CN105812306B - The communication means and device of down-going synchronous frame in wireless communication system - Google Patents
The communication means and device of down-going synchronous frame in wireless communication system Download PDFInfo
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- CN105812306B CN105812306B CN201410837431.3A CN201410837431A CN105812306B CN 105812306 B CN105812306 B CN 105812306B CN 201410837431 A CN201410837431 A CN 201410837431A CN 105812306 B CN105812306 B CN 105812306B
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Abstract
This application discloses the communication means and device of down-going synchronous frame in a kind of wireless communication system, comprising: specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource；Downlink heartbeat signal is sent to user terminal using the downlink heartbeat resource；The user terminal is after receiving the down-going synchronous frame, and parsing receives the downlink heartbeat signal from the downlink heartbeat resource therein.Using the present invention, the expense of physical resource can be reduced in heartbeat detection, improves the efficiency of transmission of wireless communication system.
Description
Technical field
This application involves a kind of communication means of down-going synchronous frame in wireless communication technique more particularly to wireless communication system
And device.
Background technique
In a wireless communication system, heartbeat detection technology be wireless communication systme synchronization and fault detection key technology it
One.Heartbeat detection technology is mainly to pass through the state for periodically sending detection information detection Correspondent Node, to realize work
State synchronized or fault detection.In general wireless communication system, heartbeat detection be all based on User Datagram Protocol (UDP,
User Datagram Protocol), transmission control protocol/Internet Protocol (TCP/IP, Transmission
Control Protocol/Internet Protocol), it is commonly used in detection device connection or equipment fault situation.
In existing wireless communication technique, the main flow of common heartbeat detection technology are as follows: from host periodically to tested
Equipment, process or other network elements send simple communication packet, if not receiving other side's response, judgement pair in section at the appointed time
Square operation irregularity.The information that tested equipment, process and other network elements are replied is referred to as " heartbeat packet " or " heartbeat message ".
But rises the prior art and have the disadvantage in that
In wireless communication system, based on UDP, ICP/IP protocol heartbeat detection technology used in " heartbeat packet " from base station
(eNodeB) when network element is sent to user terminal (UE) network element, " heartbeat packet " needs to increase UDP or TCP/IP and medium is visited
It asks control layer (MAC, Media Access Control) head, then eNodeB network element or UE net is sent to by physical layer transmission
Member.
When " heartbeat packet " that increases UDP or TCP/IP and MAC header passes through physical layer transmission, since its physics provides
Source expense is big, therefore reduces the efficiency of transmission of wireless communication system.Further, for a kind of narrow band width wireless communication systems
For, the expense of this heartbeat detection technology may will affect the normal operation of communication system.
Summary of the invention
In view of this, the main object of the present invention is to provide a kind of communication means of down-going synchronous frame in wireless communication system
And device improves the efficiency of transmission of wireless communication system to reduce the expense of physical resource in heartbeat detection.
The technical scheme of the present invention is realized as follows:
The communication means of down-going synchronous frame in a kind of wireless communication system, comprising:
Specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource；
Downlink heartbeat signal is sent to user terminal using the downlink heartbeat resource；
The user terminal is parsed from the downlink heartbeat resource therein and is connect after receiving the down-going synchronous frame
Receive the downlink heartbeat signal.
Preferably, described that specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource, it specifically includes:
The down time-frequency resource of half is distributed in down-going synchronous frame as downlink heartbeat resource.
Preferably, the down time-frequency resource that half is distributed in down-going synchronous frame is as downlink heartbeat resource, specifically
Including: includes 13 orthogonal frequency division multiplexing ODFM symbols in the downlink resource in the down-going synchronous frame, wherein occupying first 6
ODFM symbol is as downlink heartbeat resource, and 7 ODFM symbols are as down-going synchronous resource after occupancy, wherein preceding 6 ODFM
The time that symbol occupies is identical with the time that rear 7 ODFM symbols occupy.
Preferably, in preceding 6 ODFM symbols, there are 13 dot cycle prefixes before each OFDM symbol；7 after described
In ODFM symbol, there are 15 dot cycle prefixes before first OFDM symbol, before rear 6 ODFM symbols before all no circulation
Sew.
Preferably, described to send downlink heartbeat signal to user terminal using the downlink heartbeat resource, it specifically includes: under
The pilot signal of row heartbeat signal occupy first OFDM symbol in 6 ODFM symbols and the last one OFDM symbol into
Row is sent, and downlink heartbeat signal occupies the progress of the OFDM symbol between first OFDM symbol and the last one OFDM symbol
It sends.
Preferably, described to send downlink heartbeat signal to user terminal using the downlink heartbeat resource, it specifically includes: right
All activated user terminal on one frequency point, downlink heartbeat resource described in the time-division send the corresponding downlink of each activation user terminal
Heartbeat signal.
Preferably, all activated user terminal on a frequency point, downlink heartbeat resource described in the time-division send each
The corresponding downlink heartbeat signal of user terminal is activated, is specifically included: each corresponding downlink heartbeat of activation user terminal is believed
Number, scrambling processing is carried out to the downlink heartbeat signal by the mark of activation user terminal corresponding with the downlink heartbeat signal；
The activation user terminal when receiving downlink heartbeat signal using the mark of this activation user terminal to downlink heartbeat signal into
Row scramble process obtains downlink heartbeat signal corresponding with this activation user terminal.
The communication device of down-going synchronous frame in a kind of wireless communication system, comprising:
Distribution module is arranged in base station side, for distributing specified downlink resource in down-going synchronous frame as the downlink heart
Jump resource；
Downlink heartbeat signal sending module, setting is in base station side, for utilizing the downlink heartbeat resource to user terminal
Send downlink heartbeat signal；
Downlink heartbeat signal receiving module, after setting receives the down-going synchronous frame in user terminal, used in user terminal,
Parsing receives the downlink heartbeat signal from the downlink heartbeat resource therein.
Compared with prior art, the downlink resource conduct of half is distributed in the down-going synchronous frame of the present invention in a communications system
Downlink heartbeat resource sends downlink heartbeat signal to user terminal using the downlink heartbeat resource；The user terminal is connecing
After receiving the down-going synchronous frame, parsing receives the downlink heartbeat signal from the downlink heartbeat resource therein.Therefore
The present invention is when carrying out heartbeat detection, it is not necessary to using increase UDP or TCP/IP and media access control layer (MAC, Media
Access Control) head heartbeat packet, when passing through physical layer transmission, not will increase the expense of physical resource, therefore improve
The efficiency of transmission of wireless communication system.Further, it for a kind of narrow band width wireless communication systems, passes in this way
Defeated downlink heartbeat signal can reduce the influence that the expense of heartbeat detection technology operates normally communication system.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the communication means of down-going synchronous frame in wireless communication system of the present invention；
Fig. 2 is a kind of time-frequency resource allocating schematic diagram of synchronization frame of the present invention；
Fig. 3 is the schematic diagram of the specific Resource Allocation Formula of synchronization frame of the present invention；
Fig. 4 is a kind of composition schematic diagram of the communication device of down-going synchronous frame in wireless communication system of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further described in more detail.
Fig. 1 is a kind of flow diagram of the communication means of down-going synchronous frame in wireless communication system of the present invention.Ginseng
See Fig. 1, the invention mainly comprises:
Step 101 distributes specified downlink resource as downlink heartbeat resource in down-going synchronous frame；
Step 102 sends downlink heartbeat signal to user terminal using the downlink heartbeat resource；
Step 103, the user terminal are after receiving the down-going synchronous frame, from the downlink heartbeat resource therein
Middle parsing receives the downlink heartbeat signal.
In wireless communication procedure, transmitting terminal dynamic sends data frame, wherein in a data frame including synchronizing information.It receives
End multi-frame synchronization is realized by the synchronizing information captured in received data frame.Down-going synchronous frame of the present invention refers to base station
(eNodeB) to synchronization frame transmitted by user terminal (UE), which can occupy certain corresponding letter of downlink resource transmission
Number.
Fig. 2 is a kind of time-frequency resource allocating schematic diagram of synchronization frame of the present invention.Referring to fig. 2, under of the present invention
In row synchronization frame, on running time-frequency resource, using totally 13 business orthogonal frequency division multiplexing in the 0th subframe and the 1st subframe
(OFDM) running time-frequency resource shared by symbol is as downlink resource, and the running time-frequency resource of dash area is downlink resource as shown in figure 1.Its
In, it is described that specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource, it specifically includes: by the down-going synchronous
Half down time-frequency resource in the entire downlink resource of frame is as downlink heartbeat resource, for sending downlink heartbeat signal, example
As the running time-frequency resource 211 to be used to send downlink heartbeat signal in this Fig. 2 as downlink heartbeat resource；When by the other half downlink
Frequency resource 212 is used to send synchronization signal as down-going synchronous resource.Shown in this Fig. 2, the downlink resource refers on time-frequency
Resource, i.e., occupied time resource, more specifically, in orthogonal frequency division multiplexing (OFDM) communication system, in Fig. 2,
Time resource is indicated with business OFDM symbol occupied time.
The OFDM is a kind of particular frequencies multiplexing technology using multi-carrier modulation.Traditional Frequency Division Multiplexing system
(FDM) in: entire signal frequency range is divided into N number of frequency subchannels not overlapped each other, and each subchannel transmission independently modulates symbol
Number, N number of subchannel is then subjected to channeling again, this method is conducive to eliminate interchannel interference, but cannot be effectively sharp
Use frequency spectrum resource.OFDM technology can use the orthogonality between subcarrier without this section of guard band.To save
Bandwidth, thus the OFDM ratio FDM availability of frequency spectrum is higher.The basic principle of OFDM is exactly that high-speed data-flow is passed through serial to parallel conversion,
It is assigned in the relatively low several sub-channels of transmission rate and is transmitted.Symbol period meeting in sub-channels each in this way
It is elongated, therefore multidiameter delay influence caused by system can be mitigated.OFDM is using easy to accomplish orthogonal based on carrier frequency
Fourier transform modulation, directly in Base-Band Processing.
Fig. 3 is the schematic diagram of the specific Resource Allocation Formula of synchronization frame of the present invention.Shown in Fig. 3 10 × 13 square
One resource block of matrix representation, wherein 10 rows indicate that bandwidth is 10 subcarriers of nominated bandwidth, each column is exactly an OFDM symbol,
One shares 13 column, this 13 OFDM symbols indicate the downlink resource of the down-going synchronous frame, specifically down time-frequency resource.Wherein
Preceding 6 OFDM symbols (dash area in such as figure) occupied time is identical with rear 7 OFDM symbols occupied time
's.Resource particle (Resource element) is commonly referred to as each of resource block cell.In information transmission,
It needs these resource particles to modulate (QAM) respectively, carries out IFFT transformation after carrying out serial to parallel conversion, then carry out parallel serial conversion, add
OFDM data stream is formed after entering cyclic prefix (CP).
The cyclic prefix (CP) of the OFDM is exactly that a part duplication of OFDM symbol tail portion is put into before OFDM, CP's
Effect is to eliminate symbol-interference (ISI) and interchannel interference (ICI).
In the present invention, as shown in figure 3, including 13 ODFM symbols in downlink resource in the down-going synchronous frame, in institute
It states and occupies preceding 6 ODFM symbols in down-going synchronous frame as downlink heartbeat resource, as shown in the shaded block in Fig. 3；It occupies simultaneously
Afterwards 7 ODFM symbols send the resource of downlink synchronous signal, as shown in the blank block in Fig. 3 as down-going synchronous resource.?
In the downlink heartbeat resource；The pilot signal of downlink heartbeat signal occupies the symbol of first OFDM in 6 ODFM symbols
Number and the last one (i.e. the 6th) OFDM symbol sent, in the 1st and the 6th OFDM symbol, before each OFDM symbol
There are 13 dot cycle prefixes (CP) in face.Downlink heartbeat signal occupies between first OFDM symbol and the last one OFDM symbol
OFDM symbol sent, that is, occupy the described 2nd, 3,4,5 OFDM symbol, have 13 point CP before each OFDM symbol.Such as
It is described by the occupied rear 7 ODFM symbols of downlink synchronous signal shown in Fig. 3, have follow at 15 points before first OFDM symbol
Ring prefix, all without cyclic prefix before rear 6 ODFM symbols.
In an advantageous embodiment, described to send downlink heartbeat letter to user terminal using the downlink heartbeat resource
Number, specifically include: to all activated user terminal on a frequency point, downlink heartbeat resource described in the time-division sends each activation user
The corresponding downlink heartbeat signal of terminal.That is, in the time domain, by the time-domain resource of each resource block in the downlink heartbeat resource
Corresponding activation user terminal is distributed to, corresponding downlink heartbeat signal is sent in each time-domain resource, it is described to swash
User terminal living receives the downlink heartbeat signal in the time-domain resource in the downlink heartbeat resource for itself distribution.
In another preferred embodiment, all activated user terminal on a frequency point, downlink described in the time-division
Heartbeat resource sends the corresponding downlink heartbeat signal of each activation user terminal, specifically includes: activating user terminal pair to each
The downlink heartbeat signal answered, by the mark of activation user terminal corresponding with the downlink heartbeat signal to the downlink heartbeat signal
Carry out scrambling processing；The activation user terminal is when receiving downlink heartbeat signal using the mark of this activation user terminal under
Row heartbeat signal carries out scramble process, obtains downlink heartbeat signal corresponding with this activation user terminal.To make to activate user
Terminal uniquely can correctly parse whether base station (eNodeB) has sent downlink heartbeat signal for the activation user terminal.
As described above, eNodeB of the invention can specially reserve downlink heartbeat resource in down-going synchronous frame, difference is used
Family terminal shares the downlink heartbeat resource by the time-division, and this method does not need to increase UDP or TCP/IP and MAC header is equal
Outer expense, user terminal also can receive downlink heartbeat signal, and carry out heartbeat detection processing, reach the mesh of heartbeat detection
, therefore the efficiency of transmission of wireless communication system can be effectively improved.It is also possible to using different scrambling sequence
Mode distinguishes different user terminals, effectively prevents the generation of heartbeat erroneous matching event.
It is corresponding with the above method, the invention also discloses a kind of communication device of down-going synchronous frame in wireless communication system,
For executing the above method.Fig. 4 is a kind of composition of the communication device of down-going synchronous frame in wireless communication system of the present invention
Schematic diagram.Referring to fig. 4, which includes:
Distribution module 401 is arranged in base station side, for distributing specified downlink resource in down-going synchronous frame as downlink
Heartbeat resource；
Downlink heartbeat signal sending module 402, setting is in base station side, for whole to user using the downlink heartbeat resource
End sends downlink heartbeat signal；
Downlink heartbeat signal receiving module 403 is arranged in user terminal, receives the down-going synchronous frame used in user terminal
Afterwards, parsing receives the downlink heartbeat signal from the downlink heartbeat resource therein.
In addition, each embodiment of the invention can pass through the data processing by data processing equipment such as computer execution
Program is realized.Obviously, data processor constitutes the present invention.In addition, being commonly stored data in one storage medium
Processing routine is by directly reading out storage medium for program or by installing or copying to data processing equipment for program
It stores in equipment (such as hard disk and/or memory) and executes.Therefore, such storage medium also constitutes the present invention.Storage medium can be with
Use any kind of recording mode, such as paper storage medium (such as paper tape), magnetic storage medium (such as floppy disk, hard disk, flash memory
Deng), optical storage media (such as CD-ROM), magnetic-optical storage medium (such as MO) etc..
Therefore the invention also discloses a kind of storage mediums, wherein it is stored with data processor, the data processor
For executing any embodiment of the above method of the present invention.
In addition, method and step of the present invention is with data processor in addition to that can be realized, can also by hardware Lai
It realizes, for example, can be by logic gate, switch, specific integrated circuit (ASIC), programmable logic controller (PLC) and insertion microcontroller
Etc. realizing.Therefore this hardware that the method for the invention may be implemented also may be constructed the present invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (6)
1. the communication means of down-going synchronous frame in a kind of wireless communication system characterized by comprising
Specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource；
Downlink heartbeat signal is sent to user terminal using the downlink heartbeat resource；
The user terminal is after receiving the down-going synchronous frame, and parsing receives institute from the downlink heartbeat resource therein
State downlink heartbeat signal；
It is described that specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource, it specifically includes:
It include 13 orthogonal frequency division multiplexing ODFM symbols in downlink resource in the down-going synchronous frame, wherein occupying first 6
ODFM symbol is as downlink heartbeat resource, and 7 ODFM symbols are as down-going synchronous resource after occupancy, wherein preceding 6 ODFM
The time that symbol occupies is identical with the time that rear 7 ODFM symbols occupy.
2. the method according to claim 1, wherein
In preceding 6 ODFM symbols, there are 13 dot cycle prefixes before each OFDM symbol；
After described in 7 ODFM symbols, there are 15 dot cycle prefixes before first OFDM symbol, before rear 6 ODFM symbols
All without cyclic prefix.
3. the method according to claim 1, wherein described sent out using the downlink heartbeat resource to user terminal
Downlink heartbeat signal is sent, is specifically included:
The pilot signal of downlink heartbeat signal occupies first OFDM symbol and the last one in preceding 6 ODFM symbols
OFDM symbol is sent, and downlink heartbeat signal occupies between first OFDM symbol and the last one OFDM symbol
OFDM symbol is sent.
4. the method according to claim 1, wherein described sent out using the downlink heartbeat resource to user terminal
Send downlink heartbeat signal, specifically include: to all activated user terminal on a frequency point, downlink heartbeat resource described in the time-division is sent out
Send each activation user terminal corresponding downlink heartbeat signal.
5. according to the method described in claim 4, it is characterized in that, all activated user terminal on a frequency point,
Downlink heartbeat resource described in time-division sends the corresponding downlink heartbeat signal of each activation user terminal, specifically includes: swashing to each
The corresponding downlink heartbeat signal of work user terminal, by the mark of activation user terminal corresponding with the downlink heartbeat signal to this
Downlink heartbeat signal carries out scrambling processing；The activation user terminal is whole using this activation user when receiving downlink heartbeat signal
The mark at end carries out scramble process to downlink heartbeat signal, obtains downlink heartbeat signal corresponding with this activation user terminal.
6. the communication device of down-going synchronous frame in a kind of wireless communication system characterized by comprising
Distribution module, setting are provided in base station side for distributing specified downlink resource in down-going synchronous frame as downlink heartbeat
Source；It is described that specified downlink resource is distributed in down-going synchronous frame as downlink heartbeat resource, it specifically includes: the down-going synchronous
It include 13 orthogonal frequency division multiplexing ODFM symbols in downlink resource in frame, wherein occupying preceding 6 ODFM symbols as the downlink heart
Resource is jumped, 7 ODFM symbols are as down-going synchronous resource after occupancy, wherein the time of preceding 6 ODFM symbols occupancy and institute
It is identical to state the time that rear 7 ODFM symbols occupy；
Downlink heartbeat signal sending module, setting is in base station side, for being sent using the downlink heartbeat resource to user terminal
Downlink heartbeat signal；
Downlink heartbeat signal receiving module, after setting receives the down-going synchronous frame in user terminal, used in user terminal, from it
In the downlink heartbeat resource in parsing receive the downlink heartbeat signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103139924A (en) * | 2011-12-05 | 2013-06-05 | 华为技术有限公司 | Method and device for scheduling resources |
| CN103312449A (en) * | 2012-03-16 | 2013-09-18 | 鼎桥通信技术有限公司 | Downlink data packet transmission method under AP (Access Point) networking scene and RNC (Radio Network Controller) |
| CN104768178A (en) * | 2014-01-03 | 2015-07-08 | 普天信息技术有限公司 | Heartbeat transmitting method and system |
-
2014
- 2014-12-29 CN CN201410837431.3A patent/CN105812306B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103139924A (en) * | 2011-12-05 | 2013-06-05 | 华为技术有限公司 | Method and device for scheduling resources |
| CN103312449A (en) * | 2012-03-16 | 2013-09-18 | 鼎桥通信技术有限公司 | Downlink data packet transmission method under AP (Access Point) networking scene and RNC (Radio Network Controller) |
| CN104768178A (en) * | 2014-01-03 | 2015-07-08 | 普天信息技术有限公司 | Heartbeat transmitting method and system |
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