embodiment, first bit sequence is a PDCP business data packet (PDCP SDU, Service Data Unit)。

As one embodiment, first bit sequence is a high level PDU.

As one embodiment, first bit sequence is a higher layer service data packet SDU (Service Data Unit)。

As one embodiment, the first node is version 15 (Release 15) and base station later.

As a sub- embodiment of the embodiment, when the version 15 (Release 15) and base station later are switchings Target BS.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station later are in double-strand Connect the base station belonging to Xin Zhong second communities group.

As one embodiment, the first node is version 15 (Release 15) and user equipment later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment later are to cut User equipment when changing.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment later are double User equipment in linking communications.

As one embodiment, the mapping includes that First ray number and positive integer X modulus are obtained the second sequence number.

As a sub- embodiment of the embodiment, the value of the X is greater than 32 positive integer, and the value of the X is pre- It is definition or being configured by high-level signaling.

As a sub- embodiment of the embodiment, the value of the X be set 32,128,4096,32768, 262144 } value of a value in, the X is predefined or is configured by high-level signaling.

As one embodiment, the mapping includes that the bit sequence corresponding to First ray number is moved to right Y to obtain the Two sequence numbers.

As a sub- embodiment of the embodiment, the value of the Y is positive integer, the value of the Y be it is predefined or Person is configured by high-level signaling.

As one embodiment, by the above method, the First ray number in first node is mapped to the second sequence number, side Help the higher layer entities of first node that can work normally.

Specifically, according to an aspect of the present invention, the above method is characterized in that, the step A also includes following step Suddenly：

Step A0. receives the first bit group, and first bit group includes { First ray number, first bit Sequence }.

As one embodiment, first bit group is high-level signaling.

As one embodiment, first bit group is PDCP PDU.

As one embodiment, first bit group is high-rise PDU.

As one embodiment, first bit group is transmitted on X2 interface.

As a sub- embodiment of the embodiment, the interface is the interface between LTE base station and the base stations NR.

As a sub- embodiment of the embodiment, the interface is the interface between the base stations NR.

As one embodiment, first bit group is in upper transmission of eating dishes without rice or wine.

Step A10. sends the second bit group, and second bit group includes { second sequence number, first bit Sequence }.

As one embodiment, second bit group is high-level signaling.

As one embodiment, second bit group is PDCP PDU.

As one embodiment, second bit group is high-rise PDU.

As one embodiment, second bit group is in upper transmission of eating dishes without rice or wine.

Step A1. receives the second class bit group, and the second class bit group includes { the second class sequence number and described second The associated bit sequence of class sequence number }.

Wherein, the second class sequence number is an integer in the second set, second sequence number and described Relativeness between second class sequence number and first bit sequence and the described and described associated ratio of second class sequence number Tandem between special sequence is related.Second sequence number and the second class sequence number differ.

As one embodiment, the associated bit sequence of the described and described second class sequence number is PDCP PDU.

As one embodiment, the associated bit sequence of the described and described second class sequence number is PDCP SDU.

As one embodiment, the associated bit sequence of the described and described second class sequence number is high-rise PDU.

As one embodiment, the associated bit sequence of the described and described second class sequence number is high-rise SDU.

As one embodiment, second sequence number is more than the second class sequence number, and first bit sequence exists After the associated bit sequence of the described and described second class sequence number；Or second sequence number is less than the second class sequence Number, first bit sequence is before the associated bit sequence of the described and described second class sequence number.

As a sub- embodiment of the embodiment, second sequence number and the second class sequence number are continuous.

As one embodiment, second sequence number is more than the second class sequence number, and first bit sequence exists Before the associated bit sequence of the described and described second class sequence number；Or second sequence number is less than the second class sequence Number, first bit sequence is after the associated bit sequence of the described and described second class sequence number.

Step A2. sends first kind bit group, and the first kind bit group includes { first kind sequence number and described first The associated bit sequence of class sequence number }.

Wherein, the first kind sequence number is an integer in the first set, the First ray number and described Relativeness between first kind sequence number and first bit sequence and the described and described associated ratio of first kind sequence number Tandem between special sequence is related.The First ray number and the first kind sequence number differ.

As one embodiment, the described and described associated bit sequence of first kind sequence number is PDCP PDU.

As one embodiment, the described and described associated bit sequence of first kind sequence number is high-rise PDU.

As one embodiment, the First ray number is more than the first kind sequence number, and first bit sequence exists After the described and described associated bit sequence of first kind sequence number；Or the First ray number is less than the first kind sequence Number, first bit sequence is before the described and described associated bit sequence of first kind sequence number.

As a sub- embodiment of the embodiment, the First ray number and the first kind sequence number are continuous.

Specifically, according to an aspect of the present invention, the above method is characterized in that, the first node is user equipment (UE), first bit group and the second class bit group are sent by first service cell and second service cell respectively； Or the first node is base station, first bit group and the second class bit group are by network side equipment and end respectively End is sent.

As one embodiment, the sender of first bit group support 3GPP versions 14 (Release 14) or it Preceding version, the sender of second bit group support 3GPP versions 15 (Release 15) or version later.

As a sub- embodiment of the embodiment, the sender of first bit group supports 3GPP versions 15 (Release 15) or version later.The high layer sequence number, for example of the sender of first bit group and the sender of the second bit group Or the length of PDCP PDU sequence numbers is different.

As one embodiment, the first node supports 3GPP versions 15 (Release 15) or version later.

As one embodiment, connected by X2 interface between the network side equipment and the first node.

As one embodiment, the first service cell and the second service cell are belonging respectively to two network sides and set It is standby.

Specifically, according to an aspect of the present invention, the above method is characterized in that, the first node is user equipment (UE), the recipient of the first kind bit group and the recipient of second bit group are first service cell and second respectively Serving cell.

As one embodiment, the first service cell supports 3GPP versions 14 (Release 14) or version before This, the second service cell supports 3GPP versions 15 (Release 15) or version later.

As a sub- embodiment of the embodiment, the first service cell supports 3GPP versions 15 (Release 15) Or version later.The length of the high layer sequence number, for example or PDCP PDU sequence numbers of first service cell and second service cell It is different.

As one embodiment, the first node supports 3GPP versions 15 or version later.

The invention discloses a kind of methods in second node that be used to wirelessly communicate, wherein includes the following steps：

Second Sequence number maps are First ray number by step A..

As one embodiment, the K1 integer is 0,1,2 ..., K1-1.

As one embodiment, the K2 integer is 0,1,2 ..., K2-1.

As one embodiment, the K1 is 2 positive integer power.

As one embodiment, the K2 is 2 positive integer power.

As one embodiment, first bit sequence is a PDCP PDU.

As one embodiment, first bit sequence is a high level PDU.

As one embodiment, the second node is version 15 (Release 15) and base station later.

As a sub- embodiment of the embodiment, when the version 15 (Release 15) and base station later are switchings Source base station.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station later are in double-strand Connect the base station belonging to the group of the main plots Xin Zhong.

As one embodiment, the mapping includes that the second sequence number and positive integer X modulus are obtained First ray number.

As one embodiment, the mapping includes that the bit sequence corresponding to the second sequence number is moved to right Y to obtain the One sequence number.

As one embodiment, by the above method, the second Sequence number maps in second node are at First ray number, side Help the higher layer entities of second node that can work normally.

Step A0. sends the first bit group, and first bit group includes { First ray number, first bit Sequence }.

As one embodiment, first bit group is high-level signaling.

As one embodiment, first bit group is PDCP PDU.

As one embodiment, first bit group is high-rise PDU.

As one embodiment, first bit group is transmitted on X2 interface.

Step A10. receives the second bit group, and second bit group includes { second sequence number, first bit Sequence }.

As one embodiment, second information is high-level signaling.

As one embodiment, second bit group is high-level signaling.

As one embodiment, second bit group is PDCP PDU.

As one embodiment, second bit group is high-rise PDU.

Step A1. sends the second class bit group, and the second class bit group includes { the second class sequence number and described second The associated bit sequence of class sequence number }.

Step A2. receives first kind bit group, and the first kind bit group includes { first kind sequence number and described first The associated bit sequence of class sequence number }.

Specifically, according to an aspect of the present invention, the above method is characterized in that, the second node is user equipment (UE), the recipient of first bit group and the recipient of the second class bit group are first service cell and second respectively Serving cell；Or the second node is base station, the recipient of first bit group and connecing for the second class bit group Receipts person is by network side equipment and terminal respectively.

As one embodiment, the recipient of first bit group support 3GPP versions 14 (Release 14) or it Preceding version, the recipient of second bit group support 3GPP versions 15 (Release 15) or version later.

As a sub- embodiment of the embodiment, the recipient of first bit group supports 3GPP versions 15 (Release 15) or version later.The high layer sequence number, for example of the recipient of first bit group and the sender of the second bit group Or the length of PDCP PDU sequence numbers is different.

As one embodiment, the second node supports 3GPP versions 15 (Release 15) or version later.

As one embodiment, connected by X2 interface between the network side equipment and the second node.

Specifically, according to an aspect of the present invention, the above method is characterized in that, the second node is user equipment (UE), the sender of the first kind bit group and the sender of second bit group are first service cell and second respectively Serving cell.

The invention discloses a kind of first nodes that be used to wirelessly communicate, wherein including following module：

First processing module：For First ray number to be mapped as the second sequence number.

As one embodiment, above-mentioned first processing module is additionally operable to：

- receives the first bit group, and first bit group includes { First ray number, first bit sequence }；

- receives the second class bit group, and the second class bit group includes { the second class sequence number and the second class sequence Number associated bit sequence }.

As one embodiment, first bit group is high-level signaling.

As one embodiment, first bit group is PDCP PDU.

As one embodiment, first bit group is high-rise PDU.

As one embodiment, first bit group is transmitted on X2 interface.

- sends the second bit group, and second bit group includes { second sequence number, first bit sequence }.

- sends first kind bit group, and the first kind bit group includes { first kind sequence number and the first kind sequence Number associated bit sequence }.

As one embodiment, second bit group is high-level signaling.

As one embodiment, second bit group is PDCP PDU.

As one embodiment, second bit group is high-rise PDU.

Specifically, according to an aspect of the present invention, above-mentioned first modular character is, the first node is that user sets Standby (UE), first bit group and the second class bit group are sent out by first service cell and second service cell respectively It send；Or the first node is base station, first bit group and the second class bit group are by network side equipment respectively It is sent with terminal.

Specifically, according to an aspect of the present invention, above-mentioned first modular character is, the first node is that user sets The recipient of standby (UE), the recipient of the first kind bit group and second bit group is first service cell and the respectively Two serving cells.

The invention discloses a kind of second nodes that be used to wirelessly communicate, wherein including following module：

Second processing module：For being First ray number by the second Sequence number maps.

As one embodiment, the K1 integer is 0,1,2 ..., K1-1.

As one embodiment, the K2 integer is 0,1,2 ..., K2-1.

As one embodiment, the K1 is 2 positive integer power.

As one embodiment, the K2 is 2 positive integer power.

As one embodiment, first bit sequence is a PDCP PDU.

As one embodiment, first bit sequence is a high level PDU.

Specifically, according to an aspect of the present invention, above-mentioned Second processing module is characterized in that, is additionally operable to：

- sends the first bit group, and first bit group includes { First ray number, first bit sequence }.

- sends the second class bit group, and the second class bit group includes { the second class sequence number and the second class sequence Number associated bit sequence }.

As one embodiment, first bit group is high-level signaling.

As one embodiment, first bit group is PDCP PDU.

As one embodiment, first bit group is high-rise PDU.

As one embodiment, first bit group is transmitted on X2 interface.

- receives the second bit group, and second bit group includes { second sequence number, first bit sequence }；

- receives first kind bit group, and the first kind bit group includes { first kind sequence number and the first kind sequence Number associated bit sequence }.

Specifically, according to an aspect of the present invention, above-mentioned second modular character is, the second node is that user sets The recipient of standby (UE), the recipient of first bit group and the second class bit group is first service cell and the respectively Two serving cells；Or the second node is base station, the recipient of first bit group and the second class bit group Recipient is by network side equipment and terminal respectively.

Specifically, according to an aspect of the present invention, above-mentioned second modular character is, the second node is that user sets The sender of standby (UE), the sender of the first kind bit group and second bit group is first service cell and the respectively Two serving cells.

As one embodiment, existing public technology is compared, the present invention has following technical advantage：

- by First ray number mapping as the second sequence number or by the second Sequence number maps by becoming First ray Number so that it can understand the corresponding sequence number of bit sequence of other side's transmission mutually using the base station of different sequence number length.From And it avoids base station and loses the corresponding bit sequence group of sequence number because identification sequence number is unable to.It can thus ensure user It will not packet loss when cell switching or double-strand Jie Shi second communities group re-match.

- is by by relativeness and first bit sequence between First ray number and the first kind sequence number Tandem between the described and described associated bit sequence of first kind sequence number is mutually bound so that base station or user set It is standby to be continuous in the sequence number for sending the data packet that switching is transmitted or received when either double-strand connects re-matching.

Description of the drawings

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other Feature, objects and advantages will become more apparent：

Fig. 1 shows the flow chart of first node transmission according to an embodiment of the invention；

Fig. 2 shows the flow charts of first node transmission according to another embodiment of the invention；

Fig. 3 shows the flow chart of second node transmission according to an embodiment of the invention；

Fig. 4 shows the flow chart of the transmission of second node according to another embodiment of the invention；

Fig. 5 shows the flow chart that PDCP data packets when switching according to an embodiment of the invention are transmitted；

Fig. 6 shows the processing unit structure chart of first node according to an embodiment of the invention；

Fig. 7 shows the processing unit structure chart of second node according to an embodiment of the invention；

Specific implementation mode

Technical scheme of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing In the case of prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.

Embodiment 1

Embodiment 1 illustrates a kind of flow chart for the transmission that first node is initiated, as shown in Fig. 1.In attached drawing 1, base station N1 and base station N2 is the maintenance base station of the serving cell of user equipment (UE) U3.Fig. 1 describes the scene of uplink.

ForBase station N1, the first bit group is received in step slo, in step s 11 becomes First ray number Second sequence number receives the second bit group in step s 12.First bit group include the First ray number, described the One bit sequence }.Second bit group includes { second sequence number, first bit sequence }.

ForBase station N2, first kind bit group is received in step S20, sends the first bit group in the step s 21.It is described First kind bit group includes { first kind sequence number and the associated bit sequence of first kind sequence number }.First bit Group includes { First ray number, first bit sequence }.

ForUser U3, first kind bit group is sent in step s 30, is mapped to First ray number in step S31 For the second sequence number, the second bit group is sent in step s 32.The first kind bit group includes { first kind sequence number and institute State the associated bit sequence of first kind sequence number }.Second bit group includes { second sequence number, first bit Sequence }.

In embodiment 1, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As a sub- embodiment, the K1 integer is 0,1,2 ..., K1-1.

As a sub- embodiment, the K2 integer is 0,1,2 ..., K2-1.

As a sub- embodiment, the K1 is 2 positive integer power.

As a sub- embodiment, the K2 is 2 positive integer power.

As a sub- embodiment, the K1 integer is continuous, and the K2 integer is continuous.

As a sub- embodiment, the First ray number and second sequence number are all associated with first bit Sequence.

As a sub- embodiment, the First ray number and second sequence number all be used to identify first ratio Special sequence.

As a sub- embodiment, the First ray number and second sequence number are all used for the first bit sequence The index of row.

As a sub- embodiment, first bit sequence is a PDCP PDU.

As a sub- embodiment, first bit sequence is a PDCP SDU.

As a sub- embodiment, first bit sequence is a high level PDU.

As a sub- embodiment, first bit sequence is a high level SDU.

As a sub- embodiment, the base station N1 is version 15 (Release 15) and base station later.

As a sub- embodiment, the target base when version 15 (Release 15) and base station N1 later are switchings It stands.

As a sub- embodiment, the version 15 (Release 15) and base station N1 later are in double linking communications Base station belonging to second community group.

As a sub- embodiment, the base station N2 is 14 versions of Release and base station before.

As a sub- embodiment, the base station N2 is version 15 (Release 15) and base station later.

As a sub- embodiment, the source base station when base station N2 is switching.

As a sub- embodiment, the base station N2 is the base station in double linking communications belonging to the group of main plot.

As a sub- embodiment, the user equipment U3 is version 15 (Release 15) and user equipment later.

As a sub- embodiment, the use when version 15 (Release 15) and user equipment U3 later are switchings Family equipment.

As a sub- embodiment, the version 15 (Release 15) and user equipment U3 later are double linking communications In user equipment.

As a sub- embodiment, the mapping includes that First ray number and positive integer X modulus are obtained the second sequence number.

As a sub- embodiment, the value of the X is greater than 32 positive integer, the value of the X be it is predefined or It is configured by high-level signaling.

As a sub- embodiment, the value of the X is one gathered in { 32,128,4096,32768,262144 } The value of value, the X is predefined or is configured by high-level signaling.

As a sub- embodiment, the value of the Y is positive integer, and the value of the Y is predefined or passes through high level Signal deployment.

As a sub- embodiment, first bit group is high-level signaling.

As a sub- embodiment, first bit group is PDCP PDU.

As a sub- embodiment, first bit group is high-rise PDU.

As a sub- embodiment, first bit group is transmitted on X2 interface.

As a sub- embodiment, the interface is the interface between LTE base station and the base stations NR.

As a sub- embodiment, the interface is the interface between the base stations NR.

As a sub- embodiment, first bit group is in upper transmission of eating dishes without rice or wine.

As a sub- embodiment, second information is high-level signaling.

As a sub- embodiment, second bit group is high-level signaling.

As a sub- embodiment, second bit group is PDCP PDU.

As a sub- embodiment, second bit group is high-rise PDU.

As a sub- embodiment, second bit group is in upper transmission of eating dishes without rice or wine.

As a sub- embodiment, the first kind bit group includes { first kind sequence number and the first kind sequence number Associated bit sequence }.Wherein, the first kind sequence number is an integer in the first set, the First ray Relativeness number between the first kind sequence number and first bit sequence and the described and described first kind sequence number Tandem between associated bit sequence is related.The First ray number and the first kind sequence number differ.

As a sub- embodiment, the described and described associated bit sequence of first kind sequence number is PDCP PDU.

As a sub- embodiment, the described and described associated bit sequence of first kind sequence number is high-rise PDU.

As a sub- embodiment, the First ray number is more than the first kind sequence number, first bit sequence After the described and described associated bit sequence of first kind sequence number；Or the First ray number is less than the first kind sequence Row number, first bit sequence is before the described and described associated bit sequence of first kind sequence number.

As a sub- embodiment, the First ray number and the first kind sequence number are continuous.

Embodiment 2

Embodiment 2 illustrates the flow chart for the transmission that another first node is initiated, as shown in Fig. 2.In attached drawing 2, base The N4 and base station N5 that stands is the maintenance base station of the serving cell of user equipment (UE) U6.Fig. 2 describes the scene of downlink transfer.

ForBase station N4, the first bit group is received in step s 40, becomes First ray number in step S41 Second sequence number sends the second bit group in step S42.First bit group include the First ray number, described the One bit sequence }.Second bit group includes { second sequence number, first bit sequence }.

ForBase station N5, the second class bit group is sent in step s 50, sends the first bit group in step s 51.It is described First bit group includes { First ray number, first bit sequence }.The second class bit group includes { the second class sequence Row number and the associated bit sequence of the second class sequence number }.

ForUser U6, the second class bit group is sent in step S60, is mapped to First ray number in step S61 For the second sequence number, the second bit group is received in step S62.Second bit group include second sequence number, it is described First bit sequence }.The second class bit group includes { the second class sequence number and the associated bit of the second class sequence number Sequence }.

In embodiment 2, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As a sub- embodiment, the K1 integer is 0,1,2 ..., K1-1.

As a sub- embodiment, the K2 integer is 0,1,2 ..., K2-1.

As a sub- embodiment, the K1 is 2 positive integer power.

As a sub- embodiment, the K2 is 2 positive integer power.

As a sub- embodiment, first bit sequence is a PDCP PDU.

As a sub- embodiment, first bit sequence is a PDCP SDU.

As a sub- embodiment, first bit sequence is a high level PDU.

As a sub- embodiment, first bit sequence is a high level SDU.

As a sub- embodiment, the base station N4 is version 15 (Release 15) and base station later.

As a sub- embodiment, the target base when version 15 (Release 15) and base station N4 later are switchings It stands.

As a sub- embodiment, the version 15 (Release 15) and base station N4 later are in double linking communications Base station belonging to second community group.

As a sub- embodiment, the base station N5 is 14 versions of Release and base station before.

As a sub- embodiment, the base station N5 is version 15 (Release 15) and base station later.

As a sub- embodiment, the source base station when base station N5 is switching.

As a sub- embodiment, the base station N5 is the base station in double linking communications belonging to the group of main plot.

As a sub- embodiment, the user equipment U6 is version 15 (Release 15) and user equipment later.

As a sub- embodiment, the use when version 15 (Release 15) and user equipment U6 later are switchings Family equipment.

As a sub- embodiment, the version 15 (Release 15) and user equipment U6 later are double linking communications In user equipment.

As a sub- embodiment, first bit group is high-level signaling.

As a sub- embodiment, first bit group is PDCP PDU.

As a sub- embodiment, first bit group is high-rise PDU.

As a sub- embodiment, first bit group is transmitted on X2 interface.

As a sub- embodiment, second information is high-level signaling.

As a sub- embodiment, second bit group is high-level signaling.

As a sub- embodiment, second bit group is PDCP PDU.

As a sub- embodiment, second bit group is high-rise PDU.

As a sub- embodiment, the second class bit group includes { the second class sequence number and the second class sequence number Associated bit sequence }.Wherein, the second class sequence number is an integer in the second set, second sequence Relativeness number between the second class sequence number and first bit sequence and the described and described second class sequence number Tandem between associated bit sequence is related.Second sequence number and the second class sequence number differ.

As a sub- embodiment, the associated bit sequence of the described and described second class sequence number is PDCP PDU.

As a sub- embodiment, the associated bit sequence of the described and described second class sequence number is PDCP SDU.

As a sub- embodiment, the associated bit sequence of the described and described second class sequence number is high-rise PDU.

As a sub- embodiment, the associated bit sequence of the described and described second class sequence number is high-rise SDU.

As a sub- embodiment, second sequence number is more than the second class sequence number, first bit sequence After the associated bit sequence of the described and described second class sequence number；Or second sequence number is less than the second class sequence Row number, first bit sequence is before the associated bit sequence of the described and described second class sequence number.

As a sub- embodiment, second sequence number and the second class sequence number are continuous.

As a sub- embodiment, second sequence number is more than the second class sequence number, first bit sequence Before the associated bit sequence of the described and described second class sequence number；Or second sequence number is less than the second class sequence Row number, first bit sequence is after the associated bit sequence of the described and described second class sequence number.

Embodiment 3

Embodiment 3 illustrates a kind of flow chart for the transmission that second node is initiated, as shown in Fig. 3.In attached drawing 3, base station N7 and base station N8 is the maintenance base station of the serving cell of user equipment (UE) U9.Fig. 3 describes the scene of uplink.

ForBase station N7, the first bit group is received in step S70, and the second bit group is received in step S71.Described One bit group includes { First ray number, first bit sequence }.Second bit group includes { second sequence Number, first bit sequence }.

ForBase station N8, the second class bit group is received in step S80, in step S81 by the second Sequence number maps at For First ray number, the first bit group is sent in step S82.The second class bit group includes { the second class sequence number and institute State the second associated bit sequence of class sequence number }.First bit group includes { First ray number, first bit Sequence }.

ForUser U9, the second class bit group is sent in step S90, is mapped to First ray number in step S91 For the second sequence number, the second bit group is sent in step S92.The second class bit group includes { the second class sequence number and institute State the second associated bit sequence of class sequence number }.Second bit group includes { second sequence number, first bit Sequence }.

In embodiment 3, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As one embodiment, the K1 integer is 0,1,2 ..., K1-1.

As one embodiment, the K2 integer is 0,1,2 ..., K2-1.

As one embodiment, the K1 is 2 positive integer power.

As one embodiment, the K2 is 2 positive integer power.

As one embodiment, first bit sequence is a PDCP PDU.

As one embodiment, first bit sequence is a high level PDU.

As one embodiment, the base station N8 is version 15 (Release 15) and base station later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N8 later are switchings When source base station.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N8 later are double Base station in linking communications belonging to the group of main plot.

As a sub- embodiment, the base station N7 is 14 versions of Release and base station before.

As a sub- embodiment, the base station N7 is version 15 (Release 15) and base station later.

As a sub- embodiment, the target BS when base station N7 is switching.

As a sub- embodiment, the base station N7 is the base station in double linking communications belonging to second community group.

As one embodiment, the user equipment U9 is version 15 (Release 15) and user equipment later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U9 later are User equipment when switching.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U9 later are User equipment in double linking communications.

As a sub- embodiment, the mapping includes that the second sequence number and positive integer X modulus are obtained First ray number.

As a sub- embodiment, the mapping includes that the bit sequence corresponding to the second sequence number is moved to right Y to obtain First ray number.

As a sub- embodiment, first bit group is high-level signaling.

As a sub- embodiment, first bit group is PDCP PDU.

As a sub- embodiment, first bit group is high-rise PDU.

As a sub- embodiment, first bit group is transmitted on X2 interface.

As a sub- embodiment, second information is high-level signaling.

As a sub- embodiment, second bit group is high-level signaling.

As a sub- embodiment, second bit group is PDCP PDU.

As a sub- embodiment, second bit group is high-rise PDU.

Embodiment 4

Embodiment 4 illustrates the flow chart for the transmission that another first node is initiated, as shown in Fig. 4.In attached drawing 4, base The N10 and base station N11 that stands is the maintenance base station of the serving cell of user equipment (UE) U12.Fig. 4 describes the scene of downlink transfer.

ForBase station N10, the first bit group is received in the step s 100, and first kind bit group is sent in step S101. First bit group includes { First ray number, first bit sequence }.The first kind bit group includes { first Class sequence number and the associated bit sequence of first kind sequence number }.

ForBase station N11, send the second bit group in step s 110, in step S111 by the second Sequence number maps at For First ray number, the first bit group is sent in step S112.First bit group includes { First ray number, institute State the first bit sequence }.Second bit group includes { second sequence number, first bit sequence }.

ForUser U12, receive the second bit group in the step s 120, in step S121 by the second Sequence number maps at For First ray number, first kind bit group is received in step S122.Second bit group include second sequence number, First bit sequence }.The first kind bit group includes that { first kind sequence number and the first kind sequence number are associated Bit sequence }.

In embodiment 4, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As one embodiment, the K1 integer is 0,1,2 ..., K1-1.

As one embodiment, the K2 integer is 0,1,2 ..., K2-1.

As one embodiment, the K1 is 2 positive integer power.

As one embodiment, the K2 is 2 positive integer power.

As one embodiment, first bit sequence is a PDCP PDU.

As one embodiment, first bit sequence is a high level PDU.

As one embodiment, the base station N11 is version 15 (Release 15) and base station later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N11 later are to cut Source base station when changing.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N11 later be Base station in double linking communications belonging to the group of main plot.

As a sub- embodiment, the base station N10 is 14 versions of Release and base station before.

As a sub- embodiment, the base station N10 is version 15 (Release 15) and base station later.

As a sub- embodiment, the target BS when base station N10 is switching.

As a sub- embodiment, the base station N10 is the base station in double linking communications belonging to second community group.

As one embodiment, the user equipment U12 is version 15 (Release 15) and user equipment later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U12 later User equipment when being switching.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U12 later It is the user equipment in double linking communications.

As a sub- embodiment, first bit group is high-level signaling.

As a sub- embodiment, first bit group is PDCP PDU.

As a sub- embodiment, first bit group is high-rise PDU.

As a sub- embodiment, first bit group is transmitted on X2 interface.

As a sub- embodiment, second information is high-level signaling.

As a sub- embodiment, second bit group is high-level signaling.

As a sub- embodiment, second bit group is PDCP PDU.

As a sub- embodiment, second bit group is high-rise PDU.

Embodiment 5

The flow chart that a kind of PDCP data packets when embodiment 5 illustrates switching are transmitted, as shown in Figure 5.Base station in attached drawing 5 N13 and base station N14 is the maintenance base station of the serving cell of user equipment U15.Fig. 5 describes the scene of downlink transfer.

ForBase station N13, multiple PDCP PDU are transmitted in step s 130 and give user U15, by PDCP in step S131 The First ray number mapping of PDU becomes the second sequence number, by the PDCP PDU forwardings comprising the second sequence number in step S132 Give base station N14.

ForBase station N14,The PDCP PDU received are sent to user U15 in step S140.

ForUser U15,The mapping of the First ray number of PDCP PDU will be become the second sequence number in step S150, Reorder the PDCP PDU received in step S151.

As a sub- embodiment, the sequence number of the PDCP PDU is { 30,31,32,33,34 }.PDCP PDU 30, 32,34 are properly received by user, and PDCP PDU 31,33 are not properly received by user.

As a sub- embodiment, the PDCP PDU 31,33,35 are mapped to as PDCP PDU31, and 1,3.

As a sub- embodiment, the PDCP PDU 32,34 are mapped to as PDCP PDU 0,2.

As a sub- embodiment, the mapping includes that First ray number and 32 modulus of positive integer are obtained the second sequence Number.

As a sub- embodiment, the PDCP PDU 31,1,3 are transmitted to base station N14 by X2 interface.

As a sub- embodiment, the user sends PDCP state reports (Status Reports) to base station N14.

As a sub- embodiment, the PDCP state reports indicate the case where user receives PDCP PDU before.

As a sub- embodiment, the PDCP state reports include a string of bit sequences, will be properly received before user The corresponding bit position of PDCP PDU sequence numbers be 1, the corresponding bit position of PDCP PDU sequence numbers not being properly received is 0。

As one embodiment, the base station N13 is version 15 (Release 15) and base station later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N13 later are to cut Source base station when changing.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and base station N13 later be Base station in double linking communications belonging to the group of main plot.

As a sub- embodiment, the base station N14 is 14 versions of Release and base station before.

As a sub- embodiment, the base station N14 is version 15 (Release 15) and base station later.

As a sub- embodiment, the target BS when base station N14 is switching.

As a sub- embodiment, the base station N14 is the base station in double linking communications belonging to second community group.

As one embodiment, the user equipment U15 is version 15 (Release 15) and user equipment later.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U15 later User equipment when being switching.

As a sub- embodiment of the embodiment, the version 15 (Release 15) and user equipment U15 later It is the user equipment in double linking communications.

Embodiment 6

Embodiment 6 illustrates the structure diagram of the processing unit in a first node, as shown in Figure 6.In attached drawing 6, the One node processing device 100 is made of first processing module 100.

First processing module 100 be used to First ray number being mapped as the second sequence number.

In embodiment 6, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As a sub- embodiment, the K1 integer is 0,1,2 ..., K1-1.

As a sub- embodiment, the K2 integer is 0,1,2 ..., K2-1.

As a sub- embodiment, the K1 is 2 positive integer power.

As a sub- embodiment, the K2 is 2 positive integer power.

As a sub- embodiment, first bit sequence is a PDCP PDU.

As a sub- embodiment, first bit sequence is a PDCP SDU.

As a sub- embodiment, first bit sequence is a high level PDU.

As a sub- embodiment, first bit sequence is a high level SDU.

As a sub- embodiment, the first node is version 15 (Release 15) and base station later.

As a sub- embodiment, the target base when version 15 (Release 15) and base station later are switchings It stands.

As a sub- embodiment, the version 15 (Release 15) and base station later are in double linking communications Base station belonging to two cell groups.

As a sub- embodiment, the first node is version 15 (Release 15) and user equipment later.

As a sub- embodiment, the user when version 15 (Release 15) and user equipment later are switchings Equipment.

As a sub- embodiment, the version 15 (Release 15) and user equipment later are in double linking communications User equipment.

Specifically, the first processing module 100 is also used for：

In embodiment 6, the second class sequence number is an integer in the second set, second sequence number and Relativeness between the second class sequence number is associated with first bit sequence with the described and described second class sequence number Bit sequence between tandem it is related.Second sequence number and the second class sequence number differ.

As a sub- embodiment, first bit group is transmitted on X2 interface.

Specifically, the first processing module 100 is also used for：

The second bit group is sent, second bit group includes { second sequence number, first bit sequence }.

First kind bit group is sent, the first kind bit group includes { first kind sequence number and the first kind sequence Number associated bit sequence }.

In embodiment 6, the first kind sequence number is an integer in the first set, the First ray number and Relativeness between the first kind sequence number is associated with first bit sequence with the described and described first kind sequence number Bit sequence between tandem it is related.The First ray number and the first kind sequence number differ.

Embodiment 7

Embodiment 7 illustrates the structure diagram of the processing unit in a second node, as shown in Figure 7.In attached drawing 7, the Two node processing devices 200 are made of Second processing module 200.

Second processing module 200 be used to the second Sequence number maps be First ray number.

In embodiment 7, the First ray number is an integer in first set, and second sequence number is the second collection An integer in conjunction.The first set includes K1 integer, and the second set includes K2 integer.Described first Set is the subset of the second set, and the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.Described first Sequence number and all corresponding first bit sequence of second sequence number.

As a sub- embodiment, first bit sequence is a PDCP PDU.

As a sub- embodiment, first bit sequence is a PDCP SDU.

As a sub- embodiment, first bit sequence is a high level PDU.

As a sub- embodiment, first bit sequence is a high level SDU.

As a sub- embodiment, the second node is version 15 (Release 15) and base station later.

As a sub- embodiment, the source base station when version 15 (Release 15) and base station later are switchings.

As a sub- embodiment, the version 15 (Release 15) and base station later are main in double linking communications Base station belonging to cell group.

Specifically, the Second processing module 200 is also used for：

The first bit group is sent, first bit group includes { First ray number, first bit sequence }.

The second class bit group is sent, the second class bit group includes { the second class sequence number and the second class sequence Number associated bit sequence }.

In embodiment 7, the second class sequence number is an integer in the second set, second sequence number and Relativeness between the second class sequence number is associated with first bit sequence with the described and described second class sequence number Bit sequence between tandem it is related.Second sequence number and the second class sequence number differ.

As a sub- embodiment, first bit group is high-level signaling.

As a sub- embodiment, first bit group is PDCP PDU.

As a sub- embodiment, first bit group is high-rise PDU.

As a sub- embodiment, first bit group is transmitted on X2 interface.

Specifically, Second processing module 200 is also used for：

The second bit group is received, second bit group includes { second sequence number, first bit sequence }；

First kind bit group is received, the first kind bit group includes { first kind sequence number and the first kind sequence Number associated bit sequence }.

In embodiment 7, the first kind sequence number is an integer in the first set, the First ray number and Relativeness between the first kind sequence number is associated with first bit sequence with the described and described first kind sequence number Bit sequence between tandem it is related.The First ray number and the first kind sequence number differ.

As a sub- embodiment, second bit group is high-level signaling.

As a sub- embodiment, second bit group is PDCP PDU.

As a sub- embodiment, second bit group is high-rise PDU.

One of ordinary skill in the art will appreciate that all or part of step in the above method can be referred to by program Related hardware is enabled to complete, described program can be stored in computer readable storage medium, such as read-only memory, hard disk or light Disk etc..Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuit.Phase It answers, each modular unit in above-described embodiment, example, in hardware realization may be used, it can also be by the form of software function module It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE and terminal in the present invention include but unlimited In RFID, internet-of-things terminal equipment, MTC (Machine Type Communication, machine type communication) terminal is vehicle-mounted logical Believe equipment, wireless sensor, card of surfing Internet, mobile phone, tablet computer, the wireless telecom equipments such as notebook.Base station in the present invention, base Station equipment and network side equipment include but not limited to macrocell base stations, and microcell base station, Home eNodeB, relay base station etc. is wireless Communication equipment.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in the protection of the present invention Within the scope of.

Claims

1. a kind of method in first node that be used to wirelessly communicate, wherein include the following steps：

First ray number is mapped as the second sequence number by step A..

Wherein, the First ray number is an integer in first set, and second sequence number is one in second set A integer.The first set includes K1 integer, and the second set includes K2 integer.The first set is institute The subset of second set is stated, the K1 and the K2 are positive integer respectively, and the K1 is less than the K2.The First ray number and All corresponding first bit sequence of second sequence number.

2. according to the method described in claim 1, it is characterized in that, the step A is also comprised the following steps：

Step A0. receives the first bit group, and first bit group includes { First ray number, the first bit sequence Row }.

3. according to claim 1, the method described in 2, which is characterized in that the step A is also comprised the following steps：

Step A10. sends the second bit group, and second bit group includes { second sequence number, the first bit sequence Row }.

4. according to claim 1, the method described in 2, which is characterized in that the step A is also comprised the following steps：

Step A1. receives the second class bit group, and the second class bit group includes { the second class sequence number and the second class sequence The associated bit sequence of row number }.

Wherein, the second class sequence number is an integer in the second set, second sequence number and described second Relativeness between class sequence number and first bit sequence and the described and described associated bit sequence of second class sequence number Tandem between row is related.Second sequence number and the second class sequence number differ.

5. according to claim 1, the method described in 3, which is characterized in that the step A is also comprised the following steps：

Step A2. sends first kind bit group, and the first kind bit group includes { first kind sequence number and the first kind sequence The associated bit sequence of row number }.

Wherein, the first kind sequence number is an integer in the first set, the First ray number and described first Relativeness between class sequence number and first bit sequence and the described and described associated bit sequence of first kind sequence number Tandem between row is related.The First ray number and the first kind sequence number differ.

6. according to the method described in claim 4, it is characterized in that, the first node is UE, first bit group and institute Stating the second class bit group is sent by first service cell and second service cell respectively；Or the first node is base station, First bit group and the second class bit group are sent by network side equipment and terminal respectively.

7. according to the method described in claim 5, it is characterized in that, the first node is UE, the first kind bit group Recipient and the recipient of second bit group are first service cell and second service cell respectively.

8. a kind of method in second node that be used to wirelessly communicate, wherein include the following steps：

Second Sequence number maps are First ray number by step A..

9. according to the method described in claim 8, it is characterized in that, the step A is also comprised the following steps：

Step A0. sends the first bit group, and first bit group includes { First ray number, the first bit sequence Row }.

10. according to claim 8, the method described in 9, which is characterized in that the step A is also comprised the following steps：

Step A10. receives the second bit group, and second bit group includes { second sequence number, the first bit sequence Row }.

11. according to claim 8, the method described in 9, which is characterized in that the step A is also comprised the following steps：

Step A1. sends the second class bit group, and the second class bit group includes { the second class sequence number and the second class sequence The associated bit sequence of row number }.

12. according to claim 8, the method described in 10, which is characterized in that the step A is also comprised the following steps：

Step A2. receives first kind bit group, and the first kind bit group includes { first kind sequence number and the first kind sequence The associated bit sequence of row number }.

13. according to the method for claim 11, which is characterized in that the second node is UE, first bit group Recipient and the recipient of the second class bit group are first service cell and second service cell respectively；Or described second Node is base station, and the recipient of the recipient of first bit group and the second class bit group is by network side equipment respectively And terminal.

14. according to the method for claim 12, which is characterized in that the second node is UE, the first kind bit group Sender and the sender of second bit group be first service cell and second service cell respectively.

15. a kind of first node that be used to wirelessly communicate, wherein including following module：

16. the first node according to claim 15 for wireless communication, which is characterized in that the first processing module It is additionally operable to：

- receives the second class bit group, and the second class bit group includes that { the second class sequence number and the second class sequence number close The bit sequence of connection }.

17. the first node according to claim 15 for wireless communication, which is characterized in that the first processing module It is additionally operable to：

- sends first kind bit group, and the first kind bit group includes that { first kind sequence number and the first kind sequence number close The bit sequence of connection }.

18. a kind of second node that be used to wirelessly communicate, wherein including following module：

19. the second node according to claim 18 for wireless communication, which is characterized in that the Second processing module It is additionally operable to：

- sends the second class bit group, and the second class bit group includes that { the second class sequence number and the second class sequence number close The bit sequence of connection }.

20. the second node according to claim 18 for wireless communication, which is characterized in that the Second processing module It is additionally operable to：

- receives first kind bit group, and the first kind bit group includes that { first kind sequence number and the first kind sequence number close The bit sequence of connection }.