CN107005914A - A kind of physics skidding finds channel PSDCH sending methods and device - Google Patents
A kind of physics skidding finds channel PSDCH sending methods and device Download PDFInfo
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- CN107005914A CN107005914A CN201580065500.6A CN201580065500A CN107005914A CN 107005914 A CN107005914 A CN 107005914A CN 201580065500 A CN201580065500 A CN 201580065500A CN 107005914 A CN107005914 A CN 107005914A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
Abstract
The present invention discloses a kind of physics skidding and finds channel PSDCH sending methods and device, and this method includes：First user equipment is communicated with second user equipment by device-to-device D2D modes, when first user equipment is sent to the second user equipment finds message, generates type information corresponding with the type of the discovery message；The discovery message and the type information are sent to the second user equipment so that the second user equipment determines the type of the discovery message based on the type information.The method and apparatus that the present invention is provided, which can be reduced, receives time delay and complexity that side apparatus processing finds message.
Description
Channel PSDCH sending methods and device are found the present invention relates to communication technical field, more particularly to a kind of physics skidding.
Device-to-device (device-to-device, D2D) it is a kind of technology of end-to-end direct communication, it is with traditional cellular telecommunication art difference, communication between terminal and terminal can not directly be communicated by the transfer of base station, base station can carry out directly being communicated between configuration, scheduling, coordination of resource etc., auxiliary terminal.
Third generation cooperative partner program business and system aspects (third generation partnership project services and system aspect, 3GPP SA1) in the application scenarios of the device-to-device (Long Term Evolution-device-to-device, LTE-D2D) of Long Term Evolution divide into 2 major classes：Public safety and business application.Public safety refers to occur earthquake or emergency, if cellular network cisco unity malfunction, also allows terminal room talk-around communication.
D2D terminal is supported to be provided simultaneously with the ability for receiving and launching in upstream band, but receiving and launching to occur simultaneously, be semiduplex mode.
D2D technologies are discussed in 3 gpp, the D2D technologies in Long Term Evolution version 12 (Long Term Evolution, LTE Rel.12) are that the transmission of data is carried out in the form of broadcast, include two characteristics：Device-to-device finds message (D2D discovery) and device-to-device signal of communication (D2D communication).D2D Discovery are the broadcast messages of terminal periodic, so that the user around him can detect the INFORMATION DISCOVERY user.
(device-to-device Work Item Description are described in LTE Rel13 device-to-device working stage, D2D WID) in propose research Discovery enhancing, i.e., subnetwork cover and scene without the network coverage under support public safety D2D discovery.The D2D discovery of public safety support following two application example again：
Terminal to network relaying finds (UE-to-network relay discovery)：Terminal without the network coverage can pass through terminal to network relay connection to network so that the terminal without the network coverage can carry out conventional network service, expand the actual coverage of existing network；
Group membership has found (Group Member discovery)：Target is to find target terminal to carry out one-to-one (1 by D2D discovery:Or one-to-many (1 1)：X D2D communications)；
In addition, the D2D discovery of public safety typically have two kinds of discovery patterns：
Mode A (Model A)：Utilize a discovery protocol message (the notification mode) (content in correspondence 3GPP TR23.713 agreements：In this model the announcing UE broadcasts discovery messages at pre-defined discovery intervals and the monitoring UEs that are interested in these messages read them and process them)
Mode B (Model B)：Utilize two discovery protocol messages (request and the response modes) (content in correspondence 3GPP TR23.713 agreements：Discoverer UE:The UE transmits a request containing certain information about what it is interested to discover.Discoveree UE:The UE that receives the request message can respond with some information related to the discoverer's request.)
In view of Discovery enhancing, find that the equipment (receiving side apparatus) of message needs to carry out corresponding processing for the different type for finding message so receiving, but need to distinguish different types of discovery message (various functions for finding message) using high level in the prior art.So as to will result in problems with：Need to be demodulated all discovery message received in physical layer, then it is submitted to high level, by high level decision which be receive side apparatus need which be unwanted, even if so as to cause it is much that high-rise uninterested discovery message is also required to be demodulated in physical layer, the problem of there is waste power.
The content of the invention
The present invention provides a kind of physics skidding and finds channel PSDCH sending methods and device, and method and apparatus provided by the present invention solve parsing in the prior art and find the problem of mode of message wastes power.
First aspect finds channel PSDCH sending methods there is provided a kind of physics skidding, and the first user equipment is communicated with second user equipment by device-to-device D2D modes, and this method includes：
First user equipment generation type information corresponding with the type of discovery message；
First user equipment sends the discovery message and the type information to the second user equipment, wherein, the type information is used for the type for indicating that the second user equipment determines the discovery message based on the type information.
With reference in a first aspect, in the first possible implementation, the type for finding message includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
With reference to first aspect or first aspect the first possible implementation, in second of possible implementation, the type information is indicated by the scrambler of the discovery message, then generation type information corresponding with the type for finding message includes：
The setting cell ID cell ID and/or customer equipment identification RNTI corresponding with the type of the discovery message when scrambling code generator is initialized；
The generation corresponding scrambler of type for finding message.
With reference to first aspect or first aspect the first possible implementation, in the third possible implementation, the type information is indicated by demodulated reference signal DMRS, then generation type information corresponding with the type for finding message includes：
Set one or more combinations in cell ID Cell ID corresponding with the type of the discovery message, cyclic shift CS and superposition orthogonal code OCC；
Generate demodulated reference signal corresponding with the type of the discovery message.
With reference to first aspect or first aspect the first possible implementation, in the 4th kind of possible implementation, the type information is indicated by mask, then generation type information corresponding with the type for finding message includes：
In the superior masks corresponding with the type of CRC CRC of the discovery message.
Second aspect finds channel PSDCH method of reseptances there is provided a kind of physics skidding, and the first user equipment is communicated with second user equipment by device-to-device D2D modes, and this method includes：
The second user equipment receives discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；
Second user equipment determines the type of the discovery message based on the type information.
With reference to second aspect, in the first possible implementation, the type for finding message includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
With reference to second aspect or second aspect the first possible implementation, in second of possible implementation, the type information is indicated by the scrambler of the discovery message, then the type for determining the discovery message based on the type information includes：
To the discovery message descrambling, scrambler corresponding with the discovery message is obtained；
Cell ID cell ID and/or customer equipment identification RNTI in the scrambler determine the type of the discovery message.
With reference to second aspect or second aspect the first possible implementation, in the third possible implementation, the type information is indicated by demodulated reference signal DMRS, then it is described to determine that the type of the discovery message includes based on the type information：
Obtain demodulated reference signal corresponding with the discovery message；
The type for finding message is determined based on one or more combinations in cell ID Cell ID, the cyclic shift CS in the demodulated reference signal and superposition orthogonal code OCC.
With reference to second aspect or second aspect the first possible implementation, in the 4th kind of possible implementation, the type information is indicated by mask, then described to determine that the type of the discovery message includes based on the type information：
Obtain CRC CRC corresponding with the discovery message；
The corresponding masks of CRC CRC based on the discovery message determine the type of the discovery message.
The third aspect finds channel PSDCH dispensing devices there is provided a kind of physics skidding, and the device is communicated with second user equipment by device-to-device D2D modes, and the device includes：
Generation unit, the corresponding type information of type for generating with finding message；
Transmitting element, for sending the discovery message and the type information to the second user equipment, wherein, the type information is used to indicate that the second user equipment is based on described in type information determination
It was found that the type of message.
With reference to the third aspect, in the first possible implementation, the type for the discovery message that the transmitting element is sent includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
With reference to the third aspect or the third aspect the first possible implementation, in second of possible implementation, the type information is indicated by the scrambler of the discovery message, then the generation unit is specifically for the setting cell ID cell ID and/or customer equipment identification RNTI corresponding with the type of the discovery message when scrambling code generator is initialized；Control the scrambling code generator generation corresponding scrambler of type for finding message.
With reference to the third aspect or the third aspect the first possible implementation, in the third possible implementation, the type information is indicated by demodulated reference signal DMRS, then the generation unit is specifically for setting one or more combinations in cell ID Cell ID corresponding with the type of the discovery message, cyclic shift CS and superposition orthogonal code OCC；Generate demodulated reference signal corresponding with the type of the discovery message.
With reference to the third aspect or the third aspect the first possible implementation, in the 4th kind of possible implementation, the type information is indicated by mask, then the generation unit is specifically for the superior masks corresponding with the type of CRC CRC in the discovery message.
Fourth aspect finds channel PSDCH reception devices there is provided a kind of physics skidding, and the device is communicated with second user equipment by device-to-device D2D modes, and the device includes：
Receiving unit, for receiving discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；
Type determining units, the type for determining the discovery message based on the type information.
With reference to fourth aspect, in the first possible implementation, the type determining units according to the type information specifically for determining that the type of the discovery message is user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
With reference to fourth aspect or fourth aspect the first possible implementation, in second of possible implementation, the type information is indicated by the scrambler of the discovery message, then the type determining units
Specifically for the discovery message descrambling, obtaining scrambler corresponding with the discovery message；Cell ID cell ID and/or customer equipment identification RNTI in the scrambler determine the type of the discovery message.
With reference to fourth aspect or fourth aspect the first possible implementation, in the third possible implementation, the type information is indicated by demodulated reference signal DMRS, then the type determining units are specifically for obtaining demodulated reference signal corresponding with the discovery message；The type for finding message is determined based on one or more combinations in cell ID Cell ID, the cyclic shift CS in the demodulated reference signal and superposition orthogonal code OCC.
With reference to fourth aspect or fourth aspect the first possible implementation, in the 4th kind of possible implementation, the type information indicates that then the type determining units are specifically for obtaining CRC CRC corresponding with the discovery message by mask；The corresponding masks of CRC CRC based on the discovery message determine the type of the discovery message.
One or two in above-mentioned technical proposal, at least has the following technical effect that：
The method and apparatus that the present invention is provided just incidentally send the configured information for the type that can indicate to find message when sending and finding message, so that receive side apparatus just can distinguish different types of discovery message in physical layer according to configured information, then receiving side apparatus can be demodulated with the discovery message only to needs, so as to reduce the power consumption for receiving side apparatus, power is saved, and the complexity for receiving side apparatus processing discovery message can be reduced.
Fig. 1 is the schematic flow sheet that a kind of physics skidding that the embodiment of the present invention one is provided finds channel PSDCH sending methods；
Fig. 2 is the schematic flow sheet that a kind of physics skidding that the embodiment of the present invention six is provided finds channel PSDCH method of reseptances；
Fig. 3 is the structural representation that a kind of physics skidding that the embodiment of the present invention 11 is provided finds channel PSDCH dispensing devices；
Fig. 4 is the structural representation that a kind of physics skidding that the embodiment of the present invention 12 is provided finds channel PSDCH reception devices；
Fig. 5 is a kind of structural representation for user equipment that the embodiment of the present invention 13 is provided；
Fig. 6 is a kind of structural representation for user equipment that the embodiment of the present invention 14 is provided.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The method that the present invention is provided just incidentally sends the configured information for the type that can indicate to find message when sending and finding message, reception side apparatus is allowd quickly to distinguish different types of discovery message according to configured information, then decoding can be demodulated with the discovery message interested only to needs by receiving side apparatus, so as to reduce the power consumption for receiving side apparatus, power is saved, and the time delay and complexity for receiving side apparatus processing discovery message can be reduced.The embodiment of the present invention is described in further detail with reference to Figure of description.
Embodiment one
As shown in figure 1, the embodiment of the present invention, which provides a kind of physics skidding, finds channel PSDCH sending methods, the first user equipment is communicated with second user equipment by device-to-device (D2D) mode, and this method includes：
Step 101, when first user equipment is sent to the second user equipment finds message (D2D discovery), type information corresponding with the type of the discovery message is generated；
In embodiments of the present invention, the type of the discovery message includes user equipment to network trunk discovery (UE-to-network relay discovery), group membership's discovery (Group Member Discovery), commercial discovery (commercial discovery) and car to the one or several kinds in node (vehicle to anything, V2X).
Step 102, the discovery message and the type information are sent to the second user equipment so that
The second user equipment determines the type of the discovery message based on the type information.
The method that the embodiment of the present invention is provided is by generating type information corresponding with the type of discovery message, and type information is sent to receiving side by way of setting, enable receiving side to distinguish different types of discovery message in physical layer, processing is made decisions so as to avoid that high level will be delivered to after all discovery message demodulations.The power consumption of reduction terminal has been reached, power has been saved, and the effect of terminal processes complexity can be reduced.
In embodiments of the present invention, type information can be indicated in several ways, and the scheme of several optimizations presented below is specifically included：
Embodiment two
In the embodiment, by finding that the scrambler of message indicates type information, then generation type information corresponding with the type of the discovery message includes：
Setting cell ID (cell ID) corresponding with the type of the discovery message and/or customer equipment identification (RNTI) when scrambling code generator is initialized；
The generation corresponding scrambler of type for finding message.
In specific application, the implementation can be：
Influence the parameter of Discovery scramble sequences as shown in table 1, (cell ID) is identified in the parameter cell corresponding to the Scrambling parts shown in table 1, wireless network indicates (Radio-Network Temporary Identifier temporarily, RNTI), timeslot number (Slot number) and code word number (Codeword number：CW number) etc. parameter value be that correspondence modification can be made according to the type for finding message so that receiving side determines to find the type of message according to different parameter value.
Table 1
If using the cell ID and RNTI in above-mentioned adjustable parameters to finding that the type of message refers to
Show, then instantiation can be (example is an instantiation of this programme, and not limiting the present invention program can only be realized by two kinds of parameters, during concrete implementation, can select any adjustable parameter in table 1)：
In existing D2D systems, cell ID are fixed as 510, RNTI and are fixed as 0, therefore scrambling/scrambling sequence of be found message is identical.In this embodiment, in order to distinguish different types of discovery message, cell ID or RNTI can be set to different values, therefore scrambling/scrambling sequence of generation is also different, using the scrambler sequence after parameter adjustment to finding that message is carried out after scrambling processing, receiving side is sent to；Receiving side can find that the corresponding different parameter of type of message generates different local scrambler sequences according to different, when the scrambler sequence matching of local scrambler sequence and the discovery message sent, be possible to solve the discovery message received, so that receiving the type that lateral terminal finds the discovery message that message can be received by the parameter identification of scrambler sequence by detecting.
Further, because there is the UE-to-network relay discovery of different hop counts, so in specific application environment, in addition to each is distinguished using Cell ID and/or RNTI different values and finds message, UE-to-network relay discovery different hop counts can also be distinguished using Cell ID and/or RNTI different values.
The specific all kinds for illustrating and discovery message being indicated by adjusting parameter cell ID and RNTI are given below, for example：
Cell ID=511, RNTI=0；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Cell ID=511, RNTI=1；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Cell ID=510, RNTI=0；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Cell ID=510, RNTI=1；Correspondence finds that the car in the type of message communicates to node V2X.
It is above-mentioned, it has been merely given as distinguishing a kind of various achievable modes for finding type of message using cell ID and RNTI different parameters value, because cell ID and RNTI can take different values in certain interval, and cell ID and RNTI different parameters value can also be combined, so above-mentioned reality
Parameter value in example is that one kind is implemented, and cell ID and RNTI can indicate various discovery type of messages by other any adoptable values in concrete implementation.
Embodiment three
In the embodiment, type information is indicated by demodulated reference signal (demodulation reference signal, DMRS), then generation type information corresponding with the type of the discovery message includes：
Set cell ID (Cell ID) corresponding with the type of the discovery message, cyclic shift (Cyclic shift,) and one or more combinations in superposition orthogonal code (orthogonal Cover Code, OCC) CS；
Generate demodulated reference signal corresponding with the type of the discovery message.
In specific application, the implementation can be：
Table 1 gives the parameter of influence DMRS sequences, including cell ID (Cell ID), cyclic shift (Cyclic shift,) and superposition orthogonal code (orthogonal Cover Code CS, OCC), the Cell ID of DMRS basic sequences are set to 510 fixed, CS and are set to 0, OCC to be set to [11] in existing D2D systems.In embodiments of the present invention, find that cell ID, CS and OCC can be set to different values by the type of message to distinguish, therefore the DMRS of generation is also different, so that receiving lateral terminal finds that the DMRS sequences of message are the recognizable type for finding message by detecting.
The specific all kinds for illustrating and discovery message being indicated by adjusting parameter cell ID, CS and OCC are given below, for example：
Cell ID=511, CS=0；OCC=[11]；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Cell ID=511, CS=0；OCC=[1-1]；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Cell ID=510, CS=0；OCC=[11]；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Cell ID=510, CS=1；OCC=[1-1]；Correspondence finds car in the type of message to node V2X.
Example IV
Type information indicates that then generation type information corresponding with the type of the discovery message includes by mask：
In the superior masks corresponding with the type of CRC CRC of the discovery message.
In specific application, the implementation can be：
It is existing to find that message uses 24bit CRC (Cyclic Redundancy Check, CRC), in order to distinguish the different type for finding message, in this embodiment it is possible to multiply a mask corresponding with the type of discovery message on the basis of CRC length is not changed to distinguish the different type of discovery message.
Because the value of the mask can arbitrarily be chosen in rational span, in order to be illustrated to the present embodiment, several optional implementations presented below, for example：
Mask code sequence is<101010101010101010101010>；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Mask code sequence is<010101010101010101010101>；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Mask code sequence is<111111111111111111111111>；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Mask code sequence is<1111111111110000000000000>；Correspondence finds car in the type of message to node V2X.
Receiving side is carried out to the packet received after decoding generation CRC, it is multiplied using the corresponding mask code sequence of different types of discovery message set in advance with the CRC of the generation, result after the multiplying CRC self-contained with the packet received is compared, result and the self-contained CRC match of packet after the corresponding mask code sequence of discovery message of the first kind is multiplied with the CRC generated, then the type of the discovery message received is the first kind.
Embodiment five
Type information is indicated by finding that message distributes resource pool, it is determined that finding the method for the type of message can be：
The different types of resource pool for finding that message correspondence distribution is different, when sending discovery message, discovery message is launched according to the type for finding message in corresponding resource pool.
In specific application, the implementation can be：
In the embodiment, made a distinction by distributing different resource pools for different discovery message.The resource pool can be base station configuration or the set of predefined running time-frequency resource.Can be separate no overlapping or some or all of overlapping between resource pool.According to the difference for finding type of message, corresponding resource pool is distributed for the discovery message of each type, if so that receive side apparatus receives discovery message in a certain resource pool, can be according to resource pool with finding that the corresponding relation of type of message determines which kind of type is the discovery message received be, such as in a particular application：
UE-to-network relay discovery launch in resource pool 1；
Group Member Discovery launch in resource pool 2；
Commercial Disovery launch in resource pool 3；
V2X information is launched in resource pool 4；
Resource pool 1,2,3 and 4 is all either predefined by base station configuration, and is broadcasted by way of broadcast in cell.So receiving discovery message in resource pool 1 when receiving side apparatus, by the discovery message and the relation of resource pool gone out given in examples detailed above, then the type that can determine the discovery message received is UE-to-network relay discovery.
Embodiment six
As shown in Fig. 2 the embodiment of the present invention, which provides a kind of physics skidding, finds channel PSDCH method of reseptances, the first user equipment is communicated with second user equipment by device-to-device (D2D) mode, and this method includes：
Step 201, second user equipment receives the discovery message (it was found that message) that first user equipment is sent；
Step 202, second user equipment obtains type information corresponding with the type of the discovery message, base
The type of the discovery message is determined in the type information.
Wherein, the type of the discovery message includes user equipment to network trunk discovery (UE-to-network relay discovery), group membership's discovery (Group Member Discovery), commercial discovery (commercial discovery) and car to the one or several kinds in node (vehicle to anything, V2X).
In the method that the embodiment of the present invention is provided, side apparatus is received to receive after discovery message, by obtaining type information corresponding with the type of discovery message, using the different types of discovery message of the type data separation, processing is made decisions so as to avoid that high level will be delivered to after all discovery message demodulations.The power consumption of reduction terminal has been reached, power has been saved, and the effect of terminal processes complexity can be reduced.
In embodiments of the present invention, may be used to indicate the mode of type information include it is a variety of, based on different indicating mode receive side apparatus can corresponding acquisition type information in the following manner, specifically include：
Embodiment seven
The type information sending method that correspondence embodiment two is used, when type information is indicated by the scrambler of the discovery message, receive side apparatus and obtain type information corresponding with the type of the discovery message, the type for determining the discovery message based on the type information includes：
To the discovery message descrambling, scrambler corresponding with the discovery message is obtained；
Cell ID (cell ID) and/or customer equipment identification (RNTI) in the scrambler determine the type of the discovery message.
For example：The concrete example provided with reference to embodiment two, it is situations below with parameter cell ID and RNTI corresponding relation to find all kinds of message：
Cell ID=511, RNTI=0；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Cell ID=511, RNTI=1；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Cell ID=510, RNTI=0；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Cell ID=510, RNTI=1；Correspondence finds that the car in the type of message communicates to node V2X.
It is then corresponding, if receiving Cell ID=510, RNTI=0 in the scrambler that side apparatus is obtained；Both the type that the discovery message received can be determined is commercial discovery (commercial discovery).Other kinds of analysis mode is identical, repeats no more here.
Embodiment eight
The type information sending method that correspondence embodiment three is used, type information is indicated by demodulated reference signal (DMRS), receive side apparatus and obtain type information corresponding with the type of the discovery message, the type for determining the discovery message based on the type information includes：
Obtain demodulated reference signal corresponding with the discovery message；
The type for finding message is determined based on one or more combinations in the cell ID (Cell ID) in the demodulated reference signal, cyclic shift (CS) and superposition orthogonal code (OCC).
For example：The concrete example provided with reference to embodiment three, it is situations below with parameter cell ID, CS and OCC corresponding relation to find all kinds of message：
Cell ID=511, CS=0；OCC=[11]；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Cell ID=511, CS=0；OCC=[1-1]；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Cell ID=510, CS=0；OCC=[11]；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Cell ID=510, CS=1；OCC=[1-1]；Correspondence finds car in the type of message to node V2X.
It is then corresponding, if receiving side apparatus from the Cell ID=510, CS=0 that obtain in demodulated reference signal；OCC=[11]；The type that the discovery message received can then be determined is commercial discovery (commercial discovery).
Embodiment nine
The type information sending method that example IV is used is corresponded to, type information is indicated by mask, then
Receive side apparatus and obtain type information corresponding with the type of the discovery message, the type for determining the discovery message based on the type information includes：
Obtain CRC (CRC) corresponding with the discovery message；
The corresponding mask of CRC (CRC) based on the discovery message determines the type of the discovery message.
I.e. receiving side is carried out to the packet received after decoding generation CRC, it is multiplied using the corresponding mask code sequence of different types of discovery message set in advance with the CRC of the generation, result after the multiplying CRC self-contained with the packet received is compared, result and the self-contained CRC match of packet after the corresponding mask code sequence of discovery message of the first kind is multiplied with the CRC generated, then the type of the discovery message received is the first kind.
For example：The concrete example provided with reference to example IV, it is found that all kinds of message and the value corresponding relation of mask are situations below：
Mask code sequence is<101010101010101010101010>；Correspondence finds that the user equipment in the type of message finds (UE-to-network relay discovery) to network trunk；
Mask code sequence is<010101010101010101010101>；Correspondence finds that the group membership in the type of message has found (Group Member Discovery)；
Mask code sequence is<111111111111111111111111>；Correspondence finds the commercial discovery (commercial discovery) in the type of message；
Mask code sequence is<1111111111110000000000000>；Correspondence finds car in the type of message to node V2X.
Packet is carried out after decoding generation CRC, the mask corresponding to above-mentioned several types is multiplied with the CRC and obtains four multiplied results；The CRC (CRC before not decoding) that each multiplied result and packet are initially carried is compared, if mask code sequence<1111111111110000000000000>Resulting multiplied result is identical with the CRC initially carried, then the type that can determine the discovery message received is car to node V2X.
Embodiment ten
Type information is indicated by finding that message distributes resource pool, it is determined that finding the method for the type of message can be：
When receiving discovery message, it is determined that the resource pool of the discovery message is received, and according to the resource pool prestored and the corresponding relation for finding type of message, it is determined that the type of the discovery message received.
In specific application, the implementation can be：
In the embodiment, because send side apparatus distributes different resource pools to finding that message is transmitted according to the type for finding message.The resource pool can be base station configuration or the set of predefined running time-frequency resource.Can be separate no overlapping or some or all of overlapping between resource pool.So if receive side apparatus receives discovery message in a certain resource pool, which kind of type is the discovery message that can be received according to corresponding relation determination of the resource pool with finding type of message be, for example in a particular application：
UE-to-network relay discovery launch in resource pool 1；
Group Member Discovery launch in resource pool 2；
Commercial Disovery launch in resource pool 3；
V2X information is launched in resource pool 4；
Resource pool 1,2,3 and 4 is all either predefined by base station configuration, and is broadcasted by way of broadcast in cell.So receiving discovery message in resource pool 1 when receiving side apparatus, by the discovery message and the relation of resource pool gone out given in examples detailed above, then the type that can determine the discovery message received is UE-to-network relay discovery.
Embodiment 11
As shown in figure 3, the embodiment of the present invention, which provides a kind of physics skidding, finds channel PSDCH dispensing devices 300, the device 300 is communicated with second user equipment by device-to-device (D2D) mode, and the device 300 includes：
Generation unit 301, the corresponding type information of type for generating with finding message；
Transmitting element 302, for sending the discovery message and the type information to the second user equipment, wherein, the type information is used to indicate that the second user equipment is determined based on the type information
The type for finding message.
Wherein, the type for the discovery message that the transmitting element 302 is sent includes user equipment to network trunk discovery (UE-to-network relay discovery), group membership's discovery (Group Member Discovery), commercial discovery (commercial discovery) and car to the one or several kinds in node (vehicle to anything, V2X).
In embodiments of the present invention, type information can be indicated with various ways, the scheme of several optimizations presented below is specifically included：
One, the type information is indicated by the scrambler of the discovery message, then the generation unit 301 is specifically for setting cell ID (cell ID) corresponding with the type of the discovery message and/or customer equipment identification (RNTI) when scrambling code generator is initialized；Control the scrambling code generator generation corresponding scrambler of type for finding message.
Two, the type information is indicated by demodulated reference signal (DMRS), then the generation unit 301 is specifically for setting one or more combinations in cell ID (Cell ID) corresponding with the type of the discovery message, cyclic shift (CS) and superposition orthogonal code (OCC)；Generate demodulated reference signal corresponding with the type of the discovery message.
Three, the type information is indicated by mask, then the generation unit 301 is specifically for the superior mask corresponding with the type of CRC (CRC) in the discovery message.
Embodiment 12
As shown in figure 4, the embodiment of the present invention, which provides a kind of physics skidding, finds channel PSDCH reception devices 400, the device 400 is communicated with second user equipment by device-to-device (D2D) mode, and the device 400 includes：
Receiving unit 401, for receiving discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；
Type determining units 402, the type for determining the discovery message based on the type information.
Wherein, type determining units 402 are user equipment to network trunk discovery (UE-to-network relay discovery), group membership specifically for the type that the discovery message is determined according to the type information
It was found that (Group Member Discovery), commercial discovery (commercial discovery) and car are to the one or several kinds in node (vehicle to anything, V2X).
The dispensing device transmission types information provided based on embodiment 11 is by the way of, and the reception device correspondence that the embodiment is provided is specifically included：
One, by finding that the scrambler of message indicates the type information, then the type determining unit 402 is specifically for the discovery message descrambling, obtaining scrambler corresponding with the discovery message；Cell ID (cell ID) and/or customer equipment identification (RNTI) in the scrambler determine the type of the discovery message.
Two, the type information is indicated by demodulated reference signal (DMRS), then the type determining unit 402 is specifically for obtaining demodulated reference signal corresponding with the discovery message；The type for finding message is determined based on one or more combinations in the cell ID (Cell ID) in the demodulated reference signal, cyclic shift (CS) and superposition orthogonal code (OCC).
Three, the type information is indicated by mask, then the type determining unit 402 is specifically for obtaining CRC (CRC) corresponding with the discovery message；The corresponding mask of CRC (CRC) based on the discovery message determines the type of the discovery message.
Embodiment 13
As shown in figure 5, the embodiment of the present invention provides a kind of user equipment 500, the user equipment 500 is communicated with second user equipment by device-to-device (D2D) mode, and the user equipment 500 includes：
Processor 501, the corresponding type information of type for generating with finding message；
Transmitter 502, for sending the discovery message and the type information to the second user equipment, wherein, the type information is used for the type for indicating that the second user equipment determines the discovery message based on the type information.
Wherein, the type for the discovery message that the transmitter 502 is sent includes user equipment to network trunk discovery (UE-to-network relay discovery), group membership's discovery (Group Member Discovery), commercial discovery (commercial discovery) and car to the one or several kinds in node (vehicle to anything, V2X).
In embodiments of the present invention, type information can be indicated with various ways, the scheme of several optimizations presented below is specifically included：
One, the type information is indicated by the scrambler of the discovery message, then the processor 501 is specifically for setting cell ID (cell ID) corresponding with the type of the discovery message and/or customer equipment identification (RNTI) when scrambling code generator is initialized；Control the scrambling code generator generation corresponding scrambler of type for finding message.
Two, the type information is indicated by demodulated reference signal (DMRS), then the processor 501 is specifically for setting one or more combinations in cell ID (Cell ID) corresponding with the type of the discovery message, cyclic shift (CS) and superposition orthogonal code (OCC)；Generate demodulated reference signal corresponding with the type of the discovery message.
Three, the type information is indicated by mask, then the processor 501 is specifically for the superior mask corresponding with the type of CRC (CRC) in the discovery message.
Embodiment 14
As shown in fig. 6, the embodiment of the present invention provides a kind of user equipment 600, the device 600 is communicated with second user equipment by device-to-device (D2D) mode, and the device 600 includes：
Receiver 601, for receiving discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；
Processor 602, the type for determining the discovery message based on the type information.
Wherein, processor 602 is user equipment to network trunk discovery (UE-to-network relay discovery), group membership's discovery (Group Member Discovery), commercial discovery (commercial discovery) and car to the one or several kinds in node (vehicle to anything, V2X) specifically for the type that the discovery message is determined according to the type information.
The dispensing device transmission types information provided based on embodiment 11 is by the way of, and the reception device correspondence that the embodiment is provided is specifically included：
One, by finding that the scrambler of message indicates the type information, then the processor 602 is specifically for the discovery message descrambling, obtaining scrambler corresponding with the discovery message；According in the scrambler
Cell ID (cell ID) and/or customer equipment identification (RNTI) determine the type of the discovery message.
Two, the type information is indicated by demodulated reference signal (DMRS), then the processor 602 is specifically for obtaining demodulated reference signal corresponding with the discovery message；The type for finding message is determined based on one or more combinations in the cell ID (Cell ID) in the demodulated reference signal, cyclic shift (CS) and superposition orthogonal code (OCC).
Three, the type information is indicated by mask, then the processor 602 is specifically for obtaining CRC (CRC) corresponding with the discovery message；The corresponding mask of CRC (CRC) based on the discovery message determines the type of the discovery message.
Said one or multiple technical schemes in the embodiment of the present application, at least have the following technical effect that：
The method and apparatus that the present invention is provided just incidentally send the configured information for the type that can indicate to find message when sending and finding message, so that receive side apparatus just can distinguish different types of discovery message in physical layer according to configured information, then receiving side apparatus can be demodulated with the discovery message only to needs, so as to reduce the power consumption for receiving side apparatus, power is saved, and the complexity for receiving side apparatus processing discovery message can be reduced.
Method of the present invention is not limited to the embodiment described in embodiment, and those skilled in the art's technique according to the invention scheme draws other embodiments, also belongs to the technological innovation scope of the present invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention without departing from the spirit and scope of the present invention.So, if these modifications and variations of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (20)
- A kind of physics skidding finds channel PSDCH sending methods, it is characterised in that the first user equipment is communicated with second user equipment by device-to-device D2D modes, and this method includes：First user equipment generation type information corresponding with the type of discovery message；First user equipment sends the discovery message and the type information to the second user equipment, wherein, the type information is used for the type for indicating that the second user equipment determines the discovery message based on the type information.
- The method as described in claim 1, it is characterised in that the type of the discovery message includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
- Method as described in claim 1 or 2 is any, it is characterised in that the type information is indicated by the scrambler of the discovery message, then generation type information corresponding with the type for finding message include：The setting cell ID cell ID and/or customer equipment identification RNTI corresponding with the type of the discovery message when scrambling code generator is initialized；The generation corresponding scrambler of type for finding message.
- Method as described in claim 1 or 2 is any, it is characterised in that the type information is indicated by demodulated reference signal DMRS, then generation type information corresponding with the type for finding message include：Set one or more combinations in cell ID Cell ID corresponding with the type of the discovery message, cyclic shift CS and superposition orthogonal code OCC；Generate demodulated reference signal corresponding with the type of the discovery message.
- Method as described in claim 1 or 2 is any, it is characterised in that indicate the type information by mask, the then generation includes with the corresponding type information of type for finding message：In the superior masks corresponding with the type of CRC CRC of the discovery message.
- A kind of physics skidding finds channel PSDCH method of reseptances, it is characterised in that the first user sets Standby to be communicated with second user equipment by device-to-device D2D modes, this method includes：The second user equipment receives discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；Second user equipment determines the type of the discovery message based on the type information.
- Method as claimed in claim 6, it is characterised in that the type of the discovery message includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
- Method as described in claim 6 or 7 is any, it is characterised in that indicate the type information by the scrambler of the discovery message, the then type for determining the discovery message based on the type information includes：To the discovery message descrambling, scrambler corresponding with the discovery message is obtained；Cell ID cell ID and/or customer equipment identification RNTI in the scrambler determine the type of the discovery message.
- Method as described in claim 6 or 7 is any, it is characterised in that the type information is indicated by demodulated reference signal DMRS, then it is described to determine that the type of the discovery message includes based on the type information：Obtain demodulated reference signal corresponding with the discovery message；The type for finding message is determined based on one or more combinations in cell ID Cell ID, the cyclic shift CS in the demodulated reference signal and superposition orthogonal code OCC.
- Method as described in claim 6 or 7 is any, it is characterised in that the type information is indicated by mask, then described to determine that the type of the discovery message includes based on the type information：Obtain CRC CRC corresponding with the discovery message；The corresponding masks of CRC CRC based on the discovery message determine the type of the discovery message.
- A kind of physics skidding finds channel PSDCH dispensing devices, it is characterised in that the device is communicated with second user equipment by device-to-device D2D modes, and the device includes：Generation unit, the corresponding type information of type for generating with finding message；Transmitting element, for sending the discovery message and the type information to the second user equipment, wherein, the type information is used for the type for indicating that the second user equipment determines the discovery message based on the type information.
- Device as claimed in claim 11, it is characterised in that the type for the discovery message that the transmitting element is sent includes user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
- Device as described in claim 11 or 12 is any, it is characterized in that, the type information is indicated by the scrambler of the discovery message, then the generation unit is specifically for the setting cell ID cell ID and/or customer equipment identification RNTI corresponding with the type of the discovery message when scrambling code generator is initialized；Control the scrambling code generator generation corresponding scrambler of type for finding message.
- Device as described in claim 11 or 12 is any, it is characterized in that, the type information is indicated by demodulated reference signal DMRS, then the generation unit is specifically for setting one or more combinations in cell ID Cell ID corresponding with the type of the discovery message, cyclic shift CS and superposition orthogonal code OCC；Generate demodulated reference signal corresponding with the type of the discovery message.
- Device as described in claim 11 or 12 is any, it is characterised in that indicate the type information by mask, then the generation unit is specifically for the superior masks corresponding with the type of CRC CRC in the discovery message.
- A kind of physics skidding finds channel PSDCH reception devices, it is characterised in that the device is communicated with second user equipment by device-to-device D2D modes, and the device includes：Receiving unit, for receiving discovery message and the type information corresponding with the type of the discovery message that first user equipment is sent；Type determining units, the type for determining the discovery message based on the type information.
- Device as claimed in claim 16, characterized in that, the type determining units according to the type information specifically for determining that the type of the discovery message is user equipment to network trunk discovery, group membership's discovery, commercial discovery and car to the one or several kinds in node V2X.
- Device as described in claim 16 or 17 is any, it is characterised in that indicate the type information by the scrambler of the discovery message, then the type determining units to the discovery specifically for disappearing Breath descrambling, obtains scrambler corresponding with the discovery message；Cell ID cell ID and/or customer equipment identification RNTI in the scrambler determine the type of the discovery message.
- Device as described in claim 16 or 17 is any, it is characterised in that indicate the type information by demodulated reference signal DMRS, then the type determining units are specifically for obtaining demodulated reference signal corresponding with the discovery message；The type for finding message is determined based on one or more combinations in cell ID Cell ID, the cyclic shift CS in the demodulated reference signal and superposition orthogonal code OCC.
- Device as described in claim 16 or 17 is any, it is characterised in that the type information indicates that then the type determining units are specifically for obtaining CRC CRC corresponding with the discovery message by mask；The corresponding masks of CRC CRC based on the discovery message determine the type of the discovery message.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/076200 WO2016161607A1 (en) | 2015-04-09 | 2015-04-09 | Physical sidelink discovery channel (psdch) sending method and apparatus |
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| CN107005914A true CN107005914A (en) | 2017-08-01 |
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| CN201580065500.6A Pending CN107005914A (en) | 2015-04-09 | 2015-04-09 | A kind of physics skidding finds channel PSDCH sending methods and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582069A (en) * | 2012-07-26 | 2014-02-12 | 中兴通讯股份有限公司 | Method and device for discovering device-to-device (D2D) devices |
| CN103716776A (en) * | 2012-10-09 | 2014-04-09 | 华为技术有限公司 | D2D communication method and user equipment |
| CN104105155A (en) * | 2013-04-01 | 2014-10-15 | 中兴通讯股份有限公司 | Device discovery information receiving method, device discovery information transmitting method and user device |
| CN104244363A (en) * | 2013-06-07 | 2014-12-24 | 电信科学技术研究院 | Method for detecting discovering information, terminal and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104581685B (en) * | 2013-10-18 | 2018-12-14 | 电信科学技术研究院 | It was found that the method for sending and receiving and transmission and receiving device of signal |
| CN105432101A (en) * | 2014-04-01 | 2016-03-23 | 索尼株式会社 | Unified header design for discovery messages |
-
2015
- 2015-04-09 WO PCT/CN2015/076200 patent/WO2016161607A1/en active Application Filing
- 2015-04-09 CN CN201580065500.6A patent/CN107005914A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582069A (en) * | 2012-07-26 | 2014-02-12 | 中兴通讯股份有限公司 | Method and device for discovering device-to-device (D2D) devices |
| CN103716776A (en) * | 2012-10-09 | 2014-04-09 | 华为技术有限公司 | D2D communication method and user equipment |
| CN104105155A (en) * | 2013-04-01 | 2014-10-15 | 中兴通讯股份有限公司 | Device discovery information receiving method, device discovery information transmitting method and user device |
| CN104244363A (en) * | 2013-06-07 | 2014-12-24 | 电信科学技术研究院 | Method for detecting discovering information, terminal and system |
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