CN105101431A

CN105101431A - Device-to-Device communication method, apparatus and system

Info

Publication number: CN105101431A
Application number: CN201410510078.8A
Authority: CN
Inventors: 吴栓栓; 袁弋非; 张峻峰; 贺海港; 黄双红
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2014-05-07
Filing date: 2014-09-28
Publication date: 2015-11-25
Anticipated expiration: 2034-09-28
Also published as: WO2016045442A1; CN105101431B

Abstract

The invention discloses a device-to-device (D2D) communication method, apparatus and system, wherein the method includes: receiving a first resource configuration message of the D2D from a network node, and determining D2D resource sets according to the first resource configuration message; and transmitting device to D2D signals in the resource sets, wherein the resource sets are distributed periodically, and each resource period includes a plurality of resource units divided by a time division multiplexing mode and/or a frequency division multiplexing mode.

Description

A kind of device-to-device communication means, Apparatus and system

Technical field

The present invention relates to device-to-device (D2D) communication technology in moving communicating field, particularly relate to a kind of D2D communication means, Apparatus and system.

Background technology

In a cellular communication system, as two subscriber equipment (UE, when having business to transmit UserEquipment), when UE1 and UE2 be positioned at same cellular cell and at a distance of nearer time, although two UE are by the MPS process of same base station, still need by core net transfer during transfer of data, and a data transfer still can consume the radio spectrum resources on two links.Visible, above-mentioned cellular communication method is not obviously optimum.Along with the variation of mobile communication business, such as, the application such as social networks, E-Payment in a wireless communication system universal, makes the business closely between user transmit demand growing.The communication pattern of device-to-device (D2D, Device-to-Device) is subject to extensive concern day by day.For the user of short-range communication, D2D not only saves radio spectrum resources, and reduces the transfer of data pressure of core net.

In cellular communications, when two UE communication, generally UE can not know the position of the other side UE, but sets up the connection of two UE by network equipment (base station or equipment of the core network).And for D2D communication, the prerequisite setting up communication link is the mutual discovery between UE, namely there is between UE contiguous relation.A kind of mode realizing device discovery is completed by the transmission of device discovery signal and detection.And the performance of device discovery is relevant to the load of device discovery signal.Such as, when the load of device discovery signal is larger, how to ensure or the performance that improves device discovery is problem demanding prompt solution in current correlation technique.In addition, in device-to-device communication process, need transmitting terminal control channel (controlsignaling, or be called dispatching distribution, schedulingassignment) to indicate associated data channel.And the send mode of this control signal is also the problem needing in correlation technique to consider.

Summary of the invention

For solving the problems of the technologies described above, the invention provides a kind of D2D communication means, Apparatus and system.

Embodiments provide a kind of D2D communication means, described method comprises:

D2D first resource configuration messages is received from network node;

D2D resource collection is determined according to described first resource configuration messages;

Described equipment is sent to D2D signal in described resource collection;

Wherein, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period.

In such scheme, described method also comprises:

From described resource collection, determine the position of the private resource unit sending D2D signal, and send described D2D signal in described private resource unit;

Wherein, described private resource unit comprises according to the multiple Resource Units of preset rules in time-domain and/or the discrete distribution of frequency domain;

The mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

Frequency location and the time location of described multiple Resource Unit are discontinuous.

In such scheme, determine the position of the private resource unit sending described D2D signal, comprising:

Determine the position of the virtual resource transmitting described D2D signal, and determine the position of the private resource unit transmitting described D2D signal according to the position of described virtual resource.

In such scheme, determine the virtual resource position of transmitting described D2D signal, comprising:

From virtual resource candidate collection, the position of virtual resource unit described in Stochastic choice;

Or,

Receive D2D Secondary resource configuration messages from network node, wherein, described Secondary resource configuration messages is at least used to indicate the position of described virtual resource.

Determine transmitting the position of particular resource unit in multiple Resource Units of described D2D signal, and determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal according to the position of described particular resource unit and described preset rules, using the position of the position of the position of described particular resource unit and other Resource Units described as described private resource.

In such scheme, determine transmitting the position of particular resource unit in multiple Resource Units of described D2D signal, comprising:

The position of particular resource unit described in Stochastic choice in Resource Unit candidate collection;

Or,

From network node receiving equipment to equipment Secondary resource configuration messages, described Secondary resource configuration messages is at least used to indicate the position of described particular resource unit.

In such scheme, described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

Wherein, described K is the number of the frequency domain available resource units communicated for described device-to-device, and m is for transmitting the Resource Unit number of described D2D signal in a described resource period.

In such scheme, described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L/n;

Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L1/2;

Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L1/n;

Wherein, described L is the number of time-domain available resource units in the resource period that communicates for described device-to-device, L1 is the number of the time-domain available resource units of each resource grouping in the resource period that communicates for described device-to-device, and n is the described private resource number of unit for described D2D Signal transmissions in a resource period.

In such scheme, described method also comprises:

According to the described private resource number of unit in a resource period, the Resource Unit in described resource period is divided into groups in time domain, make each Resource Unit divide into groups in the number, identical with the described private resource number of unit for described D2D Signal transmissions of time domain available resource units;

Described Resource Unit is used for D2D Signal transmissions; The transmission in a described resource grouping of described D2D signal.

In such scheme, described method also comprises:

According to position (l, k) and the described preset rules of described particular resource unit, determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal;

Wherein, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

Described preset rules is: the time location transmitting i-th Resource Unit of described D2D signal is mod (l+ (i-1) * L/m, L), or mod (l+ (i-1) * L1/m, L1), or l, or l+i-1;

And/or the frequency location transmitting i-th Resource Unit of described D2D signal is mod (k+ (i-1) * K/m, K), or mod (k+mod (i-1,2) * K/2, K), or k;

Wherein, i is the positive integer being less than or equal to m.

In such scheme, described D2D signal is find the physical channel of signal for the discovery signal of device discovery or carrying; Or,

Described D2D signal is for the control signal of devices communicating or Scheduling assistance information or the physical channel carrying described control signal or information.

In such scheme, the Resource Unit in described resource period comprises the grouping of multiple resource in time domain;

Each described resource grouping comprises the transmission of the signal that time domain continuous print subframe communicates for described device-to-device;

Resource described in each is divided into groups discrete distribution and in a resource period, and the described number of sub frames in different resource grouping is identical.

In such scheme, the mode of the determination of the number of described time domain continuous print subframe comprise following one of at least:

Described continuous subframes number is not more than the length at up link semi-continuous scheduling interval, and described semi-continuous scheduling is spaced apart the minimum value at the semi-continuous scheduling interval that cellular communication system allows;

The number of described continuous subframes is not more than the two-way time of uplink hybrid automatic repeat request;

The number of described continuous subframes is not more than continuous print sub-frame of uplink number in the subframe uplink-downlink configuration 0 of time division duplex cellular communication system;

The number of described continuous subframes is not more than continuous print sub-frame of uplink number in the subframe uplink-downlink configuration 3 of time division duplex cellular communication system;

The number of described continuous subframes is not more than continuous print sub-frame of uplink number in the subframe uplink-downlink configuration that time division duplex cellular communication system configures.

The real-time example of the present invention additionally provides a kind of D2D communication means, and described method comprises:

Generate D2D first resource configuration messages;

Send described D2D first resource configuration messages to D2D user equipment (UE); Described first resource configuration messages is at least for distributing D2D resource collection, and described resource collection is used for the Signal transmissions of described device-to-device communication;

Wherein, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Described resource collection is used for D2D subscriber equipment and sends D2D signal.

In such scheme, described method also comprises: send D2D Secondary resource configuration messages;

Wherein, described Secondary resource configuration messages comprises: the position of particular resource unit in multiple Resource Units of the described D2D signal of instruction transmission; Or, the position of instruction virtual resource, the position of described virtual resource and for transmit described D2D signal multiple Resource Units between there are default mapping relations.

In such scheme, described Secondary resource configuration messages comprises: time-domain resource indication parameter and frequency domain resource indication parameter;

Wherein, described time-domain resource indication parameter is used for the time-domain position indicating particular resource unit in the multiple Resource Units transmitting described D2D signal in a resource period to subscriber equipment;

Described frequency domain resource indication parameter is used for the frequency domain position indicating particular resource unit in the multiple Resource Units transmitting described D2D signal in a resource period to subscriber equipment;

Described frequency domain resource indication parameter is indicated by the form of index or bitmap;

Described time-domain resource indication parameter is indicated by the form of index, and the maximum of described index is Kt-1 or Kt/m-1 or Kt or Kt/m;

Wherein, the time domain maximum D2D available resource units number of Kt for allowing in time domain D2D available resource units sum in resource period or resource period, m is that described D2D signal transmits shared D2D Resource Unit number in a resource period.

The configuration messages of D2D resource is received from network node;

The resource collection of described D2D communication is determined according to described configuration messages;

D2D signal is detected in described resource collection;

Wherein, described configuration messages is at least used to indicate the resource collection detecting described D2D signal, and described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Accordingly, in a resource period, described D2D signal transmits in multiple Resource Unit, and described multiple Resource Unit according to preset rules in time-domain and/or the discrete distribution of frequency domain.

In such scheme, described frequency domain is discrete, and to be distributed as the frequency location that described multiple Resource Unit takies discontinuous;

Described time-domain is discrete, and to be distributed as the time-domain position that described multiple Resource Unit takies discontinuous;

Described frequency domain and time-domain discrete be distributed as frequency domain position that described multiple Resource Unit takies and time location all discontinuous.

In such scheme, divide into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions;

Described Resource Unit is used for D2D Signal transmissions.

In such scheme, determine transmitting the position of particular resource unit in multiple Resource Units of described D2D signal;

According to position and the described preset rules of described particular resource unit, determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal;

Described D2D signal is detected in described specific resources resource and other Resource Units described.

In such scheme, according to the position (l of described particular resource unit, and described preset rules k), determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

And/or,

The frequency location transmitting i-th Resource Unit of described D2D signal is mod (k+ (i-1) * K/m, K), or mod (k+mod (i-1,2) * K/2, K), or k;

Wherein, i is the positive integer being less than or equal to m.

Embodiments provide a kind of subscriber equipment, comprising:

First communication unit, for receiving D2D first resource configuration messages from network node;

Baseband processing unit, for determining D2D resource collection according to described first resource configuration messages;

Second communication unit, for sending the signal of described device-to-device communication in described D2D resource collection;

Wherein, described resource collection is used for the Signal transmissions of described device-to-device communication; Described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period.

In such scheme, described second communication unit, for sending described D2D signal in described private resource unit;

Accordingly, described baseband processing unit, also for from described resource collection, determines the position of the private resource unit sending D2D signal;

Wherein, described private resource unit is according to the multiple Resource Units of preset rules in time-domain and/or the discrete distribution of frequency domain;

The mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

In such scheme, described baseband processing unit, specifically for determining the position of the virtual resource transmitting described D2D signal, and determine the position of position as described private resource unit of the multiple Resource Units transmitting described D2D signal according to the position of described virtual resource.

In such scheme, described baseband processing unit, specifically for from virtual resource candidate collection, the position of virtual resource unit described in Stochastic choice;

Or,

Receive D2D Secondary resource configuration messages by the first communication unit from network node, wherein, described Secondary resource configuration messages is at least used to indicate the position of described virtual resource.

In such scheme, described baseband processing unit, specifically for determine transmitting described D2D signal multiple Resource Units in the position of particular resource unit, and determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal according to the position of described particular resource unit and described preset rules, using the position of the position of the position of described particular resource unit and other Resource Units described as described private resource.

In such scheme, described baseband processing unit, specifically for the position of particular resource unit described in Stochastic choice from Resource Unit candidate collection;

Or,

By the first communication unit from network node receiving equipment to equipment Secondary resource configuration messages, described Secondary resource configuration messages is at least used to indicate the position of described particular resource unit.

In such scheme, described baseband processing unit, also for dividing into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, make each Resource Unit divide into groups in the number, identical with the described private resource number of unit for described D2D Signal transmissions of time domain available resource units;

In such scheme, described baseband processing unit, also for according to the position (l, k) of described particular resource unit and described preset rules, determines transmitting the position of other Resource Units in multiple Resource Units of described D2D signal;

Wherein, i is the positive integer being less than or equal to m.

Described D2D signal be for the control signal of devices communicating or Scheduling assistance information transmission signal or carry the physical channel of described signal.

Embodiments provide a kind of network node, comprising:

Configuration module, for generating D2D first resource configuration messages; Described first resource configuration messages is at least for distributing D2D resource collection, and described resource collection is used for the Signal transmissions of described device-to-device communication; Wherein, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Described resource collection is used for D2D subscriber equipment and sends D2D signal;

Sending module, for sending described D2D first resource configuration messages to D2D user equipment (UE).

In such scheme, described sending module, also for sending D2D Secondary resource configuration messages;

Wherein, described Secondary resource configuration messages comprises the position of first Resource Unit of multiple Resource Units of the described D2D signal of instruction transmission; Or, the position of instruction virtual resource, the position of described virtual resource and for transmit described D2D signal multiple Resource Units between there are default mapping relations.

Embodiments provide a kind of subscriber equipment, comprising:

First communication module, for receiving the configuration messages of D2D resource from network node; Wherein, described configuration messages at least comprises: indicate the resource collection for detecting described D2D signal, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Accordingly, in a resource period, described D2D signal transmits in multiple Resource Unit, and described multiple Resource Unit according to preset rules in time-domain and/or the discrete distribution of frequency domain;

Baseband processing module, for determining the resource collection that described D2D communicates according to described configuration messages;

Second communication module, for detecting D2D signal in described resource collection.

In such scheme, described preset rules is: be K/2 for transmitting the frequency domain location interval of the Resource Unit of described D2D signal; Or, be K/m for transmitting the frequency domain location interval of multiple Resource Units of described D2D signal;

Wherein, described K is the number of the frequency domain available resource units for device-to-device communication, and m is for transmitting the Resource Unit number of described D2D signal in a resource period.

In such scheme, described preset rules is: be L/2 for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

Or, be L/n for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

Or, be L1/2 for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

Or, be L1/n for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

Wherein, described L is the number of time-domain available resource units in the resource period for device-to-device communication, L1 is the number of the time-domain available resource units of each resource grouping in the resource period for device-to-device communication, and n is the Resource Unit number for described D2D Signal transmissions in a resource period.

In such scheme, described baseband processing module, specifically for dividing into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions; Described Resource Unit is used for D2D Signal transmissions.

In such scheme, described baseband processing module, specifically for determine transmitting described D2D signal multiple Resource Units in the position of particular resource unit; According to position and the described preset rules of described particular resource unit, determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal; Described D2D signal is detected in described specific resources resource and other Resource Units described.

In such scheme, described baseband processing module, specifically for the position (l according to described particular resource unit, and described preset rules k), determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

And/or,

Wherein, i is the positive integer being less than or equal to m.

Embodiments provide a kind of device-to-device communication system, described system comprises:

Subscriber equipment, for receiving D2D first resource configuration messages from network node; According to described first resource configuration messages, determine the resource transmitting D2D signal;

Network node, for generating D2D first resource configuration messages; Send described D2D first resource configuration messages to D2D subscriber equipment.

D2D communication means provided by the present invention, Apparatus and system, the configuration messages that can issue according to network node is determined to transmit the resource finding signal, thus in described resource, send described D2D discovery signal, so, just can solve the transmission problem of device discovery signal and control signal when device-to-device communicates, and methods described herein can under the prerequisite not increasing terminal implementation complexity and signaling consumption, make device-to-device signal acquisition frequency diversity and/or time diversity gain, thus obviously improve the transmission performance of described signal or signaling; On the other hand, in method provided by the present invention, by dividing into groups to the resource collection in device-to-device resource period, can ensure as while device-to-device allocation of communications resource, ensureing the compatibility of D2D communication and cellular link uplink communication.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention device-to-device communication means schematic flow sheet one;

Fig. 2 is embodiment of the present invention device-to-device communication means schematic flow sheet two;

Fig. 3 is embodiment of the present invention device-to-device communication means schematic flow sheet three;

Fig. 4 is the partition structure schematic diagram of the communication resource;

Fig. 5 is the network design schematic diagram of cellular radio Communication system;

Fig. 6 is the example one of D2D resource distribution;

Fig. 7 is the example two of D2D resource distribution;

Fig. 8 is the example three of D2D resource distribution;

Fig. 9 is the example four of D2D resource distribution;

Figure 10 is the example five of D2D resource distribution;

Figure 11 is the example six of D2D resource distribution;

Figure 12 is the example seven of D2D resource distribution;

Figure 13 is the example eight of D2D resource distribution;

Figure 14 is the example nine of D2D resource distribution;

Figure 15 is the example ten of D2D resource distribution;

Figure 16 is the example 11 of D2D resource distribution;

Figure 17 is the example 12 of D2D resource distribution;

Figure 18 is the example 13 of D2D resource distribution;

The system composition structural representation that Figure 19 provides for the embodiment of the present invention;

The network node composition structural representation that Figure 20 provides for the embodiment of the present invention;

The subscriber equipment composition structural representation that Figure 21 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.

Embodiment of the method one,

Present embodiments provide a kind of device-to-device communication means, as shown in Figure 1, comprising:

Step 101: receive D2D first resource configuration messages from network node;

Step 102: determine D2D resource collection according to described first resource configuration messages;

Step 103: send described equipment to D2D signal in described resource collection.

Described step 103 is specifically as follows from described resource collection, determines the position of the private resource unit sending D2D signal, and send described D2D signal in described private resource unit.

Here, described resource collection is used for the Signal transmissions of described device-to-device communication; Described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period.

The mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

Preferably, the above-mentioned position determining the private resource unit sending described D2D signal, can comprise: the position determining the virtual resource transmitting described D2D signal, and determine the position of position as described private resource unit of the multiple Resource Units transmitting described D2D signal according to the position of described virtual resource.

Wherein, described in determine the virtual resource position of transmitting described D2D signal, comprising:

From virtual resource candidate collection, the position of virtual resource unit described in Stochastic choice; Or receive D2D Secondary resource configuration messages from network node, wherein, described Secondary resource configuration messages is at least used to indicate the position of described virtual resource.

Wherein, described virtual resource candidate collection corresponds in described resource collection, the device-to-device communication resource in a resource period; Or in described resource collection, the device-to-device communication resource in a resource grouping in a resource period.

Preferably, the above-mentioned position determining the private resource unit sending described D2D signal, can comprise: the position determining transmitting particular resource unit in multiple Resource Units of described D2D signal, and determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal according to the position of described particular resource unit and described preset rules, using the position of the position of the position of described particular resource unit and other Resource Units described as described private resource.

Wherein, determine transmitting the position of particular resource unit in multiple Resource Units of described D2D signal, comprising: the position of particular resource unit described in Stochastic choice in Resource Unit candidate collection; Or from network node receiving equipment to equipment Secondary resource configuration messages, described Secondary resource configuration messages is at least used to indicate the position of described particular resource unit.

Resource Unit candidate collection is in described resource collection, the device-to-device communication resource in a resource period; Or in described resource collection, the device-to-device resource in a resource grouping in a resource period.

Preferably, described preset rules can be: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m; Wherein, described K is the number of the frequency domain available resource units for device-to-device communication, and m is for transmitting the Resource Unit number of described D2D signal in a resource period.

Preferably, described preset rules can also be: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

Described D2D signal is find the physical channel of signal for the discovery signal of device discovery or carrying; Or described D2D signal is for the control signal of devices communicating or Scheduling assistance information or the physical channel carrying described control signal or information.

Described default mapping mode is the position of particular resource unit described in Stochastic choice or the position of described virtual resource unit; Or receiving equipment, to equipment Secondary resource configuration messages, determines the position of described particular resource unit or the position of described virtual resource according to the instruction of described Secondary resource configuration messages.

Resource Unit in described resource period comprises the grouping of multiple resource in time domain; Each described resource grouping comprises the transmission of the signal that time domain continuous print subframe communicates for described device-to-device;

The mode of the determination of the number of described time domain continuous print subframe comprise following one of at least:

Preferably, above-mentioned method of dividing into groups to described Resource Unit specifically can comprise: divide into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit for described D2D Signal transmissions in a resource period, and the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions; The transmission in a described resource grouping of described D2D signal.Described Resource Unit is used for D2D Signal transmissions; The transmission in a described resource grouping of described D2D signal.

Described method also comprises: according to position (l, k) and the described preset rules of described particular resource unit, determines transmitting the position of other Resource Units in multiple Resource Units of described D2D signal; Wherein, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

And/or the frequency location transmitting i-th Resource Unit of described D2D signal is mod (k+ (i-1) * K/m, K), or mod (k+mod (i-1,2) * K/2, K), or k; Wherein, i is the positive integer being less than or equal to m.

It should be noted that, " first " in " first Resource Unit " mentioned here is a logical concept, just for the ease of the description of scheme.In theory, any one Resource Unit transmitting described D2D signal can be " first Resource Unit ".

Embodiment of the method two,

Present embodiments provide a kind of device-to-device communication means, as shown in Figure 2, comprising:

Step 201: generate D2D first resource configuration messages;

Step 202: send described D2D first resource configuration messages to D2D subscriber equipment (UE), described first resource configuration messages is at least for distributing D2D resource collection, and described resource collection is used for the Signal transmissions of described device-to-device communication.Wherein, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Described resource collection is used for D2D subscriber equipment and sends D2D signal.

Described resource collection is used for D2D user device transmissions D2D signal, comprising: D2D subscriber equipment, from described resource collection, determines the position of the private resource unit sending D2D signal, and send described D2D signal in described private resource unit;

Wherein, the mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

Preferably, described preset rules can be: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

Preferably, while performing step 201-step 202, or before or after performing step 202, described method can also comprise: send D2D Secondary resource configuration messages;

Wherein, described Secondary resource configuration messages comprises the position of particular resource unit in the multiple Resource Unit of multiple Resource Units of the described D2D signal of instruction transmission; Or, the position of instruction virtual resource, the position of described virtual resource and for transmit described D2D signal multiple Resource Units between there are default mapping relations.

Preferably, described Secondary resource configuration messages can also comprise: time-domain resource indication parameter and frequency domain resource indication parameter;

Described frequency domain resource indication parameter is used for the time-domain position indicating particular resource unit in the multiple Resource Units transmitting described D2D signal in a resource period to subscriber equipment;

Described time-domain resource indication parameter is indicated by the form of index, and the maximum of described index is Kt-1 or Kt/m-1 or Kt or Kt/m-1;

For described index, can from 0 value, or from 1 value.When such as index maximum is Kt-1 or Kt/m-1, value from 0; When index maximum is Kt or Kt/m-1, value from 1.

Resource Unit in described resource period comprises the grouping of multiple resource in time domain;

Embodiment of the method three,

Present embodiments provide a kind of device-to-device communication means, as shown in Figure 3, described method comprises:

Step 301: the configuration messages receiving D2D resource from network node;

Step 302: the resource collection determining described D2D communication according to described configuration messages;

Step 303: detect D2D signal in described resource collection.

Wherein, described configuration messages at least comprises: indicate the resource collection for detecting described D2D signal, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Accordingly, in a resource period, described D2D signal transmits in multiple Resource Unit, and described multiple Resource Unit according to preset rules in time-domain and/or the discrete distribution of frequency domain.

Wherein, discrete to be distributed as the frequency location that described multiple Resource Unit takies discontinuous for described frequency domain; Described time-domain is discrete, and to be distributed as the time-domain position that described multiple Resource Unit takies discontinuous; Described frequency domain and time-domain discrete be distributed as frequency domain position that described multiple Resource Unit takies and time location all discontinuous.

Described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

Described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

Preferably, divide into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions; Described Resource Unit is used for D2D Signal transmissions.

Preferably, described method also comprises: the position determining transmitting particular resource unit in multiple Resource Units of described D2D signal; According to position and the described preset rules of described particular resource unit, determine the position of other Resource Units; Described D2D signal is detected in described specific resources resource and other Resource Units described.

According to the position (l of described particular resource unit, and described preset rules k), determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

And/or,

Wherein, i is the positive integer being less than or equal to m.

Embodiment of the method four,

Each embodiment provided in the present invention is all applicable to cellular radio Communication system or network.Common cellular radio Communication system can based on CDMA (CodeDivisionMultiplexingAccess, code division multiple access) technology, FDMA (FrequencyDivisionMultiplexingAccess, frequency division multiple access) technology, OFDMA (Orthogonal-FDMA, OFDM) technology, SC-FDMA (SingleCarrier-FDMA, single-carrier frequency division multiple access) technology etc.Such as, 3GPP (3rdGenerationPartnershipProject) LTE (LongTermEvolution, Long Term Evolution)/LTE-A (LTE-Advanced, senior Long Term Evolution) cellular communication system down link (or being called forward link) is based on OFDMA technology, and up link (or being called reverse link) is based on SC-FDMA multiple access technology.Following then likely support on a link mix multiple access technology.

In OFDMA/SC-FDMA system, when the Radio Resource (RadioResource) for communicating is-form of frequency bidimensional.Such as, for LTE/LTE-A system, the communication resource of uplink and downlink link is all for unit divides with radio frames (radioframe) on time orientation, each radio frames (radioframe) length is 10ms, comprise the subframe (sub-frame) that 10 length are 1ms, each subframe comprises two time slots (slot) that length is 0.5ms, as shown in Figure 4.And different according to the configuration of Cyclic Prefix (CyclicPrefix, CP), each time slot can comprise 6 or 7 OFDM or SC-FDM symbols.

In frequency direction, resource with subcarrier (subcarrier) for unit divide, specifically in the communications, the least unit that frequency domain resource is distributed is RB (ResourceBlock, Resource Block), a PRB (PhysicalRB, Physical Resource Block) of corresponding physical resource.A PRB comprises 12 subcarriers (sub-carrier) at frequency domain, corresponding to a time slot (slot) of time domain.Two PRB that in subframe, time domain is adjacent are called that PRB is to (PRBpair).On each OFDM/SC-FDM symbol, the resource of a corresponding subcarrier is called resource element (ResourceElement, RE).

Figure 5 shows that the network design schematic diagram of cellular radio Communication system.Can be 3GPPLTE/LTE-A system shown in figure, or other cellular radio Communication technology.In the Access Network of cellular radio Communication system, the network equipment generally comprises the base station (basestation of some, or be called Node B, NodeB, or the Node B of evolution, evolvedNodeB, eNB, or the Node B strengthened, enhancedNodeB, and other network entity (networkentity) or network element (networkelement) eNB).Or, in short, network side (E-UTRAN, EvolvedUniversalTerrestrialRadioAccessNetwork, the universal terrestrial access network of evolution) also can be referred to as in 3 gpp.

Base station mentioned here also comprises the low power nodes (LowPowerNode, LPN) in network, such as Femto cell or Home eNodeB (pico, Relay, femto, HeNB and HomeeNB etc.) etc., also can unite and be called small-cell (smallcell).

Simple for describing, merely illustrate 3 base stations 51 in Fig. 5.Base station provides certain wireless signal coverage, terminal in this coverage (terminal, or be called subscriber equipment 52, UserEquipment, UE, or device) radio communication can be carried out with this base station.Wherein, the wireless signal overlay area of a base station may be divided into one or more community cell or sector sector based on some criterion, such as may Shi Sange community.

Device discovery is the key technology in D2D communication, and first the UE namely carrying out D2D communication needs to realize mutual discovery, and the discovery or the D2D that are called D2D communication herein find or device discovery.Herein, device discovery is by finding the transmission of signal (DiscoverySignal) and detecting realization between subscriber equipment.In execution mode described in the invention, find that signal comprises message (message) part, the load (payload) of the discovery signal that described message part carries can affect the performance of device discovery.Such as, larger load may cause the code check finding signal to improve, and therefore may cause finding hydraulic performance decline.

When find signal load larger time, can for find Signal transmissions distribute more multiple resource to ensure its performance.For convenience of description, our define equipment is to the Resource Unit (resourceunit) of devices communicating below, and each Resource Unit comprises 1 or multiple PRB.Such as, a Resource Unit can comprise 1 PRB couple, or 2 PRB couple.When comprising 2 PRB couple, these 2 PRB are to can be continuous in time domain, or continuous at frequency domain.When only having 1 PRB couple in described Resource Unit, the Resource Unit implication right with PRB is consistent.

Under scene as shown in Figure 5, the UE side operating process of D2D communication means in the present embodiment, can comprise: subscriber equipment (UE, UserEquipment) receives D2D resource distribution message, and determines the resource of D2D Signal transmissions according to described configuration messages; Described UE sends D2D signal in described resource.

Wherein, described configuration messages is at least used to indicate the resource collection transmitting described D2D signal, and described device-to-device resource collection has resource period, the resource in each described cycle by with the model split of time division multiplexing and/or frequency division multiplexing for Resource Unit.

Such as, the network equipment (as base station) sends the configuration messages of the resource collection being used to indicate transmission D2D signal, and subscriber equipment receives this configuration messages.

Described configuration messages can be high-level signaling, such as public RRC (RadioResourceControl, wireless heterogeneous networks) signaling, the network equipment sends this signaling with the form of broadcast, such as it can be carried in System information block (SystemInformationBlock, SIB); Also can be special RRC signaling, the network equipment sends to described subscriber equipment in the mode of dedicated signaling.

Preferably, the device-to-device resource collection indicated by D2D resource distribution message has the cycle, and the resource collection of described configuration messages configuration can be the resource in lasting multiple cycle.In a resource period, described resource by with the model split of time division multiplexing and/or frequency division multiplexing for Resource Unit (definition of Resource Unit sees above and states).Described resource period configuration can be the cycle being indicated described resource collection by described configuration messages, such as 320ms (millisecond, or 320 subframes), or 640ms etc.Described configuration messages can indicate time and the frequency location of the device-to-device resource in described resource period simultaneously.Such as indicate the specific sub-frame (such as sub-frame of uplink) in described resource period to be device-to-device resource, these subframes being arranged to D2D can also can discretely distribute continuously; Indicate frequency location simultaneously, such as, have in the carrier wave (carrier) of the LTE/LTE-A system of 10MHz bandwidth at one, the effective bandwidth of frequency domain is 50 PRB, distribution portion bandwidth can be used for D2D wherein.

Fig. 6 is an example of D2D resource distribution.The resource of described distribution is used for device discovery, and its resource period is 1280ms (128 radio frames), and distribute the time-domain resource of 8 subframes as device discovery in each resource period, described 8 subframes are continuous; 40 PRB in each subframe in the middle of allocated frequency band are used for device discovery, and namely this time domain 8 subframes, frequency domain 40 RB are the device discovery resources in a resource period of described resource collection.

Preferably, device-to-device resource in the device-to-device resource collection cycle described in D2D resource distribution message comprises P resource grouping in time domain, P is integer and P>1, comprises time domain continuous print subframe and communicate for described device-to-device in each described resource grouping; Discrete distribution and in a resource period between resource grouping in described resource period, described in different resource grouping, number of sub frames is identical.By dividing into groups for described resource, cellular communication can be carried out in the subframe between grouping, avoids device-to-device to take time-domain resource for a long time and causes cellular communication to be obstructed.

Further, the number of the time domain continuous subframes communicated for described device-to-device in described grouping is not more than up link semi-continuous scheduling (Semi-PersistentScheduling, SPS) length of interval (interval), this SPS is spaced apart the minimum value at the SPS interval that cellular communication system allows.Such as described minimum value is 10ms, and the number of the time domain continuous subframes communicated for described device-to-device in so described grouping is not more than 10.Namely the number limiting the continuous subframes of distributing in systems in which is not more than 10.Can specifically be defined as 10, or 9, or 8, or 4, or 2, etc.

Further, the number of the time domain continuous subframes communicated for described device-to-device in described grouping is not more than uplink hybrid automatic repeat request (HybridAutomaticRepeatRequest, HARQ) two-way time (RoundTripTime, RTT).Such as in FDD cellular system, the HARQRTT of LTE/LTE-A up link is 8ms, then the number of the time domain continuous subframes communicated for described device-to-device in described grouping is not more than 8.Namely the number limiting the continuous subframes of distributing in systems in which is not more than 8.Can specifically be defined as 8, or 6, or 4, or 2, etc.

, to continuous device in grouping D2D can be avoided to have an impact to cellular services to the restriction of devices communicating number of sub frames, such as, be defined as and be not more than SPS interval by above-mentioned, can ensure that the up SPS transmission of the cellular link of some UE that D2D blocks is not more than 1 time; Be defined as and be not more than HARQRTT, can ensure that the re-transmission of the cellular link ascending HARQ course (process) that D2D blocks is defeated and be not more than 1 time.

Further, also can limit above-mentioned " being not more than " is " being less than ", and the number of the time domain continuous subframes namely communicated for described device-to-device in described grouping is less than up link SPS interval or is less than HARQRTT.Repeat no more.

Further, in TDD cellular communication system, the number of the time domain continuous subframes communicated for described device-to-device in described grouping is not more than continuous print sub-frame of uplink number in TDD subframe uplink-downlink configuration (UL-DLconfiguration).The subframe uplink-downlink configuration of TDDLTE/LTE-A system is as shown in table 1.

Table 1:LTE/LTE-ATDD system subframe uplink-downlink configuration

Wherein, the TDD subframe uplink-downlink configuration of indication can be described uplink-downlink configuration 0, or uplink-downlink configuration 1, and now continuous print D2D communication subframe is all not more than 3.Such as, or determine based on presently used subframe uplink-downlink configuration, the subframe uplink-downlink configuration that current cellular system uses is for configuring 1, and so continuous print D2D communication subframe is not more than 2.

Fig. 7 is another example of D2D resource distribution.The resource of described distribution is equally for device discovery, its resource period is 5120ms (512 radio frames), 32 subframes are distributed as device discovery time-domain resource in each resource period, described 32 subframes are discontinuous, such as, in this example, 32 subframes are divided into 4 groups, often organize 8 subframes continuous, this 4 groups of subframes discrete distribution in a resource period.The distribution of frequency domain resource can with above-mentioned example class seemingly.In figure, the radio frames of shadow representation comprises discovery subframe.It should be noted that, only depict one group of continuous print in figure and find subframe, other groups are similar.

It should be noted that, in above-mentioned numeral and legend, the distribution of D2D resource collection in resource period is citing, does not form the restriction to relevant programme.Such as, the continuous print device discovery subframe described in related example is positioned at a radio frames, and do not represent and can only support this configuration mode, such as device discovery subframe can be continuous across radio frames.

In another execution mode, device-to-device resource in described device-to-device resource collection resource period comprises P resource grouping in time domain, P is integer and P>1, comprises several subframes and communicate for described device-to-device in each described resource grouping; Discrete distribution and in a resource period between resource grouping in described resource period, described in different resource grouping, number of sub frames is identical.By dividing into groups for described resource, cellular communication can be carried out in the subframe between grouping, avoids device-to-device to take time-domain resource for a long time and causes cellular communication to be obstructed.

Further, the time domain span of the subframe communicated for described device-to-device in described grouping is not more than up link semi-continuous scheduling (Semi-PersistentScheduling, SPS) length of interval (interval), this SPS is spaced apart the minimum value at the SPS interval that cellular communication system allows.Such as described minimum value is 10ms, and the time domain span of the subframe communicated for described device-to-device in so described grouping is not more than 10 subframes.Can specifically be defined as 10, or 9, or 8, or 4, or 2, etc.

Further, or, the time domain span of the subframe communicated for described device-to-device in described grouping is not more than uplink hybrid automatic repeat request (HybridAutomaticRepeatRequest, HARQ) two-way time (RoundTripTime, RTT).Such as in TDD cellular system, the HARQRTT of LTE/LTE-A up link is determined by concrete subframe uplink-downlink configuration, HARQRTT in such as some subframe uplink-downlink configuration is 10ms, then the time domain span of the subframe communicated for described device-to-device in described grouping is not more than 10 subframes.Can specifically be defined as 8, or 6, or 4, or 2, etc.

To the restriction of devices communicating number of sub frames, D2D can be avoided to have an impact to cellular services, especially in TDD cellular system to continuous device in grouping by above-mentioned.Such as be defined as and be not more than SPS interval, can ensure that the up SPS transmission of the cellular link of some UE that D2D blocks is not more than 1 time; Be defined as and be not more than HARQRTT, can ensure that the re-transmission of the cellular link ascending HARQ course (process) that D2D blocks is defeated and be not more than 1 time.

Further, the time domain span of the subframe communicated for described device-to-device in described grouping is not more than the length of S radio frames, S>=1.The time domain span that such as can limit the subframe communicated for described device-to-device in described grouping is not more than 1 radio frames, i.e. S=1.Repeat no more.

It should be noted that, in associated description, device-to-device communication refers to the transmission of D2D signal or channel between terminal, include but not limited to that device-to-device finds signal/channel, device-to-device control signal/dispatching distribution signaling or carry the channel of described signaling, device-to-device business datum or carry the channel etc. of described data.

In one embodiment, in a resource period, the D2D signal of described subscriber equipment transmit in multiple Resource Unit and described multiple Resource Unit in time-domain and/or the discrete distribution of frequency domain.For multiple Resource Units of transmitting described D2D signal time-domain and/or the discrete distribution of frequency domain comprise following one of at least: the discrete distribution of described frequency domain, refers to that the frequency location that described multiple Resource Unit takies is discontinuous; The discrete distribution of described time-domain, refers to that the time-domain position that described multiple Resource Unit takies is discontinuous; Described frequency domain and the discrete distribution of time-domain, refer to the frequency domain position that described multiple Resource Unit takies and time location all discontinuous.In other words, the D2D signal of described subscriber equipment transmit in multiple Resource Unit and described multiple Resource Unit when the discrete distribution of frequency domain, the time-domain position of described multiple Resource Unit is continuous print; The D2D signal of described subscriber equipment transmit in multiple Resource Unit and described multiple Resource Unit when the discrete distribution of time-domain, the frequency domain position of described multiple Resource Unit is continuous print; The D2D signal of described subscriber equipment transmit in multiple Resource Unit and described multiple Resource Unit when time-domain and the discrete distribution of frequency domain, frequency domain position and the time-domain position of described multiple Resource Unit are all discontinuous.

In one embodiment, the frequency domain location interval for adjacent two Resource Units transmitting multiple Resource Units of described D2D signal is K/2; Wherein K is the number of the frequency domain available resource units for device-to-device communication.Described two adjacent Resource Units, refer in described multiple Resource Unit, and position, random time territory is at a distance of two nearest Resource Units.If described multiple Resource Unit only includes 2 Resource Units, namely so described two adjacent Resource Units refer to this 2 Resource Units.

In one embodiment, the frequency domain location interval for adjacent two Resource Units transmitting multiple Resource Units of described D2D signal is K/m; Wherein K is the number of the frequency domain available resource units for device-to-device communication, and m is for transmitting the Resource Unit number of described D2D signal in a resource period.

In one embodiment, the time-domain location interval for adjacent two Resource Units transmitting multiple Resource Units of described D2D signal is L/2; Wherein L is the number of time-domain available resource units in resource period for device-to-device communication.

Figure 8 shows that an instantiation.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits in 2 Resource Units.The size of each Resource Unit with a PRB to identical.In this example, for describing simple hypothesis K=8, L=6, namely have 48 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 2 Resource Units; The frequency interval of these 2 Resource Units is K/2=4, and time location is identical.

Figure 9 shows that an instantiation.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits in 2 Resource Units.The size of each Resource Unit with a PRB to identical.In this example, simply supposing K=8 equally, L=6 for describing, namely having 48 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 2 Resource Units; The time interval of these 2 Resource Units is L/2=3, and frequency location is identical.

Figure 10 shows that an instantiation.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits in 2 Resource Units.The size of each Resource Unit with a PRB to identical.In this example, simply supposing K=8 equally, L=6 for describing, namely having 48 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 2 Resource Units; The frequency interval of these 2 Resource Units is K/2=4, and the time interval is L/2=3.

Figure 11 shows that another instantiation.In this example, the size of Resource Unit is the bandwidth of 2 continuous print PRB at frequency domain, and time domain is that 1 PRB is to being 1 subframe.In other words, 1 Resource Unit comprises 2 at frequency domain continuous print PRB couple.In this example, for describing simple hypothesis K=4, L=4, namely have 16 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 2 Resource Units; The frequency interval of these 2 Resource Units is K/2=4, and the time interval is L/2=3.A grid in attention figure represents 1 PRB couple.Equally, be similar to the example of Fig. 9 and Figure 10, described 2 Resource Units only at frequency domain or only discontinuous in time domain, can repeat no more.

Figure 12 shows that an instantiation.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits in 2 Resource Units.The size of each Resource Unit is NUM frequency domain continuous print PRB couple, and NUM is more than or equal to 1.In this example, simply supposing K=8 equally, L=6 for describing, namely having 48 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 2 Resource Units; The frequency interval of these 2 Resource Units is K/2=4, continuous in time.

In one embodiment, for transmit described D2D signal multiple Resource Units in the time-domain location interval of adjacent two Resource Units be L/n; Wherein L is the number of time-domain available resource units in resource period for device-to-device communication, and n is for transmitting the Resource Unit number of described D2D signal in a resource period.

Figure 13 shows that an instantiation.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits in 4 Resource Units.The size of each Resource Unit with a PRB to identical.In this example, for describing simple hypothesis K=8, L=12, namely have 96 Resource Units in a resource period.For particular UE, in a resource period, its D2D signal transmits in 4 Resource Units; In these 4 Resource Units, the frequency interval of adjacent two Resource Units is K/2=4, and the time interval is L/4=3.As previously mentioned, two adjacent Resource Units refer to nearest two in time-domain position in described multiple Resource Unit.Such as, in this example, 1 and 2 is Adjacent resource unit, and 2 and 3 is Adjacent resource unit, and 3 and 4 is Adjacent resource unit.In related embodiment, the implication of Adjacent resource unit roughly the same.

Figure 14 shows that another instantiation.In this example with Figure 13 unlike, the frequency interval for 4 Resource Units of the D2D Signal transmissions of particular UE is K/4=2, and the time interval is L/4=3.

Figure 15 shows that another instantiation.In this example with Figure 14 unlike, 4 Resource Units for the D2D Signal transmissions of particular UE are continuous in time-domain.

It should be noted that, the size that this example is equally applicable to Resource Unit is more than the right situation of 1 PRB.Such as, 1 Resource Unit comprises 2 frequency domain continuous print PRB couple, and the Resource Unit representated by the lattice now in Figure 13 and Figure 12 comprises 2 PRB couple.

In one embodiment, be L1/n for transmitting the time-domain location interval of multiple Resource Units of described D2D signal; Wherein L1 is the number of the time-domain available resource units of each resource grouping in resource period for device-to-device communication, and n is for transmitting the Resource Unit number of described D2D signal in a resource period.Suppose that the time span of Resource Unit and PRB are to identical (length of 1 subframe), in each resource period, the number of sub frames of the device-to-device resource collection of configuration is 32, but in its corresponding 4 resources grouping of time-domain, each resource grouping comprises 8 device-to-device subframes, i.e. L1=8, and the number supposing the Resource Unit of the described D2D signal of transmission in a resource period is 2, i.e. n=2, then the time interval of described multiple Resource Unit is 4, i.e. 4, interval subframe or Resource Unit.In this example, can limit further, for particular UE, 2 Resource Units transmitting its D2D signal can not divide into groups across resource, and namely it is positioned at 1 resource grouping.

Such as, when the time-domain resource in example shown in Fig. 8-Figure 15 being defined as the resource of each resource grouping in resource period, relevant programme stands good.Repeat no more.

In one embodiment, divide into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit for described D2D Signal transmissions in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions; The transmission in a described resource grouping of described D2D signal.Namely suppose that the interior number transmitting the Resource Unit of described D2D signal of a resource period is n, in so each resource grouping, the number of time-domain resource unit is n; The described private resource unit transmitting described D2D signal is positioned at a resource grouping.

Figure 16 shows that a concrete example.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits (i.e. n=2) in 2 Resource Units.The size of each Resource Unit is NUM frequency domain continuous print PRB couple, and NUM is more than or equal to 1.In this example, for describing simple hypothesis K=8, L=6.According to the described private resource number of unit for described D2D Signal transmissions in a resource period, the Resource Unit in described resource period is divided into groups in time domain, namely according to n=2, resource is divided into groups in this example, in each grouping, the number of time-domain resource unit is n, is in this example to comprise 2 continuous subframes in each grouping.And for particular UE, in a resource period, the only transmission in a resource grouping of its D2D signal, is in this example in 2 Resource Units in a resource grouping and transmits; For these 2 Resource Units, its frequency interval is K/2=4, continuous in time.

Figure 17 shows that another concrete example.In this example embodiment, in a resource period, the D2D signal of special user equipment transmits (i.e. n=4) in 4 Resource Units.The size of each Resource Unit is NUM frequency domain continuous print PRB couple, and NUM is more than or equal to 1.In this example, for describing simple hypothesis K=8, L=12.According to the described private resource number of unit for described D2D Signal transmissions in a resource period, the Resource Unit in described resource period is divided into groups in time domain, namely according to n=4, resource is divided into groups in this example, in each grouping, the number of time-domain resource unit is n, be comprise 4 continuous subframes in each grouping in this example, because the time span of each Resource Unit is identical with 1 subframe, the time-domain resource unit number namely in each grouping is 4.And for particular UE, in a resource period, transmit in 4 Resource Units of its D2D signal only in a resource grouping; For these 4 Resource Units, its frequency interval is K/n=2, continuous in time.

Figure 18 shows that another concrete example.In this example embodiment, the frequency interval determination mode sending described D2D signal for particular UE is K/2, and all the other are identical with described in aforementioned exemplary.

It should be noted that, when dividing into groups to the D2D resource in resource period, if time-domain resource unit number cannot be divided exactly by the Resource Unit number that specific D2D Signal transmissions takies, in the 1st so in resource period or the grouping of last 1 resource, time-domain resource unit number may be less than the time-domain resource unit number in other groupings.

In one embodiment, the D2D signal in related example is find the physical channel of signal for the discovery signal of device discovery or carrying.

In one embodiment, the D2D signal in related example be for device-to-device Control on Communication signaling or Scheduling assistance information transmission signal or carry the physical channel of described signal.

In one embodiment, in a resource period, the D2D signal that subscriber equipment sends takies multiple Resource Unit, and the information transmitted in described multiple Resource Unit is identical or different.Identically refer to, the information transmitted in described multiple Resource Unit repeats transmission to one group of effective information; Described repetition can use identical or different modulation coding modes and coding redundancy version when transmitting.Such as, in a resource period, repeated transmission is carried out to discovery signal or control signal (or being called dispatching distribution).Difference refers to, the information transmitted in described multiple Resource Unit forms a complete information, the message of such as one complete discovery signal.

In one embodiment, the mode that subscriber equipment determines the resource location of its transmission D2D signal is, subscriber equipment determines transmitting the position of particular resource unit in multiple Resource Units of described D2D signal, and in described multiple Resource Unit, the position of other Resource Units is determined according to the rule of agreement.The mode of the rule of described agreement and the discrete distribution of foregoing multiple Resource Unit.

Such as, an interior Resource Unit for described UE transmission D2D signal of resource period is 2, the position of particular resource unit is (l, k), so described UE transmits the time location of second Resource Unit of described D2D signal can be mod (l+L/2, L), or mod (l+L1/2, L1), or l, or l+1; The frequency location of second Resource Unit can be mod (k+K/2, K), or k.

Such as, an interior Resource Unit for described UE transmission D2D signal of resource period is m, the position of particular resource unit is (l, k) (suppose that this particular resource unit is represented as first Resource Unit), the time location that so described UE transmits i-th Resource Unit of described D2D signal can be mod (l+ (i-1) * L/m, L), or mod (l+ (i-1) * L1/m, L1), or l, or l+i-1; The frequency location of i-th Resource Unit can be mod (k+ (i-1) * K/m, K), or mod (k+mod (i-1,2) * K/2, K), or k.Wherein, i is the positive integer being less than or equal to m.

Above-mentioned l and k represents frequency and the time-domain position of subscriber equipment particular resource unit in a resource period respectively, and l value is 0 ~ L-1, or 0 ~ L1-1, k value, 0 ~ K.Mod represents modulo operation, such as mod (5,2)=1.All the other alphabetical implications as hereinbefore.

Further, described in concrete determination, the mode of the position of first Resource Unit can be UE Stochastic choice, and namely UE Stochastic choice in candidate resource unit set is used for the resource location of particular resource unit transmission.Candidate resource unit set can be the set of the device-to-device Resource Unit in a device-to-device resource period, such as UE can in L*K Resource Unit Stochastic choice; Or candidate resource unit set can be the D2D number of signals can held in a device-to-device resource period, such as each D2D signal transmits in m Resource Unit, so means Stochastic choice in L*K/m Resource Unit at candidate resource unit set Stochastic choice; Such as, or candidate resource unit set can be the set of a device-to-device Resource Unit grouping in a device-to-device resource period, Stochastic choice in L1*K Resource Unit; Or similar to the above, Stochastic choice in L1*K/m Resource Unit.Wherein, m is the number that subscriber equipment transmits the Resource Unit of described D2D signal in a resource period, and all the other alphabetical implications as hereinbefore.Or candidate resource unit set is all Resource Units that the time-domain position l of Resource Unit in resource period meets mod (l, m)=0.

Further, subscriber equipment can determine according to the instruction of the network equipment (as base station) as described in the position of first Resource Unit.Such as, by base station to user device transmissions Secondary resource configuration messages, this Secondary resource configuration messages indicates described subscriber equipment in a resource period, transmit time and the frequency location of first Resource Unit of D2D signal.This Secondary resource configuration messages can be user equipment specific RRC signaling, or physical layer signaling.

In one embodiment, in the Secondary resource configuration messages that base station sends to subscriber equipment, include time-domain resource indication parameter and frequency domain resource indication parameter, described time-domain resource indication parameter and frequency domain resource indication parameter indicate the position of particular resource unit in the multiple Resource Units transmitting described D2D signal in a resource period to subscriber equipment, the such as position of first Resource Unit.

Further, described frequency domain resource is indicated by the form of index.Such as, by index 0,1,2 ..., Kf-1 or 1,2 ..., Kf indicates the frequency domain position of described particular resource unit.Wherein Kf is the total D2D signal available resource units number of frequency domain (the D2D number of resources namely configured in resource period).Or Kf is the total Resource Unit number of frequency domain, such as, in LTE system, when system bandwidth is 10MHz, the total number of resource blocks of frequency domain is 50, and the frequency domain bandwidth of total Resource Unit number to be 50/Mu, Mu be described D2D Resource Unit, represents in units of Resource Block.When 50/Mu is non-integer, to its round or round downwards or round up.

Or described frequency domain resource is indicated by the form of bitmap (bitmap).Such as, the bitmap being Kf by length indicates the frequency domain position of described particular resource unit.Wherein the implication of Kf as hereinbefore.

Further, described time-domain resource is indicated by the form of index.Such as, so by index 0,1,2 ..., Kt-1 or 1,2 ..., Kt indicates the time-domain position of described particular resource unit.Total the wherein Kt D2D signal available resource units number that is time domain in resource period (the D2D number of resources namely configured in resource period, if the time span of Resource Unit is 1 subframe, be exactly the D2D number of sub frames so in resource period).Or the time domain maximum resource unit number of Kt for allowing in resource period, such as, in LTEFDD system, in each D2D discovery cycle, suppose that can configure at most 200 finds subframe, so Kt is exactly 200, and finds the quantity of subframe is how many regardless of the D2D of actual disposition.

Or, by index 0,1,2 ..., Kt/m-1 or 1,2 ..., Kt/m indicates the time-domain position of described particular resource unit.Wherein m is that described D2D signal transmits shared D2D Resource Unit number in a resource period, and when such as D2D signal repeats transmission in resource period, m represents the number of times repeating to transmit, and all the other each meaning of parameters as hereinbefore.When Kt/m is non-integer, to its round or round downwards or round up.

In one embodiment, the mode that subscriber equipment determines the resource location of its transmission D2D signal is, subscriber equipment determines the position of the virtual resource transmitting described D2D signal, and determines the position of the multiple physical resource unit transmitting D2D signal based on the mapping relations between virtual resource to physical resource.

Such as, in a resource period, D2D signal resource number counts L*K with Resource Unit, and the virtual resource number so can arranging its correspondence is L*K/m.Wherein m transmits Resource Unit number shared by D2D signal for special user equipment in a resource period, and all the other alphabetical implications as hereinbefore.There are between virtual resource and physical resource unit the mapping relations of agreement simultaneously.Such as, mapping relations are, it is some that virtual resource position (or numbering) corresponds to in multiple Resource Units of a D2D Signal transmissions, such as first.The position of all the other Resource Units is determined according to the rule of the agreement between aforesaid multiple Resource Unit.

Further, the mode of the position (or numbering) of virtual resource described in concrete determination can be UE Stochastic choice, i.e. the position (or numbering) of UE Stochastic choice virtual resource in virtual resource unit candidate collection.Virtual resource unit candidate collection can be the set that the Resource Unit in resource collection in a resource period is corresponding, such as UE can in L*K/m virtual resource Stochastic choice; Or the set that a device-to-device Resource Unit grouping in a device-to-device resource period is corresponding, such as Stochastic choice in L1*K/m virtual resource.Wherein, m is the number that subscriber equipment transmits the Resource Unit of described D2D signal in a resource period, and all the other alphabetical implications as hereinbefore.

Further, subscriber equipment can determine according to the instruction of the network equipment (as base station) as described in the position (or numbering) of virtual resource.Such as, by base station to user device transmissions Secondary resource configuration messages, this Secondary resource configuration messages indicates described subscriber equipment in a resource period, transmit the position (or numbering) of the virtual resource of D2D signal.This Secondary resource configuration messages can be user equipment specific RRC signaling, or physical layer signaling.

Device embodiment one,

In the present embodiment, provide a kind of D2D communication system.Figure 19 is the structural representation of the wireless communication system according to the embodiment of the present invention, and the wireless communication system according to the embodiment of the present invention comprises: the network equipment 1902 of cellular network, first user equipment 1904 and the second subscriber equipment 1906.Respectively each entity above-mentioned is described below.

In an embodiment, the network equipment 1902 of cellular network may be used for the configuration carrying out device discovery resource.

As shown in figure 20, described network equipment 1902 at least can comprise:

Configuration module 2002, for generating D2D first resource configuration messages;

Sending module 2004, for sending described D2D first resource configuration messages to D2D user equipment (UE).

Described configuration module 2002, generates corresponding configuration messages specifically for configuration device to the Radio Resource of equipment.

Wherein, described first resource configuration messages comprises the resource collection for distributing D2D, and described resource collection is used for the transmission of the signal of device-to-device; Wherein, described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period; Described resource collection is used for D2D subscriber equipment and sends D2D signal.

Such as device discovery resource can be configured in the mode of resource period, device discovery Radio Resource in each resource period by with the model split of time division multiplexing and/or frequency division multiplexing for finding Resource Unit, each discovery signal can find Resource Unit transmit at one.

In one embodiment, network equipment 1902 can be base station (basestation or eNB), or other network access equipment is as small-cell, also can be the network node of more top, as gateway (gateway), or Mobility Management Entity (MobilityManagementEntity, MME), or for D2D provides other servers or the network element of service, or comprise above-mentioned node one or more simultaneously.

In one embodiment, network equipment 1902 also can be the network element without temporal deployment in covering scene.Refer to that subscriber equipment is in the scene of cellular network coverage hole without covering scene, such as cellular infrastructure damages, or covers hole region, etc.

In one embodiment, network equipment 1902 also can be the UE taking on a bunch head (ClusterHead) or main UE (PrimaryUE), such as at some special scenes such as without in the scene of the network coverage, carried out the configuration of device discovery resource by specific subscriber equipment.

The mode of described discrete distribution comprise following one of at least: the frequency location of described multiple Resource Unit is discontinuous; The time location of described multiple Resource Unit is discontinuous; Frequency location and the time location of described multiple Resource Unit are discontinuous.

Described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m; Wherein, described K is the number of the frequency domain available resource units for device-to-device communication, and m is for transmitting the Resource Unit number of described D2D signal in a resource period.

Described sending module, also for sending D2D Secondary resource configuration messages; Wherein, described Secondary resource configuration messages comprises the position of first Resource Unit of multiple Resource Units of the described D2D signal of instruction transmission; Or, the position of instruction virtual resource, the position of described virtual resource and for transmit described D2D signal multiple Resource Units between there are default mapping relations in one embodiment, first user equipment 1904 can as shown in figure 21, comprise:

First communication unit 2102, for receiving D2D first resource configuration messages from network node,

Baseband processing unit 2104, for determining the resource collection distributing D2D according to described first resource configuration messages;

Second communication unit 2106, for sending the signal of described device-to-device communication in described D2D resource collection; Wherein, described resource collection is used for the transmission of the signal of device-to-device; Described resource collection is periodic distribution, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each resource period.

Preferably, second communication unit 2106, for sending described D2D signal in described private resource unit; Accordingly, described baseband processing unit 2104, also for from described resource collection, determines the position of the private resource unit sending D2D signal.

In one embodiment, the second subscriber equipment 1906 can detect described D2D signal.

At an execution mode, for multiple Resource Units of transmitting described D2D signal time-domain and/or the discrete distribution of frequency domain comprise following one of at least: the discrete distribution of described frequency domain, refers to that the frequency location that described multiple Resource Unit takies is discontinuous; The discrete distribution of described time-domain, refers to that the time-domain position that described multiple Resource Unit takies is discontinuous; Described frequency domain and the discrete distribution of time-domain, refer to the frequency domain position that described multiple Resource Unit takies and time location all discontinuous.

Described baseband processing unit, specifically for determining the position of the virtual resource transmitting described D2D signal, and determine the position of position as described private resource unit of the multiple Resource Units transmitting described D2D signal according to the position of described virtual resource.

Described baseband processing unit, specifically for from virtual resource candidate collection, the position of virtual resource unit described in Stochastic choice; Or receive D2D Secondary resource configuration messages by the first communication unit from network node, wherein, described Secondary resource configuration messages is at least used to indicate the position of described virtual resource.

Described baseband processing unit, specifically for determine transmitting described D2D signal multiple Resource Units in the position of particular resource unit, and determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal according to the position of described particular resource unit and described preset rules, using the position of the position of the position of described particular resource unit and other Resource Units described as described private resource.

Described baseband processing unit, specifically for the position of particular resource unit described in Stochastic choice in Resource Unit candidate collection; Or by the first communication unit from network node receiving equipment to equipment Secondary resource configuration messages, described Secondary resource configuration messages is at least used to indicate the position of described particular resource unit.

Described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m; Wherein, described K is the number of the frequency domain available resource units communicated for described device-to-device, and m is for transmitting the Resource Unit number of described D2D signal in a described resource period.

Described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2; Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L/n; Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L1/2; Or, for transmit described D2D signal described multiple Resource Unit in the time-domain location interval of adjacent two Resource Units be L1/n; Wherein, described L is the number of time-domain available resource units in the resource period that communicates for described device-to-device, L1 is the number of the time-domain available resource units of each resource grouping in the resource period that communicates for described device-to-device, and n is the described private resource number of unit for described D2D Signal transmissions in a resource period.

Described D2D signal is find the physical channel of signal for the discovery signal of device discovery or carrying; Or, described D2D signal be for the control signal of devices communicating or Scheduling assistance information transmission signal or carry the physical channel of described signal.

Resource Unit in described resource period comprises the grouping of multiple resource in time domain; Each described resource grouping comprises the transmission of the signal that time domain continuous print subframe communicates for described device-to-device; Resource described in each is divided into groups discrete distribution and in a resource period, and the described number of sub frames in different resource grouping is identical.

In one embodiment, the mode that subscriber equipment determines the resource location of its transmission D2D signal is, subscriber equipment determines transmitting the position of first Resource Unit in multiple Resource Units of described D2D signal, and in described multiple Resource Unit, the position of other Resource Units is determined according to the rule of agreement.The rule of described agreement as previously mentioned.

Further, the mode of the position (or numbering) of virtual resource or first Resource Unit described in concrete determination can be described baseband processing unit Stochastic choice, the i.e. position (or numbering) of a described baseband processing unit Stochastic choice virtual resource, or the position of Stochastic choice first Resource Unit.

Further, described baseband processing unit can determine according to the instruction of the network equipment (as base station) as described in the position (or numbering) of virtual resource, or determine the position of described first Resource Unit according to described instruction.Such as, described first communication unit receives by the Secondary resource configuration messages of base station to user device transmissions, this Secondary resource configuration messages indicates described subscriber equipment in a resource period, transmit the position (or numbering) of the virtual resource of D2D signal, or indicates the position of described first Resource Unit.This Secondary resource configuration messages can be user equipment specific RRC signaling, or physical layer signaling.

Be described in detail to the function of the device that above-mentioned the present embodiment provides below, described subscriber equipment comprises:

Baseband processing unit, for according to described first resource configuration messages, determines the resource transmitting D2D signal;

Second communication unit, for sending D2D signal in described resource.

Here, described first resource configuration messages comprises: the resource collection of the described D2D signal of instruction transmission;

Wherein, described device-to-device resource collection comprises resource period, comprises with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each described resource period.

Described baseband processing unit, specifically for according to described first resource configuration messages, determines the position of transmitting the Resource Unit of specifying in the resource period of described D2D signal; Described Resource Unit of specifying is the multiple Resource Units distributed according to time-domain and/or the discrete mode of frequency domain;

Wherein, described time-domain and/or the discrete mode of frequency domain comprise following one of at least:

Described multiple Resource Unit takies discontinuous frequency location;

Described multiple Resource Unit takies discontinuous time-domain position;

Described multiple Resource Unit takies discontinuous frequency domain position and time location.

Described baseband processing unit, specifically for determining the position of the virtual resource transmitting described D2D signal, determines the position of the multiple Resource Units transmitting described D2D signal according to the position of described virtual resource according to the mapping mode preset.

Described second communication unit, sends described D2D signal specifically in the Resource Unit of specifying in a resource period.

Described discontinuous frequency location is: be K/2 for transmitting the frequency domain location interval of the Resource Unit of described D2D signal; Or, be K/m for transmitting the frequency domain location interval of multiple Resource Units of described D2D signal;

Described discontinuous time-domain position is: be L/2 for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

Described D2D signal is find the physical channel of signal for the discovery signal of device discovery or carrying; Or,

Described D2D signal be for the control signal of device-to-device communication or Scheduling assistance information transmission signal or carry the physical channel of described signal.

Described default mapping mode is the position of particular resource unit described in Stochastic choice or the position of described virtual resource unit; Or receiving equipment, to equipment Secondary resource configuration messages, determines the position of described particular resource unit or the position of described virtual resource according to described Secondary resource configuration messages.

Each described resource grouping comprises time domain continuous print subframe and communicates for described device-to-device;

The network node that the embodiment of the present invention provides, comprising:

Described Resource Unit of specifying is the multiple Resource Units distributed according to time-domain and/or the discrete mode of frequency domain;

Described multiple Resource Unit takies discontinuous frequency location;

Described multiple Resource Unit takies discontinuous time-domain position;

Described multiple Resource Unit takies discontinuous frequency domain position and time location.。

Described sending module, also for sending D2D Secondary resource configuration messages; Wherein, described Secondary resource configuration messages comprises the position of first Resource Unit of multiple Resource Units of the described D2D signal of instruction transmission; Or, the position of instruction virtual resource, the position of described virtual resource and for transmit described D2D signal multiple Resource Units between there are default mapping relations.

Preferably, the another kind of subscriber equipment that the present embodiment provides, can comprise:

First communication module, for receiving the configuration messages of D2D resource; Wherein, described configuration messages at least comprises: indicate the resource collection for detecting described D2D signal, described device-to-device resource collection has resource period; Comprise with multiple Resource Units of the model split of time division multiplexing and/or frequency division multiplexing in each described resource period; Accordingly, in a resource period, described D2D signal transmits in multiple Resource Unit, and described multiple Resource Unit is in time-domain and/or the discrete distribution of frequency domain;

Described frequency domain is discrete, and to be distributed as the frequency location that described multiple Resource Unit takies discontinuous;

The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims

1. a device-to-device D2D communication means, is characterized in that, described method comprises:

D2D first resource configuration messages is received from network node;

Described equipment is sent to D2D signal in described resource collection;

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

The mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

3. method according to claim 2, is characterized in that, determines the position of the private resource unit sending described D2D signal, comprising:

4. method according to claim 3, is characterized in that, determines the position of the virtual resource transmitting described D2D signal, comprising:

Or,

5. method according to claim 1 and 2, is characterized in that, determines the position of the private resource unit sending described D2D signal, comprising:

6. method according to claim 5, is characterized in that, determines transmitting the position of particular resource unit in multiple Resource Units of described D2D signal, comprising:

Or,

7. the method according to any one of claim 2 to 6, is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

8. the method according to any one of claim 2 to 6, is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

9. the method according to claim 1 or 8, is characterized in that, described method also comprises:

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

Wherein, i is the positive integer being less than or equal to m.

11. methods according to any one of claim 1 to 6, is characterized in that, described D2D signal is the physical channel finding signal for the discovery signal of device discovery or carrying; Or,

12. methods according to claim 1, is characterized in that, the Resource Unit in described resource period comprises the grouping of multiple resource in time domain;

13. methods according to claim 11, is characterized in that, the mode of the determination of the number of described time domain continuous print subframe comprise following one of at least:

14. 1 kinds of D2D communication meanss, is characterized in that, described method comprises:

Generate D2D first resource configuration messages;

15. methods according to claim 14, is characterized in that, described method also comprises: send D2D Secondary resource configuration messages;

16. methods according to claim 15, is characterized in that,

Described Secondary resource configuration messages comprises: time-domain resource indication parameter and frequency domain resource indication parameter;

17. 1 kinds of D2D communication meanss, is characterized in that, described method comprises:

The configuration messages of D2D resource is received from network node;

D2D signal is detected in described resource collection;

18. methods according to claim 17, is characterized in that,

19. methods according to claim 18, is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

20. methods according to claim 19, is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

21., according to claim 17 to the method described in 20 any one, is characterized in that,

Divide into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions;

Described Resource Unit is used for D2D Signal transmissions.

22. methods according to claim 17, is characterized in that,

Determine transmitting the position of particular resource unit in multiple Resource Units of described D2D signal;

23. methods according to claim 17 or 21, is characterized in that,

And/or,

Wherein, i is the positive integer being less than or equal to m.

24. 1 kinds of subscriber equipmenies, is characterized in that, comprising:

25. subscriber equipmenies according to claim 24, is characterized in that,

Described second communication unit, for sending described D2D signal in described private resource unit;

The mode of described discrete distribution comprise following one of at least:

The frequency location of described multiple Resource Unit is discontinuous;

The time location of described multiple Resource Unit is discontinuous;

26. subscriber equipmenies according to claim 25, it is characterized in that, described baseband processing unit, specifically for determining the position of the virtual resource transmitting described D2D signal, and determine the position of position as described private resource unit of the multiple Resource Units transmitting described D2D signal according to the position of described virtual resource.

27. subscriber equipmenies according to claim 26, is characterized in that,

Described baseband processing unit, specifically for from virtual resource candidate collection, the position of virtual resource unit described in Stochastic choice;

Or,

28. subscriber equipmenies according to claim 25, is characterized in that,

29. subscriber equipmenies according to claim 28, is characterized in that,

Described baseband processing unit, specifically for the position of particular resource unit described in Stochastic choice from Resource Unit candidate collection;

Or,

30. subscriber equipmenies according to any one of claim 25 to 29, it is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/2; Or, for transmit described D2D signal described multiple Resource Unit in the frequency domain location interval of adjacent two Resource Units be K/m;

31. subscriber equipmenies according to any one of claim 25 to 29, it is characterized in that, described preset rules is: for transmit described D2D signal described multiple Resource Unit in adjacent two Resource Units time-domain location interval be L/2;

32. subscriber equipmenies according to claim 24 or 31, it is characterized in that, described baseband processing unit, also for dividing into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, make each Resource Unit divide into groups in the number, identical with the described private resource number of unit for described D2D Signal transmissions of time domain available resource units;

33. subscriber equipmenies according to claim 28, it is characterized in that, described baseband processing unit, also for the position (l according to described particular resource unit, k) and described preset rules, the position of other Resource Units in multiple Resource Units of described D2D signal is determined transmitting;

Wherein, i is the positive integer being less than or equal to m.

34. subscriber equipmenies according to any one of claim 25 to 29, is characterized in that, described D2D signal is the physical channel finding signal for the discovery signal of device discovery or carrying; Or,

35. subscriber equipmenies according to claim 25, is characterized in that, the Resource Unit in described resource period comprises the grouping of multiple resource in time domain;

36. subscriber equipmenies according to claim 35, is characterized in that, the mode of the determination of the number of described time domain continuous print subframe comprise following one of at least:

37. 1 kinds of network nodes, is characterized in that, comprising:

38., according to network node according to claim 37, is characterized in that, described sending module, also for sending D2D Secondary resource configuration messages;

39., according to network node according to claim 38, is characterized in that,

40. 1 kinds of subscriber equipmenies, is characterized in that, comprising:

41. subscriber equipmenies according to claim 40, is characterized in that, described frequency domain is discrete, and to be distributed as the frequency location that described multiple Resource Unit takies discontinuous;

42. subscriber equipmenies according to claim 41, is characterized in that, described preset rules is: be K/2 for transmitting the frequency domain location interval of the Resource Unit of described D2D signal; Or, be K/m for transmitting the frequency domain location interval of multiple Resource Units of described D2D signal;

43. subscriber equipmenies according to claim 42, is characterized in that, described preset rules is: be L/2 for transmitting the time-domain location interval of multiple Resource Units of described D2D signal;

44. subscriber equipmenies according to any one of claim 40 to 43, is characterized in that:

Described baseband processing module, specifically for dividing into groups in time domain to the Resource Unit in described resource period according to the described private resource number of unit in a resource period, the number of the time-domain available resource units in each resource grouping is identical with the described private resource number of unit for described D2D Signal transmissions; Described Resource Unit is used for D2D Signal transmissions.

45. subscriber equipmenies according to claim 40, is characterized in that,

Described baseband processing module, specifically for determine transmitting described D2D signal multiple Resource Units in the position of particular resource unit; According to position and the described preset rules of described particular resource unit, determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal; Described D2D signal is detected in described specific resources resource and other Resource Units described.

46. subscriber equipmenies according to claim 40, is characterized in that,

Described baseband processing module, specifically for the position (l according to described particular resource unit, and described preset rules k), determine transmitting the position of other Resource Units in multiple Resource Units of described D2D signal, described particular resource unit is first Resource Unit of the described D2D signal of transmission in described resource period;

And/or,

Wherein, i is the positive integer being less than or equal to m.

47. 1 kinds of device-to-device communication systems, is characterized in that, described system comprises: