WO2016161623A1 - 发现信号的传输方法、装置以及通信*** - Google Patents

发现信号的传输方法、装置以及通信*** Download PDF

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Publication number
WO2016161623A1
WO2016161623A1 PCT/CN2015/076280 CN2015076280W WO2016161623A1 WO 2016161623 A1 WO2016161623 A1 WO 2016161623A1 CN 2015076280 W CN2015076280 W CN 2015076280W WO 2016161623 A1 WO2016161623 A1 WO 2016161623A1
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WIPO (PCT)
Prior art keywords
resource
resource pool
discovery signal
information
transmission device
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PCT/CN2015/076280
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English (en)
French (fr)
Inventor
周华
吴联海
徐海博
Original Assignee
富士通株式会社
周华
吴联海
徐海博
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 富士通株式会社, 周华, 吴联海, 徐海博 filed Critical 富士通株式会社
Priority to PCT/CN2015/076280 priority Critical patent/WO2016161623A1/zh
Priority to CN201580077690.3A priority patent/CN107409313B/zh
Publication of WO2016161623A1 publication Critical patent/WO2016161623A1/zh
Priority to US15/714,596 priority patent/US20180014174A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, an apparatus, and a communication system for transmitting a side link discovery signal.
  • Edge link discovery and communication can also be referred to as device-to-device (D2D) discovery and communication.
  • D2D device-to-device
  • the edge link communication mode means that the data packet does not need to pass through the core network and the base station, and the user equipment, for example, UE1 and UE2, can directly establish a communication link to perform communication.
  • the edge link discovery process is generally performed before the side link communication is performed. For example, before UE1 sends information to UE2 through side-link communication, it is first found whether UE2 is nearby.
  • Figure 1 is a schematic diagram of side link communication under cellular coverage.
  • a base station for example, an eNB
  • the assistance of the base station between two UEs can use the radio resources of the base station to establish both.
  • the connection between the two can be seen by one end, the discovery signal is sent by one end, and the discovery signal is received by the other end, so as to achieve the purpose of discovering the other party; after discovering the other party, data transmission between each other can be performed.
  • the discovery message sent by one end UE is a fixed size, which is 232 bits.
  • the number of physical resource block pairs (PRB pairs, physical resource block pairs) occupied by the corresponding physical layer side link discovery channel (PSDCH) is also fixed, and is occupied for each time slot (slot). 2 PRBs, that is, each subframe is occupied Two PRB pairs.
  • the resource pool of the PSDCH is defined in the standard, and the resource pool is a time-frequency resource in the LTE radio resource.
  • 2 is a schematic diagram of resource pool allocation of an existing PSDCH, as shown in FIG. 2, in which a resource block (RB) in a gray area is a resource pool for a PSDCH, such as a high layer signaling or medium.
  • the MAC (Media Access Control) layer is signaled to the user equipment.
  • each user equipment continuously occupies 2 PRBs in the frequency domain, and the time domain occupies two slots (slots) as one selection unit. Different user equipments can compete to select their own PSDCH in this resource pool. Resources.
  • the four PRBs in the shaded area are occupied by one user equipment, and the four PRBs in the other shaded area are occupied by another user equipment.
  • the standard defines that up to 4 resource pools can be configured. However, when the user equipment selects a PSDCH resource in any one of the resource pools, it still sends 2 PRBs per slot.
  • the discovery information may vary in size depending on the scene, for example, may be larger than 232 bits or smaller than 232 bits. If the new discovery information is less than 232 bits and still selects two PRB pairs, it will cause waste of resources; if the new discovery information is larger than 232 bits, the two PRB pairs may not be able to carry the discovery information.
  • Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting a discovery signal. Even if the information is found to be different in size depending on the scenario, it is possible to minimize the waste of resources or the unloading.
  • a method for transmitting a discovery signal is provided, which is applied to a user equipment, where the transmission method includes:
  • the edge link discovery signal is transmitted using the transmission resource.
  • a device for transmitting a discovery signal which is configured in a user equipment, where the transmission device includes:
  • the resource determining unit determines, according to the edge link discovery signal that needs to be sent, the sending resource from the resource pool; wherein the resource pool is divided in the frequency domain and/or the time domain to include multiple types;
  • the signal sending unit transmits the side link discovery signal using the transmission resource.
  • a method for transmitting a discovery signal is provided, which is applied to a base station, where the transmission method includes:
  • Configuring a resource pool wherein the resource pool is divided in a frequency domain and/or a time domain to include multiple types;
  • a device for transmitting a discovery signal which is configured in a base station, where the transmission device includes:
  • a resource pool configuration unit configured to allocate a resource pool; wherein the resource pool is divided in a frequency domain and/or a time domain to include multiple types;
  • the resource sending unit sends the information of the resource pool to the user equipment, so that the user equipment sends the edge link discovery signal by using the sending resource determined from the resource pool.
  • a communication system comprising:
  • the user equipment determines, according to the edge link discovery signal that needs to be sent, the sending resource from the resource pool, and sends the edge link discovery signal by using the sending resource, where the resource pool is in the frequency domain and/or the time domain. It is divided to include multiple types.
  • a computer readable program wherein when the program is executed in a user device, the program causes a computer to perform transmission of a discovery signal as described above in the user device method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a transmission method of a discovery signal as described above in a user equipment.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a transmission method of the discovery signal as described above in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a transmission method of a discovery signal as described above in a base station.
  • An advantageous effect of the embodiment of the present invention is that the user equipment determines a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and uses the transmission resource to send an edge link discovery signal.
  • the user equipment determines a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and uses the transmission resource to send an edge link discovery signal.
  • 1 is a schematic diagram of side link communication under cellular coverage
  • 2 is a schematic diagram of resource pool allocation of an existing PSDCH
  • FIG. 3 is a schematic diagram of UE-to-network relay discovery according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of discovery between members of a UE group according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of UE-to-UE relay discovery according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a method for transmitting a discovery signal according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic diagram of multiple types of resource pools divided in a frequency domain according to Embodiment 1 of the present invention.
  • FIG. 9 is a schematic diagram of multiple types of resource pools divided in a time domain according to Embodiment 1 of the present invention.
  • FIG. 10 is another schematic diagram of multiple types of resource pools divided in the time domain according to Embodiment 1 of the present invention.
  • FIG. 11 is another schematic diagram of a method for transmitting a discovery signal according to Embodiment 1 of the present invention.
  • FIG. 12 is another schematic diagram of a method for transmitting a discovery signal according to Embodiment 1 of the present invention.
  • FIG. 13 is a schematic diagram of a method for transmitting a discovery signal according to Embodiment 2 of the present invention.
  • FIG. 14 is a schematic diagram of a discovery signal transmission apparatus according to Embodiment 3 of the present invention.
  • FIG. 15 is another schematic diagram of a transmission device for discovering signals according to Embodiment 3 of the present invention.
  • FIG. 16 is another schematic diagram of a transmission device for discovering signals according to Embodiment 3 of the present invention.
  • FIG. 17 is a schematic diagram of a user equipment according to Embodiment 3 of the present invention.
  • FIG. 18 is a schematic diagram of a transmission device for discovering signals according to Embodiment 4 of the present invention.
  • FIG. 19 is another schematic diagram of a transmission device for discovering signals according to Embodiment 4 of the present invention.
  • FIG. 20 is a schematic diagram of a base station according to Embodiment 4 of the present invention.
  • Figure 21 is a diagram showing the communication system of Embodiment 5 of the present invention.
  • edge link services With the continuous development of standardization and the development of public safety services, more application scenarios need to provide edge link services.
  • edge link discovery function between UEs it is necessary to provide a more flexible mechanism.
  • FIG. 3 is a schematic diagram of UE-to-network relay discovery according to an embodiment of the present invention.
  • UE1 is in coverage of a base station (for example, an eNB), and UE2 and UE3 are outside the coverage of the eNB.
  • a base station for example, an eNB
  • UE2 and UE3 are outside the coverage of the eNB.
  • UE1 and UE2/3 are required.
  • FIG. 4 is a schematic diagram of discovery between members of a UE group according to an embodiment of the present invention. As shown in FIG. 4, UE1 is also outside network coverage. If UE1 wants to send a message (for example, a broadcast message) to surrounding UEs, 3 is also outside the network coverage and requires discovery between UE1 and UE2/3.
  • a message for example, a broadcast message
  • FIG. 5 is a schematic diagram of UE-to-UE relay discovery according to an embodiment of the present invention. As shown in FIG. 5, if UE2 and UE3 want to establish contact with UE0 through UE1, UE0, UE1, and UE2/3 need to be found. The function, and the requirements of the discovery function are different from the requirements of the first two discovery functions.
  • the edge link If considering the function expansion requirement of the edge link, it is required to provide at least three kinds of discovery message transmission, corresponding to the UE-to-Network relay discovery shown in FIG. 3, the Group Member discovery shown in FIG. 4, and the FIG.
  • the UE-to-UE relay finds that the length of each discovery message is no longer 232 bits as specified in the original standard. That is, the current discovery information may vary in size depending on the scene.
  • the length of the new three discovery messages exceeds 232 bits, it is necessary to compress the information into the original PSDCH channel designed for 232 bits; if it is too long, it may be impossible to put it into the PSDCH even if it is compressed.
  • the length of the new discovery message is less than 232 bits, if it is placed in the original PSDCH channel, it will cause a waste of wireless resources.
  • FIG. 6 is a schematic diagram of a method for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 6, the transmission method includes:
  • Step 601 The user equipment determines, according to the edge link discovery signal that needs to be sent, the sending resource from the resource pool, where the resource pool is divided in the frequency domain and/or the time domain to include multiple types.
  • Step 602 The user equipment sends the edge link discovery signal by using the sending resource.
  • the resource pool is divided into multiple types on the frequency domain and/or the time domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • some resource pools carry discovery signals by one PRB
  • some resource pools carry discovery signals by two PRBs
  • the resource pool can be configured by the base station and sent to the user equipment.
  • the transmission resource is determined from the resource pool according to the size of the edge link discovery signal, and the edge link discovery process is performed; the UE in this case For example, it may be UE1 in the scenario shown in FIG.
  • the user equipment may also store the information of the resource pool.
  • the sending resource is determined from the resource pool according to the size of the edge link discovery signal, and the edge chain is performed.
  • the path discovery process; the UE in this case may be, for example, UE1 in the scenario shown in FIG. 4 or 5.
  • the user equipment can flexibly select appropriate resources for edge link discovery from different types of resource pools according to the size of the sent information, and can minimize resource waste even if the information is found to be different in size due to different scenarios. Or the situation that cannot be carried.
  • the resource pool can be divided into multiple types in the frequency domain. That is, the base station configures multiple sets of transmission channel radio resource pools for sending discovery messages, each set corresponding to one message transmission format, and multiple sets of resource pools may be separated according to the frequency domain.
  • FIG. 7 is a schematic diagram of multiple types of resource pools divided in the frequency domain according to an embodiment of the present invention.
  • a discovery channel may be transmitted on one PRB per time slot. That is, one PRB pair per subframe is used for the transmission with a shorter length of the discovery message; in the second type of resource pool, the discovery channel can be transmitted on two PRBs per slot, that is, two PRB pairs per subframe, Used to send medium length discovery messages; in the third type of resource pool, the discovery channel can be transmitted on three PRBs per time slot, that is, three PRB pairs per subframe.
  • the PRBs in each set of resources may not always be consecutive. That is, in each type of resource pool, the PRBs used to transmit the edge link discovery signals may not be all consecutive in the frequency domain.
  • FIG. 8 is another schematic diagram of an embodiment of the present invention, showing multiple types of resource pools that are partitioned in the frequency domain, and each type of resource pool may have multiple resource pools with different frequency domains in different locations.
  • the base station allocates a first type resource pool of two different locations, a second type resource pool of two different locations, and a third type resource pool.
  • the base station may allocate multiple resource pools of the same type to the user equipment as needed, or allocate multiple resource pools of different types.
  • the resource pool may be divided into multiple types in the time domain, that is, the base station may also configure multiple resource pools separated by time domains.
  • the subframe set may be a continuous subframe, or may be an interval subframe, where resources in the subframe set allocate resources according to a fixed number of PRBs; in another subframe set The number of PRBs occupied by the discovery channel in the resource pool is different from that of the first type of resource pool.
  • FIG. 9 is a schematic diagram of multiple types of resource pools divided in the time domain according to an embodiment of the present invention. As shown in FIG. 9, as shown in FIG. 9, only the first type of resources are included in the first and second subframes. Pool, if the UE uses the radio resource of the resource pool to send the discovery signal, only one PRB pair is selected; in the third and fourth subframes, only the first In the second type of resource pool, the UE selects two PRB pairs; in the fifth and sixth subframes, there is only a third type of resource pool, and the UE selects three PRB pairs.
  • the PRBs for transmitting the edge link discovery signals may not be all consecutive in the time domain.
  • FIG. 10 is another schematic diagram of an embodiment of the present invention showing multiple types of resource pools that are partitioned in the time domain, and each type of resource pool may have multiple resource pools at different locations in the time domain.
  • the base station allocates two first type resource pools in different time domain locations, two second type resource pools in different time domain locations, and a third type resource pool.
  • the base station may allocate multiple resource pools of the same type to the user equipment as needed, or allocate multiple resource pools of different types.
  • the frequency domain division and the time domain division may also be combined to flexibly allocate each set of resource pools in the time domain and the frequency domain two-dimensional space.
  • the foregoing describes the resource pool division.
  • the following describes how the base station sends resource pool information.
  • the base station may send multiple types of resource pool information to the user equipment, and the user equipment itself determines the resource pool type used and the specific resource.
  • FIG. 11 is another schematic diagram of a method for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 11, the transmission method includes:
  • Step 1101 The base station configures a resource pool used for edge link discovery.
  • Step 1102 The base station sends multiple types of resource pool information to the user equipment.
  • the base station may allocate multiple types of resource pools according to certain rules (for example, the number of users who need to send discovery signals, radio resource usage, etc.), and each type of resource pool may have one or more resource pools, belonging to the same type. Multiple resource pools in a resource pool have the same resource allocation granularity.
  • the base station may send multiple types of resource pool information to the user equipment by using broadcast signaling.
  • the resource pool information may include the location and size of the time-frequency resource occupied by the resource pool, the type of the resource pool, or the resource selection method (for example, according to a PRB. , two PRBs or three PRBs, etc. select resources).
  • Step 1103 The user equipment determines the type of the corresponding resource pool according to the edge link discovery signal that needs to be sent.
  • the type of resource pool used may be determined according to the size of the edge link discovery signal. For example, if the size of the edge link signal is relatively small, the first type of resource pool may be selected (one PRB pair in each subframe is used for transmitting the edge link discovery signal); if the size of the side link signal is medium, the channel may be selected. The second type of resource pool (two PRB pairs in each subframe are used to send the edge link discovery signal); if the size of the side link signal is relatively large, then it can be selected. Select a third type of resource pool (three PRB pairs in each subframe are used to send the edge link discovery signal); and so on.
  • Step 1104 The user equipment selects a sending resource from a resource pool of a corresponding type.
  • a specific sending resource may be selected from, for example, four resource pools of the first type of resource pool.
  • Step 1105 The user equipment sends the edge link discovery signal by using the sending resource.
  • the user equipment may send information (auxiliary information) of the edge link discovery signal to the base station in advance, and the base station determines the type of the resource pool according to the information, and sends the determined resource pool information of the type to the determined The user equipment determines the specific resources from the resource pool by the user equipment itself.
  • auxiliary information information of the edge link discovery signal
  • FIG. 12 is another schematic diagram of a method for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 12, the transmission method includes:
  • Step 1201 The base station configures a resource pool used for edge link discovery.
  • the base station may allocate multiple types of resource pools according to certain rules (for example, the number of users who need to send discovery signals, radio resource usage, etc.), and each type of resource pool may have one or more resource pools, belonging to the same type. Multiple resource pools in a resource pool have the same resource allocation granularity.
  • Step 1202 The user equipment sends information about the edge link discovery signal.
  • the user equipment may send the auxiliary information to the base station in advance, and the auxiliary information may include information related to the type of the edge link discovery signal, for example, may include at least the length information of the edge link discovery signal; or at least include the side link. Discover the type and number of signals.
  • Step 1203 The base station determines the type of the resource pool according to the information of the edge link discovery signal.
  • Step 1204 The base station sends the determined resource pool information of the type to the user equipment.
  • the base station may determine the type of the resource pool used by the user equipment according to the received information of the edge link discovery signal, and then notify the user equipment of the one or more resource pool information of the type by using dedicated signaling.
  • the resource pool information may include the size of the location of the resource pool, rules for resource usage in the resource pool (for example, how many PRBs or PRB pairs are used to occupy resources), and the like.
  • Step 1205 The user equipment selects a sending resource from the resource pool of the type.
  • Step 1206 The user equipment sends the edge link discovery signal by using the sending resource.
  • the resource pool may be configured. After obtaining the edge link discovery signal information, the resource pool suitable for the type of discovery signal may be configured, and the resource pool information is sent in step 1204.
  • multiple types of resource pools are configured, wherein the wireless resource users of each type of resource pool The method and granularity are different to adapt to the transmission of the signal found on different side links.
  • the base station determines whether to use the broadcast signaling to send multiple types of resource pools according to whether the type of the discovery message of the user equipment can be obtained, or whether the single type resource pool is notified by using dedicated signaling.
  • the user equipment determines a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • the embodiment of the invention provides a method for transmitting a discovery signal, which is applied to a base station.
  • a discovery signal which is applied to a base station.
  • the same contents as those of Embodiment 1 will not be described again.
  • FIG. 13 is a schematic diagram of a method for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 13, the transmission method includes:
  • Step 1301 The base station configures a resource pool, where the resource pool is divided in a frequency domain and/or a time domain to include multiple types.
  • Step 1302 The base station sends the information of the resource pool to the user equipment, so that the user equipment sends the edge link discovery signal by using the sending resource determined from the resource pool.
  • the resource pool is divided into multiple types in the frequency domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs used to transmit the edge link discovery signals may not be all consecutive in the frequency domain in each type of resource pool.
  • the resource pool is divided into multiple types in the time domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs for transmitting the edge link discovery signals may not be all consecutive in the time domain in each type of resource pool.
  • the base station sends multiple types of resource pool information to the user equipment, and the user equipment determines the resource pool type and the specific resource used by the user equipment.
  • the base station may send the multiple types of resource pool information by using a broadcast message; the same type of resource pool includes one or more.
  • the user equipment may send information about the edge link discovery signal (for example, the size of the discovery information; or the type and number of the discovery information) to the base station, and the base station determines the type of the resource pool according to the information. And sending the determined resource pool information of the type to the user equipment, and the user equipment itself from the class Identify specific resources in the resource pool.
  • the base station may send a certain type of resource pool information by using dedicated signaling; the certain type of resource pool includes one or more.
  • the user equipment determines a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • the embodiment of the invention provides a device for transmitting a discovery signal, which is configured in a user equipment.
  • the embodiment of the present invention corresponds to the transmission method in Embodiment 1, and the same content is not described again.
  • FIG. 14 is a schematic diagram of a device for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 14, the transmission device 1400 includes:
  • the resource determining unit 1401 determines, according to the edge link discovery signal that needs to be sent, the sending resource from the resource pool, where the resource pool is divided in the frequency domain and/or the time domain to include multiple types;
  • the signal transmitting unit 1402 transmits the side link discovery signal using the transmission resource.
  • the resource pool is divided into multiple types in the frequency domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs used to transmit the edge link discovery signals may not be all consecutive in the frequency domain in each type of resource pool.
  • the resource pool is divided into multiple types in the time domain; wherein, in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs for transmitting the edge link discovery signals may not be all consecutive in the time domain in each type of resource pool.
  • the transmission apparatus 1500 includes: a resource determination unit 1401 and a signal transmission unit 1402, as described above.
  • the transmission device 1500 may further include:
  • the resource receiving unit 1501 receives information about the resource pool sent by the base station.
  • the information about the resource pool received by the resource receiving unit 1501 includes information of multiple types of resource pools; each type of resource pool includes one or more; and the resource determining unit 1401 further uses Determining a type of the corresponding resource pool according to the edge link discovery signal, and determining the sending resource from a resource pool of a corresponding type.
  • the information about the resource pool received by the resource receiving unit 1501 includes a certain Information about a type of resource pool; the one type of resource pool includes one or more.
  • the resource determining unit 1401 is further configured to determine the sending resource from the certain type of resource pool according to the edge link discovery signal.
  • the transmission apparatus 1600 includes a resource determination unit 1401, a signal transmission unit 1402, and a resource reception unit 1501, as described above.
  • the transmission device 1600 may further include:
  • the information sending unit 1601 sends the information of the edge link discovery signal to the base station, so that the base station determines the type of the resource pool configured for the user equipment according to the information.
  • the embodiment of the invention further provides a user equipment, which is provided with the above-mentioned discovery signal transmission device 1400, 1500 or 1600.
  • FIG. 17 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 1700 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the transmission device 1400, 1500 or 1600 of the discovery signal may be integrated into the central processor 100.
  • the central processing unit 100 may be configured to perform control of determining a transmission resource from a resource pool according to an edge link discovery signal that needs to be sent, and transmitting the edge link discovery signal by using the transmission resource;
  • the resource pool is divided in the frequency domain and/or the time domain to include multiple types.
  • the transmission device 1400, 1500 or 1600 of the discovery signal may be configured separately from the central processing unit 100, for example, the transmission device 1400, 1500 or 1600 of the discovery signal may be configured as a chip connected to the central processing unit 100.
  • the transmission means 1400, 1500 or 1600 for discovering signals is realized by the control of the central processing unit.
  • the user equipment 1700 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a memory 140, a camera 150, a display 160, and a power source 170.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1700 does not have to include all the components shown in FIG. 17, and the above components are not required; in addition, the user equipment 1700 may further include components not shown in FIG. There are technologies.
  • the user equipment is divided into multiple types of resource pools in the frequency domain and/or the time domain. Determining a transmission resource and transmitting a side link discovery signal using the transmission resource. Thus, even if the information is found to be different in size depending on the scene, it is possible to minimize the waste of resources or the unloading.
  • the embodiment of the invention provides a transmission device for discovering signals, which is configured in a base station.
  • the embodiment of the present invention corresponds to the method for transmitting the discovery signal in Embodiment 2, and the same content is not described again.
  • FIG. 18 is a schematic diagram of a device for transmitting a discovery signal according to an embodiment of the present invention. As shown in FIG. 18, the transmission device 1800 includes:
  • the resource pool configuration unit 1801 configures a resource pool; wherein the resource pool is divided in the frequency domain and/or the time domain to include multiple types.
  • the resource sending unit 1802 sends the information of the resource pool to the user equipment, so that the user equipment sends the edge link discovery signal by using the transmission resource determined from the resource pool.
  • the resource pool is divided into multiple types in the frequency domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs used to transmit the edge link discovery signals may not be all consecutive in the frequency domain in each type of resource pool.
  • the resource pool is divided into multiple types in the time domain; in different types of resource pools, the number of PRBs for transmitting the edge link discovery signal is different.
  • the PRBs for transmitting the edge link discovery signals may not be all consecutive in the time domain in each type of resource pool.
  • the information of the resource pool includes information of multiple types of resource pools; the same type of resource pool includes one or more.
  • the information of the resource pool includes information of a certain type of resource pool; the certain type of resource pool includes one or more.
  • FIG. 19 is another schematic diagram of a discovery signal transmission apparatus according to an embodiment of the present invention.
  • the transmission apparatus 1900 includes a resource pool configuration unit 1801 and a resource transmission unit 1802, as described above.
  • the transmission device 1900 may further include:
  • the information receiving unit 1901 receives information about the edge link discovery signal sent by the user equipment
  • the type determining unit 1902 determines a type of the resource pool configured for the user equipment according to the information.
  • the embodiment of the invention further provides a base station, which is provided with the above-mentioned discovery signal transmission device 1800 or 1900.
  • FIG. 20 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • the base station 2000 can include A central processing unit (CPU) 200 and a memory 210 are coupled to the central processing unit 200.
  • the memory 210 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 200.
  • the base station 1200 can implement the transmission method of the discovery signal as described in Embodiment 1.
  • the central processor 200 can be configured to implement the functionality of the transmission device 1800 or 1900 that discovers signals; that is, the central processor 200 can be configured to perform the control of configuring a resource pool; wherein the resource pool is in the frequency domain and/or time The domain is divided to include multiple types; and the information of the resource pool is sent to the user equipment, so that the user equipment sends the edge link discovery signal using the transmission resource determined from the resource pool.
  • the base station 2000 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and are not described herein again. It should be noted that the base station 2000 does not necessarily have to include all the components shown in FIG. 20; in addition, the base station 2000 may further include components not shown in FIG. 20, and reference may be made to the prior art.
  • the user equipment determines a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • a transmission resource from a resource pool that is divided into multiple types in the frequency domain and/or the time domain, and transmits an edge link discovery signal by using the transmission resource.
  • FIG. 21 is a schematic diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 21, the communication system 2100 includes: a user equipment 2101.
  • the user equipment 2101 determines a transmission resource from the resource pool according to the edge link discovery signal that needs to be sent, and sends the edge link discovery signal by using the transmission resource, where the resource pool is in the frequency domain and/or time.
  • the domain is divided to include multiple types.
  • the communication system 2100 may further include:
  • the base station 2102 configures the resource pool; and sends information of multiple types or a certain type of resource pool to the user equipment.
  • the resource pool is divided into multiple types in the frequency domain and/or the time domain.
  • the number of PRBs used to transmit the edge link discovery signal is different in different types of resource pools.
  • An embodiment of the present invention provides a computer readable program, wherein when the program is executed in a user equipment, The program causes a computer to perform a transmission method of the discovery signal as described in Embodiment 1 in the user equipment.
  • An embodiment of the present invention provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute a transmission method of the discovery signal as described in Embodiment 1 in a user equipment.
  • An embodiment of the present invention provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to execute a transmission method of the discovery signal as described in Embodiment 2 in the base station.
  • An embodiment of the present invention provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute a transmission method of a discovery signal as described in Embodiment 2 in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware or 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.
  • 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.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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Abstract

一种发现信号的传输方法、装置以及通信***。所述发现信号的传输方法包括：用户设备根据需要发送的边链路发现信号从资源池中确定发送资源，以及使用所述发送资源发送所述边链路发现信号；其中，所述资源池在频域和/或时域上被分割而包括多个类型。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。

Description

发现信号的传输方法、装置以及通信*** 技术领域
本发明实施例涉及通信技术领域，特别涉及一种边链路(Sidelink)发现信号的传输方法、装置以及通信***。
背景技术
近年来，无线通信技术得到了高速发展，3GPP标准化已经发展到Rel.13，关键技术涵盖了小小区(small cell)的广泛配置、载波聚合(CA，carrier aggregation)、3D多天线技术(例如MIMO，Multiple Input Multiple Output)、非授权频段的LTE化(例如Licensed-Assisted-Access)等。
另外，由于一些国家(例如美国)对公共安全(public safety)越来越重视，考虑到基于LTE技术的无线蜂窝网络已经在全球得到了大量应用，因此也希望基于该网络能够提供对公共安全这种特殊业务的支持。在具体形式上，公共安全业务要求网络能提供一定程度的边链路发现(discovery)和通信(communication)。边链路发现和通信也可以称为设备到设备(D2D，Device to Device)发现和通信。
边链路通信方式是指数据包无需通过核心网和基站，用户设备例如UE1和UE2之间可以直接建立通信链路而进行通信。在进行边链路通信前，一般会进行边链路发现过程。例如，UE1要通过边链路通信方式发送信息给UE2之前，先要发现UE2是否在附近。
图1是蜂窝网覆盖下的边链路通信的一示意图。如图1所示，目前3GPP标准化研究中讨论最多是两个UE处于基站(例如eNB)的覆盖范围的情况，两个UE之间通过基站的辅助，可以使用该基站的无线资源来建立两者间的连接，由图1可见，由一端发送发现信号(discovery signal)，另一端来接收该发现信号，从而达到发现对方的目的；发现对方后就可以进行彼此间的数据传输。
在现有标准中，针对图1的边链路发现，一端UE发送的发现消息(Discovery Message)为固定尺寸，为232比特。为此，对应的物理层边链路发现信道(PSDCH，Physical Sidelink Dicovery Channel)占用的物理资源块对(PRB pair，Physical Resource Block pair)也的数目也被固定，为每一时隙(slot)占用2个PRB，即每一子帧占用 两个PRB对。
现在标准中定义了PSDCH的资源池，该资源池是在LTE无线资源中的一段时频资源。图2是现有PSDCH的资源池分配的一示意图，如图2所示，其中灰色区域内的资源块(RB，Resource Block)为用于PSDCH的资源池，该区域通过例如高层信令或者介质访问控制(MAC，Media Access Control)层信令通知给用户设备。每个用户设备在选择自己的PSDCH时，以频域连续占用2个PRB，时域占据两个时隙(slot)为一个选择单元，不同用户设备间可以在这个资源池里竞争选择自己的PSDCH资源。
如图2所示，阴影区域内的4个PRB为一个用户设备占用，另一阴影区域内的4个PRB为另一个用户设备占用。并且为了进一步降低发送冲突，标准中定义了最多可以配置4个资源池。但是，用户设备在任何一个资源池中选择PSDCH资源时，仍然按照每slot占用2个PRB的方式发送。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：发现信息可能因为场景的不同而大小会有所差异，例如可能比232比特大，也可能比232比特小。如果新的发现信息小于232比特而依然选择两个PRB对承载的话，会造成资源浪费；如果新的发现信息大于232比特，两个PRB对可能无法承载该发现信息。
本发明实施例提供一种发现信号的传输方法、装置以及通信***。即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
根据本发明实施例的第一个方面，提供一种发现信号的传输方法，应用于用户设备，所述传输方法包括：
根据需要发送的边链路发现信号从资源池中确定发送资源；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
使用所述发送资源发送所述边链路发现信号。
根据本发明实施例的第二个方面，提供一种发现信号的传输装置，配置于用户设备中，所述传输装置包括：
资源确定单元，根据需要发送的边链路发现信号从资源池中确定发送资源；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
信号发送单元，使用所述发送资源发送所述边链路发现信号。
根据本发明实施例的第三个方面，提供一种发现信号的传输方法，应用于基站，所述传输方法包括：
配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
根据本发明实施例的第四个方面，提供一种发现信号的传输装置，配置于基站中，所述传输装置包括：
资源池配置单元，配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
资源发送单元，向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
根据本发明实施例的第五个方面，提供一种通信***，所述通信***包括：
用户设备，根据需要发送的边链路发现信号从资源池中确定发送资源，以及使用所述发送资源发送所述边链路发现信号；其中，所述资源池在频域和/或时域上被分割而包括多个类型。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得计算机在所述用户设备中执行如上所述的发现信号的传输方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在用户设备中执行如上所述的发现信号的传输方法。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行如上所述的发现信号的传输方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行如上所述的发现信号的传输方法。
本发明实施例的有益效果在于：用户设备从在频域和/或时域上被分割为多个类型的资源池中确定发送资源，并使用所述发送资源发送边链路发现信号。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘制的，而只是为了示出本发明的原理。为了便于示出和描述本发明的一些部分，附图中对应部分可能被放大或缩小。
在本发明的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是蜂窝网覆盖下的边链路通信的一示意图；
图2是现有PSDCH的资源池分配的一示意图；
图3是本发明实施例的UE到网络中继发现的一示意图；
图4是本发明实施例的UE组成员之间发现的一示意图；
图5是本发明实施例的UE到UE中继发现的一示意图；
图6是本发明实施例1的发现信号的传输方法的一示意图；
图7是本发明实施例1的在频域上被分割的多个类型资源池的一示意图；
图8是本发明实施例1的在频域上被分割的多个类型资源池的另一示意图；
图9是本发明实施例1的在时域上被分割的多个类型资源池的一示意图；
图10是本发明实施例1的在时域上被分割的多个类型资源池的另一示意图；
图11是本发明实施例1的发现信号的传输方法的另一示意图；
图12是本发明实施例1的发现信号的传输方法的另一示意图；
图13是本发明实施例2的发现信号的传输方法的一示意图；
图14是本发明实施例3的发现信号的传输装置的一示意图；
图15是本发明实施例3的发现信号的传输装置的另一示意图；
图16是本发明实施例3的发现信号的传输装置的另一示意图；
图17是本发明实施例3的用户设备的一示意图；
图18是本发明实施例4的发现信号的传输装置的一示意图；
图19是本发明实施例4的发现信号的传输装置的另一示意图；
图20是本发明实施例4的基站的一示意图；
图21是本发明实施例5的通信***的一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
随着标准化的不断进展和公共安全业务的发展，更多的应用场景需要提供边链路业务。尤其是关于UE间的边链路发现功能，需要提供更加灵活的机制。
例如，一种情况是如果边链路的一端UE没有网络覆盖，希望处于网络覆盖范围的另一端UE能提供中继(Relay)功能。图3是本发明实施例的UE到网络中继发现的一示意图，如图3所示，UE1处于基站(例如eNB)的覆盖范围，而UE2，UE3处于该eNB的覆盖范围之外，对于这两个用户设备来说，如果他们希望与eNB进行通信，就必须通过UE1进行中继(Relay)，为实现这种Relay功能，就需要UE1和UE2/3间具有Relay连接建立的功能。
再例如，另一种情况是如果边链路的UE均没有网络覆盖，希望UE组成员之间建立联系。图4是本发明实施例的UE组成员之间发现的一示意图，如图4所示，UE1也处于网络覆盖之外，如果UE1希望给周围的UE发送消息(例如广播消息)，由于UE2，3也处于网络覆盖之外，需要UE1和UE2/3间具有发现的功能。
再例如，另一种情况是如果边链路的UE均没有网络覆盖，希望通过另一UE进行中继而建立联系。图5是本发明实施例的UE到UE中继发现的一示意图，如图5所示，如果UE2和UE3希望通过UE1与UE0建立联系，则UE0、UE1、UE2/3之间就需要有发现功能，并且该发现功能的要求与前两种发现功能的要求也会不同。
如果考虑边链路的功能扩展需求，需要提供至少三种发现消息的发送，分别对应图3所示的UE-to-Network中继发现、图4所示的Group Member发现以及图5所示的UE-to-UE中继发现，每种发现消息的长度不再是原来标准中规定的232比特。即，现在的发现信息可能因为场景的不同而大小会有所差异。
因此如果新的三种发现消息的长度超过232比特，就需要压缩信息以便放入原来的为232比特设计的PSDCH信道中；如果太长，有可能即使压缩也会出现无法放入PSDCH中的问题；另外，如果新的发现消息的长度小于232比特，如果放入原来的PSDCH信道中的话，就会导致无线资源浪费的问题。
因此为了适应新的边链路发现消息，需要增强PSDCH或者使用新的PSDCH资源池。以下对本发明实施例进行详细说明。
实施例1
本发明实施例提供一种发现信号的传输方法，应用于用户设备中。图6是本发明实施例的发现信号的传输方法的一示意图，如图6所示，所述传输方法包括：
步骤601，用户设备根据需要发送的边链路发现信号从资源池中确定发送资源；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
步骤602，用户设备使用所述发送资源发送所述边链路发现信号。
在本实施例中，所述资源池在频域上和/或时域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。例如，有的资源池是以一个PRB来承载发现信号，有的资源池是以两个PRB来承载发现信号，有的是以三个PRB来承载发现信号，等等。
其中，该资源池可以由基站配置后发送给用户设备。用户设备可以在处于连接(connected)态且需要进行边链路发现时，根据边链路发现信号的大小从所述资源池中确定发送资源，进行边链路发现过程；这种情况下的UE例如可以是如图3所示场景中的UE1。
此外，用户设备也可以存储该资源池的信息，在处于空闲(idle)态且需要进行边链路发现时，根据边链路发现信号的大小从所述资源池中确定发送资源，进行边链路发现过程；这种情况下的UE例如可以是如图4或5所示场景中的UE1。
由此，用户设备可以根据发送信息的大小，灵活地从不同类型的资源池中选择合适的用于边链路发现的资源，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
在一个实施方式中，资源池可以在频域上被划分为多个类型。即基站配置多套发送发现消息的传输信道无线资源池，每一套对应一种消息发送格式，多套资源池可以按照频率域分隔开。
图7是本发明实施例的在频域上被分割的多个类型资源池的一示意图，如图7所示，在第一类资源池中，发现信道可以在每时隙一个PRB上传输，即每子帧一个PRB对，用于对应发现消息长度较短的发送；在第二类资源池中，发现信道可以在每个时隙两个PRB上传输，即每个子帧两个PRB对，用来发送中等长度的发现消息；在第三类资源池中，发现信道可以在每个时隙三个PRB上传输，即每个子帧三个PRB对。
在本实施方式中，从频域来看，每套资源中PRB可以不是总是连续的。即每种类型的资源池中，用于传输所述边链路发现信号的PRB在频域上可以不是全部连续的。
图8是本发明实施例的另一示意图，示出了在频域上被分割的多个类型资源池，并且每类资源池可以有多个频域处于不同位置的资源池。如图8所示，基站分配了两个不同位置的第一类资源池，两个不同位置的第二类资源池，以及一个第三类资源池。基站可以根据需要为用户设备分配多个同一类型的资源池，或者分配多个不同类型的资源池。
在另一个实施方式中，资源池可以在时域上被分割为多个类型，即基站也可以配置按照时间域隔开的多套资源池。例如，在一个子帧集合内，该子帧集合可以是连续的子帧，也可以是间隔的子帧，该子帧集合内资源按照固定个数的PRB分配资源；在另一个子帧集合内，资源池内的发现信道占用的PRB个数不同于第一类资源池。
图9是本发明实施例的在时域上被分割的多个类型资源池的一示意图，如图9所示，如图9所示，在第一和第二个子帧内只有第一类资源池，如果UE使用该类资源池的无线资源发送发现信号，则只选择一个PRB对；在第三和第四个子帧内只有第 二类资源池，UE选择两个PRB对；在第五和第六个子帧内只有第三类资源池，UE选择三个PRB对。
在本实施方式中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在时域上也可以不是全部连续的。
图10是本发明实施例的另一示意图，示出了在时域上被分割的多个类型资源池，并且每类资源池可以有多个处于时域的不同位置的资源池。如图10所示，基站分配了两个处于不同时域位置的第一类资源池，两个处于不同时域位置的第二类资源池，以及一个第三类资源池。基站可以根据需要为用户设备分配多个同一类型的资源池，或者分配多个不同类型的资源池。
在另一个实施方式中，还可以将频域划分和时域划分结合起来，灵活地在时域和频域二维空间分配各套资源池。
以上对于资源池划分进行了说明，以下对于基站如何发送资源池信息进行说明。
在一个实施方式中，基站可以将多个类型的资源池信息发送给用户设备，由用户设备自己确定所使用的资源池类型以及具体的资源。
图11是本发明实施例的发现信号的传输方法的另一示意图，如图11所示，所述传输方法包括：
步骤1101，基站对用于边链路发现的资源池进行配置。
步骤1102，基站将多个类型的资源池信息发送给用户设备。
其中，基站可以按照一定规则(例如：需要发送发现信号的用户数，无线资源使用情况等等)，分配多个类型的资源池，每类资源池可以有一个或者多个资源池，属于同一类型资源池的多个资源池就有相同的资源分配粒度。
基站可以通过广播信令将多个类型的资源池信息发送给用户设备，资源池信息可以包括资源池所占的时频资源位置和大小、资源池的类型或资源选择方法(例如：按照一个PRB、两个PRB或者三个PRB等选择资源)等。
步骤1103，用户设备根据需要发送的边链路发现信号确定相应的资源池的类型。
其中，可以根据边链路发现信号的大小确定使用哪类资源池。例如，如果边链路信号的大小比较小，则可以选择第一类资源池(每个子帧中一个PRB对用于发送边链路发现信号)；如果边链路信号的大小中等，则可以选择第二类资源池(每个子帧中两个PRB对用于发送边链路发现信号)；如果边链路信号的大小比较大，则可以选 择第三类资源池(每个子帧中三个PRB对用于发送边链路发现信号)；等等。
步骤1104，用户设备从相应类型的资源池中选择发送资源。
例如，如果步骤1103中选择第一类资源池，则可以从第一类资源池的例如4个资源池中选择出具体的发送资源。
步骤1105，用户设备使用所述发送资源发送所述边链路发现信号。
在另一个实施方式中，用户设备可以预先将边链路发现信号的信息(辅助信息)发送给基站，由基站根据该信息确定资源池的类型，并将确定的该类型的资源池信息发送给用户设备，由用户设备自己从该类资源池中确定具体的资源。
图12是本发明实施例的发现信号的传输方法的另一示意图，如图12所示，所述传输方法包括：
步骤1201，基站对用于边链路发现的资源池进行配置。
其中，基站可以按照一定规则(例如：需要发送发现信号的用户数，无线资源使用情况等等)，分配多个类型的资源池，每类资源池可以有一个或者多个资源池，属于同一类型资源池的多个资源池就有相同的资源分配粒度。
步骤1202，用户设备发送边链路发现信号的信息。
其中，用户设备可以提前发送辅助信息给基站，该辅助信息可以包括与边链路发现信号的类型相关的信息，例如可以至少包括该边链路发现信号的长度信息；或者至少包括该边链路发现信号的类型和个数。
步骤1203，基站根据该边链路发现信号的信息确定资源池的类型。
步骤1204，基站将确定的该类型的资源池信息发送给用户设备。
其中，基站根据收到的边链路发现信号的信息，可以决定该用户设备采用的资源池的类型，然后通过专用信令将该类型的一个或多个资源池信息通知给用户设备。资源池信息可以包含资源池的位置的大小、资源池中资源使用的规则(例如按多少个PRB或PRB pair来占用资源)等。
步骤1205，用户设备从该类型的资源池中选择发送资源。
步骤1206，用户设备使用所述发送资源发送所述边链路发现信号。
需要注意的是步骤1201配置资源池也可以在步骤1202之后，在获得边链路发现信号信息后再配置适合该类发现信号的资源池，并在步骤1204发送该资源池信息。
在本实施例中，通过配置多个类型的资源池，其中每类资源池的无线资源使用方 法和粒度不同，来适应不同边链路发现信号的传输。此外，基站根据是否能获得用户设备的发现消息的类型等，来决定是采用广播信令发送多类资源池，还是采用专用信令通知单类资源池。通过设计多类不同类型的资源池，可以灵活适应多种边链路应用的发现消息的传输。
由上述实施例可知，用户设备从在频域和/或时域上被分割为多个类型的资源池中确定发送资源，并使用所述发送资源发送边链路发现信号。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
实施例2
本发明实施例提供一种发现信号的传输方法，应用于基站中。与实施例1相同的内容不再赘述。
图13是本发明实施例的发现信号的传输方法的一示意图，如图13所示，所述传输方法包括：
步骤1301，基站配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
步骤1302，基站向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
在一个实施方式中，所述资源池在频域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在频域上可以不是全部连续的。
在另一个实施方式中，所述资源池在时域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在时域上可以不是全部连续的。
在一个实施方式中，基站将多个类型的资源池信息发送给用户设备，由用户设备自己确定所使用的资源池类型以及具体的资源。其中，基站可以使用广播消息发送所述多个类型的资源池信息；同一类型的资源池包括一个或多个。
在另一个实施方式中，用户设备可以预先将边链路发现信号的信息(例如发现信息的大小；或者发现信息的类型和个数等)发送给基站，由基站根据该信息确定资源池的类型，并将确定的该类型的资源池信息发送给用户设备，由用户设备自己从该类 资源池中确定具体的资源。其中，基站可以使用专用信令发送某一类型的资源池信息；所述某一类型的资源池包括一个或多个。
由上述实施例可知，用户设备从在频域和/或时域上被分割为多个类型的资源池中确定发送资源，并使用所述发送资源发送边链路发现信号。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
实施例3
本发明实施例提供一种发现信号的传输装置，配置于用户设备中。本发明实施例对应于实施例1中的传输方法，相同的内容不再赘述。
图14是本发明实施例的发现信号的传输装置的一示意图，如图14所示，所述传输装置1400包括：
资源确定单元1401，根据需要发送的边链路发现信号从资源池中确定发送资源；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
信号发送单元1402，使用所述发送资源发送所述边链路发现信号。
在一个实施方式中，所述资源池在频域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在频域上可以不是全部连续的。
在另一个实施方式中，所述资源池在时域上被分割为多个类型；其中，不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在时域上可以不是全部连续的。
图15是本发明实施例的发现信号的传输装置的另一示意图，如图15所示，所述传输装置1500包括：资源确定单元1401和信号发送单元1402，如上所述。
如图15所示，所述传输装置1500还可以包括：
资源接收单元1501，接收基站发送的所述资源池的信息。
在一个实施方式中，所述资源接收单元1501接收的所述资源池的信息包括多个类型的资源池的信息；每一类型的资源池包括一个或多个；所述资源确定单元1401还用于根据所述边链路发现信号确定相应的资源池的类型，并从相应类型的资源池中确定所述发送资源。
在另一个实施方式中，所述资源接收单元1501接收的所述资源池的信息包括某 一类型的资源池的信息；所述某一类型的资源池包括一个或多个。所述资源确定单元1401还用于根据所述边链路发现信号，从所述某一类型的资源池中确定所述发送资源。
图16是本发明实施例的发现信号的传输装置的另一示意图，如图16所示，所述传输装置1600包括：资源确定单元1401、信号发送单元1402和资源接收单元1501，如上所述。
如图16所示，所述传输装置1600还可以包括：
信息发送单元1601，将所述边链路发现信号的信息发送给所述基站，使得所述基站根据所述信息确定为所述用户设备配置的资源池的类型。
本发明实施例还提供一种用户设备，配置有上述的发现信号的传输装置1400、1500或1600。
图17是本发明实施例的用户设备的一示意图。如图17所示，该用户设备1700可以包括中央处理器100和存储器140；存储器140耦合到中央处理器100。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，发现信号的传输装置1400、1500或1600的功能可以被集成到中央处理器100中。其中，中央处理器100可以被配置为进行如下控制：根据需要发送的边链路发现信号从资源池中确定发送资源，以及使用所述发送资源发送所述边链路发现信号；其中，所述资源池在频域和/或时域上被分割而包括多个类型。
在另一个实施方式中，发现信号的传输装置1400、1500或1600可以与中央处理器100分开配置，例如可以将发现信号的传输装置1400、1500或1600配置为与中央处理器100连接的芯片，通过中央处理器的控制来实现发现信号的传输装置1400、1500或1600。
如图17所示，该用户设备1700还可以包括：通信模块110、输入单元120、音频处理单元130、存储器140、照相机150、显示器160、电源170。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，用户设备1700也并不是必须要包括图17中所示的所有部件，上述部件并不是必需的；此外，用户设备1700还可以包括图17中没有示出的部件，可以参考现有技术。
由上述实施例可知，用户设备从在频域和/或时域上被分割为多个类型的资源池 中确定发送资源，并使用所述发送资源发送边链路发现信号。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
实施例4
本发明实施例提供一种发现信号的传输装置，配置于基站中。本发明实施例对应于实施例2中的发现信号的传输方法，相同的内容不再赘述。
图18是本发明实施例的发现信号的传输装置的一示意图，如图18所示，所述传输装置1800包括：
资源池配置单元1801，配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型。
资源发送单元1802，向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
在一个实施方式中，所述资源池在频域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在频域上可以不是全部连续的。
在另一个实施方式中，所述资源池在时域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。其中，每种类型的资源池中，用于传输所述边链路发现信号的PRB在时域上可以不是全部连续的。
在一个实施方式中，所述资源池的信息包括多个类型的资源池的信息；同一类型的资源池包括一个或多个。
在另一个实施方式中，所述资源池的信息包括某一类型的资源池的信息；所述某一类型的资源池包括一个或多个。
图19是本发明实施例的发现信号的传输装置的另一示意图，如图19所示，所述传输装置1900包括：资源池配置单元1801和资源发送单元1802，如上所述。
如图19所示，所述传输装置1900还可以包括：
信息接收单元1901，接收用户设备发送的所述边链路发现信号的信息；
类型确定单元1902，根据所述信息确定为所述用户设备配置的资源池的类型。
本发明实施例还提供一种基站，配置有上述的发现信号的传输装置1800或1900。
图20是本发明实施例的基站的一构成示意图。如图20所示，基站2000可以包 括：中央处理器(CPU)200和存储器210；存储器210耦合到中央处理器200。其中该存储器210可存储各种数据；此外还存储信息处理的程序，并且在中央处理器200的控制下执行该程序。
其中，基站1200可以实现如实施例1所述的发现信号的传输方法。中央处理器200可以被配置为实现发现信号的传输装置1800或1900的功能；即中央处理器200可以被配置为进行如下控制：配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型；以及向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
此外，如图20所示，基站2000还可以包括：收发机220和天线230等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站2000也并不是必须要包括图20中所示的所有部件；此外，基站2000还可以包括图20中没有示出的部件，可以参考现有技术。
由上述实施例可知，用户设备从在频域和/或时域上被分割为多个类型的资源池中确定发送资源，并使用所述发送资源发送边链路发现信号。由此，即使发现信息因为场景的不同而大小不同，也能尽量减少资源浪费或无法承载的情况。
实施例5
本发明实施例还提供一种通信***，与实施例1至4相同的内容不再赘述。图21是本发明实施例的通信***的一示意图，如图21所示，所述通信***2100包括：用户设备2101。
其中，用户设备2101根据需要发送的边链路发现信号从资源池中确定发送资源，以及使用所述发送资源发送所述边链路发现信号；其中，所述资源池在频域和/或时域上被分割而包括多个类型。
如图21所示，所述通信***2100还可以包括：
基站2102，配置所述资源池；以及向用户设备发送多个类型或者某一类型的资源池的信息。
其中，所述资源池在频域和/或时域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的PRB的个数不同。
本发明实施例提供一种计算机可读程序，其中当在用户设备中执行所述程序时， 所述程序使得计算机在所述用户设备中执行如实施例1所述的发现信号的传输方法。
本发明实施例提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在用户设备中执行如实施例1所述的发现信号的传输方法。
本发明实施例提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行如实施例2所述的发现信号的传输方法。
本发明实施例提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行如实施例2所述的发现信号的传输方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (20)

  1. 一种发现信号的传输装置，配置于用户设备中，所述传输装置包括：
    资源确定单元，根据需要发送的边链路发现信号从资源池中确定发送资源；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
    信号发送单元，使用所述发送资源发送所述边链路发现信号。
  2. 根据权利要求1所述的传输装置，其中，所述资源池在频域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的物理资源块的个数不同。
  3. 根据权利要求2所述的传输装置，其中，每种类型的资源池中，用于传输所述边链路发现信号的物理资源块在频域上不是全部连续的。
  4. 根据权利要求1所述的传输装置，其中，所述资源池在时域上被分割为多个类型；其中，不同类型的资源池中，用于传输所述边链路发现信号的物理资源块的个数不同。
  5. 根据权利要求4所述的传输装置，其中，每种类型的资源池中，用于传输所述边链路发现信号的物理资源块在时域上不是全部连续的。
  6. 根据权利要求1所述的传输装置，其中，所述传输装置还包括：
    资源接收单元，接收基站发送的所述资源池的信息。
  7. 根据权利要求6所述的传输装置，其中，所述资源接收单元接收的所述资源池的信息包括多个类型的资源池的信息；每一类型的资源池包括一个或多个；
    所述资源确定单元还用于根据所述边链路发现信号确定相应的资源池的类型，并从相应类型的资源池中确定所述发送资源。
  8. 根据权利要求6所述的传输装置，其中，所述资源接收单元接收的所述资源池的信息包括某一类型的资源池的信息；所述某一类型的资源池包括一个或多个。
    所述资源确定单元还用于根据所述边链路发现信号，从所述某一类型的资源池中确定所述发送资源。
  9. 根据权利要求8所述的传输装置，其中，所述传输装置还包括：
    信息发送单元，将所述边链路发现信号的信息发送给所述基站，使得所述基站根据所述信息确定为所述用户设备配置的资源池的类型。
  10. 一种发现信号的传输装置，配置于基站中，所述传输装置包括：
    资源池配置单元，配置资源池；其中，所述资源池在频域和/或时域上被分割而包括多个类型；
    资源发送单元，向用户设备发送资源池的信息，使得所述用户设备使用从所述资源池中确定的发送资源发送边链路发现信号。
  11. 根据权利要求10所述的传输装置，其中，所述资源池在频域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的物理资源块的个数不同。
  12. 根据权利要求11所述的传输装置，其中，每种类型的资源池中，用于传输所述边链路发现信号的物理资源块在频域上不是全部连续的。
  13. 根据权利要求10所述的传输装置，其中，所述资源池在时域上被分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的物理资源块的个数不同。
  14. 根据权利要求13所述的传输装置，其中，每种类型的资源池中，用于传输所述边链路发现信号的物理资源块在时域上不是全部连续的。
  15. 根据权利要求10所述的传输装置，其中，所述资源池的信息包括多个类型的资源池的信息；同一类型的资源池包括一个或多个。
  16. 根据权利要求10所述的传输装置，其中，所述资源池的信息包括某一类型的资源池的信息；所述某一类型的资源池包括一个或多个。
  17. 根据权利要求16所述的传输装置，其中，所述传输装置还包括：
    信息接收单元，接收用户设备发送的所述边链路发现信号的信息；
    类型确定单元，根据所述信息确定为所述用户设备配置的资源池的类型。
  18. 一种通信***，所述通信***包括：
    用户设备，根据需要发送的边链路发现信号从资源池中确定发送资源，以及使用所述发送资源发送所述边链路发现信号；其中，所述资源池在频域和/或时域上被分割而包括多个类型。
  19. 根据权利要求18所述的通信***，其中，所述通信***还包括：
    基站，配置所述资源池；以及向所述用户设备发送多个类型或者某一类型的资源池的信息。
  20. 根据权利要求18所述的通信***，其中，所述资源池在频域和/或时域上被 分割为多个类型；不同类型的资源池中，用于传输所述边链路发现信号的物理资源块的个数不同。
PCT/CN2015/076280 2015-04-10 2015-04-10 发现信号的传输方法、装置以及通信*** WO2016161623A1 (zh)

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