CN102761951B - Clock synchronization processing method, device and communication system - Google Patents
Clock synchronization processing method, device and communication system Download PDFInfo
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- CN102761951B CN102761951B CN201110105686.7A CN201110105686A CN102761951B CN 102761951 B CN102761951 B CN 102761951B CN 201110105686 A CN201110105686 A CN 201110105686A CN 102761951 B CN102761951 B CN 102761951B
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Abstract
The invention provides a clock synchronization processing method, a device and a communication system. The processing method comprises the steps as follows: acquiring the system day time information; generating the air interface day time information corresponding to a specific system frame according to the system day time information and the specific system frame information; wherein the air interface day time information corresponding to the specific system frame is used for delivering the system day time information between a long-term evolution return base station and long-term evolution return user equipment; and sending the air interface information containing the air interface day time information corresponding to the specific system frame to the long-term evolution return user equipment. The invention provides a corresponding device and a communication system comprising device. On the basis of the technical scheme provided by the invention, the system time information with high precision can be provided for a remote base station by using the LTE (Long Term Evolution) as the return of the base station, thereby realizing clock synchronization.
Description
Technical field
The embodiment of the present invention relates to Time synchronization technique, particularly relates to a kind of clock synchronous processing method, device and communication system.
Background technology
Long Term Evolution (Long Term Evolution, hereinafter referred to as: LTE) architecture is by (the Radio Network Controller of radio network controller in 3GPP R6, hereinafter referred to as: RNC), base station NodeB combines together, i.e. evolution base station eNodeB.ENodeB provides face, UMTS land wireless access (the Evolved Universal Terrestrial Radio Access of evolution, hereinafter referred to as: wireless spread-spectrum technology (Radio Link Control E-UTRA), hereinafter referred to as: RLC) layer/wireless access control (Media Access Control, hereinafter referred to as: MAC) layer/PDCP (Packet Data Convergence Protocol, hereinafter referred to as: the PDCP) function of the physical layer protocol such as layer and radio resource control layer (Radio Resource Control, hereinafter referred to as: function RRC).Whole system is tending towards flattening, and this system configuration and the change of system make LTE compared with existing UTRA structure, and structure reduces, and cost reduces; And from performance, be conducive to reducing data transfer delay.
Than wireless communication technology in the past, time division multiplexing TDD-LTE technology and frequency division multiplexing FDD-LTE technology can provide the highest up 50M, the bandwidth of the highest descending 100M, the 3G technology before superorder far away, such bandwidth is beneficial to operator's development dataset business and mobile Internet business.In addition, the high bandwidth characteristic of LTE network makes to do base station backhaul with LTE becomes a kind of trend, current LTE base station is done backhaul and is comprised following application scenarios, such as hot spot coverage provides backhaul, for the base station of kerbside building inside provides backhaul, for the base station covering subway entrance provides backhaul, or provide backhaul for the base station in high ferro train.
LTE backhaul base station does backhaul can to little base station, make the multiple backhaul UE of one of them backhaul base station coverage, backhaul is done to Multiple Small Cell Sites, or do backhaul to macro base station, a LTE backhaul base station can only cover a backhaul UE, only give a macro base station backhaul, in addition, in high ferro wireless backhaul scene, as the GSM small base station transmitter (GSM Pico BTS) in train, WCDMA base station, TD-SCDMA base station, LTE base station or WiFi access point etc. are connected in the LTE backhaul UE on train by router, then the LTE backhaul base station that passage is deployed in rail both sides is connected with gateway device.The data of all kinds of base station are first sent in gateway after UE converges, and then are transmitted in the radio network controller of corresponding base station control station BSC, WCDMA, the radio network controller of TD-SCDMA, the packet-based core networks EPC of enhancing or WiFi access controller by router.
No matter be utilize LTE backhaul base station to do backhaul to macro base station or little base station, all need to meet the requirement of base station at synchronization aspects of multiple types, different mobile networks to the needs of clock synchronous as following table:
Above synchronization accuracy, refer to the synchronization accuracy between base station and standard clock source, as can be seen from the above table because clock synchronous relates to the clock of eating dishes without rice or wine of base station, very large on the impact of performance of handoffs and covering performance, therefore no matter be 2G, 3G, or the base station of beyond 3G is all very strict to the required precision of clock frequency, required precision is all 0.05ppm, in addition because the up-downgoing of TDD base station adopts the feature of same frequency, in order to avoid interference, to the required precision of clock phase also very strict, be all not more than 3 μ s.
Global positioning system (Global Positioning System, hereinafter referred to as: GPS) be the technical scheme that can meet all mobile network's clock synchronous demands at present, but GPS needs each base station to have a receiver, and ensure that satellite is in ground base station within sweep of the eye, and do in the scene of backhaul in use LTE base station, part may be applied in indoor, such as the base station of kerbside building inside provides backhaul and provide the scene of backhaul for the base station covering subway entrance, be not suitable for adopting GPS to carry out synchronously.
Under a wireless backhaul scene, LTE backhaul base station D-ENB obtains clock synchronous by PTP master clock or GNSS etc., and as host node for telepoint base station BTS provides synchronous, telepoint base station BTS can be regarded as from node.D-ENB and LTE backhaul UE R-UE is by having eated dishes without rice or wine to the backhaul of the data of BTS.A kind of is adopt accurate clock synchronous protocol (PRECISION CLOCK SYNCHRONIZATION PROTOCOL at host node with from the mode transmitting TOD information between node, hereinafter referred to as: mode PTP), namely defines four kinds of sync message: Sync (sync message), Follow_UP (following message), Delay_Req (postponing request), Delay_Resp (delayed response).One master clock Master and is as follows from the synchronizing process of clock Slave:
Within every 2 seconds, to sending out a Sync sync message from node, this message is the message marked by the transmitting time stamping expectation to host node.But may have delay because the transmitting time estimated sends message itself with reality, therefore time mark can not send with sync message.This sync message is stamped time of reception mark (in order to improve precision, should send or time of reception in physical layer or close to the position probing of physical layer, record and mark) at receiving terminal from node.
Host node is to sending a Follow_UP message from node, this message comprises the mark of the transmitting time accurately of previous sync message.Utilize these two time marks can obtain the time delay of it and host node from node, adjust clock frequency according to this.
From node to host node forward delay interval request Delay_Req message, (interval of latency request message is independent setting, it is general that comparatively sync message interval is long, this message is by from its accurate transmitting time of nodes records, stamps time of reception accurately mark by host node).
Host node is to returning a time delay response Delay_Resp message from node.This message is with the accurate time of reception mark of previous latency request message.From the transmitting time accurately that node utilizes this time and recorded by it, host node can be calculated and spread out of its clock drift error of delay adjustment between node.
Master and slave clock skew: offset=t2-t1-T, wherein, chain-circuit time delay T=(t2-t1+t4-t3)/2; Shift time=(t2-t1)-(t2-t1+t4-t3)/2=(t2-t1-t4+t3)/2, is regulated from clock by shift time.
In order to ensure time precision, timestamp can be squeezed in the position between physical layer and MAC layer, realizing synchronously, certainly also comprising the transmission of TOD information by this message interaction mode of carrying time stamp.The form of above-mentioned time stamp is as follows:
Wherein, Timestamp data types to express is from the positive time value of timeorigin; SecondsField member is the integer part of time stamp value second; NanosecondsFiled member is the fractional part of time stamp nanosecond, and nanosecondsFiled member is less than 109 usually.
In the technical scheme of above-mentioned clock synchronous, in the process that time stamp transmits on eating dishes without rice or wine, due to the uncertainty of radio base band process and wireless link environment, larger delay variation may be caused, affect synchronous precision.
Therefore, prior art is done in the application of backhaul utilizing LTE base station, there is the defect that clock synchronization accuracy is low.
Summary of the invention
The embodiment of the present invention provides a kind of clock synchronous processing method, device and communication system, in order to realize, when using LTE to do base station backhaul, for telepoint base station provides high-precision system Time of Day information, realizing clock synchronous.
The embodiment of the present invention provides a kind of clock synchronous processing method, comprising:
Acquisition system Time of Day information;
Generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to described system Time of Day information and particular system frame information, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
The idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine is sent to Long Term Evolution backhaul subscriber equipment.
The embodiment of the present invention also provides another kind of clock synchronous processing method, comprising:
Receive Long Term Evolution backhaul base station and send the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Synchronous according to described the eat dishes without rice or wine Time of Day Information Acquisition System Time of Day information corresponding with particular system frame line time of going forward side by side.
The embodiment of the present invention also provides a kind of clock synchronous processing unit, comprising:
First acquisition module, for obtaining system Time of Day information;
Information generating module, for generating the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to described system Time of Day information and particular system frame information, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
First sending module, for sending the idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine to Long Term Evolution backhaul subscriber equipment.
The embodiment of the present invention also provides another kind of clock synchronous processing unit, comprising:
Receiver module, the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame is sent for receiving Long Term Evolution backhaul base station, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Second acquisition module, synchronous for line time of going forward side by side according to the described Time of Day Information Acquisition System Time of Day information of eating dishes without rice or wine corresponding with particular system frame.
Present invention also offers a kind of communication system, comprise Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment, described Long Term Evolution backhaul base station comprises above-mentioned clock synchronous processing unit, and described Long Term Evolution backhaul subscriber equipment comprises above-mentioned clock synchronous processing unit.
The clock synchronous processing method of the embodiment of the present invention, device and communication system, above-mentioned Time of Day information of eating dishes without rice or wine is sent to Long Term Evolution backhaul subscriber equipment by idle message, to recover system Time of Day information by Long Term Evolution backhaul subscriber equipment, and user side transceiver can be sent further to, user side transceiver in the present embodiment refers to that the Long Term Evolution backhaul base station that needs be connected with Long Term Evolution backhaul subscriber equipment provides the base station of backhaul, realize when using LTE to do base station backhaul, for telepoint base station provides high-precision system Time of Day information, realize clock synchronous.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of clock synchronous processing method embodiment one of the present invention;
Fig. 2 is System Frame Number change schematic diagram in the embodiment of the present invention;
Fig. 3 is the message format schematic diagram of Time of Day pass-along message in the embodiment of the present invention;
Fig. 4 is the structural representation of backhaul base station in the embodiment of the present invention;
Fig. 5 is that in the embodiment of the present invention, RRC signaling message transmits schematic diagram;
Fig. 6 is the schematic flow sheet of clock synchronous processing method embodiment two of the present invention;
Fig. 7 is the structural representation of LTE backhaul UE in the embodiment of the present invention;
Fig. 8 is the schematic flow sheet of the present invention's specific embodiment;
Fig. 9 is the structural representation of clock synchronous processing unit embodiment one of the present invention;
Figure 10 is the structural representation of middle information generating module embodiment illustrated in fig. 9;
Figure 11 is the structural representation of clock synchronous processing unit embodiment two of the present invention;
Figure 12 is the structural representation of clock synchronous processing unit embodiment three of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of clock synchronous processing method, Fig. 1 is the schematic flow sheet of clock synchronous processing method embodiment one of the present invention, and as shown in Figure 1, for LTE backhaul base station side, the method comprises the steps:
Step 101, acquisition system Time of Day information; This step is when utilizing LTE to do base station backhaul, obtains system Time of Day information, can be denoted as Tod_sys by LTE backhaul base station from clock source or master clock;
Step 102, the eat dishes without rice or wine Time of Day information corresponding with particular system frame is generated according to said system Time of Day information and particular system frame information, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment, in this step, the above-mentioned system Time of Day information Tod_sys got is converted to the eat dishes without rice or wine Time of Day information Tod_tx corresponding with particular system frame transmitted on eating dishes without rice or wine by LTE backhaul base station, by frame number (the System Frame Number of system Time of Day information and system-frame, hereinafter referred to as: SFN) connect transmission,
Step 103, send the idle message comprising described the eat dishes without rice or wine Time of Day information corresponding with particular system frame to Long Term Evolution backhaul subscriber equipment.Generating in above-mentioned steps eats dishes without rice or wine on the basis of Time of Day information, above-mentioned Time of Day information of eating dishes without rice or wine is sent to Long Term Evolution backhaul subscriber equipment by idle message, to recover system Time of Day information by Long Term Evolution backhaul subscriber equipment, and user side transceiver can be sent further to, user side transceiver in the present embodiment refers to that the Long Term Evolution backhaul base station that needs be connected with Long Term Evolution backhaul subscriber equipment provides the base station of backhaul, Long Term Evolution backhaul subscriber equipment and to need Long Term Evolution backhaul base station to provide between the base station of backhaul can be wired connection, this embodiment can realize when LTE does base station backhaul, for telepoint base station provides high-precision system Time of Day information, realize clock synchronous.
In the above embodiment of the present invention, LTE backhaul base station needs the Time of Day information Tod_tx that eats dishes without rice or wine according to local sequential relationship, the system Time of Day information Tod_sys obtained from clock source or master clock being converted to the transmission on eating dishes without rice or wine in addition, main method is associated with the frame number SFN of system-frame Time of Day information, on eating dishes without rice or wine, transmit the Time of Day information corresponding with specific SFN.
The Time of Day information of eating dishes without rice or wine that eating dishes without rice or wine between LTE backhaul base station and LTE backhaul UE is transmitted, it can be the system Time of Day value of particular system frame initial time, or to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, can also its dependent variable of relation between characterization system Time of Day value and particular system frame.
Concrete, when Time of Day information of eating dishes without rice or wine is the system Time of Day value of particular system frame initial time, and particular system frame is preset configuration between above-mentioned LTE backhaul base station and LTE backhaul UE, namely which particular system frame corresponding to the system Time of Day value that can both clearly transmit of LTE backhaul base station and LTE backhaul UE is, can be determined by LTE backhaul base station, and inform LTE backhaul UE separately through idle message, or be the frame number that LTE backhaul base station and LTE backhaul UE configure above-mentioned particular system frame by system.Such as shown in Fig. 2, each SFN cycle period comprises 1024 system-frame, the corresponding system-frame pulse of each system-frame, the duration of each system-frame pulse is 10ms, such as the system Time of Day value that in this cycle period, first (or other ad-hoc locations preset) pulse is corresponding can be transmitted to LTE backhaul UE in LTE backhaul base station, represent with TOD_tx, TOD_tx can each SFN cycle period transmission primaries, also can repeat to transmit repeatedly, transmission is not fixed opportunity, but must be positioned at this SFN cycle period duration.In this embodiment, it can be specifically according to system Time of Day information that LTE backhaul base station generates according to system Time of Day information Time of Day information of eating dishes without rice or wine, current system frame initial time, the system Time of Day value of the particular system frame initial time that the frame number of current system frame and the frame number of described particular system frame obtain, specifically as shown in Figure 2, the system Time of Day value of current system frame initial time is obtained according to the initial time value of current time value (i.e. system Time of Day information) and current system frame, then can according to the difference of the frame number of the frame number of current system frame and particular system frame, the system Time of Day value of particular system frame can be got.
On LTE backhaul base station and LTE backhaul UE, the frame number of particular system frame is configured in advance in above-described embodiment, it can also be another mode, namely do not need pre-configured, but by LTE backhaul base station the frame number of particular system frame and system Time of Day value be together carried in idle message and send to LTE backhaul UE.Namely above-mentioned Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and the system Time of Day value of described particular system frame initial time, in this embodiment, LTE backhaul base station also needs to generate according to system Time of Day information the system Time of Day value that Time of Day information of eating dishes without rice or wine can be specifically the particular system frame initial time obtained according to the frame number of system Time of Day information, current system frame initial time, current system frame and the frame number of described particular system frame.
Also have a kind of execution mode in addition, namely above-mentioned Time of Day information of eating dishes without rice or wine comprises cycle period number corresponding to the frame number of particular system frame, or the cycle period number that the frame number both having comprised particular system frame is corresponding, comprises again the frame number of particular system frame.Above-mentioned cycle period number is to the number of cycles that System Frame Number during particular system frame has circulated from System Frame Number initialization time.Concrete, the SFN of LTE base station can according to following formulae discovery:
SFN＝{time}mod{period(SFN)}
Wherein time represents the relative time of the initial time to particular system frame from SFN initial runtime (such as arranging SFN=0 on January 6, the 1980 at 00:00:00GMT time), and unit is 10ms; And period (SFN) represents the cycle period of the frame number of system-frame, be set to 1024 (corresponding relative time is 1024 10ms), and the span of SFN is: 0-1023.
According to calculating formula above, there is a minimum value to be the Integer N of 0, following formula set up:
time＝SFN+1024*N
Therefore, can in each SFN cycle period (comprising 1024 system-frame), N value corresponding to particular system frame is transmitted to LTE backhaul UE in LTE backhaul base station, represents with Tod_tx.Above-mentioned N value represents from System Frame Number initialization time to the number of cycles that System Frame Number during particular system frame has circulated, relative to the initialization time of SFN, time corresponding to N number of cycle is 1024*N 10ms, add the frame number SFN of particular system frame, time represents the relative time of particular system frame initial time relative to SFN initial runtime.The value of corresponding TOD is time/100, and unit is s.Namely make:
TOD={SFN+1024*N}/100 or N={TOD*100}/1024
In the present embodiment, in each SFN cycle period, Tod_tx is transmission primaries at least, can repeat transmission repeatedly, the opportunity of transmission does not need to fix, but need be positioned at this default SFN cycle duration.
In addition, for the configuration of the frame number of particular system frame, namely can be configure between described Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment in advance, now above-mentioned to generate according to system Time of Day information Time of Day information of eating dishes without rice or wine can be obtain cycle period number corresponding to the frame number of described particular system frame according to the frame number cycle period of described system Time of Day information, system-frame initial time and system-frame.
Can not also be configured in advance in addition, but in the idle message sent to LTE backhaul UE in LTE backhaul base station, carry the frame number of particular system frame, namely Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and the cycle period number that the frame number of described particular system frame is corresponding, the eat dishes without rice or wine Time of Day information corresponding with particular system frame is generated according to system Time of Day information and particular system frame information described in this embodiment, at least comprise: according to described system Time of Day information, the cycle period of the frame number of current system frame initial time and system-frame obtain described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
The form of several Time of Day information of eating dishes without rice or wine is given in the above embodiment of the present invention, all can be carried in idle message and be sent, this idle message can be the message transmitted between LTE backhaul base station and LTE backhaul UE, for the type of idle message, can be higher layer message, also can be some existing signaling messages.
For the situation using higher layer message, its advantage does not affect existing flow process of eating dishes without rice or wine, namely a new information can be defined to carry TOD information, namely according to described in Time of Day Information encapsulation of eating dishes without rice or wine generate Time of Day pass-along message, this Time of Day pass-along message comprises message header and payload field, it is Time of Day pass-along message that its message header is used for the sign type that disappears, and Time of Day information of eating dishes without rice or wine is arranged in described payload field.Concrete message format can adopt time stamp form, specifically can be as shown in Figure 3.
Backhaul base station obtains system Time of Day information Tod_sys from external clock reference, frame time block generates according to local sequential relationship and Tod_sys the Time of Day information Tod_tx that eats dishes without rice or wine, message produces the Tod_tx generation idle message that entity generates according to frame time block, and this message encapsulation is become IP packet, on eating dishes without rice or wine, be handed down to LTE backhaul UE by sending module together with other data service.Wherein, the IP source address of the IP bag of carrying TOD information can be the address of OAM server-assignment, and destination address can be the IP address that when setting up default bearing, PDN-GW distributes to backhaul UE, specifically can be as shown in Figure 4.
In addition, can also be utilize existing RRC signaling, such as RRC reallocation message transmission is eated dishes without rice or wine Time of Day information, the wireless heterogeneous networks of Time of Day information of eating dishes without rice or wine described in namely comprising to the transmission of Long Term Evolution backhaul subscriber equipment connects reallocation message, and this Time of Day Information encapsulation of eating dishes without rice or wine connects in the extension field of reallocation message at above-mentioned wireless heterogeneous networks.The concrete existing RRC that can utilize connects reconfiguration message (RRCConnection Reconfiguration message), increase the IETimeofDay_RUE carrying TOD information within the message, when not needing transmission TOD information, RRC connects reconfiguration message can not comprise TimeofDay_RUE, with saving resource.
The form of an increase special RRC signaling message can also be adopted in addition, carry TOD information specially.As shown in Figure 5, send to LTE backhaul UE by LTE backhaul base station, in message, carry the information relevant to TOD.After corresponding LTE backhaul UE receives this message, read the TOD relevant information in message, then do follow-up synchronous process.
Its specific implementation is as follows, in downlink dedicated control channel message (DL-DCCH-Message), increase the definition of a special RRC signaling message: RUE Information Tod, above-mentioned DL-DCCH-Message kind of message is that some are sent the set of RRC information on descending DCCH logic channel to UE by network side.
Can carry the TOD information of 90bit in the RRC signaling message UE Information Tod of above-mentioned new definition, the size of TOD information load can change to some extent according to the difference of the TOD information of upper transmission of eating dishes without rice or wine in addition.
Also has a kind of embodiment in addition, namely by increasing dedicated system block of information (System InformationBlock, hereinafter referred to as: the SIB) mode of message, is sent the dedicated system block of information message comprising Time of Day information of eating dishes without rice or wine to Long Term Evolution backhaul subscriber equipment by LTE backhaul base station.
Concrete for system message of the prior art, system message can comprise Master Information Block (MasterInformation Block, hereinafter referred to as: MIB) and SIB, according to its effect and the difference sending frequent degree, can organize RRC information structure, form different SIB.The defined system message of current agreement is as follows:
MIB, for communicating downlink bandwidth, system frame number SFN and PHICH configuration information;
SIB-1, for transmitting community access information and SIB (except SIB-1) schedule information;
SIB-2, for transmitting the wireless public resource configuration information of all UE;
SIB-3 ~ SIB-8, for transmitting cell reselection information;
SIB-9, for transmitting Home eNodeB mark (Home eNB Identifier, i.e. HeNB ID);
SIB-10 ~ SIB-12, for transmitting the information of ETWS and CMAS notice;
SIB-13, for transmitting the relevant information of MBMS control message.
Increase a SIB-14 message in the embodiment of the present invention and carry TOD relevant information, concrete needs amendment system information (SystemInformation message) and SIB-1 message (SystemInformation Block Type1 message), increase the instruction of SIB-14 message wherein, SIB-14 message comprises the TOD information of 90bit in addition, and the size of TOD information load can change to some extent according to the difference of the TOD information of upper transmission of eating dishes without rice or wine.Update cycle for SIB-14 processes, and can be to arrange a distinctive discontinuous reception of UE (UE Specific DRX (Discontinuous Reception)) parameter for LTE backhaul UE, and process is as follows:
The DRX cycle length that oneself is expected is issued the MME of core network side by LTE backhaul UE by NAS message (Tracking Area Update or Attach message), MME accepts this recommended value, and by the UE Specific DRX parameter configuration relevant to backhaul UE to eNB.
After LTE backhaul UE receives SIB-2 message, relatively the value of UE Specific DRX and default paging cycle (default Paging Cycle), selects less value as the DRX cycle length (DRX cycle length) of oneself.It is relevant to the DRX cycle length of LTE backhaul UE that TOD information issues the cycle, and LTE backhaul UE can arrange oneself DRX cycle length as required flexibly.
In the above embodiment of the present invention, LTE backhaul base station sends to LTE backhaul UE by idle message Time of Day information of eating dishes without rice or wine, LTE backhaul UE receive above-mentioned comprising eat dishes without rice or wine Time of Day information idle message after, according to Time of Day Information Acquisition System Time of Day information of eating dishes without rice or wine.Concrete Fig. 6 is the schematic flow sheet of clock synchronous processing method embodiment two of the present invention, and the method comprises:
Step 201, reception Long Term Evolution backhaul base station send the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Step 202, line time of going forward side by side according to the described Time of Day Information Acquisition System Time of Day information of eating dishes without rice or wine corresponding with particular system frame are synchronous.
According to the above-mentioned method for LTE backhaul base station side, the Time of Day information of eating dishes without rice or wine of carrying in the idle message that the LTE backhaul UE in the present embodiment receives has various ways, specifically can see the specification in above-described embodiment, the type of idle message also has multiple in addition, also can see the explanation in the various embodiments described above.
Concrete can be as shown in Figure 7, LTE backhaul UE comprises TOD receiver module and TOD recovers module, wherein TOD receiver module is resolved the data message of carrying TOD information or signaling message, extract TOD information of eating dishes without rice or wine, then the TOD information of eating dishes without rice or wine exported according to local sequential relationship and TOD receiver module by TOD recovery module, (pulse per second, hereinafter referred to as PPS) information to recover system Time of Day information and pulse per second (PPS).In addition, because the transmission of idle message has time delay, likely backhaul UE receives system-frame corresponding when eating dishes without rice or wine Time of Day information system-frame corresponding to Time of Day information of relatively eating dishes without rice or wine and has spanned a SFN cycle period.The TOD receiver module of backhaul UE is responsible for judging this situation, and revises.Concrete, comprise the system Time of Day value of particular system frame initial time in Time of Day information of eating dishes without rice or wine, and particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or comprise the frame number of particular system frame, and the system Time of Day value of described particular system frame initial time.The present embodiment comprises further to be needed to revise, and namely comprises:
When frame number cycle period or not same system-frame of the frame number of described particular system frame and the frame number of current system frame, the system Time of Day value of the described particular system frame initial time received is revised.
In addition, for Time of Day information of eating dishes without rice or wine, can also be comprise to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame in Time of Day information of eating dishes without rice or wine, and described particular system frame be pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, the method also comprises:
When the described number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame is not the number of cycles circulated to the frame number of current time system-frame from the frame number initialization time of system-frame, the number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame described in receiving is revised.
What above-mentioned correction was concrete can be according to comparing this Time of Day information of eating dishes without rice or wine received and the front Time of Day information of eating dishes without rice or wine once received, and the frame number of the more current SFN particular system frame corresponding with Time of Day information of eating dishes without rice or wine judges whether to need to revise Time of Day information of eating dishes without rice or wine.The revised day information Tod_rx that eats dishes without rice or wine is exported to TOD and recovers module by TOD receiver module.
Fig. 8 provides a kind of method revised Time of Day information of eating dishes without rice or wine, and concrete comprises the steps:
Step 301, LTE backhaul UE receive idle message, and obtain the Time of Day information of eating dishes without rice or wine of wherein carrying;
Step 302, judge whether be first time receive the Time of Day information Tod_tx that eats dishes without rice or wine, in this way then perform step 303, otherwise perform step 304;
Step 303, judge whether current SFN is greater than the frame number of particular system frame corresponding to Tod_tx, is perform step 305, otherwise perform step 307;
Step 304, judge whether the value of the Tod_rx of current record equals the value of Tod_tx, if then perform step 305, otherwise perform step 306, this step is the situation for transmitting repeatedly Tod_tx in a SFN cycle period;
Step 305, by the front value assignment once revising the Tod_rx obtained to Tod_tx;
Step 306, SFN when judging the Tod_tx once received before whether current SFN is greater than, if then perform step 305, otherwise perform step 307;
Step 307, Tod_tx to be revised, namely the frame number of the particular system frame in Time of Day information of eating dishes without rice or wine with the SFN received when eating dishes without rice or wine Time of Day information not at same SFN cycle period time, need to revise Tod_tx, the TOD relevant information in Tod_tx is modified to TOD information Tod_rx corresponding to particular system frame in current period.Particularly for the situation of the system Time of Day value of transmission particular system frame initial time, by the TOD+10.24s in the TOD=Tod_tx in Tod_rx, and be the situation of the cycle period number N that the frame number of particular system frame is corresponding for the Time of Day information of upper transmission of eating dishes without rice or wine, the N=N+1 in Tod_rx.
By revising the Time of Day information of eating dishes without rice or wine received in the above embodiment of the present invention, obtaining revised Time of Day information, the i.e. Tod_rx of eating dishes without rice or wine, and recovering system Time of Day information corresponding to current initial time, representing with Tod_rcvr:
Tod_rcvr＝Tod_rx+Delta_SFN/100s
Wherein Delta_SFN represents frame number and the difference of the frame number of particular system frame in this cycle of current system frame, because each system-frame pulse period is 10ms, therefore its time difference is Delta_SFN/100s, on the basis obtaining above-mentioned Tod_rcvr, according to Tod_rcvr and local sequential relationship, system Time of Day and PPS information can be recovered.
In addition for the situation of cycle period number N corresponding to the frame number transmitting particular system frame on eating dishes without rice or wine, to the number of cycles that the frame number of current time system-frame has circulated from the frame number initialization time of system-frame, now, Tod_rcvr=1024*N+SFN, wherein SFN is the frame number of current system frame.On the basis of the above, can further according to Tod_rcvr and local sequential relationship, recovery system Time of Day and PPS information, synchronous with what realize between LTE backhaul UE and LTE backhaul base station.
After LTE backhaul UE obtains above-mentioned system Time of Day information, the telepoint base station equipment B TS of wired connection with it can be passed to, concrete can be connected by the FE/GE set up between LTE backhaul UE and BTS, can by the mode transmission system Time of Day information of 1PPS+TOD between LTE backhaul UE and BTS, if support 1588 agreements between LTE backhaul UE and BTS, also TOD can be transmitted to BTS by 1588 event messages.
The embodiment of the present invention additionally provides a kind of clock synchronous processing unit, Fig. 9 is the structural representation of clock synchronous processing unit embodiment one of the present invention, this clock synchronous processing unit can be arranged in LTE backhaul base station, as shown in Figure 9, this device comprises the first acquisition module 11, information generating module 12 and the first sending module 13, wherein the first acquisition module 11 is for obtaining system Time of Day information; Information generating module 12 is for generating the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to described system Time of Day information and particular system frame information, and described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; First sending module 13 is for sending the idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine to Long Term Evolution backhaul subscriber equipment.
The clock synchronous processing unit that the above embodiment of the present invention provides, by obtaining system Time of Day information, and be translated into the Time of Day information of eating dishes without rice or wine transmitted on eating dishes without rice or wine, the transmission of system Time of Day can be realized, and then make when using LTE base station to do backhaul, in system, absolute time is synchronous.
In specific embodiments of the invention, if the frame number of system Time of Day and particular system frame connects by Time of Day information spinner of eating dishes without rice or wine wherein, Time of Day information of eating dishes without rice or wine as described above can comprise the system Time of Day value of particular system frame initial time, and particular system frame now can be pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and the system Time of Day value of particular system frame initial time, namely do not perform pre-configured, but send with the frame number of particular system frame simultaneously, as shown in Figure 10, information generating module 12 wherein can comprise first information generation unit 121, and this first information generation unit 121 is for obtaining the system Time of Day value of described particular system frame initial time according to the frame number of described system Time of Day information, current system frame initial time, current system frame and the frame number of described particular system frame.
In addition, above-mentioned Time of Day information of eating dishes without rice or wine comprises to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, and particular system frame wherein can be pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, the i.e. frame number of not pre-configured particular system frame, but the number of cycles that itself and above-mentioned frame number have circulated is sent simultaneously.In this case, information generating module 12 can comprise the second information generating unit 122, this second information generating unit be used for according to the cycle period of the frame number of system Time of Day information, current system frame initial time and system-frame obtain described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
For the mode transmitting Time of Day information of eating dishes without rice or wine between LTE backhaul base station and LTE backhaul UE, can be by the mode of higher layer message or the mode of carrying in existing signaling message, such as, when being transmitted by the mode of higher layer message, as shown in Figure 10, above-mentioned information generating module 12 comprises message encapsulation unit 123, this unit is used for Time of Day Information encapsulation generation Time of Day pass-along message of eating dishes without rice or wine described in basis, described Time of Day pass-along message encapsulation comprises message header and payload field, described message header is for characterizing the type of this Time of Day pass-along message, described Time of Day information of eating dishes without rice or wine is arranged in described payload field.
Corresponding with above-described embodiment, present invention also offers a kind of clock synchronous processing unit be arranged in LTE backhaul UE, Figure 11 is the structural representation of clock synchronous processing unit embodiment two of the present invention, as shown in figure 11, this device comprises receiver module 21 and the second acquisition module 22, wherein receiver module 21 sends for receiving Long Term Evolution backhaul base station the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment, second acquisition module 22 is synchronous for line time of going forward side by side according to the described Time of Day Information Acquisition System Time of Day information of eating dishes without rice or wine corresponding with particular system frame.
The Time of Day information of eating dishes without rice or wine received is converted to system time information by the clock synchronous processing unit in the present embodiment in LTE backhaul UE, can realize the synchronous of system clock when LTE base station does backhaul.
In the particular embodiment, the above-mentioned Time of Day information of eating dishes without rice or wine transmitted on eating dishes without rice or wine, can be that Time of Day information of eating dishes without rice or wine is associated with particular system frame, concrete above-mentioned Time of Day information of eating dishes without rice or wine can be the system Time of Day value comprising particular system frame initial time, or comprises from System Frame Number initialization time to the number of cycles that System Frame Number during particular system frame has circulated.Due to the time delay that message is transmitted on eating dishes without rice or wine, the transmittance process of the above-mentioned idle message of possibility has spanned a SFN cycle period, be the particular system frame of a upper SFN cycle period during Time of Day information corresponding to the particular system frame namely received, now need temporal information correction of eating dishes without rice or wine.
Concrete, above-mentioned Time of Day information of eating dishes without rice or wine comprises the system Time of Day value of particular system frame initial time, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame, and the system Time of Day value of described particular system frame initial time, as shown in figure 12, said apparatus comprises the first correcting module 23 further, this module is used for, when frame number cycle period or not same system-frame of the frame number of described particular system frame and the frame number of current system frame, revising the system Time of Day value of the described particular system frame initial time of reception.
Or above-mentioned Time of Day information of eating dishes without rice or wine comprises to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment, or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame, and described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated, in this situation, said apparatus also comprises: the second correcting module 24, this module is used for when the described number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame is not the number of cycles circulated to the frame number of current time system-frame from the frame number initialization time of system-frame, the number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame described in reception is revised.
Further, in embodiments of the present invention, clock synchronous processing unit can also comprise the second sending module 25, this second sending module 25 is for sending the notification message comprising said system Time of Day information to user side transceiver, the user side equipment in the present embodiment refers to that the Long Term Evolution backhaul base station that needs be connected with Long Term Evolution backhaul subscriber equipment provides the base station of backhaul.
The embodiment of the present invention additionally provides a kind of communication system, comprise Long Term Evolution backhaul base station, Long Term Evolution backhaul subscriber equipment and provide the base station of backhaul with the Long Term Evolution backhaul base station that needs of Long Term Evolution backhaul subscriber equipment wired connection, Long Term Evolution backhaul base station wherein comprises above-mentioned clock synchronous processing unit, and described Long Term Evolution backhaul subscriber equipment comprises above-mentioned clock synchronous processing unit.In the technical scheme that above-described embodiment provides, the situation of backhaul is made for LTE base station, by the system Time of Day information of acquisition being converted to Time of Day information of eating dishes without rice or wine in LTE backhaul base station, and passed to LTE backhaul UE, recovered by LTE backhaul UE, acquisition system Time of Day information, and pass to the telepoint base station be attached thereto, the Absolute Time Synchronization of telepoint base station can be realized.And the above-mentioned method that system Time of Day information is associated with the frame number of particular system frame, the requirement to transmission real-time can be reduced, and carried by higher layer message or existing signaling and transmit Time of Day information of eating dishes without rice or wine, effectively can reduce the impact on flow process of eating dishes without rice or wine.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (20)
1. a sending method for system Time of Day information, is characterized in that, comprising:
Acquisition system Time of Day information;
Generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to described system Time of Day information and particular system frame information, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
The idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine is sent to Long Term Evolution backhaul subscriber equipment.
2. the sending method of system Time of Day information according to claim 1, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises the system Time of Day value of particular system frame initial time, and described particular system frame is pre-configured between described Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Describedly generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to system Time of Day information and particular system frame information, at least comprise:
The system Time of Day value of described particular system frame initial time is obtained according to the frame number of described system Time of Day information, current system frame initial time, current system frame and the frame number of described particular system frame.
3. the sending method of system Time of Day information according to claim 1, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and the system Time of Day value of described particular system frame initial time, describedly generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to system Time of Day information and particular system frame information, at least comprise:
The system Time of Day value of described particular system frame initial time is obtained according to the frame number of described system Time of Day information, current system frame initial time, current system frame and the frame number of described particular system frame.
4. the sending method of system Time of Day information according to claim 1, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, and described particular system frame is pre-configured between described Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Describedly generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to system Time of Day information and particular system frame information, at least comprise:
According to the cycle period of the frame number of described system Time of Day information, current system frame initial time and system-frame obtain described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
5. the sending method of system Time of Day information according to claim 1, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises the frame number of particular system frame, and to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, describedly generate the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to system Time of Day information and particular system frame information, at least comprise:
According to the cycle period of the frame number of described system Time of Day information, current system frame initial time and system-frame obtain described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
6. the sending method of system Time of Day information according to claim 1, is characterized in that, described to Long Term Evolution backhaul subscriber equipment send comprise described in the eat dishes without rice or wine idle message of Time of Day information comprise:
Time of Day pass-along message is generated according to described Time of Day Information encapsulation of eating dishes without rice or wine, described Time of Day pass-along message comprises message header and payload field, described message header for characterizing the type of this Time of Day pass-along message, described in Time of Day information of eating dishes without rice or wine be arranged in described payload field;
The idle message comprising described Time of Day pass-along message is sent to Long Term Evolution backhaul subscriber equipment.
7. the sending method of system Time of Day information according to claim 1, is characterized in that, described to Long Term Evolution backhaul subscriber equipment send comprise described in the eat dishes without rice or wine idle message of Time of Day information comprise:
To Long Term Evolution backhaul subscriber equipment send comprise described in the eat dishes without rice or wine wireless heterogeneous networks of Time of Day information connect reallocation message, described in Time of Day Information encapsulation of eating dishes without rice or wine connect at described wireless heterogeneous networks in the extension field of reallocation message; Or
The dedicated radio resources control protocol signaling message of Time of Day information of eating dishes without rice or wine described in comprising to the transmission of Long Term Evolution backhaul subscriber equipment; Or
The dedicated system block of information message of Time of Day information of eating dishes without rice or wine described in comprising to the transmission of Long Term Evolution backhaul subscriber equipment.
8. the sending method of system Time of Day information according to claim 1, is characterized in that, also comprise:
Long Term Evolution backhaul subscriber equipment receives the idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine;
Long Term Evolution backhaul subscriber equipment is synchronous according to described the eat dishes without rice or wine Time of Day Information Acquisition System Time of Day information corresponding with particular system frame line time of going forward side by side.
9. a clock synchronous processing method, is characterized in that, comprising:
Receive Long Term Evolution backhaul base station and send the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Synchronous according to described the eat dishes without rice or wine Time of Day Information Acquisition System Time of Day information corresponding with particular system frame line time of going forward side by side.
10. clock synchronous processing method according to claim 9, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises the system Time of Day value of particular system frame initial time, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame and the system Time of Day value of described particular system frame initial time;
Or described in Time of Day information of eating dishes without rice or wine comprise to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame, and described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
11. clock synchronous processing methods according to claim 10, it is characterized in that, described method also comprises:
When frame number cycle period or not same system-frame of the frame number of described particular system frame and the frame number of current system frame, the system Time of Day value of the described particular system frame initial time received is revised;
Or when the described number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame is not the number of cycles circulated to the frame number of current time system-frame from the frame number initialization time of system-frame, the number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame described in receiving is revised.
12. clock synchronous processing methods according to claim 9, is characterized in that, also comprise:
The notification message comprising described system Time of Day information is sent to user side transceiver.
The dispensing device of 13. 1 kinds of system Time of Day information, is characterized in that, comprising:
First acquisition module, for obtaining system Time of Day information;
Information generating module, for generating the eat dishes without rice or wine Time of Day information corresponding with particular system frame according to described system Time of Day information and particular system frame information, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
First sending module, for sending the idle message comprising described corresponding with particular system frame Time of Day information of eating dishes without rice or wine to Long Term Evolution backhaul subscriber equipment.
The dispensing device of 14. system Time of Day information according to claim 13, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises the system Time of Day value of particular system frame initial time, and described particular system frame is pre-configured between described Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame and the system Time of Day value of described particular system frame initial time, described information generating module comprises:
First information generation unit, for obtaining the system Time of Day value of described particular system frame initial time according to the frame number of described system Time of Day information, current system frame initial time, current system frame and the frame number of described particular system frame.
The dispensing device of 15. system Time of Day information according to claim 13, it is characterized in that, described Time of Day information of eating dishes without rice or wine comprises to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame, and described particular system frame is pre-configured between described Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or described in Time of Day information of eating dishes without rice or wine comprise the frame number of particular system frame, and described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated, described information generating module comprises:
Second information generating unit, the cycle period for the frame number according to described system Time of Day information, current system frame initial time and system-frame obtain described from the frame number initialization time of system-frame to the number of cycles that the frame number of system-frame during particular system frame has circulated.
The dispensing device of 16. system Time of Day information according to claim 13, it is characterized in that, described information generating module comprises:
Message encapsulation unit, for eating dishes without rice or wine described in basis, Time of Day Information encapsulation generates Time of Day pass-along message, described Time of Day pass-along message comprises message header and payload field, described message header for characterizing the type of this Time of Day pass-along message, described in Time of Day information of eating dishes without rice or wine be arranged in described payload field.
17. 1 kinds of clock synchronous processing unit, is characterized in that, comprising:
Receiver module, the idle message comprising the eat dishes without rice or wine Time of Day information corresponding with particular system frame is sent for receiving Long Term Evolution backhaul base station, described the eat dishes without rice or wine Time of Day information corresponding with particular system frame is that Long Term Evolution backhaul base station generates according to system Time of Day information and particular system frame information, and for transmission system Time of Day information between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment;
Second acquisition module, synchronous for line time of going forward side by side according to the described Time of Day Information Acquisition System Time of Day information of eating dishes without rice or wine corresponding with particular system frame.
18. clock synchronous processing unit according to claim 17, it is characterized in that, comprise the system Time of Day value of particular system frame initial time in described Time of Day information of eating dishes without rice or wine, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or the frame number of particular system frame is comprised in described Time of Day information of eating dishes without rice or wine, and during the system Time of Day value of described particular system frame initial time, described device also comprises:
First correcting module, for when frame number cycle period or not same system-frame of the frame number of described particular system frame and the frame number of current system frame, revises the system Time of Day value of the described particular system frame initial time received;
Or, comprise to the number of cycles that the frame number of system-frame during particular system frame has circulated from the frame number initialization time of system-frame in described Time of Day information of eating dishes without rice or wine, and described particular system frame is pre-configured between Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment; Or comprise the frame number of particular system frame in described Time of Day information of eating dishes without rice or wine, and described circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame number of cycles time, described device also comprises:
Second correcting module, during for not being the number of cycles circulated to the frame number of current time system-frame from the frame number initialization time of system-frame in the described number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame, the number of cycles circulated to the frame number of system-frame during particular system frame from the frame number initialization time of system-frame described in receiving is revised.
19. clock synchronous processing unit according to claim 17, is characterized in that, also comprise:
Second sending module, for sending the notification message comprising described system Time of Day information to user side transceiver.
20. 1 kinds of communication systems, comprise Long Term Evolution backhaul base station and Long Term Evolution backhaul subscriber equipment, it is characterized in that, described Long Term Evolution backhaul base station comprises the dispensing device of the arbitrary described system Time of Day information of claim 13-16, and described Long Term Evolution backhaul subscriber equipment comprises the arbitrary described clock synchronous processing unit of claim 17-19.
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| PCT/CN2012/074755 WO2012146187A1 (en) | 2011-04-26 | 2012-04-26 | Clock synchronization processing method, device and communication system |
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| CN101400123A (en) * | 2007-09-28 | 2009-04-01 | 展讯通信（上海）有限公司 | Method and system for obtaining GPS standard time by terminal in synchronous communication system |
| WO2010033380A1 (en) * | 2008-09-17 | 2010-03-25 | Qualcomm Incorporated | Methods and apparatus for frame number synchronization in wireless communication networks |
| CN101877908A (en) * | 2009-04-28 | 2010-11-03 | 中兴通讯股份有限公司 | Base stations and method for synchronously scheduling resources among same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102761951A (en) | 2012-10-31 |
| WO2012146187A1 (en) | 2012-11-01 |
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