CN1464755A - Communication method between base station of radio communication system - Google Patents
Communication method between base station of radio communication system Download PDFInfo
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- CN1464755A CN1464755A CN 02112284 CN02112284A CN1464755A CN 1464755 A CN1464755 A CN 1464755A CN 02112284 CN02112284 CN 02112284 CN 02112284 A CN02112284 A CN 02112284A CN 1464755 A CN1464755 A CN 1464755A
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Abstract
The invention discloses a method of communication for base stations in wireless communication system characterized by that, the user end data are categorized according to their data type and the user end data of each data type are packed in the data frame by a multiplexing mode, wherein each data type packed in the data frame is identified by the corresponding data type mark. When the base station receives the user end data, it can unpack the user end data of each data type from the data frame according to the relative relation between each data type and the data type mark. The method by the invention can improve transmission efficiency reduce delay and save channel resource.
Description
Invention field
The present invention relates to the communication means between the base station in a kind of wireless communication system, particularly a kind of communication means based on radio communication system base station interface (IuNB).
Background technology
Fig. 1 is the schematic diagram of 3GPP network configuration, this network can be divided into core net (CN) and Access Network (UTRAN) two large divisions, wherein Serving GPRS Support Node/mobile switching centre's (being designated hereinafter simply as SGSN/MSC) belongs to the core net part, and each radio network controller (RNC) and base station (Node B) belongs to UTRAN.As shown in Figure 1, RNC and SGSN/MSC link to each other by Iu interface (interface between RNC and the core net), and the interface control protocol is called Radio Access Network Application Part (RNAP); Link to each other by the Iur interface between RNC and the RNC, the interface control protocol is called Radio Network Subsystem Application Part (RNSAP); Link to each other by Iub interface between RNC and Node B or the base station, the interface control protocol is called WCDMA system base-station applying portion (NBAP); Subscriber equipment (UE) is crossed air interface Uu with UTRAN Netcom and is linked to each other.
In R5 (the 5th version) stage of 3GPP (third generation partnership project) standard, each network base units all can directly link to each other with the edge router of IP network, and for example RNC and Node B can distinguish directly and edge router (Edge Router) links, referring to Fig. 2.In this structure, RNC and Node B become peer entity by original hierarchical relationship, can realize direct communication between the Node B and between Node B and the RNC.But in present UTRAN system, the transmission controlled function overwhelming majority is still finished by RNC, a RNC need manage a plurality of Node B, so the RNC overload, thereby causes the delay of signaling process and data processing and cause the anxiety of system resources such as buffer memory, common signal channel.Focus on the bottleneck that causes in order to overcome RNC, part RNC function can be transferred to Node B, thereby the process control between the interior entity of UTRAN is shifted to distributed management gradually by centralized management.But along with RNC partial function entity is transferred to NodeB, the demand of communicating by letter between the Node B will increase, for example insert in fast cell selection (FCS) processing of (HSDPA) at the high-speed downstream bag, owing to adopt distributed protocol data cell (PDU) formation to replace the centralized PDU formation of RNC, therefore must between Node B, transmit PDU formation synchronizing information continually.If the information exchange between the NodeB still will be passed through RNC, then will be subjected to the time-delay restriction of long transmission path and Iub/Iur interface, cause system effectiveness to descend.
For this reason, as shown in Figure 1, between base station (Node B), provide logic interfacing IuNB to realize directly transmitting data.By adopting the IuNB interface to realize that the direct transmission data between the base station can obviously alleviate the data processing load of RNC, eliminate the influence of Iub/Iur interface delay, and then improve the efficient of wireless communication system.
Summary of the invention
The purpose of this invention is to provide institute's communication means between the interior base station of a kind of wireless communication system, it can improve the data transmission efficiency based on the IuNB interface, further reduces to postpone, thereby improves system effectiveness.
According to the communication means between the base station in the wireless communication system of the present invention, when one of them base station in the wireless communication system as transmit leg through (IuNB) interface between radio communication system base station when transmitting the user face data of forming by Frame as another base station of recipient, comprise following steps:
(1) between above-mentioned two base stations, sets up a transmission channel;
(2) described transmission base station is encapsulated into user face data in the described Frame user face data of every kind of data type to transmit according to the data type classification and with multiplex mode on described transmission channel, and the every kind of data type that is encapsulated in the described Frame is all identified with corresponding data type sign; And
(3) described reception base station is when receiving user face data, and according to the corresponding relation of every kind of data type and data type sign, deblocking takes on the user face data of every kind of data type from described Frame.
Therefore, according to method of the present invention, the whole user face datas that transmit between two base stations all are multiplexed on the transmission channel between the base station, therefore compare with the mode of common transport channels transmission user face data through many special uses with prevailing system, can improve efficiency of transmission, reduce delay and save channel resource.
Description of drawings
By below in conjunction with the detailed description of accompanying drawing to the embodiment of the invention, can further understand target of the present invention, feature and advantage, wherein:
Fig. 1 is the schematic diagram of 3GPP network configuration;
Fig. 2 is a kind of network configuration based on the IP transmission according to 3GPP standard R5 definition;
Fig. 3 is the schematic diagram according to user face protocol stack on the IuNB interface of the inventive method;
Fig. 4 is the schematic diagram according to a kind of IuNB FP protocol frame structure of the present invention; And
Fig. 5 is the schematic diagram according to another kind of IuNB FP protocol frame structure of the present invention.
Fig. 6 is the flow chart of the link establishment of user's face and release on the IuNB interface;
Embodiment
In a wireless communication system, the signal that transmits between the base station comprises the signaling-information that is used for control transmission and the data-signal that comprises business datum, and in this article, user face data is interpreted as the various data of being carried on above-mentioned data-signal.In existing wireless communication system, these business datums of (IuNB) interface transmission are carried on respectively on the Common transport channel or dedicated transmission channel different in the wireless access network (RAN) according to different types through between radio communication system base station, and in the method for the invention, on user's face all data no matter its under prevailing system through which kind of Channel Transmission, promptly no matter be which kind of data type, they all transmit on a transmission channel based on the IuNB interface between the base station with multiplex mode, and use the sign such as channel type and channel id to be distinguished.In addition, all can adopt certain protection mechanism to improve the accuracy of transfer of data, for example transmit data and can adopt the Cyclic Redundancy Check verification for the data of each type.
Below by accompanying drawing the specific embodiment of the present invention is described.
1, IuNB interface user plane protocol stack
The IuNB interface provides transmission data and functions such as signaling, management transmission network, transmission channel and IuNB interface resource between the base station.For this reason, transmission of reply signaling and transfer of data definition corresponding protocol stack, wherein, the former is called IuNB interface control plane protocol stack, and the latter is called IuNB interface user plane protocol stack.In the present invention, owing to only relate to the transmission of user face data, the therefore description of omitting relevant controlling face protocol stack.
According to one embodiment of the present of invention, the user face protocol stack of IuNB interface comprises 5 layers from the bottom to top, wherein, ground floor is for adopting the L1 layer of layer 1 (L1) agreement, the second layer is for adopting the L2 layer of layer 2 (L2) agreement, the 3rd layer is employing internet (IP) protocol of I P layer, the 4th layer of UDP layer for the employing udp protocol, and layer 5 is for adopting IuNB FP protocol of I uNB FP layer.User face data is encapsulated as this protocol frame according to this layer protocol during through each layer in the protocol stack,, constitutes next layer protocol frame after the control information of additional next layer protocol of last layer protocol frame that is.
In this protocol stack structure, L1 agreement, L2 agreement, IP agreement and udp protocol all are that those skilled in that art know, and therefore repeat no more.It is worthy of note, above-mentioned protocol stack structure is not unique, in fact can also there be other to meet the protocol stack structure of IuNB interface specification, be that the number of plies of protocol stack and agreement that every layer is selected for use can also have alternate manner, for the one of ordinary skilled in the art, after having read this specification, be not difficult above-mentioned protocol stack structure is made various changes, so the spirit and scope of the present invention should not limited by concrete protocol stack structure.
2, IuNB FP frame structure
User face data through IuNB FP layer after by after the data type sign of affix identification data type and other control information to constitute IuNB FP frame.In other words, according to data type user face data being multiplexed into the process of transmitting on the transmission channel between the base station can realize in IuNB FP layer.
Below by accompanying drawing several implementation structures of IuNB FP protocol frame are described.
Fig. 4 is a kind of schematic diagram of IuNB FP protocol frame structure.In Fig. 4, the FP sequence number is represented this frame number, and originally the user face data in various special uses or common transport channels transmission will be divided into different data types according to the difference of channel and give corresponding data type sign to be multiplexed in the IuNB FP frame.Particularly; suppose that channel has the n bar; then as shown in Figure 4; every the interior user face data of channel is multiplexed in this frame with after the FP sequence number; data for every channel; (transmission channel kinds not only refers to the public or special attribute of channel by the transmission channel kinds under this channel of sign is when multichannel transmits for it; but also comprise its functional attributes; for example Reverse Access Channel is considered as dissimilar channels with CPCH owing to function is different) the channel type territory; identify the channel designator territory of the numbering of this channel in affiliated channel type; the transmission block sequence number territory of user face data piece sequence number in current channel of sign upper-layer protocol encapsulation; the transformat indication territory of sign transport block transmission form; transmission block as the user face data of upper-layer protocol encapsulation; data fields such as protection mechanism territory and filling information territory are formed; the protection mechanism territory provides the transmission Data Protection; can be the CRC check sign indicating number usually for example, and be packed into the byte-aligned of the filler of right quantity in the filling information territory with the maintenance frame structure.Owing to utilize channel type and channel designator just can distinguish the difference of these user face datas in the time of in user face data being multiplexed into same IuNB FP frame, so they can be considered as the data type sign.But the implication of data type sign only is not interpreted as to narrow sense channel type and channel designator among the present invention, on the contrary, and can be so long as can be enough to distinguish the sign of difference in user face data is multiplexed into IuNB FP frame the time as the data type sign.
Because every kind of channel type may comprise some channels, in the time of therefore when user face data is multiplexed into the IuNBFP frame in, can be further the channel ownership of same type be identified with the omission channel type together.Fig. 5 is a kind of schematic diagram that omits the IuNB FP protocol frame structure of channel type sign.Suppose when multichannel transmits, to have in n kind channel type and every type of channel and comprise some channels, wherein channel type 1 comprises m bar channel, then as shown in Figure 5, after the FP sequence number, user face data at first belongs to for after the n class according to channel type puts into IuNB FP frame, user face data for each type channels is arranged in order according to channel designator again, and for example the data of m bar channel promptly are sequentially arranged on the position of respective channels Class1 in the IuNB FP frame in the channel type 1.For the data on every channel, except not comprising the channel type territory, therefore its structure and shown in Figure 4 just the same repeats no more.
It is worthy of note, can realize that the frame structure that user face data is multiplexed on the transmission channel between the base station according to data type can't be exhaustive, and all these frame structures all belong to scope of the present invention.
3, inter base station communication flow process
Below by Fig. 6 the method utilize method of the present invention to communicate is described between the base station.User face data communication between the base station comprises 3 key steps: user face data transfer step and IuNB link release steps on IuNB link establishment step, the IuNB link, below describe respectively.
As shown in Figure 6, in IuNB link establishment step, at first, 1 dominant base 2 to the reception user face data from the base station that sends user face data sends the request (InterNodeBConnection Request) of setting up logical links.Then, dominant base 2 generates binding ID and puts into to set up according to the wireless network layer ID of dominant base 2 and transport layer ID and send to from the base station 1 behind the link response (InterNodeBConnection Setup) after receiving above-mentioned request.At last, from base station 1 receive set up link response after the distribute links resource, and send link establishments to dominant base 2 and finish message (InterNodeB ConnectionSetup Complete), so far between two base stations, set up the IuNB link, also promptly set up a transmission channel.
On the IuNB link in the user face data transfer step, 1 transmits the transmission channel that user face data is multiplexed into the IuNB link according to the IuNB user face protocol stack from the base station, the user face data that dominant base 2 then receives from the transmission channel of IuNB link according to the decapsulation of IuNB user face protocol stack.
When user plane data transfer finishes, promptly enter IuNB link release steps.In this step, at first, 1 to dominant base 2 transmission requirement release chain circuit messages (InterNodeB ConnectionRelease) from the base station.Then, dominant base 2 discharges the resource relevant with this link according to the message that receives, and to 1 transmission link discharges the message (InterNodeB Connection Release Complete) that finishes from the base station.At last, after receiving that link discharges the message that finishes, discharging the IuNB link circuit resource of self from base station 1, finish the release of IuNB link between the base station thus, also is the release of transmission channel.
Claims (8)
1. the communication means between the base station in the wireless communication system, when one of them base station in the wireless communication system as transmit leg through (IuNB) interface between radio communication system base station when transmitting the user face data of forming by Frame as another base station of recipient, it is characterized in that, comprise following steps:
(1) between above-mentioned two base stations, sets up a transmission channel;
(2) described transmission base station is encapsulated into user face data in the described Frame user face data of every kind of data type to transmit according to the data type classification and with multiplex mode on described transmission channel, and the every kind of data type that is encapsulated in the described Frame is all identified with corresponding data type sign; And
(3) described reception base station is when receiving user face data, and according to the corresponding relation of every kind of data type and data type sign, deblocking takes on the user face data of every kind of data type from described Frame.
2. the communication means in the wireless communication system as claimed in claim 1 between the base station is characterized in that the described step (1) of setting up a transmission channel between above-mentioned two base stations further comprises following steps:
(1a) request of setting up transmission channel is sent to described reception base station in described transmission base station;
(1b) described reception base station is after receiving above-mentioned request of setting up transmission channel, generates binding ID and put into according to its wireless network layer ID and transport layer ID to send to described transmission base station after setting up link response; And
(1c) described transmission base station receive above-mentioned set up link response after the distribute links resource, and send link establishment to described reception base station and finish message and can on described transmission channel, transmit user face data with indication.
3. the communication means in the wireless communication system as claimed in claim 2 between the base station is characterized in that, when user plane data transfer finishes, further comprises following steps to discharge described transmission channel:
(4a) described transmission base station sends to described reception base station and requires to discharge chain circuit message;
(4b) described reception base station is receiving after above-mentioned requirements discharges chain circuit message, discharges the link circuit resource relevant with described transmission channel and to the described transmission base station transmission link release message that finishes; And
(4c) described transmission base station discharges its link circuit resource relevant with transmission channel to finish the release of described transmission channel receiving after above-mentioned link discharges the message that finishes.
4. as the communication means between base station in any described wireless communication system among the claim 1-3, it is characterized in that, described Frame is successively through InUB Frame Protocol, User Datagram Protoco (UDP), Internet protocol, layer 2 protocol and layer 1 protocol encapsulation, wherein, to constitute the IuNB frame protocol, described control information comprises the data type sign of identification data type by the affix control information in user face data process IuNB Frame Protocol encapsulation back.
5. the communication means in the wireless communication system as claimed in claim 4 between the base station is characterized in that described data type is masked as channel type and the channel designator of user face data when multichannel transmits.
6. the communication means in the wireless communication system as claimed in claim 5 between the base station is characterized in that described IuNB frame protocol has following structure:
Wherein, the FP sequence number is the sequence number of each IuNB frame protocol; channel type and channel designator are respectively channel type and the channel number of user face data when multichannel transmits; transmission block is the user face data of upper-layer protocol encapsulation; the transmission block sequence number is the sequence number of transmission block in current channel; the transformat of transformat indication expression transmission block; protection mechanism is used to provide to the transmission Data Protection, and filling information is used for being packed into the filler of right quantity within it to keep the byte-aligned of IuNB frame protocol structure.
7. the communication means in the wireless communication system as claimed in claim 5 between the base station is characterized in that described IuNB frame protocol has following structure:
Wherein, the FP sequence number is the sequence number of each IuNB frame protocol; channel designator is user face data has the same channel type when multichannel transmits the numbering of channel in this channel type; transmission block is the user face data of upper-layer protocol encapsulation; the transmission block sequence number is the sequence number of transmission block in current channel; the transformat of transformat indication expression transmission block; protection mechanism is used to provide to the transmission Data Protection, and filling information is used for being packed into the filler of right quantity within it to keep the byte-aligned of IuNB frame protocol structure.
8. as the communication means between the base station in claim 6 or the 7 described wireless communication systems, it is characterized in that described protection mechanism territory is the cyclic redundancy check (CRC) code of user face data in the IuNB frame protocol.
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| CN 02112284 CN1214662C (en) | 2002-06-28 | 2002-06-28 | Communication method between base station of radio communication system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100477639C (en) * | 2005-11-30 | 2009-04-08 | 中国科学院计算技术研究所 | Method for processing wireless network node buffering data package |
| CN101420752B (en) * | 2007-10-23 | 2011-01-19 | 中兴通讯股份有限公司 | Channel multiplexing method |
| CN103269319A (en) * | 2013-04-27 | 2013-08-28 | 北京创毅讯联科技股份有限公司 | Method, device and system for data transmission |
| CN103517332A (en) * | 2012-06-18 | 2014-01-15 | 中国联合网络通信集团有限公司 | Base station, data processing method and communication system |
| CN103702363A (en) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | Method for compressing signals from frequencies and downlink signal compressing system |
| WO2017124432A1 (en) * | 2016-01-22 | 2017-07-27 | 深圳市大疆创新科技有限公司 | Signal line multiplexing processing method, unmanned aircraft, electronic governor and mcus thereof |
| CN104617992B (en) * | 2009-06-15 | 2018-05-01 | 富士通株式会社 | Wireless communication system, base station apparatus, terminal installation and wireless communications method |
| WO2021097858A1 (en) * | 2019-11-22 | 2021-05-27 | 华为技术有限公司 | Communication method and apparatus |
-
2002
- 2002-06-28 CN CN 02112284 patent/CN1214662C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100477639C (en) * | 2005-11-30 | 2009-04-08 | 中国科学院计算技术研究所 | Method for processing wireless network node buffering data package |
| CN101420752B (en) * | 2007-10-23 | 2011-01-19 | 中兴通讯股份有限公司 | Channel multiplexing method |
| CN104617992B (en) * | 2009-06-15 | 2018-05-01 | 富士通株式会社 | Wireless communication system, base station apparatus, terminal installation and wireless communications method |
| CN103517332A (en) * | 2012-06-18 | 2014-01-15 | 中国联合网络通信集团有限公司 | Base station, data processing method and communication system |
| CN103517332B (en) * | 2012-06-18 | 2016-08-24 | 中国联合网络通信集团有限公司 | A kind of base station, data processing method and communication system |
| CN103702363A (en) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | Method for compressing signals from frequencies and downlink signal compressing system |
| CN103702363B (en) * | 2012-09-27 | 2017-02-08 | 上海贝尔股份有限公司 | Method for compressing signals from frequencies and downlink signal compressing system |
| CN103269319A (en) * | 2013-04-27 | 2013-08-28 | 北京创毅讯联科技股份有限公司 | Method, device and system for data transmission |
| WO2017124432A1 (en) * | 2016-01-22 | 2017-07-27 | 深圳市大疆创新科技有限公司 | Signal line multiplexing processing method, unmanned aircraft, electronic governor and mcus thereof |
| CN107074356A (en) * | 2016-01-22 | 2017-08-18 | 深圳市大疆创新科技有限公司 | Signal wire multiplexing process method, unmanned vehicle, electron speed regulator and its MCU |
| CN107074356B (en) * | 2016-01-22 | 2019-09-10 | 深圳市大疆创新科技有限公司 | Signal wire multiplexing process method, unmanned vehicle, electron speed regulator and its MCU |
| WO2021097858A1 (en) * | 2019-11-22 | 2021-05-27 | 华为技术有限公司 | Communication method and apparatus |
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