CN106304389B - A kind of indicating means and device of resource collision - Google Patents

Abstract

The invention discloses a kind of indicating means of resource collision and devices, to reduce the expense of collision instruction information.This method are as follows: first terminal carries out signal monitoring in current frame period respectively in each service subframe of non-self occupancy, wherein, one service subframe of every arrival, first terminal judges whether this service subframe is collision service subframe, after current frame period, first terminal is according to preset mapping relations, collision instruction subframe corresponding to each collision service subframe is determined respectively, it is every to reach a collision instruction subframe, first terminal determines that there are when at least one collision service subframe in this corresponding each service subframe of collision instruction subframe, it is collided at this and correspondingly sends the collision instruction information for colliding service subframe in instruction subframe on corresponding indicating unit.In this way, not having to using FI to other terminal notification resource using status, so that the expense of collision instruction information obtains biggish compression, to reduce system operating load.

Description

A kind of indicating means and device of resource collision

Technical field

The present invention relates to field of communication technology, in particular to the indicating means and device of a kind of resource collision.

Background technique

In time slot Aloha (ALOHA) collision discovery procedure in car networking, period of sub-frame of the terminal based on setting is (false If including N number of subframe), in each period of sub-frame, business datum is sent in selected transmission subframe；In the business of transmission While data, terminal needs to send frame information (Frame Information, FI), and wherein FI is by son N number of in period of sub-frame The information of frame is constituted, the information of each subframe include 8 bit temporary identifiers (Source Temporary Identifier, ) and 2 bit status informations (STATUS) STI.Wherein, the concrete meaning of status information are as follows: idle state, occupied state, collision State or double bounce neighbors occupied state.

Clearly as needing the information comprising each subframe in corresponding period of sub-frame, therefore, FI in the FI that terminal is sent Transmission need to occupy a large amount of running time-frequency resource, it is generally the case that serious operating load can be caused to system.

For example, it is assumed that include 100 subframes in the period of sub-frame that terminal uses, just needs in the FI that terminal is sent every time Information comprising 100 subframes, since the data volume size of the information of each subframe is 10 bits, then, terminal is every time Need to send the FI of 1000 bits while sending business datum.

Under the prior art, the main purpose that terminal sends FI is that other terminals is assisted to find its service subframe respectively selected Whether collided, and is similar to the reserved data load amount of the security message of FI in car networking on a 3000 bits left side The right side, for business datum, the expense of FI is excessively huge, and serious operating load can be brought to system.

Summary of the invention

The embodiment of the present invention provides the indicating means and device of a kind of resource collision, existing in the prior art to solve The excessively huge problem of FI expense.

Specific technical solution provided in an embodiment of the present invention is as follows:

A kind of indicating means of resource collision, comprising:

First terminal carries out signal monitoring in current frame period respectively in each service subframe of non-self occupancy, Wherein, one service subframe of every arrival, when first terminal determines that one service subframe is occupied, determines one business Whether subframe is collision service subframe；

After current frame period, first terminal determines each collision business according to preset mapping relations respectively Collision corresponding to subframe indicates subframe；

Every to reach a collision instruction subframe, first terminal determines the corresponding each business of one collision instruction subframe When colliding service subframe there are at least one in subframe, at least one described collision is sent in one collision instruction subframe The collision of service subframe indicates information.

In this way, not having to using FI to other terminal notification resource using status, so that the expense of collision instruction information obtains Biggish compression, to reduce system operating load.

Preferably, first terminal determines that a service subframe is occupied, specifically include:

First terminal obtains the reception signal in one service subframe, and calculates reception total power signal；

When first terminal determines that the reception total power signal reaches preset first threshold value, one business is determined Subframe is occupied.

Preferably, determining whether one service subframe is to touch when first terminal determines that a service subframe is occupied Hit service subframe, comprising:

When first terminal determines that one service subframe is occupied, interference measurement is carried out based on signal is received, is done Disturb power；

First terminal judges whether the jamming power reaches preset second threshold value, if so, determination is one Service subframe is collision service subframe；Otherwise, it determines one service subframe is not collision service subframe.

Preferably, first terminal determine one service subframe the second jamming power reach the second thresholding after, into One step includes:

Business datum received in one service subframe is parsed, after determining successfully resolved, according to solution Analysis result judges whether the business datum is periodicity sending, if so, determining to need for one service subframe Report collision instruction information；Otherwise, it is determined that not needing to report collision instruction information for one service subframe.

Preferably, further comprising:

First terminal collides in each of current frame period carry out signal monitoring in instruction subframe respectively, receives other The collision that terminal is sent indicates information, wherein within a frame period, the time-domain position of collision instruction subframe is in service subframe Before or after time-domain position, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

Preferably, within a frame period, the frequency domain bandwidth that all collision instruction subframes occupy is contained in all business In the frequency domain bandwidth that frame occupies.

Preferably, further, the frequency domain bandwidth that all collision instruction subframes occupy is the frequency that all service subframes occupy The half of domain bandwidth.

In such manner, it is possible to the signal reception power of more acurrate more easily clearing collision instruction information.

Preferably, first terminal according to preset mapping relations, is determined respectively corresponding to each collision service subframe Collision instruction subframe, comprising:

First terminal determines each corresponding indicating unit institute of collision service subframe according to preset mapping relations respectively The collision of ownership indicates subframe, and the indicating unit is used to carry the collision instruction information of corresponding collision service subframe；Wherein, It include the indicating unit for setting number in one collision instruction subframe, an indicating unit includes an orthogonal frequency division multiplexing skill Art OFDM symbol, alternatively, including half of OFDM symbol.

Preferably, first terminal determines that one collision instruction subframe is corresponding after reaching a collision instruction subframe When colliding service subframe there are at least one in each service subframe, transmission is described at least in one collision instruction subframe The collision of one collision service subframe indicates information, comprising:

After first terminal reaches one collision instruction subframe, determining that one collision instruction subframe is corresponding each When colliding service subframe there are at least one in a service subframe, the collision of at least one collision service subframe is indicated into letter Breath, which is respectively written into corresponding indicating unit, to be sent；Wherein, the transmitting function that first terminal uses on an indicating unit Rate is the maximum of the reception total power signal and the first terminal in the corresponding collision service subframe of one indicating unit Minimum value in available launch power.

In this way, avoiding when multiple terminals detect collision service subframe X, collision is sent with maximum transmission power and is referred to Show information, and cause the transmission power of collision instruction information excessive, and propagation distance is farther out, other terminals is caused to generate erroneous judgement The problem of.

Preferably, further comprising:

First terminal indicates information according to the collision that the every other terminal received within the frame period is sent, and determines On indicating unit in collision instruction subframe corresponding to itself selected service subframe, total power signal is received higher than preset When third threshold value, determine that itself selected service subframe collides, and select the service subframe of itself again.

Preferably, further comprising:

First terminal indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.

A kind of instruction device of resource collision, comprising:

Signal monitoring unit, for being carried out in each service subframe of non-self occupancy in current frame period respectively Signal is monitored, wherein one service subframe of every arrival when determining that one service subframe is occupied, determines one industry Whether business subframe is collision service subframe；

Indicating unit is mapped, for according to preset mapping relations, determining each respectively after current frame period It collides collision corresponding to service subframe and indicates subframe；

Information transmitting unit reaches a collision instruction subframe for every, determines that one collision instruction subframe is corresponding Each service subframe in there are at least one collide service subframe when, one collision instruction subframe on send described in extremely The collision of few collision service subframe indicates information.

In this way, not having to using FI to other terminal notification resource using status, so that the expense of collision instruction information obtains Biggish compression, to reduce system operating load.

Preferably, the signal monitoring unit is specifically used for when determining that a service subframe is occupied:

The reception signal in one service subframe is obtained, and calculates reception total power signal；

When determining that the reception total power signal reaches preset first threshold value, determine that one service subframe is occupied With.

Preferably, determining whether one service subframe is collision business when determining that a service subframe is occupied When subframe, the signal monitoring unit is specifically used for:

When determining that one service subframe is occupied, interference measurement is carried out based on signal is received, obtains jamming power；

Judge whether the jamming power reaches preset second threshold value, if so, determining one service subframe To collide service subframe；Otherwise, it determines one service subframe is not collision service subframe.

Preferably, first terminal determine one service subframe the second jamming power reach the second thresholding after, institute Signal monitoring unit is stated to be further used for:

Business datum received in one service subframe is parsed, after determining successfully resolved,

Judge whether the business datum is periodicity sending according to parsing result, if so, determining to need for institute It states a service subframe and reports collision instruction information；Otherwise, it is determined that not needing to report collision to refer to for one service subframe Show information.

Preferably, the signal monitoring unit is further used for:

It is collided respectively in each of current frame period and carries out signal monitoring in instruction subframe, receive the transmission of other terminals Collision indicate information, wherein within a frame period, collision instruction subframe time-domain position service subframe time-domain position Before or after, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

Preferably, within a frame period, the frequency domain bandwidth that all collision instruction subframes occupy is contained in all business In the frequency domain bandwidth that frame occupies.

Preferably, further, the frequency domain bandwidth that all collision instruction subframes occupy is the frequency that all service subframes occupy The half of domain bandwidth.

In such manner, it is possible to the signal reception power of more acurrate more easily clearing collision instruction information.

Preferably, determining that collision corresponding to each collision service subframe refers to respectively according to preset mapping relations When showing subframe, the mapping indicating unit is specifically used for:

According to preset mapping relations, determine that each corresponding indicating unit of collision service subframe belonged to touches respectively Instruction subframe is hit, the indicating unit is used to carry the collision instruction information of corresponding collision service subframe；Wherein, a collision It indicates to include the indicating unit for setting number in subframe, an indicating unit includes an orthogonal frequency division multiplexi OFDM symbol Number, alternatively, including half of OFDM symbol.

Preferably, determining the corresponding each business of one collision instruction subframe after reaching a collision instruction subframe When colliding service subframe there are at least one in subframe, at least one described collision is sent in one collision instruction subframe When the collision of service subframe indicates information, the information transmitting unit is specifically used for:

After first terminal reaches one collision instruction subframe, determining that one collision instruction subframe is corresponding each When colliding service subframe there are at least one in a service subframe, the collision of at least one collision service subframe is indicated into letter Breath, which is respectively written into corresponding indicating unit, to be sent；Wherein, the transmitting function that first terminal uses on an indicating unit Rate is the maximum of the reception total power signal and the first terminal in the corresponding collision service subframe of one indicating unit Minimum value in available launch power.

In this way, avoiding when multiple terminals detect collision service subframe X, collision is sent with maximum transmission power and is referred to Show information, and cause the transmission power of collision instruction information excessive, and propagation distance is farther out, other terminals is caused to generate erroneous judgement The problem of.

Preferably, the signal monitoring unit is further used for:

Information is indicated according to the collision that the every other terminal received within the frame period is sent, and determines that itself is selected Service subframe corresponding to collision instruction subframe in indicating unit on, receive total power signal be higher than preset third thresholding When value, determine that itself selected service subframe collides, and select the service subframe of itself again.

Preferably, further comprising:

Described device indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.

Detailed description of the invention

Fig. 1 is the indicating means flow chart of resource collision in the embodiment of the present invention；

Fig. 2 is collision instruction subframe frequency-region signal schematic diagram in the embodiment of the present invention；

Fig. 3 and Fig. 4 is service subframe and collision instruction subframe mapping relations schematic diagram in the embodiment of the present invention；

Fig. 5 and Fig. 6 is terminal structure schematic diagram in the embodiment of the present invention.

Specific embodiment

In order to solve the problems, such as that FI expense existing in the prior art is excessively huge, in the embodiment of the present invention, no longer use FI is to other terminal notification resource using status, and there is provided its alternative solutions.Specifically: by will be in a frame period Subframe is divided into service subframe and collision instruction two parts of subframe, and the mapping for establishing service subframe and collision instruction subframe is closed System refers in its corresponding collision instruction subframe to the collision of other terminal notifications when determining that a certain service subframe collides Show information, to reduce the expense that system sends security message, reduces system operating load.

The preferred scheme of the embodiment of the present invention is described in detail with reference to the accompanying drawing.

In the embodiment of the present invention, after some endpoint to register to network, needing first to monitor a complete frame period (can also Referred to as observation cycle), then select service subframe to occupy from idling-resource, for sending business datum, wherein can be with It randomly chooses a service subframe to occupy, the smallest service subframe of jamming power can also be selected to occupy in idling-resource.? In the frame period later, if the service subframe that terminal occupies does not collide, terminal will not actively abandon the business occupied Subframe, and business datum is sent using the service subframe occupied always.

During subsequent transmission business datum, terminal is by monitoring a complete observation cycle, based on received Signal and physical layer measurement construct complete state table, and terminal determines that itself is occupied by the snoop results of a upper observation cycle Service subframe whether collide, if so, reselected in next frame period itself occupancy service subframe, otherwise, The service subframe currently occupied is kept in next frame period.

Wherein, the period that terminal sends business datum is contained in observation cycle, and different terminals send the week of business datum Phase may be identical or different, and observation cycle must send the integral multiple in the period of business datum for all terminals, that is, observation cycle is All terminals send the least common multiple in the period of business datum.It can guarantee that terminal can supervise in an observation cycle in this way Hear the signal of every other terminal.

Table 1

Subframe	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
																	State	S	S							S	S
Periodically	6	7							6	6
																	Interference	N0	N1							N0	N1
It sends		N1

As shown in table 1, table 1 is the running time-frequency resource use state table (hereinafter referred to as state table) that terminal is directed to that subframe 0 is safeguarded, It wherein, include the corresponding mode bit of each subframe in statusline, S indicates to occupy, and I indicates idle；In timing row, record It is used to indicate the effective time of occupancy, if be not reset before clearing, corresponding subframe is restored into idle state, if It is reset before clearing, then corresponding subframe is kept into occupied state.The time (Tx) of resetting is to send business in corresponding subframe The integral multiple of the minimum period of data；In interference row, the jamming power calculated for corresponding subframe is had recorded；Such as, Nx is indicated In the interference value that subframe x is calculated；In sending row, Ni (i=0,1 ...) indicates interference value.

Further, in a frame period, terminal receives the collision of other terminals transmission in each collision instruction subframe It indicates information, and signal prison is carried out to the business datum that other terminals are sent in each service subframe of non-self occupancy It listens, in this way, terminal can safeguard a time interval resource use state table as shown in Table 1 for each subframe, then, pass through In one frame period, terminal can know the collision status of each service subframe of non-self occupancy, and reach each subsequent When the corresponding collision of collision service subframe indicates subframe, terminal can send corresponding collision to other terminals and indicate information.

Specifically, as shown in fig.1, in the embodiment of the present invention, the resource that first terminal uses is touched by taking first terminal as an example The detailed process of the indicating means hit is as follows:

Step 100: first terminal carries out in each service subframe of non-self occupancy in current frame period respectively Signal is monitored, wherein one service subframe of every arrival when first terminal determines that the service subframe is occupied, determines business Whether frame is collision service subframe.

Specifically, include collision instruction subframe and service subframe, collision instruction in the embodiment of the present invention in a frame period Subframe is only used to send business datum for sending collision instruction information, service subframe, does not carry FI.

Some terminal (can be described as first terminal) is collided in each of current frame period and is carried out in instruction subframe Signal is monitored, and receives the collision instruction information of other terminals transmission, business number is sent when reaching the service subframe itself occupied According to, the progress signal monitoring in each service subframe of non-self occupancy, and judge whether each service subframe collides.

Specifically, when executing step 100, whether first terminal judges service subframe A for reaching service subframe A Occupied detailed process is as follows:

S1, first terminal obtain the reception signal on service subframe A, and calculate reception total power signal；

When S2, first terminal determine that receiving total power signal reaches preset first threshold value, determine that service subframe A is occupied With.

Wherein, reception total power signal reaches preset first threshold value and refers to, receives total power signal and is more than or equal in advance If the first threshold value, generally refer to receive total power signal be higher than the first threshold value.

Further, after determining that service subframe A is occupied, the mode bit of first terminal service subframe A in state table Occupied information is recorded, for example, write-in label S；The timing position of service subframe A is updated to initial value in state table, for example, writing Enter Tx, Tx is the effective time that subframe x is occupied；And based on receive signal carry out interference measurement, obtain jamming power A, and Write-in calculates the jamming power A obtained in the interference row of service subframe A in state table.

On the other hand, still for reaching service subframe A, when executing step 100, first terminal is determining the sub- A of business After occupied, judging service subframe A whether to collide, the specific method is as follows:

First terminal judges whether the jamming power A on service subframe A reaches preset second threshold value, if so, really Service subframe A is determined for collision service subframe；Otherwise, it determines service subframe A is not collision service subframe.Wherein, jamming power A reaches Refer to preset second threshold value, jamming power A is more than or equal to preset second threshold value, generally refers to jamming power A high In the second threshold value.

After determining service subframe A for collision service subframe, first terminal remembers the transmission position of service subframe A in state table Record is 1；After determining service subframe A not and being collision service subframe, first terminal is clear by the transmission position of service subframe A in state table Zero.

After aforesaid operations, the non-zero numerical value of the timing position of all service subframes is subtracted 1 by first terminal, and by numerical value The mode bit of service subframe less than 0 is recorded as I, indicates idle, and column is believed in state table by the subframe for being set to idle I It is stated that the other information domain of write-in occurrence is set to initial state in breath domain.

Further, determine that the second jamming power of service subframe A reaches after the second thresholding in business in first terminal Received business datum is parsed on subframe A, after determining successfully resolved, according to parsing result judge business datum whether be Periodicity sending, if so, determining to need to report collision instruction information for service subframe A；Otherwise, it is determined that not needing to be directed to Service subframe A reports collision instruction information.

It wherein, include the collision message for colliding service subframe in a collision instruction information.For example, refering to shown in table 2, In collision message, subframe position, for recording the serial number of the subframe to collide；Whether decoded bits are used for record traffic data Successfully resolved, wherein 0 represents business datum successfully resolved, and 1 represents data service data parsing failure；STI/N, with 8 bits It indicates, in business datum successfully resolved, for recording the mark for occupying the terminal of subframe, when business datum parses failure, For recording jamming power；Period position, for recording the period for occupying the terminal transmission business datum of subframe, wherein send industry The period of business data has 2 kinds, and respectively 8 subframes and 16 subframes are indicated with 1 bit, wherein 0, which represents the period 8,1, represents week Phase 16.For example, it is assumed that subframe 6 collides, and the business datum successfully resolved in subframe 6, then first terminal is raw for subframe 6 At the content of collision message be as shown in table 2:

Table 2

Subframe	Decoding	STI/N	Period
				6	0	9	1

In above process, if receiving total power signal is not up to preset first threshold value, first terminal is determined Service subframe A is unoccupied, i.e., idle.At this point, first terminal needs to carry out interference measurement, and corresponding business based on reception signal Subframe A records corresponding jamming power A ', and judges whether corresponding service subframe A has recorded occupied information, if so, keeping Occupied information is constant；Otherwise, corresponding service subframe A is recorded as I, indicates idle.

After being determined as the free time, by this service subframe, the numerical value of corresponding timing position subtracts 1 in state table, and all The non-zero numerical value of the timing position of service subframe (including this service subframe) subtracts 1, and the state of the subframe by numerical value less than 0 is set to sky Not busy I, and the subframe of idle I in the column information field it is stated that other information domain of write-in occurrence in state table will be set to It is set to initial state.

Step 110: after current frame period, first terminal determines each according to preset mapping relations respectively It collides collision corresponding to service subframe and indicates subframe.

It specifically, include the indicating unit for setting number in a collision instruction subframe, indicating unit is for carrying phase The collision for the collision service subframe answered indicates information, i.e. a service subframe is corresponding with an indicating unit, and a collision refers to Show the collision instruction information that may carry different collision service subframes in subframe by multiple indicating units.Wherein, collision refers to Show the timing relationship between subframe or service subframe and frame head with agreement, to guarantee that collision instruction subframe instruction is located at together with it The collision of service subframe in one frame indicates information.According to different indicating unit configuration methods, indicating unit can be with Comprising an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multipleing, OFDM) symbol, or Person, also may include half of OFDM symbol, and this point will describe in detail in subsequent embodiment.

On the other hand, within a frame period, it is all collision instruction subframes time-domain positions all service subframes when Before or after the position of domain, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.Institute The frequency domain bandwidth for having collision instruction subframe to occupy is contained in the frequency domain bandwidth that all service subframes occupy, in order to more accurately count The signal power of indicating unit is calculated, the frequency domain bandwidth that all collision instruction subframes occupy all service subframes can be compressed to and occupied Frequency domain bandwidth half, in this way, first terminal can according to unloaded wave calculate collision instruction subframe frequency domain interference general power, In this way, collision instruction subframe receives total power signal=frequency-domain received signal general power-collision instruction subframe frequency domain interference General power.

For example, collision instruction subframe accounts for as shown in fig.2, the frequency domain resource that service subframe occupies includes 200 subcarriers Subcarrier be 50~149, then frequency-domain received signal general power=sum (P50, P149)-sum (P0, P49)-sum (P150, P199), wherein sum (Px, Py) indicates that, to the summation from Px to Py, Px indicates the reception power of subcarrier x.

Step 120: every to reach a collision instruction subframe, first terminal determines that this collision instruction subframe is corresponding each When colliding service subframe there are at least one in a service subframe, corresponding at least one is sent in this collision instruction subframe The collision of a collision service subframe indicates information.

In a frame period, exist between the indicating unit in each service subframe and a collision instruction subframe and reflect Relationship is penetrated, includes multiple indicating units in a collision instruction subframe, therefore, a collision instruction subframe can correspond to multiple industry Business subframe.If a certain service subframe is judged as collision service subframe, first terminal can be arrived in corresponding collision instruction subframe Up to when, according to mapping relations, collision instruction information is sent in corresponding indicating unit in corresponding collision instruction subframe.

For example, being collided after first terminal reaches a collision instruction subframe (hereinafter referred to as collision instruction subframe M) determining When indicating to have collision service subframe X and collision service subframe Y in the corresponding each service subframe of subframe M, by collision business The collision instruction information of frame X and collision service subframe Y, which is respectively written into corresponding indicating unit, to be sent.

Wherein, for colliding the corresponding indicating unit X of service subframe X, hair that first terminal uses on indicating unit X Power is penetrated, for the minimum in the maximum available launch power for receiving total power signal and first terminal on collision service subframe X Value.In this way, avoiding when multiple terminals detect collision service subframe X, collision instruction letter is sent with maximum transmission power Breath, and cause the transmission power of collision instruction information excessive, and propagation distance is farther out, cause other terminals to generate asking for erroneous judgement Topic.Erroneous judgement refers to, the terminal far from collision service subframe X originally can the multiplexing collide service subframe X, but due to collision Indicate that the transmission power of information is too strong, so as to cause can also receive collision instruction information apart from far terminal, and cannot Multiplexing collision service subframe X.

In addition, in step 100, it is also possible to which, there are such case, first terminal passes through every in the current frame period Signal monitoring is carried out in one collision instruction subframe, receives the collision instruction information of other terminals transmission, however, it is determined that itself is selected Service subframe it is corresponding collision instruction subframe in indicating unit on, receive total power signal be higher than preset third threshold value When, then determine that itself selected service subframe collides, selectes the service subframe of itself again, and using again selected industry Subframe of being engaged in carries out the transmission of business datum.Wherein, first terminal detects itself selected corresponding indicating unit of service subframe On reception total power signal be higher than preset third threshold value when, it is believed that at least one other terminal is in this indicating unit On have sent collision instruction information, show the corresponding service subframe of this indicating unit (the i.e. selected business of first terminal itself Subframe) it is collided.

The above process illustrates first terminal, and service subframe and collision instruction subframe be in the time domain in a frame period Mappings characteristics, in addition, in order to improve handling capacity, first terminal can also be using frequency division manner and other terminal multiplexing service subframes With corresponding collision instruction subframe.

The resource mapping method in the embodiment of the present invention is described in further detail below with reference to specific application scenarios.

As described above, in a frame period, all subframes are divided into two parts, service subframe and collision instruction subframe, Service subframe is served only for transmission services data, and collision instruction subframe is for sending collision instruction information.

Wherein, configuration service subframe and collision instruction subframe number and arrangement position when, specifically, can use but It is not limited to following two mode:

First way are as follows: the position of all collision instruction subframes in the time domain before all service subframes or Later.

By taking collision indicates the preceding situation of subframe as an example, as shown in figure 3, the number of subframes for including in a frame period is N, Each subframe can be multiplexed by the way of frequency division by two terminals, for example, collision instruction subframe 1 is divided into subframe on frequency domain 1A and subframe 1B.For another example, service subframe K is divided into subframe KA and subframe KB on frequency domain.

Assuming that a subframe includes 14 OFDM, then, under the first technique, a subframe is divided into 7 set of symbols, It include 2 adjacent OFDM symbols in one set of symbols, a set of symbols is used to indicate the collision status of a service subframe, In, first OFDM symbol is as indicating unit, and for carrying collision instruction information, another OFDM symbol is as transmitting-receiving/hair The portable protective gaps (Guard Interval, GP) of receipts, do not send any data.In the case where frequency division multiplexing, each symbol It is upper to may exist two indicating units, the service subframe of the corresponding frequency division of each indicating unit.

For example, by collision indicate subframe 1A for, collision instruction subframe 1A in include 7 indicating units, respectively 1A, 2A ... 7A, collision instruction subframe 1A can be established mapping relations (or referred to as binding relationship) with 7 service subframes.Assuming that industry Business subframe KA and service subframe K+1A is respectively mapped on indicating unit 1A and indicating unit 2A, then first terminal is in a upper frame When detecting that service subframe KA and service subframe K+1A collide in the period, in current frame period, refer to reaching collision When showing subframe 1A, on indicating unit 1A, the collision for sending service subframe KA indicates information, on indicating unit 2A, sends industry The collision of business subframe K+1A indicates information.Specifically, it can send and be used to indicate on indicating unit 1A and indicating unit 2A The code word of collision, e.g., a certain specific zadoffchu sequence.

Similarly, it with the collision instruction subframe 1B that collision instruction subframe 1A is frequency division multiplexing relationship, also adopts in a like fashion Collision instruction information is sent in indicating unit, details are not described herein.

In a frame period, the number of collision instruction subframe is determined by the number of service subframe, it is assumed that service subframe Number is Nd, and the number of collision instruction subframe is Nf, then,It is rounded in expression.For example,Indicate that 8 service subframes need 2 collision instruction subframes and collide instruction message to carry it.

The second way are as follows: the location interval of service subframe and collision instruction subframe in the time domain arranges.By time domain sequence Successively are as follows: ... n service subframe, m collision indicate subframe, and n service subframe, m collision indicate subframe ....Wherein, m A collision instruction subframe is used to indicate the collision status of n service subframe, and n service subframe can be located at it using time-domain position M collision instruction subframe before indicates collision status, the m collision instruction subframe that can be located at using time-domain position after it Collision status is indicated, preferably, m is minimized the number for the service subframe that 1, n takes 1 collision instruction subframe that can indicate.

It is assumed that it is 1 that n value, which is 14, m value,.14 business are indicated using 1 collision instruction subframe The service condition of frame.Each collision instruction subframe can be multiplexed by the way of frequency division by two terminals, each business Frame can also be multiplexed by same two terminals using frequency division manner.For example, service subframe 0 is divided into subframe 0A and son on frequency domain Frame 0B, collision instruction subframe 14 are divided into subframe 14A and subframe 14B on frequency domain.

Specifically, by taking a subframe includes 14 OFDM symbols as an example, 1 collision instruction subframe includes 14 OFDM symbols Number, there are mapping relations between each OFDM symbol and a service subframe, wherein preceding half of OFDM in 1 OFDM symbol Symbol is used to carry the collision instruction information an of service subframe, and rear half of OFDM symbol is used for the GP received as transmitting-receiving/hair, no Send any data.In the case where frequency division multiplexing, the OFDM symbol of every half of carrying collision instruction information may exist two Indicating unit, the service subframe of the corresponding frequency division of each indicating unit.The pilot tone carried in each OFDM symbol is in frequency Subcarrier spacing becomes 2 times in first way on domain, and the time is 1/2 in first way.

For example, including 14 indicating units in a collision instruction subframe 14A, respectively so that collision indicates subframe 14A as an example For indicating unit 0A, 1A, 2A ..., 13A, 14 indicating units respectively with service subframe 0A, 1A ..., 13A establish map, Such as, service subframe 0A and indicating unit 0A are bound, service subframe 1A and indicating unit 1A binding ..., service subframe 13A and refer to Show that unit 13A is bound.

If first terminal detected that service subframe 0A and service subframe 1A collided in a upper frame period, In current frame period, when reaching collision instruction subframe 14A, on indicating unit 0A, the collision instruction of service subframe 0A is sent Information, on indicating unit 1A, the collision for sending service subframe 1A indicates information.Specifically, in indicating unit 0A and can refer to Show the code word for sending on unit 1A and being used to indicate collision, it is first if carrying collision instruction information using zadoffchu sequence Subcarrier spacing becomes 2 times in first way on first frequency domain, 1/2 when frequency point number becomes integral symbol in first way to Lower rounding adds 1 again, and time span is 1/2 of integral symbol time span in first way.

Similarly, with the collision instruction subframe 14B that collision instruction subframe 14A is frequency division multiplexing relationship, identical side is also used Formula sends collision instruction information in indicating unit, and details are not described herein.

In this way, 14 service subframes and 1 collision instruction subframe form a minimal circulation period, a frame period may Include multiple minimal circulation periods.Preferably, a frame period is the integral multiple in minimal circulation period.It is not when a frame period When the integral multiple in minimal circulation period, following configuration can be done:

For example, the minimal circulation period is 15, a frame period is 100,100/15=6.6, then can be divided into 6 minimal circulations The basic cycle that period is 15, then plus frame number be 10 specific cycle, in specific cycle, the number of service subframe is 9, The number of collision instruction subframe is 1, this 1 collision instruction subframe is used to indicate the service condition of 9 service subframes, wherein 1 Service subframe and the mapping relations of indicating unit can be without limitation.

Based on identical inventive concept, as shown in fig.5, a kind of terminal has also been devised in the embodiment of the present invention, comprising:

Signal monitoring unit 500, for respectively in current frame period non-self occupancy each service subframe Carry out signal monitoring, wherein one service subframe of every arrival when determining that this service subframe is occupied, determines this business Whether frame is collision service subframe；

Indicating unit 501 is mapped, for according to preset mapping relations, determining respectively every after current frame period Collision corresponding to one collision service subframe indicates subframe；

Information transmitting unit 502 reaches a collision instruction subframe for every, determines that this collision instruction subframe is corresponding When colliding service subframe there are at least one in each service subframe, is collided at this and send this in instruction subframe at least one is touched Hit the collision instruction information of service subframe.

In this way, not having to using FI to other terminal notification resource using status, so that the expense of collision instruction information obtains Biggish compression, to reduce system operating load.

Preferably, signal monitoring unit 500 is specifically used for when determining that a service subframe is occupied:

The reception signal in this service subframe is obtained, and calculates reception total power signal；

When determining that receiving total power signal reaches preset first threshold value, determine that this service subframe is occupied.

Preferably, determining whether this service subframe is collision service subframe when determining that a service subframe is occupied When, signal monitoring unit 500 is specifically used for:

When determining that this service subframe is occupied, interference measurement is carried out based on signal is received, obtains jamming power；

Judge whether jamming power reaches preset second threshold value, if so, determining that this service subframe is collision industry Business subframe；Otherwise, it determines this service subframe is not collision service subframe.

Preferably, first terminal determine this service subframe the second jamming power reach the second thresholding after, signal prison Unit 500 is listened to be further used for:

Business datum received in this service subframe is parsed, after determining successfully resolved,

Judge whether the business datum is periodicity sending according to parsing result, if so, determining to need for this A service subframe reports collision instruction information；Otherwise, it is determined that not needing to report collision instruction information for this service subframe.

Preferably, signal monitoring unit 500 is further used for:

It is collided respectively in each of current frame period and carries out signal monitoring in instruction subframe, receive the transmission of other terminals Collision indicate information, wherein within a frame period, collision instruction subframe time-domain position service subframe time-domain position Before or after, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

Preferably, within a frame period, the frequency domain bandwidth that all collision instruction subframes occupy is contained in all business In the frequency domain bandwidth that frame occupies.

Preferably, further, the frequency domain bandwidth that all collision instruction subframes occupy is the frequency that all service subframes occupy The half of domain bandwidth.

In such manner, it is possible to the signal reception power of more acurrate more easily clearing collision instruction information.

Preferably, determining that collision corresponding to each collision service subframe refers to respectively according to preset mapping relations When showing subframe, mapping indicating unit 501 is specifically used for:

According to preset mapping relations, determine that each corresponding indicating unit of collision service subframe belonged to touches respectively Instruction subframe is hit, which is used to carry the collision instruction information of corresponding collision service subframe；Wherein, a collision refers to Show to include the indicating unit for setting number in subframe, an indicating unit includes an orthogonal frequency division multiplexi OFDM symbol Number, alternatively, including half of OFDM symbol.

Preferably, determining this corresponding each service subframe of collision instruction subframe after reaching a collision instruction subframe It is middle when colliding service subframe there are at least one, it is collided at this and sends this at least one collision service subframe in instruction subframe When collision instruction information, information transmitting unit 502 is specifically used for:

After first terminal reaches this collision instruction subframe, corresponding each business of this collision instruction subframe is being determined When colliding service subframe there are at least one in frame, the collision instruction information of at least one collision service subframe is write respectively Enter and is sent in corresponding indicating unit；Wherein, the transmission power that first terminal uses on an indicating unit is this The maximum available launch power of reception total power signal and the first terminal in the corresponding collision service subframe of indicating unit In minimum value.

In this way, avoiding when multiple terminals detect collision service subframe X, collision is sent with maximum transmission power and is referred to Show information, and cause the transmission power of collision instruction information excessive, and propagation distance is farther out, other terminals is caused to generate erroneous judgement The problem of.

Preferably, signal monitoring unit 500 is further used for:

Information is indicated according to the collision that the every other terminal received within the frame period is sent, and determines itself selected industry On indicating unit in collision instruction subframe corresponding to subframe of being engaged in, receives total power signal and be higher than preset third threshold value When, determine that itself selected service subframe collides, and select the service subframe of itself again.

Preferably, further comprising:

Terminal indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.

Based on the same inventive concept, as shown in fig.6, another terminal has also been devised in the embodiment of the present invention, comprising:

Processor 600 executes following process for reading the program in memory 620:

Carry out signal monitoring in each service subframe of non-self occupancy in current frame period respectively, wherein every A service subframe is reached, when determining that this service subframe is occupied, determines whether this service subframe is collision service subframe；

After current frame period, according to preset mapping relations, determine that each collision service subframe institute is right respectively The collision instruction subframe answered；

It is every to reach a collision instruction subframe, it determines and exists extremely in this corresponding each service subframe of collision instruction subframe When a few collision service subframe, is collided at this and at least one collision business is sent by transceiver 610 in instruction subframe The collision of subframe indicates information.

In this way, not having to using FI to other terminal notification resource using status, so that the expense of collision instruction information obtains Biggish compression, to reduce system operating load.

Preferably, processor 600 is specifically used for when determining that a service subframe is occupied:

The reception signal in this service subframe is obtained, and calculates reception total power signal；

When determining that receiving total power signal reaches preset first threshold value, determine that this service subframe is occupied.

Preferably, determining whether this service subframe is collision service subframe when determining that a service subframe is occupied When, processor 600 is specifically used for:

When determining that this service subframe is occupied, interference measurement is carried out based on signal is received, obtains jamming power；

Judge whether jamming power reaches preset second threshold value, if so, determining that this service subframe is collision industry Business subframe；Otherwise, it determines this service subframe is not collision service subframe.

Preferably, first terminal determine this service subframe the second jamming power reach the second thresholding after, processor 600 are further used for:

Business datum received in this service subframe is parsed, after determining successfully resolved,

Judge whether the business datum is periodicity sending according to parsing result, if so, determining to need for this A service subframe reports collision instruction information；Otherwise, it is determined that not needing to report collision instruction information for this service subframe.

Preferably, processor 600 is further used for:

It is collided respectively in each of current frame period and carries out signal monitoring in instruction subframe, receive the transmission of other terminals Collision indicate information, wherein within a frame period, collision instruction subframe time-domain position service subframe time-domain position Before or after, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

Preferably, within a frame period, the frequency domain bandwidth that all collision instruction subframes occupy is contained in all business In the frequency domain bandwidth that frame occupies.

Preferably, further, the frequency domain bandwidth that all collision instruction subframes occupy is the frequency that all service subframes occupy The half of domain bandwidth.

In such manner, it is possible to the signal reception power of more acurrate more easily clearing collision instruction information.

Preferably, determining that collision corresponding to each collision service subframe refers to respectively according to preset mapping relations When showing subframe, processor 600 is specifically used for:

According to preset mapping relations, determine that each corresponding indicating unit of collision service subframe belonged to touches respectively Instruction subframe is hit, which is used to carry the collision instruction information of corresponding collision service subframe；Wherein, a collision refers to Show to include the indicating unit for setting number in subframe, an indicating unit includes an orthogonal frequency division multiplexi OFDM symbol Number, alternatively, including half of OFDM symbol.

Preferably, determining this corresponding each service subframe of collision instruction subframe after reaching a collision instruction subframe It is middle when colliding service subframe there are at least one, it is collided at this and sends this at least one collision service subframe in instruction subframe When collision instruction information, information transmitting unit 502 is specifically used for:

After first terminal reaches this collision instruction subframe, corresponding each business of this collision instruction subframe is being determined When colliding service subframe there are at least one in frame, the collision instruction information of at least one collision service subframe is write respectively Enter and is sent in corresponding indicating unit；Wherein, the transmission power that first terminal uses on an indicating unit is this The maximum available launch power of reception total power signal and the first terminal in the corresponding collision service subframe of indicating unit In minimum value.

In this way, avoiding when multiple terminals detect collision service subframe X, collision is sent with maximum transmission power and is referred to Show information, and cause the transmission power of collision instruction information excessive, and propagation distance is farther out, other terminals is caused to generate erroneous judgement The problem of.

Preferably, processor 600 is further used for:

Information is indicated according to the collision that the every other terminal received within the frame period is sent, and determines itself selected industry On indicating unit in collision instruction subframe corresponding to subframe of being engaged in, receives total power signal and be higher than preset third threshold value When, determine that itself selected service subframe collides, and select the service subframe of itself again.

Preferably, further comprising:

Terminal indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.

Transceiver 610, for sending and receiving data under the control of processor 600.

Wherein, in Fig. 6, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 600 The various circuits for the memory that the one or more processors and memory 620 of representative represent link together.Bus architecture is also Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 610 can To be multiple element, that is, includes transmitter and receiver, the list for communicating over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 630, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loudspeaker, microphone, control stick etc..

Processor 600, which is responsible for management bus architecture and common processing, memory 620, can store processor 600 and is holding Used data when row operation.

In conclusion in the embodiment of the present invention, first terminal respectively in current frame period non-self occupancy it is each Signal monitoring is carried out in a service subframe, wherein one service subframe of every arrival, first terminal determine that this service subframe is occupied Used time determines whether this service subframe is collision service subframe, and after current frame period, first terminal is according to preset Mapping relations determine collision instruction subframe corresponding to each collision service subframe respectively, every to reach collision instruction Frame, first terminal determine that there are at least one to collide service subframe in this corresponding each service subframe of collision instruction subframe When, it is collided at this and correspondingly sends the collision instruction information for colliding service subframe in instruction subframe on corresponding indicating unit. In this way, by the way that instruction information will be collided individually using collision instruction subframe carrying, and do not have to carry using traditional FI, and will Each service subframe is mapped on the indicating unit of a collision instruction subframe, due to each indicating unit using 1 or Half of OFDM symbol carrying, the running time-frequency resource that indicating unit occupies is considerably less, the running time-frequency resource to occupy much smaller than service subframe, By taking a subframe includes 14 OFDM symbols and an indicating unit occupies half of OFDM symbol as an example, collision instruction information is opened Pin and the expense scale compression of business datum are to 1/14, so that the expense of collision instruction information obtains biggish compression, thus Reduction system operating load.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims (22)

1. a kind of indicating means of resource collision characterized by comprising

First terminal carries out signal monitoring in current frame period respectively in each service subframe of non-self occupancy, In, one service subframe of every arrival when first terminal determines that one service subframe is occupied, determines one business Whether frame is collision service subframe；

After current frame period, first terminal determines each collision service subframe according to preset mapping relations respectively Corresponding collision indicates subframe；

Every to reach a collision instruction subframe, first terminal determines the corresponding each service subframe of one collision instruction subframe It is middle that there are when at least one collision service subframe, indicate to send at least one described collision business in subframe in one collision The collision of subframe indicates information；

It wherein, in a frame period, include multiple indicating units, each service subframe in a collision instruction subframe There are mapping relations between the indicating unit in a collision instruction subframe；

The collision that at least one collision service subframe is sent in one collision instruction subframe indicates information, packet It includes:

According to the mapping relations between service subframe and indicating unit, in one collision instruction subframe with the collision industry The collision instruction information is sent in the corresponding indicating unit of business subframe.

2. the method as described in claim 1, which is characterized in that first terminal determines that a service subframe is occupied, specific to wrap It includes:

First terminal obtains the reception signal in one service subframe, and calculates reception total power signal；

When first terminal determines that the reception total power signal reaches preset first threshold value, one service subframe is determined It is occupied.

3. method according to claim 1 or 2, which is characterized in that when first terminal determines that a service subframe is occupied, sentence Whether fixed one service subframe is collision service subframe, comprising:

When first terminal determines that one service subframe is occupied, interference measurement is carried out based on signal is received, obtains interference function Rate；

First terminal judges whether the jamming power reaches preset second threshold value, if so, determining one business Subframe is collision service subframe；Otherwise, it determines one service subframe is not collision service subframe.

4. method as claimed in claim 3, which is characterized in that determine the second dry of one service subframe in first terminal It disturbs after power reaches the second thresholding, further comprises:

Business datum received in one service subframe is parsed, after determining successfully resolved, is tied according to parsing Fruit judges whether the business datum is periodicity sending, if so, determining to need to report for one service subframe Collision instruction information；Otherwise, it is determined that not needing to report collision instruction information for one service subframe.

5. method according to claim 1 or 2, which is characterized in that further comprise:

First terminal collides in each of current frame period carry out signal monitoring in instruction subframe respectively, receives other terminals The collision of transmission indicates information, wherein within a frame period, collision indicates time domain of the time-domain position in service subframe of subframe Before or after position, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

6. method as claimed in claim 5, which is characterized in that within a frame period, what all collision instruction subframes occupied Frequency domain bandwidth is contained in the frequency domain bandwidth that all service subframes occupy.

7. method as claimed in claim 6, which is characterized in that further, the frequency domain band that all collision instruction subframes occupy Width is the half for the frequency domain bandwidth that all service subframes occupy.

8. method as claimed in claim 5, which is characterized in that first terminal determines every respectively according to preset mapping relations Collision corresponding to one collision service subframe indicates subframe, comprising:

First terminal determines that each corresponding indicating unit of collision service subframe is belonged to according to preset mapping relations respectively Collision indicate subframe, the indicating unit is used to carry the collision instruction information of corresponding collision service subframe；Wherein, one It include the indicating unit for setting number in collision instruction subframe, an indicating unit includes an orthogonal frequency division multiplexi OFDM symbol, alternatively, including half of OFDM symbol.

9. method according to claim 8, which is characterized in that after reaching a collision instruction subframe, first terminal determines institute It states in the corresponding each service subframe of a collision instruction subframe there are when at least one collision service subframe, is touched one Hit the collision instruction information that at least one collision service subframe is sent in instruction subframe, comprising:

After first terminal reaches one collision instruction subframe, the corresponding each industry of one collision instruction subframe is being determined When colliding service subframe there are at least one in subframe of being engaged in, by the collision instruction information point of at least one collision service subframe It is not written in corresponding indicating unit and is sent；Wherein, the transmission power that first terminal uses on an indicating unit is Corresponding the receive total power signal and the maximum of the first terminal collided in service subframe of one indicating unit can be used Minimum value in transmission power.

10. method as claimed in claim 8 or 9, which is characterized in that further comprise:

First terminal indicates information according to the collision that the every other terminal received within the frame period is sent, and determines itself On indicating unit in collision instruction subframe corresponding to selected service subframe, receives total power signal and be higher than preset third When threshold value, determine that itself selected service subframe collides, and select the service subframe of itself again.

11. such as the described in any item methods of claim 1,2,4,6~9, which is characterized in that further comprise:

First terminal indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.

12. a kind of instruction device of resource collision characterized by comprising

Signal monitoring unit, for carrying out signal in each service subframe of non-self occupancy in current frame period respectively It monitors, wherein one service subframe of every arrival when determining that one service subframe is occupied, determines one business Whether frame is collision service subframe；

Indicating unit is mapped, for according to preset mapping relations, determining each collision respectively after current frame period Collision corresponding to service subframe indicates subframe；

Information transmitting unit reaches a collision instruction subframe for every, determines that one collision instruction subframe is corresponding each When colliding service subframe there are at least one in a service subframe, described at least one is sent in one collision instruction subframe The collision of a collision service subframe indicates information；

It wherein, in a frame period, include multiple indicating units, each service subframe in a collision instruction subframe There are mapping relations between the indicating unit in a collision instruction subframe；

It is described when the collision for sending at least one collision service subframe in one collision instruction subframe indicates information Information transmitting unit is specifically used for:

According to the mapping relations between service subframe and indicating unit, in one collision instruction subframe with the collision industry The collision instruction information is sent in the corresponding indicating unit of business subframe.

13. device as claimed in claim 12, which is characterized in that when determining that a service subframe is occupied, the signal Monitoring unit is specifically used for:

The reception signal in one service subframe is obtained, and calculates reception total power signal；

When determining that the reception total power signal reaches preset first threshold value, determine that one service subframe is occupied.

14. device as described in claim 12 or 13, which is characterized in that when determining that a service subframe is occupied, determine When whether one service subframe is collision service subframe, the signal monitoring unit is specifically used for:

When determining that one service subframe is occupied, interference measurement is carried out based on signal is received, obtains jamming power；

Judge whether the jamming power reaches preset second threshold value, if so, determining that one service subframe is to touch Hit service subframe；Otherwise, it determines one service subframe is not collision service subframe.

15. device as claimed in claim 14, which is characterized in that determine the second of one service subframe in first terminal After jamming power reaches the second thresholding, the signal monitoring unit is further used for:

Business datum received in one service subframe is parsed, after determining successfully resolved,

Judge whether the business datum is periodicity sending according to parsing result, if so, determining to need for described one A service subframe reports collision instruction information；Otherwise, it is determined that not needing to report collision instruction letter for one service subframe Breath.

16. device as described in claim 12 or 13, which is characterized in that the signal monitoring unit is further used for:

It is collided respectively in each of current frame period and carries out signal monitoring in instruction subframe, receive touching for other terminals transmission Hit instruction information, wherein within a frame period, the time-domain position of collision instruction subframe is before the time-domain position of service subframe Or later, alternatively, the time-domain position of collision instruction subframe and the time-domain position of service subframe are alternatively arranged.

17. device as claimed in claim 16, which is characterized in that within a frame period, all collision instruction subframes occupy Frequency domain bandwidth be contained in the frequency domain bandwidth that all service subframes occupy.

18. device as claimed in claim 17, which is characterized in that further, the frequency domain that all collision instruction subframes occupy Bandwidth is the half for the frequency domain bandwidth that all service subframes occupy.

19. device as claimed in claim 16, which is characterized in that according to preset mapping relations, determine each respectively When colliding the instruction subframe of collision corresponding to service subframe, the mapping indicating unit is specifically used for:

According to preset mapping relations, the collision for determining that each corresponding indicating unit of collision service subframe is belonged to respectively refers to Show subframe, the indicating unit is used to carry the collision instruction information of corresponding collision service subframe；Wherein, a collision instruction It include the indicating unit for setting number in subframe, an indicating unit includes an orthogonal frequency division multiplexi OFDM symbol, Alternatively, including half of OFDM symbol.

20. device as claimed in claim 19, which is characterized in that after reaching a collision instruction subframe, determine one When colliding service subframe there are at least one in the corresponding each service subframe of collision instruction subframe, indicated in one collision When sending the collision instruction information of at least one collision service subframe in subframe, the information transmitting unit is specifically used for:

After first terminal reaches one collision instruction subframe, the corresponding each industry of one collision instruction subframe is being determined When colliding service subframe there are at least one in subframe of being engaged in, by the collision instruction information point of at least one collision service subframe It is not written in corresponding indicating unit and is sent；Wherein, the transmission power that first terminal uses on an indicating unit is Corresponding the receive total power signal and the maximum of the first terminal collided in service subframe of one indicating unit can be used Minimum value in transmission power.

21. the device as described in claim 19 or 20, which is characterized in that the signal monitoring unit is further used for:

Information is indicated according to the collision that the every other terminal received within the frame period is sent, and determines itself selected industry On indicating unit in collision instruction subframe corresponding to subframe of being engaged in, receives total power signal and be higher than preset third threshold value When, determine that itself selected service subframe collides, and select the service subframe of itself again.

22. such as the described in any item devices of claim 12,13,15,17~20, which is characterized in that further comprise:

Described device indicates subframe with other terminal multiplexing service subframes and corresponding collision using frequency division manner.