CN101365188A - Method for information transmission between baseband digital processing unit and radio frequency unit - Google Patents
Method for information transmission between baseband digital processing unit and radio frequency unit Download PDFInfo
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Abstract
The invention provides a method for transferring information between a baseband digital processing unit and a radiofrequency unit. The method comprises the following steps: step 1: transferring the information between the baseband digital processing unit and the radiofrequency unit, wherein the information includes an information describing part containing the information type, the information length and the information content field; the information content field is composed of a plurality of information units, and each unit adopts the Type-Length-Value form to describe; the Type represents the concrete information type carried by the information unit; the Length represents the information content length carried by the information unit; and the Value represents the concrete content carried by the information unit. And Step 2: the baseband digital processing unit or the radiofrequency unit analyzes the received information and analyzes the information according to the information type field and information length field. By adopting the method, better compatibility can be ensured between the new and the old radiofrequency units and the baseband digital processing unit.
Description
Technical field
The present invention relates to the method for message communicating between two equipment of communication field, relate in particular to the method that information is transmitted between base-band digital processing unit and the radio frequency unit.
Background technology
The structure of typical cellular communication system as shown in Figure 1, subscriber equipment (UE) communicates in propagation of eating dishes without rice or wine and system side equipment by wireless signal.System side equipment comprises base station (Node B), radio network controller (RNC) and equipment of the core network (CN).Wherein RNC and Node B form RNS (RNS).And Node B can be divided into base-band digital processing unit (BBU, Base Band Unit) and RF processing unit (RRU, Radio Remote Unit) according to function.And in the design of base station of new generation, the design that Node B adopts base-band digital processing unit and RF processing unit to be separated more and more adopts optical fiber or cable to communicate between the two.As the common public radio interface (CPRI) of CPRI tissue definition and the RP3 interface of OBSAI tissue definition, all embodied the situation that the base station is divided into base-band digital processing capacity and radio-frequency enabled part.
Adopt relevant with realization, inner private information field (as built-in function unit marks, process identification (PID) or module id etc.) to realize application message addressing and distribution between now a lot of BBU and the RRU equipment, the general degree that BBU communicates by letter with RRU is low, and the compatible difficulty of multi-vendor equipment is big.And the communication between now a lot of BBU and the RRU equipment adopts fixed structure message to communicate, if message structure is owing to new function increase need be changed, then two modules or equipment all will be upgraded and just can be finished message intercommunication, and the message communicating compatibility between the new used equipment is bad.
Patent application WO2005034544 (the open date: on April 14th, 2005) disclose physical layer and the link layer communications mode of using between a kind of BBU and the RRU.What adopt between the BBU of this technical scheme and the RRU is that as shown in Figure 2 communication protocol is with reference to mode.Yet, this technical scheme has all only embodied the mode that physical layer between BBU and the RRU and link layer information transmit, and does not describe control informations such as application layer message such as configuration management, performance management, alarm management, condition managing, diagnostic test and how to transmit between BBU and RRU.
How application layer as shown in Figure 2 being carried out message communicating between the base-band digital processing unit of separate type design and RF processing unit, is the problem that needs solve.
Summary of the invention
The invention provides the method that information is transmitted between a kind of base-band digital processing unit and the radio frequency unit.
Method according to information transmission between base-band digital processing unit of the present invention and the radio frequency unit, may further comprise the steps: step 1: pass-along message between base-band digital processing unit and the radio frequency unit, this message comprises having the message type information field, the message semantic definition part of message-length information field and message content field, described message content field is made up of a plurality of information units, each information unit adopts the form of Type-Length-Value to be described, wherein Type represents the concrete information type of information unit carrying, Length represents information unit loaded information content-length, and Value represents the specifying information content of information unit carrying; Step 2: base-band digital processing unit or radio frequency unit are resolved the described message of receiving, according to described message type information field and message-length information field described message are handled.
Wherein, described Type adopts unified information unit encoded radio to indicate.
Wherein, described processing comprises: when (1) had increased new information unit when described message, for new information unit, old base-band digital processing unit or radio frequency unit were when carrying out message parse, run into unacquainted information unit, can directly skip this information unit.(2) when having increased new field, the Value back of information unit becomes new information unit, when the field of front remains unchanged, old base-band digital processing unit or radio frequency unit are when resolving, the field that can extract need according to old structure utilizes Length in the information unit to skip remainder in this information unit simultaneously.
Wherein, described message also comprises the transaction information part, described transaction information partly comprises affairs sequence number field and transaction types field, the affairs sequence number field is used for realizing the coupling of affairs relation, this field changed after each new affairs produced, and the transaction types field realizes request, replys and indicate type with the affairs sequence number field.
Wherein, described message also comprises equipment addressing information part, and described equipment addressing information partly comprises the information field of base-band digital processing unit device type information field, base-band digital processing unit device instance, the information field of RF unit equipment type and the information field of RF unit equipment example.
Wherein, described message type field is signable to go out concrete type of message, this message type information field is divided into configuration class message, diagnostics classes message, performance statistics class message, state class message, alarm class message according to the application function territory, and described message-length information field is used for indicating the total length of each entrained information unit.
Wherein, both can to have belonged to same category information unit also can be to belong to the different kinds of information unit to described information unit.
Wherein, the step of pass-along message comprises between described base-band digital processing unit and the radio frequency unit:
(a) the base-band digital processing unit is according to the device type of the device type of the radio frequency unit that will communicate by letter and device identification, base-band digital processing unit and device identification and the parameter type that will transmit, and structure comprises the request message of affairs sequence number;
(b) the base-band digital processing unit sends to corresponding radio frequency unit according to the device type and the device identification of radio frequency unit with this request message;
(c) request message that sends over according to RF unit equipment type, RF unit equipment example message pick-up base-band digital processing unit of radio frequency unit;
(d) radio frequency unit is analyzed this request message and is handled this message with configuration corresponding apparatus unit;
(e) radio frequency unit is given the base-band digital processing unit according to equipment implementation status tectonic response information and sending.
Wherein, information in the device type of the device type of the radio frequency unit of described response message and device identification, base-band digital processing unit and device identification and the above-mentioned request message is consistent, and the affairs sequence number of described response message and the affairs sequence number in the above-mentioned solicited message are consistent.
Wherein, described base-band digital processing unit carries out subsequent treatment according to the response message of radio frequency unit, and the base-band digital processing unit also can be retransmitted described request message under the situation of radio frequency unit response timeout.
By the present invention, have compatible preferably between new and old radio frequency unit and the base-band digital processing unit.
Description of drawings
Fig. 1 is the structure chart of third generation cellular communication system.
Fig. 2 is the Protocol REference Model between the BBU-RRU.
Fig. 3 is the various information examples of carrying in the defined message of the present invention.
Fig. 4 is that the defined message of the present invention is at an instantiation that carries out between BBU and the RRU using in frequency configuration and the IQ configuration.
Embodiment
The purpose that CPRI tissue/OBSAI tissue proposes various communication interfaces between BBU and the RRU is exactly in order to reduce the coupling between each functional unit of base station, realize the BBU and the compatibility between the RRU equipment and integrated of each producer, BBU that the present invention proposes and a kind of application layer messages transfer mode between the RRU can reduce the coupling between BBU and the RRU.With reference to figure 2, the specific embodiment of the invention provides a kind of method that application message transmits between BBU and the RRU.For realizing the message transmission on the control maintenance application plane between BBU and the RRU, the message of the specific embodiment of the invention comprises three parts, equipment addressing information part, transaction information part and message semantic definition part.
With reference to figure 3, the equipment addressing information partly comprises the information field of BBU device type information field, BBU device instance, the information field of RRU device type and the information field of RRU device instance.Wherein BBU device type information field is used for indicating the manufacturer's information of BBU equipment or the seriation BBU device type of same manufacturer, can discern vendor equipment under the interconnected situation of multi-vendor equipment; The information field of BBU device instance is used for indicating a certain concrete BBU equipment of current connection; The information field of RRU device type is used for indicating the manufacturer's information of RRU equipment or the seriation RRU device type of same manufacturer, can discern vendor equipment under the interconnected situation of multi-vendor equipment; The information field of RRU device instance is used for indicating a certain concrete RRU equipment of current connection.
Transaction information partly comprises affairs sequence number field and transaction types field.The application message transmission generally comprises request/response mode (Request/Response) or indication (Indication) mode between BBU and the RRU, each request/response message is to regarding affairs as, an independent Indication message is also regarded affairs as, the affairs sequence number field is used for realizing the coupling of this affairs relation, this field changed after each new affairs produced, as adding 1 operation, this transaction field can be used to distinguish each affairs.The transaction types field with the affairs sequence number field realize asking/reply and type such as indication.
Message semantic definition partly comprises message type information field, message-length information field and message content field.Wherein message type field is signable goes out concrete type of message, being convenient to BBU and RRU deals with separately according to corresponding information type, the message type information field can be divided according to application function, as configuration class message, diagnostics classes message, performance statistics class message, state class message, alarm class message etc.The message-length information field is used for indicating the total length of each entrained information unit, is convenient to communicating pair and carries out message parse.The message content field is made up of a plurality of information units, each information unit adopts the form of Type-Length-Value to be described, wherein Type represents the concrete information type of information unit carrying, Length represents information unit loaded information content-length, and Value represents the specifying information content of information unit carrying.Type is used for distinguishing in the type of message type of information entity more specifically, as antenna configuration information type in the configuration messages type or carrier configuration information type, Length is at the content-length of single information unit, and Value is the particular content of single information unit.
The Type of information unit adopts unified information unit encoded radio to indicate, and to reduce the complexity of information unit type encoding and decoding, improves the treatment effeciency of BBU and RRU.
Can encapsulate the information unit of a plurality of Type-Length-Value forms in the same message, it also can be to belong to the different kinds of information unit that these information units both can belong to same category information unit.
The built-up sequence of the said equipment addressing information part, transaction information part and message semantic definition part does not require, and wherein the message semantic definition part also can be used separately.
Communication information can be realized in new-old system between BBU and the RRU, and the communication information function expansibility can be realized by dual mode:
(1) described message has increased new information unit, and for new information unit, new system resolves when carrying out message parse smoothly, and unacquainted information unit is run into by old system when carrying out message parse, can directly skip this information unit, realizes forward compatibility.
(2) increase new field in the Value back of information unit and become new information unit, the field of front was with information unit was consistent in the past, new system resolves when carrying out Message Processing smoothly, during old system analysis, the field that can extract need according to old structure utilizes length field in the information unit to skip remainder in this information unit simultaneously.
With reference to shown in Figure 4, handle the application mode that example illustrates the specific embodiment of the invention by parameter-configuring request between BBU and the RRU and response message.RRU start finish after, BBU will be configured relevant parameters such as the frequency of each carrier frequency unit of RRU and IQ data, the parameter-configuring request message processing step comprises:
Step 101:BBU is according to the RRU device type that will communicate by letter and device identification, BBU device type and device identification and the parameter type that will transmit, the constructing variable configuration request message, and parameter-configuring request message comprises:
The BBU device type can be set to BBU model A; The BBU device instance can be set to 10 according to network planning.
The RRU device type can be set to RRU model B; The RRU device instance can be set to 5 according to network planning.
Transaction types is set to request type, and the affairs sequence number can add an acquisition on last affairs sequence number once, also can be according to the present clock setting.
Type of message can be set to parameter-configuring request class message; Message-length is provided with according to the parameter configuration message of reality.
The information unit that carries comprises frequency configuration information unit and IQ data configuration information unit.
Frequency configuration information cell type (Type) can be filled out the X1 into unified planning, and length (length) is set to frequency configuration parameter content-length, the frequency of concrete content such as carrier frequency unit number, configuration etc.For a plurality of carrier frequency unit, this message can comprise a plurality of frequency configuration informations unit.
IQ data configuration information unit type (Type) can be filled out the X2 into unified planning, and length (length) is set to IQ configuration parameter content-length, concrete content such as carrier frequency unit number, day wire size, carrier wave antenna IQ position number etc.
Step 102:BBU sends to corresponding RRU according to RRU device type and device identification with this parameter-configuring request message;
The message that step 103:RRU sends over according to message pick-up BBU equipment such as BBU device type, BBU device instance, RRU device type, RRU device instance;
Step 104:RRU analyzes it and is parameter configuration message, and handle this message by RRU according to type of message and message-length;
Step 105:RRU resolving information cell type, information unit length and the information content are taken out frequency configuration information and IQ data configuration information, configuration corresponding apparatus unit.
Parameter configuration response message step comprises:
Step 201:RRU is according to equipment implementation status constructing variable configuration response message, and the parameter configuration response message comprises:
Information in BBU device type in the parameter configuration response message, BBU device instance, RRU device type, RRU device instance and this subparameter configuring request is consistent.
Transaction types in the parameter configuration response message is set to response, and the affairs sequence number in affairs sequence number and this subparameter configuration request message is consistent.
Type of message can be set to parameter configuration response class message; Message-length is provided with according to the parameter configuration response message of reality.
The information unit that carries in the parameter configuration response message comprises frequency configuration response information unit and IQ data configuration response message unit.
Frequency configuration response information unit type (Type) can be filled out the Y1 into unified planning, and length (length) is set to the content-length of frequency configuration response, concrete content such as frequency configuration successful, failure etc.For a plurality of frequency configuring request, this message can comprise a plurality of frequency configuration response information units.
IQ data configuration response message cell type (Type) can be filled out the Y2 into unified planning, and length (length) is set to the content-length of IQ configuration response, concrete content such as IQ configuration successful, failure etc.
Step 202:RRU sends to corresponding BBU equipment with the parameter configuration response message.
BBU equipment carries out subsequent treatment according to the parameter configuration response message of RRU, and BBU also can retransmit parameter-configuring request message under the situation of RRU response timeout.Use transaction types and affairs sequence number in the message communicating between BBU and RRU, guarantee that BBU and RRU communicate when handling, can make a distinction by sequence number is very clear between a plurality of affairs, be convenient to message retransmission processing, message repetition and other abnormality processing.
In the specific embodiment of the invention between BBU and the RRU message distribution only finish (BBU device type/BBU device instance/RRU device type/RRU device instance/type of message/message-length) by several general information fields, be not subject to the particular type of BBU equipment and RRU equipment.
Claims (10)
1. the method that information is transmitted between base-band digital processing unit and the radio frequency unit is characterized in that, comprises:
Step 1: pass-along message between base-band digital processing unit and the radio frequency unit, this message comprise have the message type information field, the message semantic definition part of message-length information field and message content field, described message content field is made up of a plurality of information units, each information unit adopts the form of Type-Length-Value to be described, wherein Type represents the concrete information type of information unit carrying, Length represents information unit loaded information content-length, and Value represents the specifying information content of information unit carrying;
Step 2: base-band digital processing unit or radio frequency unit are resolved the described message of receiving, according to described message type information field and message-length information field described message are handled.
2. the method for claim 1 is characterized in that, described Type adopts unified information unit encoded radio to indicate.
3. claim 1 or 2 described methods is characterized in that described processing comprises:
(1) when described message has increased new information unit, for new information unit, old base-band digital processing unit or radio frequency unit are run into unacquainted information unit when carrying out message parse, can directly skip this information unit.
(2) when having increased new field, the Value back of information unit becomes new information unit, when the field of front remains unchanged, old base-band digital processing unit or radio frequency unit are when resolving, the field that can extract need according to old structure utilizes Length in the information unit to skip remainder in this information unit simultaneously.
4. method as claimed in claim 1 or 2, it is characterized in that, described message also comprises the transaction information part, described transaction information partly comprises affairs sequence number field and transaction types field, the affairs sequence number field is used for realizing the coupling of affairs relation, this field changed after each new affairs produced, and the transaction types field realizes request, replys and indicate type with the affairs sequence number field.
5. method as claimed in claim 1 or 2, it is characterized in that, described message also comprises equipment addressing information part, and described equipment addressing information partly comprises the information field of base-band digital processing unit device type information field, base-band digital processing unit device instance, the information field of RF unit equipment type and the information field of RF unit equipment example.
6. method as claimed in claim 1 or 2, it is characterized in that, described message type field is signable to go out concrete type of message, this message type information field is divided into configuration class message, diagnostics classes message, performance statistics class message, state class message, alarm class message according to application function, and described message-length information field is used for indicating the total length of each entrained information unit.
7. method as claimed in claim 1 or 2 is characterized in that, it also can be to belong to the different kinds of information unit that described information unit both can belong to same category information unit.
8. method as claimed in claim 1 or 2 is characterized in that, the step of pass-along message comprises between described base-band digital processing unit and the radio frequency unit:
(a) the base-band digital processing unit is according to the device type of the device type of the radio frequency unit that will communicate by letter and device identification, base-band digital processing unit and device identification and the parameter type that will transmit, and structure comprises the request message of affairs sequence number;
(b) the base-band digital processing unit sends to corresponding radio frequency unit according to the device type and the device identification of radio frequency unit with this request message;
(c) request message that sends over according to RF unit equipment type, RF unit equipment example message pick-up base-band digital processing unit of radio frequency unit;
(d) radio frequency unit is analyzed this request message and is handled this message with configuration corresponding apparatus unit;
(e) radio frequency unit is given the base-band digital processing unit according to equipment implementation status tectonic response information and sending.
9. method as claimed in claim 8, it is characterized in that, information in the device type of the device type of the radio frequency unit of described response message and device identification, base-band digital processing unit and device identification and the above-mentioned request message is consistent, and the affairs sequence number of described response message and the affairs sequence number in the above-mentioned solicited message are consistent.
10. method as claimed in claim 9 is characterized in that, described base-band digital processing unit carries out subsequent treatment according to the response message of radio frequency unit, and the base-band digital processing unit also can be retransmitted described request message under the situation of radio frequency unit response timeout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710141574 CN101365188B (en) | 2007-08-07 | 2007-08-07 | Method for information transmission between baseband digital processing unit and radio frequency unit |
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| CN 200710141574 CN101365188B (en) | 2007-08-07 | 2007-08-07 | Method for information transmission between baseband digital processing unit and radio frequency unit |
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| CN101365188B CN101365188B (en) | 2012-12-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686870A (en) * | 2012-09-20 | 2014-03-26 | 京信通信系统（中国）有限公司 | Carrier attribute value processing method and device |
| CN105575085A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | Information output method, diagnostic method, diagnostic device and sealing module |
| WO2016082168A1 (en) * | 2014-11-28 | 2016-06-02 | 华为技术有限公司 | Information transmitting method, radio equipment controller, radio equipment and base station |
| CN110719238A (en) * | 2018-07-13 | 2020-01-21 | 华为技术有限公司 | Data transmission control method and device and access network equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7366176B1 (en) * | 2002-06-11 | 2008-04-29 | Cisco Technology, Inc. | Method to provide effective connection grooming in PNNI |
| SE0302596D0 (en) * | 2003-09-30 | 2003-09-30 | Ericsson Telefon Ab L M | Improvements in or relating to base stations |
| CN100426897C (en) * | 2005-01-12 | 2008-10-15 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| CN100372265C (en) * | 2006-03-28 | 2008-02-27 | 华为技术有限公司 | Indoor distribution system and its netting method |
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2007
- 2007-08-07 CN CN 200710141574 patent/CN101365188B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686870A (en) * | 2012-09-20 | 2014-03-26 | 京信通信系统（中国）有限公司 | Carrier attribute value processing method and device |
| CN103686870B (en) * | 2012-09-20 | 2016-08-10 | 京信通信系统（中国）有限公司 | The treating method and apparatus of carrier attribute value |
| CN105575085A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | Information output method, diagnostic method, diagnostic device and sealing module |
| WO2016082168A1 (en) * | 2014-11-28 | 2016-06-02 | 华为技术有限公司 | Information transmitting method, radio equipment controller, radio equipment and base station |
| CN105874840A (en) * | 2014-11-28 | 2016-08-17 | 华为技术有限公司 | Information transmitting method, radio equipment controller, radio equipment and base station |
| KR20170091654A (en) * | 2014-11-28 | 2017-08-09 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Information transmitting method, radio equipment controller, radio equipment and base station |
| KR101896562B1 (en) | 2014-11-28 | 2018-09-07 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Information transmission method, radio equipment controller, radio equipment, and base station |
| US10419081B2 (en) | 2014-11-28 | 2019-09-17 | Huawei Technologies Co., Ltd. | Information transmission method, radio equipment controller, radio equipment, and base station |
| CN110719238A (en) * | 2018-07-13 | 2020-01-21 | 华为技术有限公司 | Data transmission control method and device and access network equipment |
| US11889486B2 (en) | 2018-07-13 | 2024-01-30 | Huawei Technologies Co., Ltd. | Data transmission control method, apparatus, and access network device |
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| CN101365188B (en) | 2012-12-05 |
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