CN101998675B

CN101998675B - Radio equipment access method and device and communication system

Info

Publication number: CN101998675B
Application number: CN 200910165657
Authority: CN
Inventors: 叶飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2013-10-09
Anticipated expiration: 2029-08-14
Also published as: CN101998675A

Abstract

The embodiment of the invention discloses a radio equipment access method, a radio equipment access device and a communication system. Radio equipment (RE) with an adjustable optical module is adopted; when the RE with the adjustable optical module accesses an optical distribution network (ODN), master port equipment selects a transmission rate, sends common public radio interface (CPRI) downlinkframes at the selected transmission rate and receives CPRI uplink frames carrying identifier information of slave port equipment at a rate same as the transmission rate; if the CPRI uplink frames at the rate same as the transmission rate are received in the preset time, a wavelength assignment table of the master port equipment is updated according to the identifier information of the slave port equipment; and the master port equipment informs the slave port equipment of a wavelength assignment result according to the wavelength assignment table so as to complete the access of the RE. The scheme can reduce the cost of storage and operation and maintenance.

Description

Wireless device cut-in method, device and communication system

Technical field

The present invention relates to communication technical field, be specifically related to wireless device cut-in method, device and communication system.

Background technology

Common public radio interface (CPRI, Common Public Radio Interface) be radio equipment controller (REC in the wireless base station device, Radio Equipment Controller) and the interface standard between the wireless device (RE, Radio Equipment).The link of CPRI (link) refers to the two-way link between direct-connected REC and RE or two the RE nodes.The CPRI link of operating state comprises main (Master) port, two-way link and from (Slave) port.From the master port of CPRI link to being down direction from port direction; Is up direction from the CPRI link from port to the master port direction.

What REC and RE adopted is point-to-point communication.During present CPRI used, REC and RE generally used the optical module of fixed wave length and two fine, i.e. optical fiber of each direction, and only transmit the light signal of a fixed wave length (850nm or 1310nm or 1550nm) in optical fiber.

In existing Access Network, except realizing internet (Internet) online, phone, cable TV, also to realize radio communication, mobile communication etc.If every kind of business is all laid the optical fiber of oneself, it then is the significant wastage to resource.For saving fiber resource, industry has proposed by existing passive optical-fiber network (PON, Passive Optical Network) optical distribution network (ODN, Optical Distribution Network) demand of transmission CPRI link data, can pass through wavelength division multiplexing (WDM, Wavelength DivisionMultiplexing) mode several CPRI links that superpose in the ODN network, wherein, each CPRI link uses a pair of wavelength to be respectively applied to uplink downlink.In the prior art, the optical module of REC and RE all needs to be equipped with the optical module with specific transmitting-receiving wavelength, and namely the optical module of fixed wave length can make RE normally be linked in the system.But, adopt the scheme of the optical module of fixed wave length can cause storing in a warehouse higher with the cost of O﹠M.

Summary of the invention

The embodiment of the invention provides a kind of wireless device cut-in method, device and communication system, can reduce the cost of storage and O﹠M.

A kind of wireless device cut-in method comprises:

By selected transmission rate from master port equipment to sending the common public radio interface CPRI downlink frame from port device;

Receive the CPRI uplink frame that sends from port device with the described selected identical speed of transmission rate, carry described identification information from port device in the described CPRI uplink frame;

If in Preset Time, receive the CPRI uplink frame with this transmission rate phase same rate, then according to the Wavelength Assignment table of described update of identification information master port equipment from port device, then according to the Wavelength Assignment table with the Wavelength Assignment result notification from port device.

A kind of wireless device cut-in method comprises:

Configuration is from the reception wavelength of port device;

Receive the CPRI downlink frame by a selected transmission rate, carry upgoing wave long message, downstream wavelength information and wavelength in the described CPRI downlink frame and use state information;

If in Preset Time, receive the CPRI downlink frame with this transmission rate phase same rate, judge then whether the up wavelength and the downstream wavelength that receive upgoing wave long message and downstream wavelength information correspondence are assigned with;

When described up wavelength and downstream wavelength are not assigned with, according to the described upgoing wave long message configuration emission wavelength that receives, and send and to carry from the CPRI uplink frame of the identification information of port device, with its inner Wavelength Assignment table of notice master port renewal of the equipment.

A kind of master port equipment comprises master port transmitter, master port receiver and processing unit;

The master port transmitter be used for to be selected a transmission rate, and with described transmission rate to sending the CPRI downlink frame from port device;

The master port receiver, the transmission rate that is used for selecting with the master port transmitter receives the CPRI uplink frame that sends from port device, carries described identification information from port device in the described CPRI uplink frame;

Processing unit, be used for when the master port receiver receives CPRI uplink frame with this transmission rate phase same rate in Preset Time, according to the Wavelength Assignment table of described update of identification information self from port device, according to the Wavelength Assignment table that the Wavelength Assignment result notification is described from port device then.

A kind of from port device, comprise the wavelength configuration unit, from end receiver and processing unit;

The wavelength configuration unit is used for configuration from the operation wavelength of end receiver;

From end receiver, be used for selecting a transmission rate, and receive the CPRI downlink frame with the transmission rate of this selection, carry upgoing wave long message, downstream wavelength information and wavelength in the described CPRI downlink frame and use state information;

Processing unit, be used for when the CPRI downlink frame that receives in Preset Time from end receiver with this transmission rate phase same rate, and when the wavelength of the upgoing wave long message of determining to receive and downstream wavelength information correspondence is not assigned with, according to the operation wavelength of the upgoing wave long message configuration that receives from the port transmitter, and notice sends the CPRI uplink frame carry from the port device identification information from the port transmitter, with its inner Wavelength Assignment table of notice master port renewal of the equipment.

A kind of communication system comprises master port equipment and from port device;

Described master port equipment, be used for carrying the upgoing wave long message by selected first transmission rate transmission, downstream wavelength information and wavelength use the CPRI downlink frame of state information to give from port device, receive from carrying from the CPRI uplink frame of the identification information of port device that port device sends with described first transmission rate, and when the CPRI uplink frame that in first Preset Time, receives with this first transmission rate phase same rate, according to the Wavelength Assignment table of described update of identification information self from port device, according to the Wavelength Assignment table that the Wavelength Assignment result notification is described from port device then;

Described from port device, be used for selecting second transmission rate, and with described transmission rate reception master port equipment transmission CPRI downlink frame, and when the CPRI downlink frame that in second Preset Time, receives with this second transmission rate phase same rate, dispose its emission wavelength and send the CPRI uplink frame of carrying from the identification information of port device to master port equipment according to the described upgoing wave long message that receives.

The embodiment of the invention has adopted the tunable optical module in RE, then when this RE with tunable optical module inserts the 0DN network, select a transmission rate by master port equipment, transmission rate with this selection sends the CPRI downlink frame on the one hand, receive the CPRI uplink frame with the identical speed of described transmission rate on the other hand, wherein, carry the identification information from port device in the CPRI uplink frame, if in Preset Time, receive the CPRI uplink frame with this transmission rate phase same rate, then basis is from the Wavelength Assignment table of the update of identification information master port equipment of port device, then according to the Wavelength Assignment table with the Wavelength Assignment result notification from port device, to finish the access of wireless device.Because the RE in this scheme has adopted the tunable optical module, thus do not need for each wavelength all provides an optical module, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the method flow diagram of the RE cut-in method that provides of the invention process one;

Fig. 2 is the method flow diagram of the RE cut-in method that provides of the invention process two;

System's scene schematic diagram when Fig. 3 is the Wavelength Assignment module as module of REC;

System's scene schematic diagram when Fig. 4 is the Wavelength Assignment module as the equipment that is independent of REC;

Another system's scene schematic diagram when Fig. 5 is the Wavelength Assignment module as the equipment that is independent of REC;

Fig. 6 is the method flow diagram of the RE cut-in method that provides of the invention process two;

Fig. 7 is the method flow diagram of the RE cut-in method that provides of the invention process two;

Fig. 8 sets up the scene schematic diagram that the CPRI link carries out the wave division multiplex mode transmission between REC and the RE;

Fig. 9 sets up the scene schematic diagram that the CPRI link carries out the wave division multiplex mode transmission between RE and the RE;

Figure 10 is the structural representation of the master port equipment that provides of the embodiment of the invention;

Figure 11 is the structural representation from port device that the embodiment of the invention provides;

Figure 12 is the structural representation of the communication equipment that provides of the embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

The embodiment of the invention provides a kind of wireless device cut-in method, device and communication system.Below be elaborated respectively.

Embodiment one,

This example will be described from the angle of master port equipment.This master port equipment is specifically as follows RE, also can be REC.Optical module in the master port equipment can be the optical module of fixed wave length, also can be the tunable optical module, comprises master port transmitter and master port receiver in the optical module.

The wireless device cut-in method that present embodiment provides can comprise: select a transmission rate, and send the CPRI downlink frame with the transmission rate of this selection by the master port transmitter; With identical speed, namely receive the CPRI uplink frame with this transmission rate by the master port receiver, wherein, carry the identification information from port device in the CPRI uplink frame; If in preset time T 1, receive correct CPRI uplink frame, namely with the CPRI uplink frame of this transmission rate phase same rate, according to the Wavelength Assignment table from the update of identification information self of port device in the CPRI uplink frame that receives, according to the Wavelength Assignment table that the Wavelength Assignment result notification is described from port device then, to finish the access of the RE with tunable optical module.

Particularly, see also Fig. 1, the idiographic flow of the wireless device cut-in method that present embodiment provides can comprise:

101, select a transmission rate, and send the CPRI downlink frame with the transmission rate of this selection by the master port transmitter;

It should be noted that, can carry upgoing wave long message, downstream wavelength information and wavelength in this CPRI downlink frame and use state information.Described upgoing wave long message, downstream wavelength information and wavelength use state information to determine according to pre-configured Wavelength Assignment table.Wherein,

Described downstream wavelength information is corresponding to the operation wavelength (being also referred to as the emission wavelength of master port equipment) of master port transmitter and from the operation wavelength (being also referred to as the reception wavelength from port device) of end receiver;

Described upgoing wave long message is corresponding to the operation wavelength (being also referred to as the reception wavelength of master port equipment) of master port receiver and from the operation wavelength (being also referred to as the emission wavelength from port device) of port transmitter;

Described wavelength uses state information to refer to the use state information of up wavelength and downstream wavelength, and (a up wavelength always has its corresponding downstream wavelength, namely, up wavelength and downstream wavelength always exist in pairs, general, can be called as corresponding up wavelength and downstream wavelength a pair of wavelength or wavelength to), this wavelength uses the initial value of state information can be set to unallocated state.

In addition, before step 101, if master port equipment is REC, and what should use as the REC of master port equipment is the tunable optical module, then can be the up wavelength of tunable optical module assignment and downstream wavelength earlier for this optical module distributes a pair of untapped wavelength, dispose the operation wavelength of master port transmitter then according to the downstream wavelength of distributing, and according to the operation wavelength of the up wavelength configuration master port receiver that distributes, and upgrade the Wavelength Assignment table.If use the optical module (being nonadjustable optical module) of fixed wave length as the REC of master port equipment, then this step can be skipped.

102, receive the CPRI uplink frame with the speed identical with this transmission rate by the master port receiver, if receive correct CPRI uplink frame in preset time T 1, then execution in step 103; If do not receive correct CPRI uplink frame in the time at T1, then execution in step 104.

Wherein, described correct CPRI uplink frame refers to the CPRI uplink frame with this transmission rate phase same rate; Described preset time T 1 can be rule of thumb or standard code determine, such as, 0.9～1.1s need adjust according to the wavelength regulation time.It should be noted that, can carry the identification information from port device in the CPRI uplink frame, such as the sequence number from port device.If described is RE from port device, described CPRI uplink frame portability RE sequence number (SN, Serial Number) then; Certainly, if be REC from port device, then can carry in the CPRI uplink frame this moment sequence number or the REC of REC sign (ID, Identity).This RE sequence number (RE-SN) is used for sign RE, and REC sequence number or REC-ID are used for sign REC.

In the specific implementation, can be by in the CPRI uplink frame, keeping the sequence number that (reserved) field is carried RE or REC, this reserved field need be pre-defined in the CPRI agreement, certainly, also can carry by increase new field in the CPRI uplink frame.

103, can determine earlier at this up wavelength inserts whether conflict is arranged, such as, detected by the uplink optical signal of REC as master port equipment, if detect the uplink optical signal conflict, as detect dropout (LOS, Loss of Signal) signal, then showing has two or more RE to apply for that this wavelength is to (being up wavelength and the downstream wavelength of distributing in the step 101), the synchronous regime that need turn back to the starting state machine is restarted rate consulation, namely re-executes step 101; Otherwise, represent that then up wavelength inserts not conflict.

Insert not conflict if determine up wavelength, then according to the identification information from port device in the CPRI uplink frame that receives, Wavelength Assignment table such as RE sequence number update self, then according to the Wavelength Assignment table with Wavelength Assignment result notification RE, the synchronization negotiation that can carry on an agreement subsequently operation is to finish the access of the RE with tunable optical module.

For example, RE sequence number in the CPRI uplink frame that receives is write field corresponding with up wavelength and downstream wavelength in the Wavelength Assignment table, and described up wavelength and the corresponding wavelength use of downstream wavelength state are set to distribution state, and then, according to this Wavelength Assignment table configuration CPRI downlink frame, namely in the CPRI downlink frame, carry upgoing wave long message and downstream wavelength information, and the wavelength that upgrades in the CPRI downlink frame uses state information, then this CPRI downlink frame is sent to RE, enter next step state then, the synchronization negotiation that namely carries on an agreement operation is to finish the access of the RE with tunable optical module.

Be to be understood that, in the described step 103, determine up wavelength inserts whether conflict is arranged for optional, in specific embodiment, when the CPRI uplink frame that in Preset Time, receives with this transmission rate phase same rate, can be directly according to the Wavelength Assignment table of described update of identification information self from port device, according to the Wavelength Assignment table that the Wavelength Assignment result notification is described from port device then.

It should be noted that, in specific embodiment, master port equipment also can be safeguarded described Wavelength Assignment table according to actual needs, such as when losing from port device synchronously or rolling off the production line, the wavelength of correspondence is set to unallocated state to (up wavelength and downstream wavelength) corresponding wavelength use state, and removes corresponding to the port device sequence number.

104, reselect a transmission rate, return execution with the step of the transmission rate transmission CPRI downlink frame of this selection, namely return execution in step 101.

Wherein, the system of selection of the transmission rate in step 101 and the step 104 is: begin to select from the highest speed, gradually changing down.If minimum speed does not realize that the highest speed is returned in redirect, restarts the rate consulation process synchronously yet.

When carrying out rate consulation, Z.2.0, master port equipment is writing the highest CPRI version that it is supported, Z.66.0 and Z.194.0 writing High-Level Data Link Control (HDLC, High LevelData Link Control protocol) and the Ethernet speed that it is supported respectively.

It should be noted that, more than operation all is under the synchronous regime at CPRI major state machine and carries out, other states of required experience such as follow-up protocol synchronization negotiation, C/M rate consulation state etc., can be operated referring to existing technology when inserting from port device.

As from the foregoing, when master port equipment is REC, when being RE from port device, by at REC internal configurations Wavelength Assignment table, and REC determines that according to described Wavelength Assignment table wavelength and wavelength use state information and send to RE by the CPRI downlink frame, and when RE inserts, upgrade described Wavelength Assignment table, thereby allow to have the smooth connecting system of RE of tunable optical module.As seen, because the RE in this scheme can adopt the tunable optical module, so do not need all to prepare a specific optical module for each wavelength, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

Embodiment two,

This example will be described from the angle from port device.Should can be RE from port device, and the optical module from port device can be the tunable optical module, comprises from the port transmitter with from end receiver in this tunable optical module.

The wireless device cut-in method that present embodiment provides can comprise: configuration from the reception wavelength of port device (such as, from the operation wavelength of end receiver); Select a transmission rate, and pass through to receive the CPRI downlink frame from end receiver with the transmission rate of this selection, wherein, upgoing wave long message, downstream wavelength information and wavelength that can carry master port equipment in the CPRI downlink frame provides use state information; If in preset time T 2, receive correct CPRI downlink frame, namely with the CPRI downlink frame of described transmission rate phase same rate, judge whether the upgoing wave long message that receives and up wavelength and the downstream wavelength of downstream wavelength information correspondence are assigned with; When described up wavelength and downstream wavelength are not assigned with, according to the configuration of the upgoing wave long message that receives from the emission wavelength of port device (such as, operation wavelength from the port transmitter), and send the CPRI uplink frame that carries from the port device sign, with its inner Wavelength Assignment table of notice master port renewal of the equipment.Thus, can realize from port device, such as the access of the RE with tunable optical module.

Particularly, see also Fig. 2, the idiographic flow of the wireless device cut-in method that present embodiment provides can comprise:

201, configuration is from the operation wavelength of end receiver; Specifically can be according to the operation wavelength of the algorithm configuration that presets from end receiver; Perhaps, in the wavelength that can receive downlink optical signal, select a wavelength configuration from the operation wavelength of end receiver.

For example, if be the RE with tunable optical module from port device, then RE can be according to the operation wavelength of the algorithm configuration that presets from end receiver, such as according to certain wavelength of selective sequential from small to large of wavelength and with it as the operation wavelength from end receiver; Perhaps, RE also can be according to the operation wavelength of the wavelength configuration that receives downlink optical signal from end receiver, such as, if the wavelength that uses from the descending REC that does not set up the CPRI link that receives activation is to information, then can therefrom select a pair of untapped wavelength as the operation wavelength from end receiver, can improve the speed of Wavelength Assignment like this.

202, select a transmission rate, with the transmission rate of this selection and by receiving the CPRI downlink frame from end receiver, namely select a transmission rate, carry out rate consulation with master port equipment.

If 203 receive correct CPRI downlink frame in preset time T 2, namely receive with step 201 in the CPRI downlink frame of the transmission rate phase same rate selected, then represent the rate consulation success, enter synchronous regime, so execution in step 204; If in described preset time T 2, do not receive correct CPRI downlink frame, then represent the rate consulation failure, fail to enter synchronous regime, so execution in step 205; Wherein, described preset time T 2 can be rule of thumb or standard code determine, such as, 3.9～4.1s need adjust according to the wavelength regulation time.

Wherein, upgoing wave long message, downstream wavelength information and wavelength that can carry master port equipment in the CPRI downlink frame provides according to its corresponding Wavelength Assignment table use state information, during concrete enforcement, can carry upgoing wave long message, downstream wavelength information and wavelength by reserved field in the CPRI downlink frame and use state information, this reserved field can be pre-defined in the CPRI agreement.

204, when the corresponding up wavelength of the upgoing wave long message of determining to receive and downstream wavelength are not assigned with, according to the operation wavelength of the upgoing wave long message configuration that receives from the port transmitter, pass through to send the CPRI uplink frame from the port transmitter with the transmission rate of selecting.Wherein, described CPRI uplink frame portability has the identification information from port device, and such as when described when being RE from port device, described identification information can be RE-SN; If be REC from port device, described identification information can be REC-SN or REC-ID.This RE-SN is used for sign RE, and REC-SN or REC-ID are used for sign REC.

After this, can and use state information to determine further described up wavelength inserts whether conflict is arranged according to the upgoing wave long message in the CPRI downlink frame, downstream wavelength information.If up wavelength inserts not conflict, then continue the negotiation that carries on an agreement, to finish the access of the RE with tunable optical module.If up wavelength has access to conflict, random wait after a period of time then judges again whether the upgoing wave long message that receives and the corresponding up wavelength of downstream wavelength information and downstream wavelength are assigned with.If be assigned with, then upgrade the use state information of this uplink and downlink wavelength in the local wavelength state table, return then and carry out configuration from the step of the operation wavelength of end receiver, namely execution in step 201; If also be not assigned with, then return execution and pass through from the step of port transmitter transmission CPRI uplink frame with the transmission rate of selecting, namely execution in step 204.

It should be noted that, can be according to actual needs from port device, the local wavelength state table that its inside is pre-configured is safeguarded, such as described when port device loses synchronously or roll off the production line, perhaps when the timer of wavelength state table surpasses the time of presetting, wavelength state table medium wavelength is used the state information zero clearing or is set to not use state.

205, reselect a transmission rate, return execution with the step of the transmission rate reception CPRI downlink frame of this selection, namely execution in step 202.

Certainly, can also judge before reselecting a transmission rate whether this transmission rate of reselecting is minimum speed limit, if not, return execution with the step of the transmission rate reception CPRI downlink frame of this selection, i.e. step 202; If return and carry out configuration from the step of the operation wavelength of end receiver, i.e. step 201.

Wherein, the system of selection of the transmission rate in step 202 and the step 205 is: begin to select from the highest speed, gradually changing down.If minimum speed does not realize that the highest speed is returned in redirect, restarts the rate consulation process synchronously yet.

When carrying out rate consulation, Z.2.0 master port equipment writing the highest CPRI version that it is supported, Z.66.0 and Z.194.0 writing HDLC and the Ethernet speed that it is supported respectively.

It should be noted that more than operation all is under the synchronous regime at CPRI major state machine and carries out, and is when this state, from the transmitter that port device should be closed it, namely said from the port transmitter in the embodiment of the invention.In addition, it should be noted that also that other states of required experience such as follow-up protocol synchronization negotiation, C/M rate consulation state etc., can be operated referring to existing technology when inserting from port device.

As from the foregoing, present embodiment can be according to the operation wavelength of the upgoing wave long message configuration that receives from the port transmitter from port device, and by sending the CPRI uplink frame from the port transmitter with its inner Wavelength Assignment table of notice master port renewal of the equipment, therefore, the scheme that provides of present embodiment can realize adopting the tunable optical module from the smooth connecting system of port device and operate as normal.Therefore, the technical scheme that adopts present embodiment to provide does not need all to prepare a specific optical module for each wavelength, but also can transmit both direction and multi-wavelength's light signal in an optical fiber, therefore can reduce the cost of storage and O﹠M.

Embodiment three,

In order to implement above method better, following examples are REC with master port equipment, are that RE is that example elaborates from port device.

In order to solve the Wavelength Assignment of the RE that adopts the tunable optical module, and RE and REC set up the CPRI link and enter the problem of normal operating conditions, need improve existing REC and RE.

Particularly, REC comprises the Wavelength Assignment module, and this Wavelength Assignment module can be with the independently form realization of module or equipment, and referring to Fig. 3, a newly-increased functional module that also can be used as existing equipment realizes, referring to Fig. 4 and Fig. 5.The Wavelength Assignment module can also comprise a Wavelength Assignment table, preserve downstream wavelength information, upgoing wave long message, wavelength use state information, RE sequence number (RE-SN), REC sequence number (REC-SN) or REC sign information such as (REC-ID), referring to table one.The optical module that REC sets up the CPRI link can be fixed wave length optical module (referring to Fig. 4), also can be tunable optical module (referring to Fig. 5).

Table one (Wavelength Assignment table):

Downstream wavelength

Up wavelength

Wavelength uses state

RE-SN

REC-ID or REC-SN

……

And, the RE end comprises a wavelength negotiation module, this wavelength negotiation module can be with the independently form realization of module or equipment, a newly-increased functional module that also can be used as existing equipment realizes, certainly, can also be by other implementation, but easy to use for the user, generally the what's new module as RE realizes when implementing.The wavelength negotiation module can also comprise a wavelength state table, as shown in Table 2, preserves downstream wavelength information, upgoing wave long message and wavelength and uses information such as state information.The optical module that RE sets up the CPRI link is the tunable optical module.

Table two (wavelength state table):

Downstream wavelength	Up wavelength	Wavelength uses state
			……	……	……

It should be noted that, give control subsystem, transmission subsystem, baseband subsystems and power module among Fig. 5, wherein, control subsystem comprises the Wavelength Assignment module that clock module, signaling processing module, operating maintenance module and the embodiment of the invention increase newly, except the Wavelength Assignment module, when specifically implementing, other modules can not repeat them here referring to existing technology.

In addition, owing to when distributing wavelength, always realize with the right form of wavelength, therefore, do not define corresponding wavelength use mode field respectively to record up use state information and descending use state information at up wavelength and downstream wavelength in table one and the table two, but only provide the field of a called after " wavelength use state ", that is to say that what said in the embodiment of the invention " wavelength of up wavelength uses state " or " wavelength of downstream wavelength uses state " referred to is exactly that the right wavelength of their corresponding wavelength uses state.

Because the embodiment of the invention replaces with the tunable optical module of wavelength-tunable with the optical module of the fixed wave length among the existing RE, therefore, in order to make the RE with tunable optical module can normally dock with REC, the scheme that present embodiment provides can be taked following steps:

1, master port equipment is selected a transmission rate, and sends the CPRI downlink frame with the transmission rate of this selection by the master port transmitter.The field of making an appointment in the described downlink frame comprises downstream wavelength information and upgoing wave long message, and this use state information to wavelength, such as field value be 0 expression this wavelength is not also dispensed, be that this is occupied to wavelength in 1 expression.

2, regulate the reception wavelength from port device according to downlink optical signal, to select one downstream signal light wavelength passage is arranged, and select one as receiving velocity, carry out rate consulation.If can receive correct CPRI downlink frame (the CPRI downlink frame that sends in the step 1) with this receiving velocity, then mean the rate consulation success.Can from the CPRI downlink frame that receives, obtain the up-downgoing wavelength information and use state information from port device, if this does not also dispense wavelength, then arrange from the operation wavelength of port transmitter (getting final product the transmitter of light-adjusting module) according to the upgoing wave long message of receiving, and start from the port transmitter, can in CPRI uplink frame to be sent, carry from the sequence number of port device place RE simultaneously, for example, the field of making an appointment with master port equipment in the CPRI uplink frame to be sent is set to from the sequence number of port device place RE.

3, master port equipment is received the CPRI uplink frame that sends from port device in the step 2 with the transmission rate of selecting in the step 1 in official hour.If satisfy the Wavelength Assignment condition then confirm, upgrade the Wavelength Assignment table, revise the use state of downstream wavelength for distributing, such as being revised as, the use state information field in the CPRI downlink frame distributes, and in the CPRI downlink frame, carry the sequence number of the RE that receives, such as the sequence number that writes the RE that receives in the respective field in the CPRI downlink frame, continue next step negotiations process of CPRI agreement then.If do not satisfy the Wavelength Assignment condition, then ignore described field information.

If 4 do not receive correct response message at the appointed time from port device from downlink frame, represent that then this is used wavelength, then closer is from the port transmitter, from other untapped wavelength, select a pair of wavelength, it is set from end receiver with from the operation wavelength of port transmitter, again carry out the rate consulation process, up to successfully applying for a pair of idle wavelength.

In order to describe clearlyer, below will be respectively describe from master port equipment with from the angle of port device.

(1) master port equipment

Supposing that at this this master port equipment is REC, is RE from port device.

As shown in Figure 6, under synchronous regime, the rate consulation step of CPRI agreement master port equipment (be example with REC) can comprise:

After A301, master port device power start, if what REC used is the tunable optical module, then be a pair of untapped wavelength of this tunable optical module assignment (comprising up wavelength and downstream wavelength), the operation wavelength of configuration master port transmitter and master port receiver, and renewal Wavelength Assignment table, execution in step A302 then.If REC uses the laser of fixed wave length, this step can be skipped.

A302, select a transmission rate, and send the CPRI downlink frame to from port device RE with the transmission rate of this selection by the master port transmitter; Wherein, need to carry upgoing wave long message and downstream wavelength information in the CPRI downlink frame, and this wavelength to wavelength (up wavelength and downstream wavelength) uses state information, such as carrying by reserved field in the CPRI downlink frame, wherein, field value be 0 expression this wavelength is not also dispensed, be 1 expression this is occupied to wavelength, etc.

The system of selection of speed is: begin to select from the highest speed, gradually changing down.

A303, by the master port receiver, with the phase same rate, namely receive the CPRI uplink frame that is sent by RE with the speed identical with the transmission rate of selection in the steps A 302, (this is because REC may receive the CPRI uplink frame that a plurality of RE send simultaneously to carry the RE sequence number in this CPRI uplink frame, therefore need come RE is identified according to the RE sequence number), represent that this RE need ask certain to wavelength; If in preset time T 1, receive correct CPRI uplink frame, show that then this RE and REC are synchronous, so execution in step A304; If do not receive correct CPRI uplink frame in the time at T1, show that then this RE and REC also not synchronously, need reselect another transmission rate, i.e. execution in step A306; Wherein, T1 can be 0.9～1.1s, need adjust according to the wavelength regulation time.

A304, determine up wavelength inserts whether conflict is arranged, such as, detected by the uplink optical signal of REC as master port equipment, if detect the uplink optical signal conflict, as detect the LOS signal, namely showing has two or more RE to apply for that this to wavelength (be distribute in the steps A 301 that to wavelength), restarts rate consulation so turn back to the synchronous regime of starting state machine, and namely steps A 302; Otherwise, if do not detect the uplink optical signal conflict, represent that then up wavelength inserts not conflict, so execution in step A305.

The RE sequence number that comprises in the CPRI uplink frame that A305, REC record is received, feed back to the Wavelength Assignment module, and the Wavelength Assignment table in the renewal Wavelength Assignment module, such as, RE sequence number in the CPRI uplink frame that receives is write in the Wavelength Assignment table and this field corresponding to wavelength, and this wavelength use state to wavelength is set to distribution state; I.e. expression has been distributed to the corresponding RE of this RE sequence number with this wavelength to (comprising up wavelength and downstream wavelength).Meanwhile, the wavelength of master port apparatus modifications CPRI downlink frame specific field uses state information, to inform this use state to wavelength of RE, avoids RE again this to be filed an application to ask to wavelength.After this, REC sends and confirms that bag (ACK bag) to RE, enters next step state, and the synchronization negotiation that namely carries on an agreement operation is to finish the access of the RE with tunable optical module.

Certainly, REC also need be at the highest CPRI version that Z.2.0 writes its support of downlink frame, Z.66.0 and Z.194.0 writing HDLC and the Ethernet speed that it is supported respectively, in addition, in order to improve the efficient of Wavelength Assignment, can also write other wavelength available to information in the CPRI downlink frame, namely the wavelength of REC use that activate, that do not set up the CPRI link is to information.

It should be noted that, REC can safeguard the Wavelength Assignment table according to actual needs, such as losing at RE synchronously or when rolling off the production line, wavelength that need correspondence is set to unallocated state to the wavelength use state of (being up wavelength and up wavelength), and removes this to the corresponding RE-SN of wavelength and REC-SN or REC-ID field.

A306, reselect another transmission rate, return execution and send the step of CPRI downlink frame with the transmission rate of this selection, namely return execution in step A301.Wherein, the system of selection of transmission rate is: begin to select from the highest speed, gradually changing down.If minimum speed does not realize that the highest speed is returned in redirect, restarts the rate consulation process, namely re-executes above step synchronously yet.

(2) from port device

Being somebody's turn to do from port device in this hypothesis be RE, and master port equipment is REC.

As shown in Figure 7, under synchronous regime, the CPRI agreement can be as follows from the rate consulation step of port device (be example with RE), it should be noted that, when this state, the transmitter that should close it from port, the not luminance that namely powers on is up to receiving the CPRI downlink frame identical with selecting speed.

B301, RE configuration is from end receiver operation wavelength (be in closed condition from the port transmitter this moment); For example, can be as follows:

Algorithm that RE presets according to certain is regulated from the end receiver operation wavelength, such as according to certain wavelength of selective sequential from small to large of wavelength and with it as the operation wavelength from end receiver; Perhaps,

If descending optical information is arranged, the reception wavelength that RE also can arrange the tunable optical module is the operation wavelength from end receiver, for example, if the wavelength that uses from the descending REC that does not set up the CPRI link that receives activation is to information, then can therefrom select a pair of untapped wavelength as the operation wavelength from end receiver, can improve the speed of Wavelength Assignment like this.

B302, select a transmission rate, and with the transmission rate of this selection by receiving the CPRI downlink frame from end receiver, if in preset time T 2, receive the CPRI downlink frame of phase same rate, show that then RE and REC are synchronous, can execution in step B303; If the CPRI downlink frame in that T2 does not receive the phase same rate in the time then shows RE and REC also not synchronously, so need reselect a transmission rate, i.e. execution in step B308; Wherein, T2 can be 3.9～4.1s, need adjust according to the wavelength regulation time;

Wherein, the system of selection of transmission rate is: begin to select from the highest speed, gradually changing down.

In addition, need to carry upgoing wave long message and downstream wavelength information in the CPRI downlink frame, and this wavelength to wavelength uses state information; Such as carrying these information by reserved field in the CPRI downlink frame, certainly, this reserved field need be made an appointment in the CPRI agreement.

Wherein, use state information to realize in the following way:

Field value be 0 expression this wavelength is not also dispensed, be 1 expression this is occupied to wavelength, be 2 expression wavelength access interferences.

B303, determine whether the corresponding up wavelength of the upgoing wave long message that receives is assigned with, in other words, determine its corresponding wavelength to whether being assigned with according to the upgoing wave long message that receives and downstream wavelength information, if, execution in step B304 then; If not, execution in step B305 then.

The wavelength of this up wavelength correspondence uses state information (namely the right wavelength of this wavelength uses state information) in B304, the local wavelength state table of renewal, soon its wavelength use state information is recorded as and distributes, return then and carry out configuration from the step of the operation wavelength of end receiver, namely return execution in step B301.

It should be noted that, RE can safeguard the wavelength state table according to actual needs, such as losing at RE synchronously or when rolling off the production line, perhaps when the timer of wavelength state table surpasses the time of presetting, when perhaps RE reenters synchronous regime at every turn, all need wavelength state table medium wavelength is used the state information zero clearing, namely be set to not use state.

The upgoing wave long message configuration that B305, basis receive starts from the port transmitter from the operation wavelength of port transmitter, and with identical speed, namely the transmission rate of Xuan Zeing is by sending the CPRI uplink frame to master port equipment from the port transmitter; Execution in step B306 then; Wherein, RE need write this RE sequence number in the predefined field in the CPRI uplink frame, and expression uses this to wavelength to the REC request.

B306, use state information to determine downstream wavelength inserts whether conflict is arranged according to downstream wavelength information and wavelength, if downstream wavelength inserts not conflict, then receive affirmation bag (ACK bag) that REC sends afterwards at RE, enter next step state, the synchronization negotiation that namely carries on an agreement operation is to finish the access of the REC with tunable optical module; If inserting, downstream wavelength has conflict, then execution in step B307.

B307, random wait a period of time (length of time can be decided by the strategy of operator), suspend the transmission wavelength and insert request, namely time-out sends the CPRI uplink frame, and continuation simultaneously monitors the wavelength information of CPRI downlink frame.Distribute if detect this wavelength, then upgrade the corresponding wavelength use of this up wavelength state in the local wavelength state table, select next wavelength then, the ingress rate negotiation state is namely returned and is carried out configuration from the step (returning execution in step B301) of the operation wavelength of end receiver.If detect this wavelength and also be not assigned with, then when the time of waiting for expires, resend wavelength and insert request, namely return execution with the transmission rate selected by the step (returning execution in step B305) from port transmitter transmission CPRI uplink frame.

B308, judge whether this transmission rate of reselecting is minimum speed limit, if not, then reselects a transmission rate, return execution and receive the step of CPRI downlink frame with this transmission rate of reselecting, namely return and carry out B302; If, return and carry out configuration from the step of the operation wavelength of end receiver, namely return execution in step B301.Wherein, can begin from the highest speed when selecting transmission rate to select, gradually changing down.If minimum speed does not realize synchronously yet, then reselect one and receive wavelength, begin to select from the highest speed again, changing down carries out rate consulation gradually.

It should be noted that the embodiment of the invention is to be the master port equipment of CPRI agreement with REC, RE is describing from port device of CPRI agreement.In specific implementation process, the master port equipment of CPRI agreement may be REC or RE, and the CPRI agreement may be REC or RE from port device equally, but each CPRI link has only a master port equipment, and one from port device.That is to say that what set up the CPRI link can be any two nodes of REC or RE.Referring to Fig. 8 and Fig. 9, Fig. 8 carries out the scene schematic diagram that the WDM mode is transmitted for setting up the CPRI link between REC and the RE, and Fig. 9 is for setting up the scene schematic diagram that the CPRI link carries out the transmission of WDM multiplex mode between RE and the RE.

As from the foregoing, present embodiment replaces with the optical module of the fixed wave length among the RE tunable optical module of wavelength-tunable, namely increase the Wavelength Assignment module at the REC end, increase the wavelength negotiation module at the RE end, and carry the RE sequence number in the CPRI uplink frame that RE sends to REC, in REC sends to the CPRI uplink frame of RE, carry the right wavelength information of wavelength and wavelength and use state information, can recognize the distribution condition that wavelength is right in order to allow mutually between RE and the REC, make the RE with tunable optical module can normally dock with REC.Because the RE in this scheme has adopted the tunable optical module, thus do not need for each wavelength all provides an optical module, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

Embodiment four,

In order to implement above method better, the embodiment of the invention also correspondingly provides a kind of master port equipment, and as shown in figure 10, this master port equipment comprises master port transmitter 401, master port receiver 402 and processing unit 403; It should be noted that, for convenience, give among Figure 10 from port device 500, should be understood that, do not belong to master port equipment from port device 500.

Master port transmitter 401 be used for to be selected a transmission rate, and with the transmission rate of this selection to sending the CPRI downlink frame from port device 500, that is, send the CPRI downlink frame to from port device 500 with the transmission rate of this selection;

Master port receiver 402, be used for receiving the CPRI uplink frame with the transmission rate that master port transmitter 401 is selected, namely the CPRI uplink frame that sends from port device is carried from the identification information of port device 500 in the described CPRI uplink frame, such as RE-SN, REC-SN or REC-ID;

Master port processing unit 403, be used in preset time T 1, receiving correct CPRI uplink frame when master port receiver 402, during namely with the CPRI uplink frame of described transmission rate phase same rate, and when determining that up wavelength access does not conflict, according to the Wavelength Assignment table from port device update of identification information self in the CPRI uplink frame that receives, then according to the Wavelength Assignment table with the described wireless device of Wavelength Assignment result notification, for example, according to this Wavelength Assignment table configuration CPRI downlink frame, namely in the CPRI downlink frame, carry upgoing wave long message and downstream wavelength information, and the wavelength that upgrades in the CPRI downlink frame uses state information, then this CPRI downlink frame is sent to RE, after this synchronization negotiation that can carry on an agreement operation is to finish the access of the RE with tunable optical module.Wherein, T1 can be rule of thumb or standard code determine, such as, 0.9～1.1s need adjust according to the wavelength regulation time.

Wherein, described master port transmitter 401, can also be used for when master port receiver 402 does not receive CPRI uplink frame with described transmission rate phase same rate in preset time T 1, reselecting a transmission rate, then with this transmission rate transmission CPRI downlink frame of reselecting.

Described master port processing unit 403 also is used for the Wavelength Assignment table is safeguarded, such as losing at RE synchronously or when rolling off the production line, need should be set to unallocated state by the corresponding wavelength use of up wavelength state, and removing RE sequence number.

Can comprise the Wavelength Assignment module in this master port processing unit 403, and described Wavelength Assignment table is configured in described Wavelength Assignment module.

This master port equipment can be RE or the REC with tunable optical module.

If master port equipment is REC, and what should use as the REC of master port equipment is the tunable optical module, then before master port transmitter 401 is selected transmission rate, described master port processing unit 403 can also distribute a pair of untapped wavelength for this optical module, be the up wavelength of tunable optical module assignment and downstream wavelength, dispose the operation wavelength of master port transmitter then according to the downstream wavelength of distributing, according to the operation wavelength of the up wavelength configuration master port receiver that distributes, and upgrade the Wavelength Assignment table.

More than the concrete enforcement of each unit can not repeat them here referring to method embodiment.

It should be noted that the embodiment of the invention is to be the master port equipment of CPRI agreement with REC, RE is describing from port device of CPRI agreement.In specific implementation process, the master port equipment of CPRI agreement may be REC or RE, and the CPRI agreement may be REC or RE from port device equally, but each CPRI link has only a master port equipment, and one from port device.

This scheme can realize allowing to adopt the RE of tunable optical module to insert, so therefore do not need all to prepare a specific optical module for each wavelength, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

Embodiment five,

In order to implement above method better, it is a kind of from port device that the embodiment of the invention also correspondingly provides, as shown in figure 11, should from port device comprise wavelength configuration unit 503, from end receiver 501 with from port processing unit 502;

Wavelength configuration unit 503 is used for configuration from the operation wavelength of end receiver 501; Specifically can be according to the operation wavelength of the algorithm configuration that presets from end receiver 501; Perhaps, in the wavelength of the downlink optical signal that can receive, select a wavelength configuration from the operation wavelength of end receiver 501;

From end receiver 501, be used for selecting a transmission rate, and receive the CPRI downlink frame with the transmission rate of this selection, wherein, can carry upgoing wave long message, downstream wavelength information in the CPRI downlink frame and use state information;

From port processing unit 502, be used for when in preset time T 2, receiving correct CPRI downlink frame from end receiver 501, during namely with the CPRI downlink frame of described transmission rate phase same rate, determine whether the downstream wavelength information that receives and up wavelength and the downstream wavelength of upgoing wave long message correspondence are assigned with, if described up wavelength and downstream wavelength are not assigned with, according to the operation wavelength of the upgoing wave long message configuration that receives from the port transmitter, with the transmission rate selected by sending the CPRI uplink frame that carries from the port device identification information from the port transmitter, with its inner Wavelength Assignment table of notice master port renewal of the equipment.Wherein, described preset time T 2 can be rule of thumb or standard code determine, such as 3.9～4.1s, need adjust according to the wavelength regulation time.

Described from port processing unit 502, also be used for when descending wavelength access has conflict, random wait is after a period of time, judge again whether the downstream wavelength and the up wavelength that receive are assigned with, if be assigned with, then upgrade the use state information of this downstream wavelength and up wavelength in the local wavelength state table, return then and carry out configuration from the step of the operation wavelength of end receiver; If also be not assigned with, then return execution passes through to send from the port transmitter CPRI uplink frame with the transmission rate of selecting step.

Described from port processing unit 502, also be used for the wavelength state table is safeguarded, such as losing at RE synchronously or when rolling off the production line, perhaps when the timer of wavelength state table surpasses the time of presetting, will using the state information zero clearing in the wavelength state table or be set to not use state.

Should from port processing unit 502, can comprise the wavelength negotiation module.

Described from end receiver 501, also be used for when the CPRI downlink frame that in preset time T 2, do not receive with described transmission rate phase same rate, reselecting a transmission rate, return execution with the step of the transmission rate reception CPRI downlink frame of this selection.

This master port equipment can be RE or the REC with tunable optical module.

Be the RE with tunable optical module from port device, wavelength configuration unit 503 particularly can be according to the operation wavelength of the algorithm configuration that presets from end receiver, such as according to certain wavelength of selective sequential from small to large of wavelength and with it as the operation wavelength from end receiver; Perhaps, also can be according to the operation wavelength of the wavelength configuration that receives downlink optical signal from end receiver, such as, if the wavelength that uses from the descending REC that does not set up the CPRI link that receives activation is to information, then can therefrom select a pair of untapped wavelength as the operation wavelength from end receiver, can improve the speed of Wavelength Assignment like this.

The scheme that present embodiment provides can realize adopting the RE of tunable optical module to insert smoothly and work, so do not need all to prepare a specific optical module for each wavelength, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

Embodiment six,

Correspondingly, the embodiment of the invention also provides a kind of communication system, and as shown in figure 12, this communication system comprises master port equipment 601 and from port device 602;

Described master port equipment 601, be used for selecting first transmission rate, and send by the master port transmitter with first transmission rate of this selection and to carry CPRI downlink frame that upgoing wave long message, downstream wavelength information and wavelength use state information to from port device 602, receive the CPRI uplink frame that sends from port device 602 with described transmission rate by the master port receiver, carry described identification information from port device 602 in the described CPRI uplink frame; If in first preset time T 1, receive correct CPRI uplink frame, namely with the CPRI uplink frame of described transmission rate phase same rate, then when determining that up wavelength access does not conflict, according to establishing the Wavelength Assignment table of identified information updating self from port in the CPRI uplink frame that receives, according to the Wavelength Assignment table that the Wavelength Assignment result notification is described from port device 602 then, for example, according to this Wavelength Assignment table configuration CPRI downlink frame, namely in the CPRI downlink frame, carry upgoing wave long message and downstream wavelength information, and the wavelength that upgrades in the CPRI downlink frame uses state information, then this CPRI downlink frame is sent to from port device 602, after this synchronization negotiation that can carry on an agreement operation is to finish the access from port device 602 with tunable optical module; Wherein, described preset time T 1 can be rule of thumb or standard code determine, such as 0.9～1.1s, need adjust according to the wavelength regulation time;

Described from port device 602, be used for configuration from the operation wavelength of end receiver, select second transmission rate, and send the CPRI downlink frame with second transmission rate of this selection by receive master port equipment 601 from end receiver, carry upgoing wave long message, downstream wavelength information and wavelength in the described CPRI downlink frame and use state information; If receive correct CPRI uplink frame in 2 times in preset time T, namely with the CPRI downlink frame of described transmission rate phase same rate, according to the operation wavelength of the upgoing wave long message configuration that receives from the port transmitter, with the transmission rate selected by sending the CPRI uplink frame that carries from the port device identification information from the port transmitter to master port equipment 601, with its inner Wavelength Assignment table of notice master port renewal of the equipment.After this, can be to use state information to determine that downstream wavelength inserts conflict according to downstream wavelength information and wavelength after, the synchronization negotiation that carries on an agreement operation is to finish the access of the RE with tunable optical module.Wherein, described preset time T 2 can be rule of thumb or standard code determine, such as 3.9～4.1s, need adjust according to the wavelength regulation time.

Described master port equipment 601, also be used for not receiving correct CPRI uplink frame when the master port receiver in the time at T1, during namely with the CPRI uplink frame of described transmission rate phase same rate, reselect a transmission rate, send the CPRI downlink frame with this transmission rate of reselecting then.

Described from port device 602, also be used for when the CPRI downlink frame that do not receive in the time at T2 with described transmission rate phase same rate, reselecting a transmission rate, return execution with the step of the transmission rate reception CPRI downlink frame of this selection.

Wherein, master port equipment 601 can comprise master port transmitter 401, master port receiver 402 and master port processing unit 403; From end equipment 602 can comprise dispensing unit 503, from end receiver 501 with from port processing unit 502.

More than the concrete enforcement of each unit can not repeat them here referring to embodiment one to five.

Below will do explanation briefly to master port equipment 601 with from the rate consulation between the port device 602 for example.

Step 1, kept closed condition from the port transmitter before the ingress rate synchronous regime, not luminance namely powers on.

Step 2, master port equipment 601 carry downstream wavelength information and upgoing wave long message in the specific fields (can be pre-defined in the CPRI agreement) of the CPRI downlink frame that sends, and this to wavelength of wavelength use state information (as field value be 0 expression this wavelength is not also dispensed, be that this is occupied to wavelength in 1 expression).

Step 3, select corresponding reception wavelength from port device 602, and select one downstream signal light wavelength passage is arranged, enter synchronous regime, consult transmission rate.After transmission rate is consulted successfully, from the CPRI downlink frame that master port equipment 601 sends, obtain downstream wavelength information and upgoing wave long message, with and wavelength use state information, if this does not also dispense wavelength, then arrange from the port transmitter according to the upgoing wave long message of receiving, and start from the port transmitter, simultaneously write (can be pre-defined in the CPRI agreement) in the specific fields of the CPRI uplink frame that sends to master port equipment 601 and be the sequence number (such as the sequence number of RE or REC) from port device 602, the expression request uses this to wavelength.

After step 4, master port equipment 601 are received this CPRI uplink frame, if agree this request then confirm, the wavelength of revising the CPRI downlink frame uses state information field for distributing, upgrade the Wavelength Assignment table, and in the respective field of CPRI downlink frame, write the sequence number from port device 602 that receives, and according to the wavelength use state (namely being updated to " distributing " state at this) in the record renewal CPRI downlink frame of Wavelength Assignment table, should continue the CPRI protocol synchronization negotiations process of back from port device 602 and master port equipment 601 then.

If step 5 does not successfully apply for that from port device 602 this is to wavelength, maybe this is used wavelength, then from other untapped wavelength, select a pair of wavelength, setting is from end receiver with from the operation wavelength of port transmitter, restart the rate consulation process, up to successfully applying for to a pair of wavelength and entering run mode.

Wherein, master port equipment 601 is specifically as follows RE or REC, also can be RE or REC from port device 602.

As from the foregoing, present embodiment replaces with the optical module of the fixed wave length the RE (can be used as from port device 602 or master port equipment 601) the tunable optical module of wavelength-tunable, correspondingly existing C PRI agreement is made amendment then, namely increase the Wavelength Assignment module in master port equipment 601 sides, increasing the wavelength negotiation module from port device 602 sides, and carry the RE sequence number in the CPRI uplink frame that sends to REC from port device 602, send at master port equipment 601 and from the CPRI uplink frame of port device 602, to carry the right wavelength information of wavelength and wavelength and use state information, can recognize the distribution condition that wavelength is right in order to allow mutually between port device 602 and the master port equipment 601, make to have can normally docking with master port equipment 601 from port device 602 of tunable optical module; Concrete modification can be referring to the embodiment of front, because the RE in this scheme has adopted the tunable optical module, so not needing all provides an optical module for each wavelength, but also can in an optical fiber, transmit both direction and multi-wavelength's light signal, therefore can reduce the cost of storage and O﹠M.

One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.

More than wireless device cut-in method, device and communication system that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a wireless device cut-in method is characterized in that, comprising:

2. method according to claim 1 is characterized in that, also comprises:

If in described Preset Time, do not receive correct CPRI uplink frame, then reselect a transmission rate, return the step that execution sends the CPRI downlink frame with described transmission rate and receives the CPRI uplink frame.

3. method according to claim 1 is characterized in that, described CPRI downlink frame comprises that downstream wavelength information, upgoing wave long message and the wavelength determined according to the Wavelength Assignment table use state information.

4. according to each described method in the claim 1 to 3, it is characterized in that described Wavelength Assignment table according to described update of identification information master port equipment from port device comprises:

Described sequence number from port device is write field corresponding with up wavelength and downstream wavelength the Wavelength Assignment table, and the corresponding wavelength of described up wavelength and downstream wavelength uses mode field to be set to distribution state.

5. method according to claim 4 is characterized in that, also comprises:

, be set to unallocated state with described up wavelength and the corresponding wavelength use of downstream wavelength state in the described Wavelength Assignment table, and remove described identification information from port device when port device loses synchronously or roll off the production line described.

6. a wireless device cut-in method is characterized in that, comprising:

Configuration is from the reception wavelength of port device;

7. method according to claim 6 is characterized in that, described configuration comprises from the reception wavelength of port device:

According to the reception wavelength of the algorithm configuration that presets from port device; Perhaps,

Select a wavelength receiving downlink optical signal, and be reception wavelength from port device with selected wavelength configuration.

8. according to the method for claim 6 or 7, it is characterized in that, also comprise:

When the upgoing wave long message of determining to receive and the corresponding up wavelength of downstream wavelength information and downstream wavelength have been assigned with, upgrade the corresponding wavelength of up wavelength described in the local wavelength state table and downstream wavelength and use state information, and return and carry out configuration from the step of the reception of port device.

9. method according to claim 8 is characterized in that, also comprises:

When losing synchronously or rolling off the production line, perhaps when the timer of wavelength state table surpasses the time of presetting, will use the state information zero clearing in the wavelength state table or be set to not use state.

10. a master port equipment is characterized in that, comprises master port transmitter, master port receiver and processing unit;

11. master port equipment according to claim 10 is characterized in that:

Described processing unit also is used for when losing from port device synchronously or rolling off the production line, and uses state information to be set to unallocated state with the corresponding wavelength of up wavelength in the described Wavelength Assignment table, and removes described identification information from port device.

12. one kind from port device, it is characterized in that, comprises the wavelength configuration unit, from end receiver and processing unit;

13. according to claim 12 from port device, it is characterized in that:

Described is wireless device or the radio equipment controller with tunable optical module from port device.

14. a communication system is characterized in that, comprises master port equipment and from port device;

Described from port device, be used for selecting second transmission rate, and with described second transmission rate reception master port equipment transmission CPRI downlink frame, and when the CPRI downlink frame that in second Preset Time, receives with this second transmission rate phase same rate, dispose its emission wavelength and send the CPRI uplink frame of carrying from the identification information of port device to master port equipment according to the upgoing wave long message that receives.