WO2015106446A1

WO2015106446A1 - Resource configuration method, method and apparatus for object discovery and communication system

Info

Publication number: WO2015106446A1
Application number: PCT/CN2014/070839
Authority: WO
Inventors: 李宏超; 张翼; 周华
Original assignee: 富士通株式会社; 李宏超; 张翼; 周华
Priority date: 2014-01-17
Filing date: 2014-01-17
Publication date: 2015-07-23

Abstract

The embodiments of the present invention provide a resource configuration method, method and apparatus for object discovery and a communication system. The resource configuration method includes: a base station configures resources used for transmitting a D2D discovery signal sequence and/or a D2D reference signal for a communication device performing a D2D communication, wherein, in time domain, for a conventional cyclic prefix (CP), the resources occupy the sixth and/or the seventh SC-FDMA symbol of each sub-frame, and for extended CP, the resources occupy the fifth and/or the eleventh SC-FDMA symbol of each sub-frame; and in frequency domain, the location of PRB occupied by the resources are a set of PRB in which PRBs are continuous or incontinuous, and the subcarriers occupied by the resources are all or part of subcarriers of the each PRB occupied by the resources. With the method of the embodiments of the present invention, the resources used for transmitting D2D discovery signal are configured for the D2D communication, while the object discovery and synchronization are achieved, the interference of the D2D communication to cellular communication is reduced.

Description

Resource configuration method, object discovery method, device, and communication system

The present invention relates to the field of communications, and in particular, to a resource configuration method, an object discovery method, an apparatus, and a communication system. Background technique

Point-to-point (P2P, Peer-to-Peer) communication or device-to-device (D2D) proximity service is a form of more direct interaction and communication between user equipment. If there is no network side infrastructure support, then D2D communication is similar to communication in an ad hoc network. If there is support from the network side infrastructure, such as the integration of D2D into the cellular communication network, then at least the following benefits and applications:

D2D discovery can serve applications of neighboring devices. This feature of User Equipment (UE) can serve multiple commercial application levels and public security areas;

D2D communication can be used when neighboring users have communication requirements. This communication method can increase system throughput, reduce user power consumption, and perform traffic offloading from the eNodeB side. D2D is used as a relay. Technology to enhance cell coverage.

It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these solutions are set forth in the background section of the present invention. Summary of the invention

For D2D discovery, the user should have the ability to transmit D2D discovery signals and the ability to detect D2D discovery signals. The D2D discovery signal may include a sequence part and a message part, and the message part may be formed by processing, scrambling, encoding, etc., and the sequence part may serve initial discovery and pre-synchronization.

The embodiments of the present invention provide a resource configuration method, an object discovery method, a device, and a communication system, which implement discovery and synchronization of objects by configuring resources for transmitting D2D discovery signals for D2D communication.

According to a first aspect of the embodiments of the present invention, a resource configuration method is provided, wherein the method includes: a base station configured to transmit a D2D discovery signal sequence for a user equipment (D2D UE) in device-to-device communication Resources for columns and/or D2D reference signals;

Wherein, in the time domain, for a regular cyclic prefix (CP), the resource occupies the 0th and/or 6th and/or 7th and/or 13th single carrier frequency division multiple access of each subframe (SC-FDMA) symbol, for an extended CP, the resource occupies the 5th and/or 11th SC-FDMA symbol of each subframe.

According to a second aspect of the embodiments of the present invention, a resource configuration apparatus is provided, where the apparatus is applied to a base station, where the apparatus includes:

a configuration unit configured to allocate a D2D discovery signal sequence and/or a D2D reference signal to a user equipment (D2D UE) in device-to-device communication;

According to a third aspect of the embodiments of the present invention, a base station is provided, wherein the base station includes the resource configuration apparatus according to the foregoing second aspect.

According to a fourth aspect of the embodiments of the present invention, there is provided an object discovery method, wherein the method comprises: transmitting a D2D discovery signal sequence and/or on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal D2D reference signal;

Wherein, in the time domain, for a regular CP, the resource occupies the 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe, and for the extended CP, The resource occupies the 5th and/or 11th SC-FDMA symbol of each subframe.

According to a fifth aspect of the embodiments of the present invention, an object discovery apparatus is provided, which is applied to a communication device, where the device includes:

a transmitting unit that transmits a D2D discovery signal sequence and/or a D2D reference signal on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal;

According to a sixth aspect of the embodiments of the present invention, there is provided a communication device, wherein the communication device comprises the object discovery device of the aforementioned fifth aspect.

According to a seventh aspect of the embodiments of the present invention, an object discovery method is provided, wherein the method includes: Detecting or demodulating a D2D discovery signal sequence and/or a D2D reference signal on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal;

According to an eighth aspect of the present invention, an object discovery apparatus is provided, which is applied to a communication device, where the device includes:

a first processing unit that detects or demodulates a D2D discovery signal sequence and/or a D2D reference signal on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal;

Wherein, in the time domain, for a regular CP, the resource occupies the 0th and/or 6th sum of each subframe.

/ or the 7th and / or 13th SC-FDMA symbol, for the extended CP, the resource occupies the 5th and / or 11th SC-FDMA symbol of each subframe.

According to a ninth aspect of the embodiments of the present invention, there is provided a communication device, wherein the communication device comprises the object discovery device of the foregoing eighth aspect.

According to a tenth aspect of the embodiments of the present invention, a communication system is provided, wherein the communication system comprises:

a transmitting communication device in D2D communication and a receiving communication device in at least one D2D communication, wherein the transmitting communication device is configured to transmit D2D on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal Discovering a signal sequence and/or a D2D reference signal;

The receiving communication device is configured to detect or demodulate a D2D discovery signal sequence and/or a D2D reference signal on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal;

The format and/or the logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous; the PRB occupied by the resource The number of the frequency domain of the PRB occupied by the resource; the location of the SC-FDMA symbol occupied by the resource; the number of SC-FDMA symbols occupied by the resource; the subcarrier occupied by the resource The interval of the subcarrier occupied by the resource; the length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; and the index of the D2D discovery signal sequence.

According to still another aspect of the embodiments of the present invention, there is also provided a computer readable program, wherein, when the program is executed in a base station, the program causes a computer to perform the resource configuration described in the foregoing first aspect in the base station The method or the object discovery method of the aforementioned fourth aspect or seventh aspect. According to still another aspect of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the resource configuration method according to the foregoing first aspect or the foregoing The object discovery method of the fourth aspect or the seventh aspect.

According to still another aspect of the embodiments of the present invention, there is also provided a computer readable program, wherein when the program is executed in a user device, the program causes a computer to execute the aforementioned fourth aspect or seventh in the user device The object discovery method described in the aspect.

According to still another aspect of the present invention, there is provided a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the object of the aforementioned fourth aspect or seventh aspect in a user equipment Discovery method.

The beneficial effects of the embodiments of the present invention are: using the method, device and system of the embodiments of the present invention,

The resources for transmitting D2D discovery signals configured by D2D communication reduce the interference of D2D communication to cellular communication while realizing the discovery and synchronization of objects.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which illustrate the manner in which the principles of the invention can be employed. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprising" is used to mean the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS

The drawings are included to provide a further understanding of the embodiments of the invention, and are in the Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor. In the drawings: FIG. 1 is a flowchart of a resource configuration method according to an embodiment of the present invention;

2 is a schematic diagram of SC-FDMA symbols that UCI and DMRS may occupy in the case of a normal CP; FIG. 3 is a schematic diagram of SC-FDMA symbols that UCI and DMRS may occupy in the case of an extended CP; 4 is a schematic diagram of subcarriers occupied by resources in the frequency domain in this embodiment;

FIG. 5 is a schematic structural diagram of a resource configuration apparatus according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a base station according to an embodiment of the present invention;

7 is a flowchart of an embodiment of an object discovery method according to an embodiment of the present invention;

FIG. 8 is a schematic diagram showing the composition of an embodiment of an object discovery apparatus according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an embodiment of a base station according to an embodiment of the present invention; FIG.

11 is a flowchart of another embodiment of an object discovery method according to an embodiment of the present invention;

FIG. 12 is a schematic diagram showing the composition of another embodiment of an object discovery apparatus according to an embodiment of the present invention; FIG.

13 is a schematic structural diagram of another embodiment of a user equipment according to an embodiment of the present invention;

14 is a schematic structural diagram of another embodiment of a base station according to an embodiment of the present invention;

Figure 15 is a block diagram showing the structure of a communication system according to an embodiment of the present invention. detailed description

The foregoing and other features of the invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which illustrate the embodiments in which the principles of the invention may be employed, it is understood that the invention is not limited to the described embodiments, but instead The invention includes all modifications, variations and equivalents falling within the scope of the appended claims. Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and are not limiting of the invention.

Currently, the prior art related to object discovery is: The base station side periodically transmits a primary synchronization signal (PSS,

Primary Synchronization Signal (SSS, Secondary Synchronization Signal), the user performs initial synchronization by detecting PSS/SSS, and acquires the ID (IDentity) of the cell. The PSS/SSS is located on some Orthogonal Frequency Division Multiplexing (OFDM) symbols of a downlink subframe of a Long Term Evolution (LTE) system. In the LTE FDD (Frequency Division Duplexing) system, the SSS is located in OFDM symbol 5 of subframe 0 and subframe 5, and the PSS is located in OFDM symbol 6 of subframe 0 and subframe 5. In the LTE TDD (Time Division Duplexing) system, the SSS is located in the last OFDM symbol of subframe 0 and subframe 5, and the PSS is located in OFDM symbol 2 of subframe 1 and subframe 6. In the LTE FDD and LTE TDD systems, the PSS/SSS occupies the middle 62 subcarriers of the 72 subcarriers in the system bandwidth center in the frequency domain. If the PSS/SSS in the above prior art is used as the sequence part of the D2D discovery signal, there are the following problems: (1) The subcarrier of the PSS/SSS located in the OFDM on the downlink resource, for all users Relatively easy to detect, so it is located at the center of the system bandwidth, and the D2D discovery signal is transmitted by the user on the uplink resource. Although it is hoped to support multi-user multiplexing, it is not necessary to use the same resources all the time; (2) PSS/ The role of SSS is to allow the user to obtain coarse synchronization, identify the physical layer cell ID (range 3 X 168 = 504 IDs), obtain the cyclic prefix (CP, Cyclic Prefix) type, and the sequence part of the D2D discovery signal has initial synchronization. In addition to automatic gain control (AGC) training, there is no need to identify as many candidate IDs. (3) For the resource selection, if the resource location used by the PSS/SSS is copied, it will interfere with the uplink control information (UCI, Uplink Control Infor-mation) carried on the physical uplink shared channel (PUSCH). For example, Channel Quality Indicator (CQI), Precoding Matrix Indicator (RI, Rank Indicator), ACK, Acknowledement, Negative ACKnowledgement, etc.

In order to at least solve the above problems, the embodiments of the present invention provide a resource configuration method, an object discovery method, a device, and a communication system, which are configured to allocate D2D discovery signals for D2D discovery signals, and implement object discovery and synchronization. At the same time, the interference of D2D communication to cellular communication is reduced. The method, apparatus and system of the present embodiment will be described in detail below with reference to the accompanying drawings.

Example 1

The embodiment of the invention provides a resource configuration method, which is applied to a base station in a cellular communication system. Figure 1 is a flow chart of the method. Referring to Figure 1, the method includes:

Step 101: The base station configures, for the transceiver in the device-to-device communication, a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in the time domain, for a regular cyclic prefix (CP), the resource occupies The 0th and/or 6th and/or 7th and/or 13th single-carrier frequency division multiple access (SC-FDMA) symbols of the subframe, for the extended CP, The resource occupies the 5th and/or 11th SC-FDMA symbol of each subframe.

In this embodiment, on the PUSCH of the uplink subframe of the cellular communication system, some UCI is allowed to be carried, so in the time domain, selecting the appropriate SC-FDMA symbol to carry the D2D discovery signal sequence and/or the D2D reference signal can be avoided. Interference is generated for UEs that are transmitting cellular services.

Figure 2 shows the various UCI and demodulation reference signals (DMRS, DeModulation) in the case of a conventional CP. Reference Signal) Schematic diagram of the SC-FDMA symbols that may be occupied, as shown in Figure 2, the 3rd and 10th SC-FDMA symbols are used to transmit DMRS, and the SC-FDMA symbols on both sides of the DM S are used to transmit hybrid automatic ACK/NACK of the HARQ (Hybrid Automatic Repeat Request), and then the SC-FDMA symbols on both sides are used to transmit the RI.

In an embodiment of the present embodiment, in the case of a conventional CP, the 0th, 6th, 7th, and 13th SC-FDMA symbols are used to carry the D2D discovery signal sequence and/or the D2D reference signal, thereby avoiding D2D discovery. The signal sequence and/or the D2D reference signal collides with the RI, ACK/NACK, and DMRS. In this embodiment, since the CQI/PMI occupies all SC-FDMA symbols, the D2D discovery sequence number and/or the D2D reference signal and the CQI/PMI conflict on the SC-FDMA symbol may be disregarded, but still can be selected. Staggered in the frequency domain.

In another embodiment of this embodiment, in the case of a regular CP, the 13th SC-FDMA symbol may be used to carry the SRS, and the 0th SC-FDMA symbol may be used to make the guard interval vacant or perform other The transmission of the RS, so in this embodiment, only the sixth, seventh SC-FDMA symbols are used to carry the D2D discovery signal sequence and/or the D2D reference signal.

Similarly, for the case of extended CP, as shown in Fig. 3, the fifth SC-FDMA symbol and/or the eleventh SC-FDMA symbol can be used to transmit the D2D discovery signal sequence and/or the D2D reference signal.

In this embodiment, the D2D reference signal is used to demodulate the D2D discovery message and the data channel of the D2D communication. In this embodiment, the time domain resource mapping method of Time Division Multiplexing (TDM) is avoided by the reference signal/UCI of the uplink transmission of the cellular communication system to avoid mutual interference.

In an embodiment of this embodiment, in the frequency domain, which physical resource blocks (PRBs) are used by the resource,

Physical Resource Block) and which subcarriers can be configured or predefined by the base station. For example, the location of the PRB occupied by the resource may be a set of PRBs. In the set of PRBs, each PRB may be continuous or non-contiguous; the location of the subcarrier occupied by the resource may be a PRB. All subcarriers may also be partial subcarriers of the PRB, that is, a subset of all subcarriers. The partial subcarriers herein may be sub-carriers of a comb structure, wherein the spacing of subcarriers in the frequency domain may be configured, and different subcarrier spacings may correspond to different D2D discovery signal sequences.

4 is a schematic diagram of subcarriers occupied by resources in the frequency domain according to the embodiment. As shown in FIG. 4, different subcarriers corresponding to one or some PRBs on a certain SC-FDMA symbol may bear different forms. The D2D discovery signal sequence. For example, 401 indicates that each subcarrier of a PRB can carry a D2D discovery signal sequence; 402 and 403 indicate that a partial subcarrier of a PRB can carry a D2D discovery signal sequence, and a subcarrier carrying a D2D discovery signal sequence is a dressing structure, wherein 402 indicates that the interval of the dressing structure is 1, and at this time, the transceiver end of the D2D communication can be It is configured or configured to transmit the D2D discovery signal sequence by using one of the two offset values; 403 indicates that the interval of the dressing structure is 2, and at this time, the transceiver end of the D2D communication can be configured or configured to use 3 partial offsets. Move one of them.

In this embodiment, the base station may be configured to transmit the D2D discovery message for the transceiver of the D2D communication, in addition to configuring the foregoing resource for transmitting the D2D discovery signal sequence and/or the D2D reference signal for the transceiver end of the D2D communication. The resource, so that the receiving end of the D2D communication demodulates the D2D discovery message on the resource after demodulating the D2D discovery signal sequence. The resource used for transmitting the D2D discovery message is determined by the base station according to factors such as the network status, and the embodiment is not limited thereto. The resource for transmitting the D2D discovery message is not required. In an implementation manner, the originator in the D2D communication does not send the D2D discovery message, and the base station does not need to configure the resource for the D2D discovery message.

The D2D discovery signal resource for D2D communication is configured for the transceiver end of the D2D communication by the method of the embodiment, and the interference with the cellular communication system is avoided while realizing the discovery and synchronization of the object.

The embodiment of the present invention further provides a resource configuration apparatus, which is similar to the method of Embodiment 1 because the method for solving the problem is similar to the method of Embodiment 1, and the specific implementation thereof may refer to the method of Embodiment 1 Implementation, content is the same and will not be repeated.

Example 2

The embodiment of the invention provides a resource configuration device, and the device is applied to a base station. Figure 5 is a schematic diagram of the composition of the device. As shown in Figure 5, the device 500 includes:

a configuration unit 501 configured to allocate, by the transceiver in the device-to-device communication, a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in the time domain, for a regular cyclic prefix (CP), the resource occupation 0th and/or 6th and/or 7th and/or 13th single carrier frequency division multiple access (SC-FDMA) symbols for each subframe, for an extended CP, the resources occupy each subframe 5th and / or 11th SC-FDMA symbols.

In an embodiment of the present embodiment, in a frequency domain, a location of a physical resource block (PRB) occupied by the resource is a set of PRBs, and a PRB in the set of the PRBs is continuous or non-contiguous. The subcarrier occupied by the resource is all subcarriers or partial subcarriers of each PRB occupied by the resource.

In an embodiment of the embodiment, the configuration unit 501 is further configured to provide a transceiver for the D2D communication. A resource that is used to transmit D2D discovery messages.

The device of the present embodiment configures the D2D discovery signal resource for D2D communication for the transceiver end of the D2D communication, and avoids interference with the cellular communication system while realizing the discovery and synchronization of the object.

Example 3

The embodiment of the present invention further provides a base station, where the base station includes the resource configuration device described in Embodiment 2.

FIG. 6 is a schematic diagram of a structure of a base station according to an embodiment of the present invention. As shown in FIG. 6, base station 600 can include: a central processing unit (CPU) 601 and memory 602; and memory 602 is coupled to central processing unit 601. The memory 602 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 601 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment.

In one embodiment, the functionality of the resource configuration device can be integrated into the central processor 601. The central processing unit 601 can be configured to:

Configuring a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal for a transceiver in device-to-device communication; wherein, in the time domain, for a regular cyclic prefix (CP), the resource occupies the first of each subframe 0 and / or 6th and / or 7th and / or 13th single carrier frequency division multiple access (SC-FDMA) symbols, for extended CP, the resource occupies the 5th and / / of each subframe Or the 11th SC-FDMA symbol.

Optionally, in the frequency domain, the location of the physical resource block (PRB) occupied by the resource is a set of PRBs, and the PRBs in the set of the PRBs are continuous or non-contiguous, and the resources are occupied by the resources. The subcarriers are all subcarriers or partial subcarriers of each PRB occupied by it.

Optionally, the central processing unit 601 is further configured to: configure, for the transceiver of the D2D communication, a resource for transmitting a D2D discovery message.

In another embodiment, the resource configuration device can be configured separately from the central processing unit. For example, the resource configuration device can be configured as a chip connected to the central processing unit 601, and the function of the resource configuration device can be implemented by the control of the central processing unit 601.

In addition, as shown in FIG. 6, the base station 600 may further include: a transceiver 603, an antenna 604, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 600 also does not have to include all the components shown in FIG. 6; in addition, the base station 600 may further include components not shown in FIG. 6, and reference may be made to the prior art. The base station of the embodiment configures the resources of the D2D discovery signal for D2D communication for the transceiver end of the D2D communication, and avoids interference with the cellular communication system while realizing the discovery and synchronization of the object.

Example 4

The embodiment of the invention provides an object discovery method, which is applied to a communication device for performing D2D communication, and the communication device may be a UE performing D2D communication or a base station performing D2D communication. 7 is a flowchart of the object discovery method of the present embodiment. As a transmitting end of D2D communication, in this embodiment, referring to FIG. 7, the method includes:

Step 701: Send a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in a time domain, for a regular CP, the resource occupation 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe, for an extended CP, the resource occupies the 5th and/or 11th of each subframe SC-FDMA symbols.

In an embodiment of the present embodiment, the location of the PRB occupied by the resource may be a set of PRBs in the frequency domain, and the PRBs in the set of the PRBs may be continuous or non-contiguous. The subcarrier occupied by the resource may be all subcarriers or partial subcarriers of each PRB occupied by the resource.

In this embodiment, the location of the resource for transmitting the D2D discovery signal sequence and/or the D2D reference signal in the time domain and in the frequency domain has been described in detail in Embodiment 1, and its content is incorporated in Therefore, it will not be described here.

In an embodiment of the present embodiment, the format and/or the logical identifier corresponding to the D2D discovery signal sequence may be determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or discontinuous The number of PRBs occupied by the resources; the frequency domain location of the PRBs occupied by the resources; the location of the SC-FDMA symbols occupied by the resources; the number of SC-FDMA symbols occupied by the resources The interval of the subcarriers occupied by the resources; the offset value of the subcarriers occupied by the resources; the length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; the D2D discovery signal sequence index of.

For example, Format #1 uses the sixth SC-FDMA symbol in six consecutive PRBs, using a dressing structure with an offset of 0, a subcarrier spacing of 15 kHz, and a sequence length of 6 X 12/2 = 36 .

In this embodiment, the type of the D2D discovery signal sequence may be a Zadoff-Chu sequence, an m sequence or a gold sequence, etc., and the embodiment is not limited thereto. In an embodiment of the present embodiment, the format and/or the logical identifier and/or the sequence index and/or the cyclic shift (phase rotation) of the sequence corresponding to the D2D discovery signal sequence may further indicate whether a D2D discovery message exists and The resource in which the D2D discovery message is located in the presence of the resource. Therefore, the receiving end of the D2D communication may determine whether it is necessary to demodulate the D2D discovery signal sequence according to the format corresponding to the D2D discovery signal sequence and/or the logical identifier and/or the sequence index and/or the cyclic displacement indication of the sequence. Also demodulate the D2D discovery message. For example, a rule may be agreed that a D2D discovery signal sequence of a certain type of format is not subsequently transmitted by a corresponding D2D discovery message, and then, at a time when the receiving end of the D2D communication receives the D2D discovery signal sequence of the format, Make sure there is no D2D discovery message. And, the receiving end of the D2D communication further determines, according to the format corresponding to the D2D discovery signal sequence and/or the logical identifier and/or the index of the sequence index and/or the cyclic displacement of the sequence, that the D2D discovery message exists, further according to the D2D An indication of the format and/or logical identity of the signal sequence and/or sequence index and/or cyclic shift of the sequence is found to determine the resource in which the D2D discovery message is located. For example, the various possibilities of the location of the PRB or PRB group that the D2D discovery message may occupy are numbered, and then the number and/or logical identity and/or sequence index and/or sequence corresponding to the D2D discovery signal sequence may be assigned. The cyclic shift is associated, and the receiving end of the D2D communication can derive the corresponding D2D discovery message by using the format and/or logical identifier of the D2D discovery signal sequence and/or the cyclic index of the sequence index and/or sequence or by looking up the table. resource of.

In an embodiment of the present embodiment, the communication device can also serve as a receiving end of the D2D communication, and the communication device can also be configured at the base station before the communication device sends the D2D discovery signal sequence and/or the D2D reference signal. A D2D discovery signal sequence and/or a D2D reference signal transmitted by another communication device is detected or demodulated on a resource for transmitting the D2D discovery signal sequence and/or the D2D reference signal.

When a D2D discovery signal sequence and/or a D2D reference signal transmitted by another communication device is found or detected within a predetermined period, the transmitting end of the D2D communication is triggered to transmit its own D2D discovery signal sequence and/or D2D reference signal ( Step 701); when the D2D discovery signal sequence and/or the D2D reference signal transmitted by the other communication device is not found or detected within a predetermined period, and then the transmitting end of the D2D communication is triggered to transmit its own D2D discovery signal sequence and/or Or D2D reference signal (step 701).

In the present embodiment, the predetermined period may be preset or configured.

With this embodiment, the effectiveness and flexibility of D2D communication is increased.

With the method of the embodiment, the D2D discovery signal is transmitted by the base station for transmitting the D2D discovery signal configured by the transmitting end of the D2D communication, that is, the D2D discovery signal is mapped to the base station for the D2D communication. The transmission of the resource for transmitting the D2D discovery signal configured by the sending end enables the discovery and synchronization of the object (UE or base station) while avoiding the interference of the D2D communication to the cellular communication.

The embodiment of the present invention further provides an object discovery device, as described in the following embodiment 5. The principle of solving the problem is similar to the method of the embodiment 4, and the specific implementation thereof may refer to the method of the embodiment 4. Implementation, content is the same and will not be repeated.

Example 5

The embodiment of the invention provides an object discovery device, which can be applied to a communication device for performing D2D communication, where the communication device can be a UE or a base station. Figure 8 is a schematic diagram showing the composition of the apparatus. As shown in Figure 8, the apparatus 800 includes:

a transmitting unit 801, which transmits a D2D discovery signal sequence and/or a D2D reference signal on a resource for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in the time domain, for a regular CP, the resource occupation 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of a subframe, for an extended CP, the resource occupies the 5th and/or 11th of each subframe SC-FDMA symbol.

In an embodiment of the present embodiment, in the frequency domain, the location of the PRB occupied by the resource is a set of PRBs, and the PRBs in the set of the PRBs are continuous or non-contiguous. The occupied subcarriers are all subcarriers or partial subcarriers of each PRB occupied by them.

In an embodiment of the present embodiment, the format and/or the logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous The number of PRBs occupied by the resources; the frequency domain location of the PRBs occupied by the resources; the location of the SC-FDMA symbols occupied by the resources; the number of SC-FDMA symbols occupied by the resources; An interval of subcarriers occupied by the resource; an offset value of the subcarrier occupied by the resource; a length of the D2D discovery signal sequence; a root sequence of the D2D discovery signal sequence; and a D2D discovery signal sequence index.

In an embodiment of the present embodiment, the format and/or the logical identifier and/or the sequence index and/or the cyclic shift of the sequence corresponding to the D2D discovery signal sequence indicate whether a D2D discovery message exists and, if present, Describe the resources where the D2D discovery message is located.

In an embodiment of the embodiment, the device further includes:

a detecting unit 802, before the transmitting unit 801 sends the D2D discovery signal sequence and/or the D2D reference signal, on a resource configured by the base station for transmitting the D2D discovery signal sequence and/or the D2D reference signal Detecting or demodulating a D2D discovery signal sequence and/or a D2D reference signal transmitted by other communication devices.

The determining unit 803: based on the detection result of the detecting unit 802, determines whether the D2D discovery signal sequence and/or the D2D reference signal transmitted by the other communication device is found or detected within a predetermined period.

The transmitting unit 801 triggers transmitting the D2D discovery signal sequence and/or the D2D reference signal when a D2D discovery signal sequence and/or a D2D reference signal transmitted by another communication device is detected or detected within a predetermined period; When the D2D discovery signal sequence and/or the D2D reference signal transmitted by other communication devices are not detected or detected in the period, the D2D discovery signal sequence and/or the D2D reference signal of the above-mentioned D2D discovery signal is triggered.

With the device of the embodiment, the D2D discovery signal is transmitted by the base station for transmitting the D2D discovery signal configured by the transmitting end of the D2D communication, that is, the D2D discovery signal is mapped to the base station configured for transmitting the D2D for the transmitting end of the D2D communication. The discovery signal is transmitted on the resource, and the discovery and synchronization of the object (UE or base station) is realized, and the interference of the D2D communication to the cellular communication is avoided.

Example 6

The embodiment of the present invention further provides a communication device, wherein the communication device includes the object discovery device described in Embodiment 5.

In this embodiment, the communication device can include: a central processing unit and a memory; the memory coupled to the central processing unit.

Wherein, the central processor can be configured to:

Transmitting a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting the D2D discovery signal sequence and/or the D2D reference signal for the communication device; wherein, in the time domain, for the regular CP, the resource Occupying the 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe, for an extended CP, the resource occupies the 5th and/or the 5th of each subframe 11 SC-FDMA symbols.

Optionally, in the frequency domain, the location of the PRB occupied by the resource is a set of PRBs, and the PRBs in the set of the PRBs are consecutive or non-contiguous, and the subcarriers occupied by the resources are All subcarriers or partial subcarriers of each PRB occupied.

Optionally, the format and/or the logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous; Number of PRBs; frequency domain locations of PRBs occupied by the resources; occupied by the resources The location of the SC-FDMA symbol; the number of SC-FDMA symbols occupied by the resource; the interval of the subcarrier occupied by the resource; the offset value of the subcarrier occupied by the resource; the D2D discovery signal sequence The length of the D2D discovery signal sequence; the index of the D2D discovery signal sequence.

Optionally, the format and/or the logical identifier and/or the sequence index and/or the cyclic shift (phase rotation) of the sequence of the D2D discovery signal sequence indicate whether a D2D discovery message exists and, if present, the D2D Discover the resource where the message is located.

Optionally, the central processing unit is further configured to detect or demodulate on the resource configured by the base station for transmitting the D2D discovery signal sequence and/or the D2D reference signal before transmitting the D2D discovery signal sequence and/or the D2D reference signal. A D2D discovery signal sequence and/or a D2D reference signal transmitted by other communication devices.

Wherein, when a D2D discovery signal sequence and/or a D2D reference signal transmitted by another communication device is found or detected within a predetermined period, the central processor triggers transmitting the D2D discovery signal sequence and/or the D2D reference signal; The central processor then triggers transmission of the D2D discovery signal sequence and/or the D2D reference signal when no D2D discovery signal sequence and/or D2D reference signal transmitted by other communication devices is detected or detected within a predetermined period.

In an embodiment of the embodiment, the communication device may be a user equipment, and FIG. 9 is the user equipment.

A schematic diagram of the system configuration of 900, it is noted that the figure is schematic, and other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

As shown in FIG. 9, the user equipment 900 includes a central processing unit 901 and a memory 902. The function of the object discovery device may be integrated into the central processing unit 901 or may be configured separately from the central processing unit 901. For example, the object discovery device may be configured as a chip connected to the central processing unit 901 through the central processing unit 901. Control to implement the function of the object discovery device.

As shown in FIG. 9, the user equipment 900 may further include: a communication module 903, an input unit 904, an audio processing unit 905, a display 906, and a power source 907. It should be noted that the user equipment 900 does not necessarily include all of the components shown in FIG. 9. Further, the user equipment 900 may also include components not shown in FIG. 9, and reference may be made to the prior art.

As shown in FIG. 9, central processor 901, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 900. The operation of the part.

The memory 902 can be, for example, a buffer, a flash memory, a hard drive, a removable medium, and a volatile storage. One or more of a device, a non-volatile memory, or other suitable device. The above-mentioned information related to the failure can be stored, and a program for executing the related information can be stored. And the central processing unit 901 can execute the program stored in the memory 902 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. The various components of user equipment 900 may be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention.

In another embodiment of the present embodiment, the communication device may be a base station, and FIG. 10 is a schematic diagram of a system configuration of the base station 1000. As shown in FIG. 10, the base station 1000 may include: a central processing unit 1001 and a memory 1002; 1002 is coupled to central processor 1001. The memory 1002 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1001 to receive various information transmitted by the user equipment, and to transmit the request information to the user equipment.

As shown in FIG. 10, the function of the object discovery device may be integrated into the central processing unit 1001 or may be configured separately from the central processing unit 1001. For example, the object discovery device may be configured as a chip connected to the central processing unit 1001 through the center. The control of the processor 1001 implements the functions of the object discovery device.

In addition, as shown in FIG. 10, the base station 1000 may further include: a transceiver 1003, an antenna 1004, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 1000 does not have to include all the components shown in FIG. 10; in addition, the base station 1000 may further include components not shown in FIG. 10, and reference may be made to the prior art.

With the communication device of the embodiment, the D2D discovery signal is transmitted by the base station for transmitting the D2D discovery signal configured by the transmitting end of the D2D communication, thereby realizing the discovery and synchronization of the object, and avoiding the interference of the D2D communication and the cellular communication.

Example 7

The embodiment of the present invention further provides an object discovery method, which is a process of a communication device at a receiving end in a D2D communication process corresponding to the method of Embodiment 4, and corresponds to a transmitting end of the D2D communication, and the communication device of the receiving end may be a UE. It can also be a base station. Figure 11 is a flow chart of the method. Please refer to Figure 11 as the receiving end of D2D communication. The method includes:

Step 1101: Detecting or demodulating a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in the time domain, for a regular CP, The resource occupies the 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe. For the extended CP, the resource occupies the 5th and/or of each subframe. Or the eleventh SC-FDMA symbol.

The format and/or the logical identifier corresponding to the D2D discovery signal sequence have been described in detail in Embodiment 4, and the content thereof is incorporated herein, and details are not described herein again.

In an embodiment of the embodiment, the method further includes:

Step 1102: After demodulating the D2D discovery signal sequence, determine whether a D2D discovery message exists according to a format and/or a logical identifier and/or a sequence index and/or a cyclic shift of the sequence corresponding to the D2D discovery signal sequence.

Step 1103: If it is determined to be present in step 1102, determine the resource where the D2D discovery message is located according to a format and/or a logical identifier and/or a sequence index and/or a cyclic shift of the sequence corresponding to the D2D discovery signal sequence. The D2D discovery message is detected or demodulated at the resource where the D2D discovery message is located.

In the present embodiment, when it is determined in step 1102 that there is no such existence, the processing is terminated.

In the present embodiment, the method of indicating whether there is a D2D discovery message and the resource in which the D2D discovery message is present has been described in detail in Embodiment 4, and the content thereof is incorporated herein, and details are not described herein again.

In an embodiment of the present embodiment, the communication device can also serve as a transmitting end of the D2D communication, and the communication device detects or demodulates through the step 1101, and discovers or detects other communications within a predetermined period. When the D2D discovery signal sequence and/or the D2D reference signal sent by the signaling device, the transmitting end of the D2D communication is triggered to transmit its own D2D discovery signal sequence and/or D2D reference signal; when no other component is detected or detected within a predetermined period When the D2D discovery signal sequence and/or the D2D reference signal transmitted by the communication device is triggered, the transmitting terminal of the D2D communication transmits its own D2D discovery signal sequence and/or D2D reference signal.

Through the method of the embodiment, the resource detection or demodulation D2D discovery signal for transmitting the D2D discovery signal configured by the base station for the D2D communication is realized, and the object discovery and synchronization are realized, and the D2D communication is avoided for the cellular communication. interference.

The embodiment of the present invention further provides an object discovery device, as described in the following embodiment 8. Since the principle of solving the problem is similar to the method of the seventh embodiment, the specific implementation may refer to the method of the seventh embodiment. Implementation, content is the same and will not be repeated.

Example 8

An embodiment of the present invention provides an object discovery apparatus, which is applied to a communication device, and the communication device may be a UE or a base station. Figure 12 is a schematic diagram of the composition of the device. Referring to Figure 12, the device 1200 includes:

a first processing unit 1201, which detects or demodulates a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting a D2D discovery signal sequence and/or a D2D reference signal; wherein, in the time domain, a conventional CP, the resource occupies the 1st and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe, and for an extended CP, the resource occupies the first of each subframe 5 and/or 11th SC-FDMA symbols.

In an embodiment of the present embodiment, the format and/or the logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous The number of PRBs occupied by the resources; the frequency domain location of the PRBs occupied by the resources; the location of the SC-FDMA symbols occupied by the resources; the number of SC-FDMA symbols occupied by the resources; The interval of the subcarriers occupied by the resources; the offset value of the subcarriers occupied by the resources; the D2D The length of the signal sequence; the root sequence of the D2D discovery signal sequence; the index of the D2D discovery signal sequence.

In an embodiment of the embodiment, the device further includes:

a determining unit 1202, after the first processing unit demodulates the D2D discovery signal sequence, according to a format and/or a logical identifier of the D2D discovery signal sequence and/or a sequence index and/or a cyclic shift of the sequence , determining whether there is a D2D discovery message;

a determining unit 1203, where the determining unit 1202 determines that, in the presence of the D2D discovery signal sequence, the format and/or the logical identifier and/or the sequence index and/or the cyclic displacement of the sequence, the determining The resource where the D2D discovery message is located;

The second processing unit 1204 detects or demodulates the D2D discovery message at the resource where the D2D discovery message determined by the determining unit 1203 is located.

In an embodiment of the embodiment, the device further includes:

The sending unit 1205, according to the processing result of the first processing unit 1201, sends a D2D discovery of the communication device when a D2D discovery signal sequence and/or a D2D reference signal transmitted by another communication device is found or detected within a predetermined period. a signal sequence and/or a D2D reference signal; transmitting the above-described D2D discovery signal sequence and/or D2D reference when no D2D discovery signal sequence and/or D2D reference signal transmitted by another communication device is detected or detected within a predetermined period; signal.

Through the apparatus of the embodiment, the resource detection or demodulation D2D discovery signal for transmitting the D2D discovery signal configured by the base station for the D2D communication is realized, and the object discovery and synchronization are realized, and the D2D communication is avoided for the cellular communication. interference.

Example 9

The embodiment of the present invention further provides a communication device, wherein the communication device includes the object discovery device described in Embodiment 8.

In an embodiment of the present embodiment, the communication device is a user equipment, and FIG. 13 is a schematic block diagram of a system configuration of the user equipment 1300 according to the embodiment of the present invention. As shown in FIG. 13, the user equipment 1300 can include a central processor 1301 and a memory 1302; the memory 1302 is coupled to the central processor 1301. It is worth noting that the figure is exemplary; other types of structures can be used to supplement or replace the structure to achieve Telecom function or other features.

In one embodiment, the functionality of the object discovery device can be integrated into the central processor 1301. The central processor 1301 can be configured to:

Detecting or demodulating a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting the D2D discovery signal sequence and/or the D2D reference signal for the user equipment; wherein, in the time domain, for the regular CP, The resource occupies the 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbols of each subframe, and for the extended CP, the resource occupies the 5th sum of each subframe / or the 11th SC-FDMA symbol.

Optionally, the format/logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous; The number of the frequency domain of the PRB occupied by the resource; the location of the SC-FDMA symbol occupied by the resource; the number of SC-FDMA symbols occupied by the resource; the subcarrier occupied by the resource The interval of the subcarrier occupied by the resource; the length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; and the index of the D2D discovery signal sequence.

Optionally, the central processing unit 1301 can be configured to:

After the user equipment demodulates the D2D discovery signal sequence, determining whether a D2D discovery message exists according to a format and/or a logical identifier and/or a sequence index and/or a cyclic shift of the sequence corresponding to the D2D discovery signal sequence. ;

Determining, in the case of the presence, the resource in which the D2D discovery message is located according to a format and/or a logical identifier and/or a sequence index and/or a cyclic shift of the sequence corresponding to the D2D discovery signal sequence; The resource where the message is found detects or demodulates the D2D discovery message.

Optionally, the central processing unit 1301 is further configured to trigger, when the D2D discovery signal sequence and/or the D2D reference signal sent by another communication device is found or detected within a predetermined period according to the foregoing detection or demodulation result. Transmitting the D2D discovery signal sequence and/or the D2D reference signal of the user equipment 1300; triggering to send the user equipment when no D2D discovery signal sequence and/or D2D reference signal sent by another communication device is detected or detected within a predetermined period; A D2D discovery signal sequence of 1300 and/or a D2D reference signal. In the present embodiment, the predetermined period may be preset or configured.

In another embodiment, the object discovery device may be configured separately from the central processing unit 1301. For example, the object discovery device may be configured as a chip connected to the central processing unit 1301, and the function of the object discovery device is implemented by the control of the central processing unit 1301. .

As shown in FIG. 13, the user equipment 1300 may further include: a communication module 1303, an input unit 1304, an audio processing unit 1305, a display 1306, and a power source 1307. It should be noted that the user equipment 1300 does not have to include all the components shown in FIG. 13; in addition, the user equipment 1300 may also include components not shown in FIG. 13, and reference may be made to the prior art.

As shown in FIG. 13, central processor 1301, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 1300. The operation of the part.

The memory 1302 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. The above-mentioned information related to the failure can be stored, and a program for executing the related information can be stored. And the central processing unit 1301 can execute the program stored in the memory 1302 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. The various components of user equipment 1300 may be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention.

In another embodiment of the present embodiment, the communication device may be a base station, and FIG. 14 is a schematic diagram of a system configuration of the base station 1400. As shown in FIG. 14, the base station 1400 may include: a central processing unit 1401 and a memory 1402; 1402 is coupled to central processor 1401. The memory 1402 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1401 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment.

As shown in FIG. 14, the function of the object discovery device may be integrated into the central processing unit 1401 or may be configured separately from the central processing unit 1401. For example, the object discovery device may be configured as a chip connected to the central processing unit 1401 through the center. The control of the processor 1401 implements the functions of the object discovery device. The function of the object discovery device has been described in Embodiment 8, and details are not described herein again.

In addition, as shown in FIG. 14, the base station 1400 may further include: a transceiver 1403, an antenna 1404, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It is worth noting that the base station 1400 is not It is necessary to include all of the components shown in Fig. 14; in addition, the base station 1400 may further include components not shown in Fig. 14, and reference may be made to the prior art.

Through the communication device of the embodiment, the resource detection or demodulation D2D discovery signal for transmitting the D2D discovery signal configured by the base station for the D2D communication is realized, and the object discovery and synchronization are realized, and the D2D communication to the cellular communication is avoided. Interference.

Example 10

The embodiment of the present invention further provides a communication system, including a user equipment as described in Embodiment 6 and at least one user equipment as described in Embodiment 9.

Figure 15 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention. As shown in Figure 15, the communication system 1500 includes a communication device 1501 and at least one communication device 1502. The communication device 1501 may be the communication device described in Embodiment 6; the communication device 1502 may be the communication device described in Embodiment 9.

The communication device 1501 is configured as a transmitting end of the D2D communication to transmit a D2D discovery signal sequence and/or a D2D reference signal on a resource configured by the base station for transmitting a D2D discovery signal sequence and/or a D2D reference signal. ;

Wherein, the communication device 1502 is configured as a receiving end of the D2D communication to detect or demodulate a D2D discovery signal sequence and/or on a resource configured by the base station for transmitting a D2D discovery signal sequence and/or a D2D reference signal. D2D reference signal.

In an embodiment of the present embodiment, the format/logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-contiguous; The number of PRBs occupied by the resource; the frequency domain location of the PRB occupied by the resource; the location of the SC-FDMA symbol occupied by the resource; the number of SC-FDMA symbols occupied by the resource; The interval of the subcarriers occupied by the resources; the offset value of the subcarriers occupied by the resources; the length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; and the index of the D2D discovery signal sequence.

In an embodiment of the present embodiment, the communication system further includes a base station 1503, where the base station 1503 may be the base station 600 in Embodiment 3, configured to: serve as a transmitting end and a receiving device in the D2D communication. A resource configured to transmit a D2D discovery signal sequence and/or a D2D reference signal.

Wherein, in the time domain, for a regular cyclic prefix (CP), the resource occupies the 0th and/or 6th and/or 7th and/or 13th single carrier frequency division multiple access of each subframe (SC-FDMA) symbol, for an extended CP, the resource occupies the 5th and/or 11th SC-FDMA symbol of each subframe. In the frequency domain, the location of the physical resource block (PRB) occupied by the resource is a set of PRBs, and the PRBs in the set of the PRBs are continuous or non-contiguous, and the subordinates of the resources The carrier is all subcarriers or partial subcarriers of each PRB it occupies.

Through the communication system of the embodiment, the base station transmits or detects the D2D discovery signal for transmitting the D2D discovery signal configured by the transceiver end of the D2D communication, thereby realizing the discovery and synchronization of the object, and avoiding the D2D communication to the cellular communication. interference. The embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute the resource configuration method described in Embodiment 1 or Embodiment 4 or implement in the base station when the program is executed in a base station The object discovery method described in Example 7.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the resource configuration method described in Embodiment 1 in the base station or the method described in Embodiment 4 or Embodiment 7 Object discovery method.

The embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute the object discovery method described in Embodiment 4 or Embodiment 7 in the user equipment when the program is executed in a user equipment .

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the object discovery method described in Embodiment 4 or Embodiment 7 in a user equipment. The above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are illustrative and not restrictive. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

claims

1. A resource configuration device, applied to a base station, wherein the device includes:

A configuration unit that configures resources for transmitting the D2D discovery signal sequence and/or the D2D reference signal for the user equipment (D2D UE) in device-to-device communication;

Wherein, in the time domain, for conventional cyclic prefix (CP), the resource occupies the 0th and/or 6th and/or 7th and/or 13th single carrier frequency division multiple access of each subframe. (SC-FDMA) symbols, for extended CP, the resource occupies the 5th and/or 11th SC-FDMA symbol of each subframe.

2. The device according to claim 1, wherein in the frequency domain, the location of the physical resource block (PRB) occupied by the resource is a set of PRBs, and the PRBs in the set of PRBs are continuous or If non-continuous, the subcarriers occupied by the resources are all subcarriers or part of the subcarriers of each PRB occupied by them.

3. The apparatus according to claim 1, wherein the configuration unit further configures resources for transmitting D2D discovery messages for the D2D UE.

4. An object discovery device, applied to communication equipment, wherein the device includes:

A sending unit that sends on resources used to transmit D2D discovery signal sequences and/or D2D reference signals.

D2D discovery signal sequence and/or D2D reference signal;

Wherein, in the time domain, for conventional CP, the resource occupies the 0th and/or 6th and 6th subframes of each subframe.

/or the 7th and/or the 13th SC-FDMA symbol. For extended CP, the resource occupies the 13th SC-FDMA symbol of each subframe.

5th and/or 11th SC-FDMA symbol.

5. The device according to claim 4, wherein in the frequency domain, the position of the PRB occupied by the resource is a set of PRBs, and the PRBs in the set of PRBs are continuous or non-continuous, so The subcarriers occupied by the resources are all subcarriers or part of the subcarriers of each PRB occupied by them.

6. The device according to claim 4, wherein the format and/or logical identification corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: Whether the PRB occupied by the resource is continuous or Discontinuous; The number of PRBs occupied by the resource; The frequency domain position of the PRB occupied by the resource; The position of the SC-FDMA symbol occupied by the resource; The SC-FDMA symbol occupied by the resource The number of; the spacing of the subcarriers occupied by the resource; the offset value of the subcarriers occupied by the resource; the

The length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; the index of the D2D discovery signal sequence.

7. The device according to claim 4, wherein the format and/or logical identification and/or sequence index and/or cyclic displacement of the sequence corresponding to the D2D discovery signal sequence indicate whether there is a D2D discovery message and whether there is a D2D discovery message. In case the D2D discovery message is located on the resource.

8. The device according to claim 4, wherein the device further includes:

A detection unit that detects or demodulates the D2D discovery signal sequence and/or D2D reference signal sent by other communication devices on the resources used to transmit the D2D discovery signal sequence and/or D2D reference signal;

The sending unit sends the above-mentioned D2D discovery signal sequence and/or D2D reference signal when the detection unit does not discover or detect the D2D discovery signal sequence and/or D2D reference signal sent by the other communication device within a predetermined period.

9. An object discovery device, applied to communication equipment, wherein the device includes:

A first processing unit that detects or demodulates the D2D discovery signal sequence and/or the D2D reference signal on the resources used to transmit the D2D discovery signal sequence and/or the D2D reference signal;

Wherein, in the time domain, for conventional CP, the resource occupies the 0th and/or 6th and/or 7th and/or 13th SC-FDMA symbol of each subframe, and for extended CP, so The above resources occupy the 5th and/or 11th SC-FDMA symbol of each subframe.

10. The device according to claim 9, wherein in the frequency domain, the position of the PRB occupied by the resource is a set of PRBs, and the PRBs in the set of PRBs are continuous or non-continuous, so The subcarriers occupied by the resources are all subcarriers or part of the subcarriers of each PRB occupied by them.

11. The device according to claim 9, wherein the format and/or logical identification corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or Discontinuous; The number of PRBs occupied by the resource; The frequency domain position of the PRB occupied by the resource; The position of the SC-FDMA symbol occupied by the resource; The SC-FDMA symbol occupied by the resource The number of subcarriers occupied by the resource; The offset value of the subcarrier occupied by the resource; The length of the D2D discovery signal sequence; The root sequence of the D2D discovery signal sequence; The D2D discovery Index of the signal sequence.

12. The device according to claim 9, wherein the device further includes:

A judging unit that, after the processing unit demodulates the D2D discovery signal sequence, determines whether or not it is based on the format and/or logical identification and/or sequence index and/or cyclic displacement of the sequence corresponding to the D2D discovery signal sequence. There is a D2D discovery message; Determining unit, which determines the D2D discovery according to the format and/or logical identification and/or sequence index and/or cyclic displacement of the sequence corresponding to the D2D discovery signal sequence when the determination unit determines that it exists. The resource where the message is located;

A second processing unit that detects or demodulates the D2D discovery message in the resource where the D2D discovery message determined by the determining unit is located.

13. The device according to claim 9, wherein the device further includes:

A sending unit that sends the D2D discovery signal sequence and/or the D2D reference signal of the communication device when the first processing unit does not discover or detect the D2D discovery signal sequence and/or the D2D reference signal sent by other communication devices within a predetermined period. D2D reference signal.

14. A communication system, wherein the communication system includes: a sending end communication device in D2D communication and at least one receiving end communication device in D2D communication, wherein,

The sending end communication device is configured to send a D2D discovery signal sequence and/or a D2D reference signal on a resource used to transmit a D2D discovery signal sequence and/or a D2D reference signal;

The receiving end communication device is configured to detect or demodulate the D2D discovery signal sequence and/or the D2D reference signal on the resources used to transmit the D2D discovery signal sequence and/or the D2D reference signal;

Wherein, the format and/or logical identifier corresponding to the D2D discovery signal sequence is determined by any one or any combination of the following parameters: whether the PRB occupied by the resource is continuous or non-continuous; the PRB occupied by the resource The number of PRBs occupied by the resource; the frequency domain position of the PRB occupied by the resource; the position of the SC-FDMA symbol occupied by the resource; the number of SC-FDMA symbols occupied by the resource; the subcarrier occupied by the resource interval; the offset value of the subcarrier occupied by the resource; the length of the D2D discovery signal sequence; the root sequence of the D2D discovery signal sequence; the index of the D2D discovery signal sequence.

15. The communication system according to claim 14, wherein the communication system further includes a base station, wherein the base station is configured to:

Configure resources for transmitting D2D discovery signal sequences and/or D2D reference signals for the sending end communication device and the receiving end communication device in the D2D communication;

Wherein, in the time domain, for conventional cyclic prefix (CP), the resource occupies the 6th and/or 7th Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol of each subframe, and for extended CP, so The above resources occupy the 5th and/or 11th SC-FDMA symbol of each subframe.

16. The communication system according to claim 14, wherein in the frequency domain, the objects occupied by the resources The location of the management resource block (PRB) is a set of PRBs. The PRBs in the set of PRBs are continuous or non-continuous. The subcarriers occupied by the resources are all subcarriers of each PRB occupied by them. Or some subcarriers.