WO2018171432A1 - 下行同步方法和装置 - Google Patents
下行同步方法和装置 Download PDFInfo
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- WO2018171432A1 WO2018171432A1 PCT/CN2018/078333 CN2018078333W WO2018171432A1 WO 2018171432 A1 WO2018171432 A1 WO 2018171432A1 CN 2018078333 W CN2018078333 W CN 2018078333W WO 2018171432 A1 WO2018171432 A1 WO 2018171432A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
Definitions
- the present application relates to communication technologies, and in particular, to a downlink synchronization method and apparatus.
- a user equipment When a user equipment (User Equipment, UE) accesses a mobile communication cell, it first performs cell search and performs downlink synchronization. During the downlink synchronization process, the UE detects the Synchronization Signal (SS) and decodes the Physical Layer Broadcast Channel (PBCH), so that key system parameter information can be obtained.
- SS Synchronization Signal
- PBCH Physical Layer Broadcast Channel
- the synchronization signal is divided into a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- both PSS and SSS occupy 6 consecutive Resource Blocks (RBs) and are configured with fixed time-frequency resource locations in the radio frame.
- the design of the synchronization signal adopts a different structure. Due to the implementation of the beam sweep technique, in order to increase the success rate of the synchronization access, the synchronization signal is sent by multiple beams.
- PSS and SSS form a sync block (SS block) in a frequency division manner. Each sync block is sent using an analog beam.
- a plurality of SS blocks form a sync burst (SS burst), and a plurality of SS bursts form a SS burst set.
- An SS burst set corresponds to a complete beam scanning process. It also specifies that the SS burst set contains at least one default period and can have multiple optional periods. At the same time, it also specifies the time position of the SS block in the radio frame, but the Transmission and Reception Point (TRP) can transmit the SS block at a specific time position according to requirements, and the vacant part position can be used as other use.
- TRP Transmission and Reception Point
- the UE needs to perform multiple correlation detection using the SS to determine the period of the SS burst set. And the time position of the SS block in the radio frame, resulting in low downlink measurement efficiency.
- the embodiments of the present invention provide a downlink synchronization method and device, so that the UE can use the synchronization signal to perform downlink synchronization more accurately, and effectively improve the utilization of spectrum resources.
- an embodiment of the present invention provides a downlink synchronization method, including:
- the sending, by the user equipment, the configuration information of the synchronization signal block includes:
- the configuration information of the synchronization signal block is transmitted to the user equipment through a system information block.
- the location indication information includes a location indication value, where the location indication value is used by the user equipment according to the location indication value and the first preset
- the mapping relationship determines the position of the sync signal block in the set of sync patterns.
- the location indication information includes an N-bit binary number, and N is a synchronization signal in the synchronization signal array set.
- the number of blocks, each bit of the N-bit binary number respectively corresponds to a sync signal block, and the N-bit binary number is used by the user equipment to determine the position of the sync signal block in the sync signal array according to each binary value.
- the binary value 1 is used to indicate a corresponding position transmission synchronization signal block in the synchronization signal array set,
- the binary value 0 is used to indicate that the corresponding position in the synchronization signal array is not sent the synchronization signal block;
- the binary value 1 is used to indicate that the corresponding position in the synchronization signal array is not transmitted, and the binary value 0 is used to indicate the corresponding position transmission synchronization signal block in the synchronization signal array.
- the configuration information of the synchronization signal block further includes time period indication information, where the time period is The indication information is used to indicate a time period of the synchronization signal array set.
- an embodiment of the present invention provides a downlink synchronization method, including:
- the receiving, by the sending, receiving, and receiving, the configuration information of the synchronization signal block that is sent by the TRP includes:
- Radio resource control RRC message includes configuration information of the synchronization signal block
- a synchronization signal block sent by the TRP where the synchronization signal block includes a synchronization signal and a physical layer broadcast channel PBCH, where the PBCH includes configuration information of the synchronization signal block;
- the location indication information includes a location indication value
- Determining, according to the location indication information, a location of the synchronization signal block in the synchronization signal array, and receiving the synchronization signal block at the location, and performing downlink synchronization according to the synchronization signal block including:
- the location indication information includes an N-bit binary number, and N is a synchronization in the synchronization signal array set. The number of signal blocks;
- Determining, according to the location indication information, a location of the synchronization signal block in the synchronization signal array, and receiving the synchronization signal block at the location, and performing downlink synchronization according to the synchronization signal block including:
- the configuration information of the synchronization signal block further includes time period indication information
- the method further includes:
- the method further includes:
- Data or control signaling is received at a location of the asynchronous signal block in the set of synchronization signal arrays.
- an embodiment of the present invention provides a downlink synchronization method, including:
- the time period indication information includes a time period indication value, where the time period indication value is used by the user equipment according to the time period indication value and The second preset mapping relationship determines a time period of the synchronization signal array set.
- an embodiment of the present invention provides a downlink synchronization method, including:
- the time period indication information includes a time period indication value
- the method further includes:
- Data or control signaling is received at the location of the asynchronous signal block in the radio frame.
- an embodiment of the present invention provides a sending and receiving point, where the sending and receiving points have a function of implementing a sending and receiving point behavior in the foregoing method embodiment.
- This function can be implemented in hardware or in hardware by executing the corresponding software.
- the hardware or software includes one or more modules corresponding to the functions described above.
- an embodiment of the present invention provides a sending and receiving point, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when When the transmitting and receiving points are in operation, the processor executes the computer-executed instructions stored in the memory to cause the transmitting and receiving points to perform the downlink synchronization method of any one of the first aspect or the third aspect.
- an embodiment of the present invention provides a computer readable storage medium for storing computer software instructions used by the sending and receiving points, when the computer is running on a computer, so that the computer can execute the first aspect.
- an embodiment of the present invention provides a computer program product comprising instructions, which when executed on a computer, enable the computer to perform multiple access according to any one of the above first aspects or any one of the third aspects The connection processing method in the scene.
- an embodiment of the present invention provides a user equipment, where the user equipment has a function of implementing user equipment behavior in the foregoing method embodiment.
- This function can be implemented in hardware or in hardware by executing the corresponding software.
- the hardware or software includes one or more modules corresponding to the functions described above.
- an embodiment of the present invention provides a user equipment, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when the user equipment In operation, the processor executes the computer-executed instructions stored in the memory to cause the user equipment to perform the downlink synchronization method of any one of the second aspect or the fourth aspect.
- the downlink synchronization method and device of the embodiment of the present invention sends the configuration information of the synchronization signal block to the user equipment by using the TRP.
- the configuration information of the synchronization signal block includes location indication information, and the user equipment determines, according to the location indication information, the synchronization signal block in the synchronization signal. Positions in the set of frames, and receiving the sync signal block at the position, and performing downlink synchronization according to the sync signal block. Therefore, the UE can more accurately utilize the synchronization signal for downlink synchronization, thereby effectively improving the utilization of spectrum resources.
- FIG. 1 is a schematic structural diagram of a system architecture according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a TRP 200 according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a UE 300 according to an embodiment of the present disclosure.
- 4A is a flowchart of a downlink synchronization method according to an embodiment of the present invention.
- 4B is a schematic structural diagram of an SS burst set according to an embodiment of the present invention.
- FIG. 5 is a flowchart of another downlink synchronization method according to an embodiment of the present invention.
- FIG. 6 is a flowchart of another downlink synchronization method according to an embodiment of the present invention.
- FIG. 7 is a flowchart of another downlink synchronization method according to an embodiment of the present invention.
- FIG. 8 is a flowchart of another downlink synchronization method according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a sending and receiving point according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the User Equipment may represent any applicable end user equipment, and may include (or may represent) a wireless transmit/receive unit (WTRU), a mobile station, a mobile node, Mobile devices, fixed or mobile contracting units, pagers, mobile phones, personal digital assistants (PDAs), smart phones, notebook computers, computers, touch screen devices, wireless sensors or consumer electronics devices.
- WTRU wireless transmit/receive unit
- a "mobile" station/node/device herein refers to a station/node/device connected to a wireless (or mobile) network and is not necessarily related to the actual mobility of the station/node/device.
- a plurality refers to two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
- the character "/" generally indicates that the contextual object is an "or" relationship.
- FIG. 1 is a schematic structural diagram of a system architecture according to an embodiment of the present invention.
- a communication network may include multiple TRPs and controllers, where one or more TRPs may form a super cell (Hyper). Cell), providing services for the UE.
- the boundaries of the hyper cell can be flexibly configured according to requirements.
- Figure 1 shows two Hypercells as an example. As shown in Figure 1, TRP1-1, TRP1-2, and TRP1-3 form Hypercell1, TRP2-1 and TRP2-2. The TRP 2-3 and the TRP 2-4 form a Hyper Cell 2, and the UE can use multiple TRPs to send uplink data.
- the frequency band used by TRP can be low frequency or high frequency.
- each TRP may be covered by a plurality of narrow high gain beams, each of which may communicate with the UE through multiple beams.
- time synchronization (Time Synchronization) needs to be completed. Specifically, the TRP uses different beams to transmit a synchronization signal block (SS block), and the UE completes time synchronization according to the synchronization signal block (SS block).
- SS block synchronization signal block
- the downlink synchronization method in the embodiment of the present invention indicates the period of the SS burst set and/or the location of the synchronization block (SS block) to the UE through the TRP, so that the UE can use the synchronization signal more accurately.
- Downlink synchronization effectively improves the utilization of spectrum resources.
- the SS block is used for downlink synchronization, and the SS block may include PSS, SSS, and PBCH.
- the UE may perform time synchronization using the PSS and the SSS, and decode the PBCH to obtain system parameter information.
- a plurality of SS blocks distributed in one same slot (Slot) are called a SS burst, and a plurality of SS bursts form a SS burst set.
- An SS burst set corresponds to a complete beam scanning process.
- FIG. 2 is a schematic structural diagram of a TRP 200 according to an embodiment of the present invention.
- the TRP 200 includes: at least one processor 201, at least one communication interface 203, a memory 204, and at least one communication bus 202.
- Communication bus 202 is used to implement connection communication between these components.
- Memory 204 can include read only memory and random access memory and provides instructions and data to processor 201. A portion of memory 204 may also include non-volatile random access memory (NVRAM).
- NVRAM non-volatile random access memory
- the processor 201 is configured to perform the steps of the following method embodiments, so that the UE can use the synchronization signal to perform downlink synchronization more effectively, and effectively improve.
- the UE can use the synchronization signal to perform downlink synchronization more effectively, and effectively improve.
- FIG. 3 is a schematic structural diagram of a UE 300 according to an embodiment of the present invention.
- the UE 300 includes: at least one processor 301, at least one communication interface 303, a memory 304, and at least one communication bus 302.
- Communication bus 302 is used to implement connection communication between these components.
- Memory 304 can include read only memory and random access memory and provides instructions and data to processor 301.
- a portion of memory 304 may also include non-volatile random access memory (NVRAM).
- NVRAM non-volatile random access memory
- the processor 301 is configured to perform the steps of the following method embodiments by using the program or the instruction stored in the memory 304, so that the UE can use the synchronization signal to perform downlink synchronization more effectively, and effectively improve.
- the processor 301 For the utilization of the spectrum resources, refer to the explanation of the following method embodiments.
- FIG. 4A is a flowchart of a downlink synchronization method according to an embodiment of the present invention
- FIG. 4B is a schematic structural diagram of an SS burst set according to an embodiment of the present invention.
- the method in this embodiment may include:
- Step 101 The TRP generates configuration information of a synchronization signal block, where configuration information of the synchronization signal block includes location indication information.
- Step 102 The TRP sends configuration information of the synchronization signal block to the user equipment, where the location indication information is used to indicate a location of the synchronization signal block in the synchronization signal array.
- the user equipment receives configuration information of the synchronization signal block sent by the TRP.
- the configuration information of the synchronization signal block may be specifically carried in a signaling message, or may be carried in a physical layer resource block, and may be flexibly set according to requirements. For specific embodiments thereof, reference may be made to the explanation of the following embodiments.
- Step 103 The user equipment determines, according to the location indication information, a location of the synchronization signal block in the synchronization signal array, and receives the synchronization signal block at the location, and performs downlink synchronization according to the synchronization signal block.
- the location indication information includes a location indication value, where the location indication value is used by the user equipment to determine a synchronization signal block in a synchronization signal matrix according to the location indication value and a first preset mapping relationship.
- the first preset mapping relationship includes a plurality of values and positions of the plurality of synchronization signal blocks in the synchronization signal set, and the two correspond to each other.
- the first preset mapping relationship may be stored in both the TRP and the user equipment.
- the number q corresponds to it.
- the sum of all possible subsets of the set P can be represented by B n (Bell number).
- the first preset mapping relationship includes all possible positions of the SS block in the SS burst set and a positive integer corresponding thereto, and each possible position corresponds to a positive integer one-to-one.
- the first preset mapping relationship may be:
- m and x can be flexibly set according to requirements.
- m is any positive integer and x is any positive integer less than n-m.
- n SS Blocks (SS Block #0, SS Block #1, ..., SS) distributed in r Slots (Slot i, Slot i+1, ..., and Slot i+r) Block#(n-1)) constitutes an SS Block set, in which a plurality of SS Blocks in each Slot constitute an SS burst.
- SS Block#0 and SS Block#1 in Slot i constitute SS burst#0.
- two SS Blocks are taken as an example for illustration, and of course, three, four, and the like.
- the time position corresponding to the partial SS block in the n SS blocks shown in FIG. 4B is not SS Block.
- the time position corresponding to SS Block #0 shown in FIG. 4B may be not carrying SS Block. #0. That is, the number and location of SS Blocks in an SS Block set can be flexibly set according to requirements.
- the specific location of the SS Block that is, any SS Block as shown in FIG. 4B.
- the specific location of the SS Block may have C n 2 possibilities, that is, any two SS Blocks as shown in FIG. 4B, and so on.
- the position of the SS block in the SS Block set corresponds to a value, that is, the first preset mapping relationship, when the user equipment receives the value, the SS block can be uniquely determined according to the first preset mapping relationship.
- the distribution in the SS Block set so that the SS Block can be received at the corresponding location.
- SS Block set shown in FIG. 4B is only a schematic example, and may be other forms of the structure, and the embodiment of the present invention is not limited thereto.
- the location indication information includes an N-bit binary number
- N is a number of synchronization signal blocks in the synchronization signal array set, and each bit of the N-bit binary number respectively corresponds to one synchronization signal block.
- the N-bit binary number is used by the user equipment to determine the position of the sync signal block in the set of sync patterns based on each binary value.
- the binary value 1 is used to indicate the corresponding position in the synchronization signal array to transmit the synchronization signal block, and the binary value 0 is used to indicate that the corresponding position in the synchronization signal array is not sent the synchronization signal block; or, the binary value 1 is used to indicate the synchronization signal array.
- the corresponding position in the set does not send a sync signal block, and the binary value 0 is used to indicate the corresponding position in the sync signal set to transmit the sync signal block.
- each bit of the binary number corresponds to the position of P.
- Each bit uses 0 to indicate that the SS block is not transmitted, and 1 indicates that the SS block is transmitted, or each bit indicates that no SS block is transmitted, and 0 indicates that the SS block is transmitted.
- the shape of the above binary number is further illustrated by using FIG. 4B.
- 4B's SS Block#1 corresponds, and so on, p_n corresponds to SS Block#(n-1) of FIG. 4B.
- the specific value of p_i is related to whether the time position of the SS block corresponding to p_i is SS Block.
- the location indication information may be implicitly indicated by using a binary sequence scrambling code, that is, the pseudo-number carrying the location indication information and/or the time period indication information is used to generate the pseudo.
- the random sequence eg, through a shift register
- the binary number is obtained by the UE for blind detection. This enables multiplexing of signaling without the use of additional signaling or the addition of information bits.
- a specific implementation of step 103 may be: determining, according to the location indication value and the first preset mapping relationship, a location of the synchronization signal block in the synchronization signal array, and receiving the location at the location The synchronization signal block performs downlink synchronization according to the synchronization signal block.
- step 103 may be: determining, according to the N-bit binary number, a position of the synchronization signal block in the synchronization signal array, and receiving the synchronization signal block at the location, according to The synchronization signal block performs downlink synchronization.
- the configuration information of the synchronization signal block may further include time period indication information, and the user equipment may determine a time period of the synchronization signal array set according to the time period indication value and the second preset mapping relationship.
- the second preset mapping relationship includes all possible time periods of the SS burst set and a positive integer corresponding thereto, and each possible time period corresponds to a positive integer one-to-one.
- the positive integer can be indicated by the number of bits.
- the TRP may configure other signals, such as data/control signals, where the user equipment does not send the synchronization signal block in the synchronization signal array set. Receive data/control signaling. Therefore, the spectrum resource efficiency of the UE can be effectively improved.
- the configuration information of the synchronization signal block is sent to the user equipment by using the TRP, and the configuration information of the synchronization signal block includes location indication information, and the user equipment determines, according to the location indication information, the location of the synchronization signal block in the synchronization signal array. And receiving the synchronization signal block at the location, and performing downlink synchronization according to the synchronization signal block. Therefore, the UE can more accurately utilize the synchronization signal for downlink synchronization, thereby effectively improving the utilization of spectrum resources.
- the configuration information of the synchronization signal block in the embodiment shown in FIG. 4A includes location indication information, or includes location indication information and time period indication information. Unlike the embodiment shown in FIG. 4A, the configuration of the synchronization signal block in the embodiment shown in FIG. The information includes time period indication information, as detailed in the following explanation of the embodiments.
- FIG. 5 is a flowchart of another downlink synchronization method according to an embodiment of the present invention. As shown in FIG. 5, the method in this embodiment may include:
- Step 201 The TRP generates configuration information of a synchronization signal block, where configuration information of the synchronization signal block includes time period indication information.
- Step 202 The TRP sends configuration information of the synchronization signal block to the user equipment, where the time period indication information is used to indicate a time period of the synchronization signal array.
- the user equipment receives configuration information of the synchronization signal block sent by the TRP.
- Step 203 The user equipment determines a time period of the synchronization signal array according to the time period indication information, and receives a synchronization signal block according to the time period, and performs downlink synchronization according to the synchronization signal block.
- the time period indication information includes a time period indication value, where the time period indication value is used by the user equipment to determine a time period of the synchronization signal array set according to the time period indication value and the second preset mapping relationship. .
- the second preset mapping relationship includes all possible time periods of the SS burst set and a positive integer corresponding thereto, and each possible time period corresponds to a positive integer one-to-one.
- the positive integer can be indicated by the number of bits.
- step 203 may be: determining, by the user equipment, a time period of the synchronization signal array set according to the time period indication value and the second preset mapping relationship.
- the TRP may configure other signals, such as data/control signals, where the user equipment does not send the synchronization signal block in the synchronization signal array set. Receive data/control signaling. Therefore, the spectrum resource efficiency of the UE can be effectively improved.
- the configuration information of the synchronization signal block is sent to the user equipment by using the TRP, and the configuration information of the synchronization signal block includes time period indication information, and the user equipment determines the time period of the synchronization signal array according to the time period indication information, and according to The time period receives a synchronization signal block, and performs downlink synchronization according to the synchronization signal block. Therefore, the UE can more accurately utilize the synchronization signal for downlink synchronization, thereby effectively improving the utilization of spectrum resources.
- the configuration information of the synchronization signal block as described in the above two embodiments includes position indication information and/or time period indication information.
- FIG. 6 is a flowchart of another downlink synchronization method according to an embodiment of the present invention. As shown in FIG. 6, the method in this embodiment may include:
- the TRP sends a radio resource control RRC message to the UE.
- the UE receives the RRC message sent by the TRP.
- the RRC message includes configuration information of the synchronization signal block of the foregoing embodiment.
- the RRC message may be a new type of RRC message, that is, the RRC message is used to deliver configuration information of the synchronization signal block to the UE.
- the UE acquires configuration information of the synchronization signal block according to the RRC message.
- the UE may complete downlink synchronization by using configuration information of the synchronization signal block.
- the TRP sends the configuration information of the synchronization signal block to the user equipment by using the RRC message, where the configuration information of the synchronization signal block includes time period indication information and/or location indication information, and the user equipment performs downlink synchronization according to the configuration information of the synchronization signal block. . Therefore, the configuration information of the synchronization signal block is indicated by the RRC message, so that the UE can use the synchronization signal to perform downlink synchronization more accurately, thereby effectively improving the utilization of the spectrum resource.
- FIG. 7 is a flowchart of another downlink synchronization method according to an embodiment of the present invention. As shown in FIG. 7, the method in this embodiment may include:
- the TRP sends a synchronization signal block to the UE.
- the UE receives the synchronization signal block transmitted by the TRP.
- the synchronization signal block includes a PSS, an SSS, and a PBCH, where the configuration information of the synchronization signal block of the foregoing embodiment is carried in the PBCH.
- the length of the PBCH may be increased to carry the configuration information of the synchronization signal block, that is, a bit is added to the PBCH to carry the configuration information of the synchronization signal block of the foregoing embodiment.
- the configuration information of the synchronization signal block may also be implicitly indicated by using a PBCH plus binary scrambling code. That is, a pseudo random sequence (such as a shift register) is generated by using a binary number carrying position indication information and/or time period indication information, and the PBCH is scrambled by the pseudo random sequence, and the binary number is obtained by the UE for blind detection. Thereby, the configuration information of the synchronization signal block is obtained, so that multiplexing of signaling is realized without additional bit overhead.
- a pseudo random sequence such as a shift register
- the UE performs synchronization detection.
- the UE performs synchronization detection using PSS and SSS to perform time synchronization.
- the UE decodes the PBCH, and acquires configuration information of the synchronization signal block.
- the UE decodes the PBCH to obtain configuration information of the synchronization signal block, so that the time period of the SS burst set and/or the location of the SS block in the SS burst set can be known.
- the TRP sends a synchronization signal block to the UE, and the UE performs synchronization detection, decodes the PBCH, and acquires configuration information of the synchronization signal block, and the user equipment performs downlink synchronization according to the configuration information of the synchronization signal block. Therefore, the PBCH indicates the configuration information of the synchronization signal block, so that the UE can use the synchronization signal to perform downlink synchronization more accurately, thereby effectively improving the utilization of spectrum resources.
- FIG. 8 is a flowchart of another downlink synchronization method according to an embodiment of the present invention. As shown in FIG. 8, the method in this embodiment may include:
- the TRP sends a synchronization signal block to the UE.
- the UE receives the synchronization signal block transmitted by the TRP.
- the synchronization signal block includes a PSS, an SSS, and a PBCH.
- the UE performs synchronization detection.
- the UE performs synchronization detection using the PSS and the SSS, performs time synchronization, and receives control information on the PDCCH.
- the TRP sends a System Information-Radio Network Tempory Identity (SI-RNTI) to the UE through the PDCCH.
- SI-RNTI System Information-Radio Network Tempory Identity
- the UE detects whether the PDCCH has an SI-RNTI, and if so, determines that it needs to receive the SIB.
- the UE determines, according to the SI-RNTI, that the SIB needs to be received.
- the TRP sends the SIB through the PDSCH.
- the UE decodes the SIB, and acquires configuration information of the synchronization signal block.
- the UE decodes the SIB to obtain configuration information of the synchronization signal block, so that the time period of the SS burst set and/or the location of the SS block in the SS burst set can be known.
- the foregoing SIB carrying the configuration information of the synchronization signal block may be a new SIB, or may be multiplexed with the existing SIB, and the method of multiplexing the existing SIB may be specifically performed on the existing SIB.
- Implicit indication by means of adding binary scrambling code. That is, a pseudo random sequence (such as a shift register) is generated by using a binary number carrying position indication information and/or time period indication information, and the SIB is scrambled by the pseudo random sequence, and the binary number is obtained by the UE for blind detection. Therefore, the configuration information of the synchronization signal block is obtained, so that multiplexing of signaling is realized without additional signaling overhead.
- the TRP sends configuration information of the synchronization signal block to the UE through the SIB, and the user equipment performs downlink synchronization according to the configuration information of the synchronization signal block. Therefore, the configuration information of the synchronization signal block is indicated by the SIB, so that the UE can use the synchronization signal to perform downlink synchronization more accurately, thereby effectively improving the utilization of spectrum resources.
- the downlink synchronization method according to an embodiment of the present invention is described in detail above with reference to FIGS. 4A through 8.
- the embodiment of the present invention further provides a sending and receiving point and a user equipment, and the working principle or function of each module of the sending and receiving point and the user equipment may refer to the foregoing method flow in FIG. 4A and FIG. 8 , and details are not described herein again.
- FIG. 9 is a schematic structural diagram of a sending and receiving point according to an embodiment of the present invention.
- the apparatus in this embodiment may include: a processing module 11 and a sending module 12, where the processing module 11 is configured to generate a synchronization.
- the configuration information of the signal block, the configuration information of the synchronization signal block includes location indication information, and the sending module 12 is configured to send configuration information of the synchronization signal block to the user equipment, where the location indication information is used to indicate that the synchronization signal block is The position in the set of sync patterns.
- the sending module 12 is specifically configured to: send, by using a radio resource control RRC message, configuration information of the synchronization signal block to the user equipment; or send the synchronization to the user equipment by using a physical layer broadcast channel.
- the configuration information of the signal block; or the configuration information of the synchronization signal block is sent to the user equipment through the system information block.
- the location indication information includes a location indication value, where the location indication value is used by the user equipment to determine a location of the synchronization signal block in the synchronization signal array according to the location indication value and the first preset mapping relationship. .
- the location indication information includes an N-bit binary number, where N is the number of synchronization signal blocks in the synchronization signal array, and each bit of the N-bit binary number corresponds to a synchronization signal block, and the N-bit binary number is used.
- the user equipment determines the position of the synchronization signal block in the synchronization signal array according to each binary value.
- the binary value 1 is used to indicate a corresponding position in the synchronization signal array to send the synchronization signal block, and the binary value 0 is used to indicate that the corresponding position in the synchronization signal array is not sent the synchronization signal block; or, the binary value 1 is used to The synchronization signal block is not sent in the corresponding position in the set of the synchronization signal array, and the binary value 0 is used to indicate the corresponding position transmission synchronization signal block in the synchronization signal array set.
- the configuration information of the synchronization signal block further includes time period indication information, where the time period indication information is used to indicate a time period of the synchronization signal array set.
- the device in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
- FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the apparatus in this embodiment may include: a receiving module 21 and a processing module 22, where the receiving module 21 is configured to receive, send, and receive.
- the configuration information of the synchronization signal block sent by the TRP, the configuration information of the synchronization signal block includes location indication information, and the processing module 22 is configured to determine, according to the location indication information, a location of the synchronization signal block in the synchronization signal array set, and Receiving the synchronization signal block at the location, and performing downlink synchronization according to the synchronization signal block.
- the receiving module 21 is specifically configured to: receive a radio resource control RRC message sent by the TRP, where the radio resource control RRC message includes configuration information of the synchronization signal block; or receive the TRP transmission a synchronization signal block, the synchronization signal block including a synchronization signal and a physical layer broadcast channel PBCH, the PBCH including configuration information of the synchronization signal block; or receiving a system information block of the TRP transmission, the system information block including Configuration information of the synchronization signal block.
- the location indication information includes a location indication value
- the processing module 22 is configured to: determine, according to the location indication value and the first preset mapping relationship, a location of the synchronization signal block in the synchronization signal array set, and Receiving the synchronization signal block at the location, and performing downlink synchronization according to the synchronization signal block.
- the location indication information includes an N-bit binary number, where N is the number of synchronization signal blocks in the synchronization signal array set.
- the processing module 22 is specifically configured to: determine, according to the N-bit binary number, a synchronization signal block. And synchronizing the position in the set of signal arrays, and receiving the synchronization signal block at the position, and performing downlink synchronization according to the synchronization signal block.
- the configuration information of the synchronization signal block further includes time period indication information
- the processing module 22 is further configured to: determine a time period of the synchronization signal array set according to the time period indication information and the second preset mapping relationship. .
- the receiving module 21 is further configured to: receive data or control signaling at a location of the asynchronous signal block in the synchronization signal array.
- the device in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
- the embodiment of the present invention further provides another sending and receiving point, and the connection structure diagram is the same as the connection structure shown in FIG. 9.
- the processing module is configured to generate configuration information of the synchronization signal block, and configuration information of the synchronization signal block.
- a sending module configured to send configuration information of the synchronization signal block to the user equipment, where the time period indication information is used to indicate a time period of the synchronization signal array.
- the time period indication information includes a time period indication value, where the time period indication value is used by the user equipment to determine a time period of the synchronization signal array set according to the time period indication value and the second preset mapping relationship. .
- the device in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
- the embodiment of the present invention further provides another user equipment, the connection structure diagram is the same as the connection structure shown in FIG. 10, wherein the receiving module is configured to receive configuration information of the synchronization signal block sent by the transmitting and receiving point TRP, the synchronization
- the configuration information of the signal block includes time period indication information
- the processing module is configured to determine a time period of the synchronization signal array according to the time period indication information, and receive a synchronization signal block according to the time period, according to the synchronization signal block. Downstream synchronization.
- the time period indication information includes a time period indication value
- the processing module is configured to: determine a time period of the synchronization signal array set according to the time period indication value and the second preset mapping relationship.
- the receiving module is further configured to: receive data or control signaling at a location of the asynchronous signal block in the radio frame.
- the device in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
- the embodiment of the present invention further provides a computer readable storage medium for storing computer software used for the sending and receiving points.
- the instructions when run on a computer, cause the computer to perform various possible downstream synchronization methods in the above method embodiments.
- the processes or functions described in accordance with embodiments of the present invention may be generated in whole or in part.
- the computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, such as cellular communication, infrared, short-range wireless, microwave Etc.) Transfer to another website site, computer, server, or data center.
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
- the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
- embodiments of the present invention also provide a computer program product, i.e., a software product, containing instructions that, when run on a computer, cause the computer to perform various possible downlink synchronization methods in the above method embodiments.
- a computer program product i.e., a software product
- the implementation principle and technical effect are similar, and will not be described here.
Abstract
Description
q=1 | 取前m个SS block |
q=2 | 取后m个SS block |
q=3 | 每隔x个位置,取前m个SS block |
q=4 | 每隔x个位置,取后m个SS block |
Claims (38)
- 一种下行同步方法,其特征在于,包括:生成同步信号块的配置信息,所述同步信号块的配置信息包括位置指示信息;向用户设备发送所述同步信号块的配置信息,所述位置指示信息用于指示同步信号块在同步信号阵集合中的位置。
- 根据权利要求1所述的方法,其特征在于,所述向用户设备发送所述同步信号块的配置信息,包括:通过无线资源控制RRC消息向所述用户设备发送所述同步信号块的配置信息;或者,通过物理层广播信道向所述用户设备发送所述同步信号块的配置信息;或者,通过系统信息块向所述用户设备发送所述同步信号块的配置信息。
- 根据权利要求1或2所述的方法,其特征在于,所述位置指示信息包括位置指示数值,所述位置指示数值用于所述用户设备根据所述位置指示数值和第一预设映射关系确定同步信号块在同步信号阵集合中的位置。
- 根据权利要求1或2所述的方法,其特征在于,所述位置指示信息包括N位二进制数,N为同步信号阵集合中同步信号块的个数,N位二进制数的每一位分别与一个同步信号块对应,N位二进制数用于所述用户设备根据每一位二进制数值确定同步信号块在同步信号阵集合中的位置。
- 根据权利要求4所述的方法,其特征在于,二进制数值1用于指示同步信号阵集合中对应的位置发送同步信号块,二进制数值0用于指示同步信号阵集合中对应的位置未发送同步信号块;或者,二进制数值1用于指示同步信号阵集合中对应的位置未发送同步信号块,二进制数值0用于指示同步信号阵集合中对应的位置发送同步信号块。
- 根据权利要求1至5任一项所述的方法,其特征在于,所述同步信号块的配置信息还包括时间周期指示信息,所述时间周期指示信息用于指示所述同步信号阵集合的时间周期。
- 一种下行同步方法,其特征在于,包括:接收发送和接收点TRP发送的同步信号块的配置信息,所述同步信号块的配置信息包括位置指示信息;根据所述位置指示信息确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求7所述的方法,其特征在于,所述接收发送和接收点TRP发送的同步信号块的配置信息,包括:接收所述TRP发送的无线资源控制RRC消息,所述无线资源控制RRC消息包括所述同步信号块的配置信息;或者,接收所述TRP发送的同步信号块,所述同步信号块包括同步信号和物理层广播信道PBCH,所述PBCH包括所述同步信号块的配置信息;或者,接收所述TRP发送的系统信息块,所述系统信息块包括所述同步信号块的配置信 息。
- 根据权利要求7或8所述的方法,其特征在于,所述位置指示信息包括位置指示数值;所述根据所述位置指示信息确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步,包括:根据所述位置指示数值和第一预设映射关系确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求9所述的方法,其特征在于,所述位置指示信息包括N位二进制数,N为同步信号阵集合中同步信号块的个数;所述根据所述位置指示信息确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步,包括:根据所述N位二进制数确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求7至10任一项所述的方法,其特征在于,所述同步信号块的配置信息还包括时间周期指示信息;所述方法还包括:根据所述时间周期指示信息和第二预设映射关系确定同步信号阵集合的时间周期。
- 根据权利要求7至11任一项所述的方法,其特征在于,所述方法还包括:在所述同步信号阵集合中的非同步信号块的位置接收数据或者控制信令。
- 一种下行同步方法,其特征在于,包括:生成同步信号块的配置信息,所述同步信号块的配置信息包括时间周期指示信息;向用户设备发送所述同步信号块的配置信息,所述时间周期指示信息用于指示同步信号阵集合的时间周期。
- 根据权利要求13所述的方法,其特征在于,所述时间周期指示信息包括时间周期指示值,所述时间周期指示值用于所述用户设备根据所述时间周期指示值和第二预设映射关系确定同步信号阵集合的时间周期。
- 一种下行同步方法,其特征在于,包括:接收发送和接收点TRP发送的同步信号块的配置信息,所述同步信号块的配置信息包括时间周期指示信息;根据所述时间周期指示信息确定同步信号阵集合的时间周期,并根据所述时间周期接收同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求15所述的方法,其特征在于,所述时间周期指示信息包括时间周期指示值;所述根据所述时间周期指示信息确定同步信号阵集合的时间周期,包括:根据所述时间周期指示值和第二预设映射关系确定同步信号阵集合的时间周期。
- 根据权利要求15或16所述的方法,其特征在于,所述方法还包括:在无线帧中的非同步信号块的位置接收数据或者控制信令。
- 一种发送和接收点,其特征在于,包括:处理模块,用于生成同步信号块的配置信息,所述同步信号块的配置信息包括位 置指示信息;发送模块,用于向用户设备发送所述同步信号块的配置信息,所述位置指示信息用于指示同步信号块在同步信号阵集合中的位置。
- 根据权利要求18所述的发送和接收点,其特征在于,所述发送模块具体用于:通过无线资源控制RRC消息向所述用户设备发送所述同步信号块的配置信息;或者,通过物理层广播信道向所述用户设备发送所述同步信号块的配置信息;或者,通过系统信息块向所述用户设备发送所述同步信号块的配置信息。
- 根据权利要求18或19所述的发送和接收点,其特征在于,所述位置指示信息包括位置指示数值,所述位置指示数值用于所述用户设备根据所述位置指示数值和第一预设映射关系确定同步信号块在同步信号阵集合中的位置。
- 根据权利要求18或19所述的发送和接收点,其特征在于,所述位置指示信息包括N位二进制数,N为同步信号阵集合中同步信号块的个数,N位二进制数的每一位分别与一个同步信号块对应,N位二进制数用于所述用户设备根据每一位二进制数值确定同步信号块在同步信号阵集合中的位置。
- 根据权利要求21所述的发送和接收点,其特征在于,二进制数值1用于指示同步信号阵集合中对应的位置发送同步信号块,二进制数值0用于指示同步信号阵集合中对应的位置未发送同步信号块;或者,二进制数值1用于指示同步信号阵集合中对应的位置未发送同步信号块,二进制数值0用于指示同步信号阵集合中对应的位置发送同步信号块。
- 根据权利要求18至22任一项所述的发送和接收点,其特征在于,所述同步信号块的配置信息还包括时间周期指示信息,所述时间周期指示信息用于指示所述同步信号阵集合的时间周期。
- 一种用户设备,其特征在于,包括:接收模块,用于接收发送和接收点TRP发送的同步信号块的配置信息,所述同步信号块的配置信息包括位置指示信息;处理模块,用于根据所述位置指示信息确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求24所述的用户设备,其特征在于,所述接收模块具体用于:接收所述TRP发送的无线资源控制RRC消息,所述无线资源控制RRC消息包括所述同步信号块的配置信息;或者,接收所述TRP发送的同步信号块,所述同步信号块包括同步信号和物理层广播信道PBCH,所述PBCH包括所述同步信号块的配置信息;或者,接收所述TRP发送的系统信息块,所述系统信息块包括所述同步信号块的配置信息。
- 根据权利要求24或25所述的用户设备,其特征在于,所述位置指示信息包括位置指示数值;所述处理模块具体用于:根据所述位置指示数值和第一预设映射关系确定同步信号块在同步信号阵集合中 的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求24或25所述的用户设备,其特征在于,所述位置指示信息包括N位二进制数,N为同步信号阵集合中同步信号块的个数;所述处理模块具体用于:根据所述N位二进制数确定同步信号块在同步信号阵集合中的位置,并在所述位置接收所述同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求24至27任一项所述的用户设备,其特征在于,所述同步信号块的配置信息还包括时间周期指示信息;所述处理模块还用于:根据所述时间周期指示信息和第二预设映射关系确定同步信号阵集合的时间周期。
- 根据权利要求24至28任一项所述的用户设备,其特征在于,所述接收模块还用于:在所述同步信号阵集合中的非同步信号块的位置接收数据或者控制信令。
- 一种发送和接收点,其特征在于,包括:处理模块,用于生成同步信号块的配置信息,所述同步信号块的配置信息包括时间周期指示信息;发送模块,用于向用户设备发送所述同步信号块的配置信息,所述时间周期指示信息用于指示同步信号阵集合的时间周期。
- 根据权利要求30所述的发送和接收点,其特征在于,所述时间周期指示信息包括时间周期指示值,所述时间周期指示值用于所述用户设备根据所述时间周期指示值和第二预设映射关系确定同步信号阵集合的时间周期。
- 一种用户设备,其特征在于,包括:接收模块,用于接收发送和接收点TRP发送的同步信号块的配置信息,所述同步信号块的配置信息包括时间周期指示信息;处理模块,用于根据所述时间周期指示信息确定同步信号阵集合的时间周期,并根据所述时间周期接收同步信号块,根据所述同步信号块进行下行同步。
- 根据权利要求32所述的用户设备,其特征在于,所述时间周期指示信息包括时间周期指示值;所述处理模块具体用于:根据所述时间周期指示值和第二预设映射关系确定同步信号阵集合的时间周期。
- 根据权利要求32或33所述的用户设备,其特征在于,所述接收模块还用于:在无线帧中的非同步信号块的位置接收数据或者控制信令。
- 一种发送和接收点,其特征在于,包括:处理器、存储器、总线和通信接口;所述存储器用于存储计算机执行指令,所述处理器与所述存储器通过该总线连接,当所述发送和接收点运行时,所述处理器执行所述存储器存储的所述计算机执行指令,以使所述发送和接收点执行如权利要求1至6任意一项、或13或14所述的下行同步方法。
- 一种用户设备,其特征在于,包括:处理器、存储器、总线和通信接口;所述存储器用于存储计算机执行指令,所述处理器与所述存储器通过该总线连接,当所 述用户设备运行时,所述处理器执行该存储器存储的所述计算机执行指令,以使所述用户设备执行如7至12或15至17任意一项所述的下行同步方法。
- 一种计算机可读存储介质,用于储存计算机软件指令,其特征在于,当其在计算机上运行时,使得计算机执行如权利要求1至17任意一项所述的下行同步方法。
- 一种计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行如权利要求1至17任意一项所述的下行同步方法。
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US11856538B2 (en) | 2018-11-15 | 2023-12-26 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for broadcasting configuration information of synchronizing signal block, and method and apparatus for receiving configuration information of synchronizing signal block |
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WO2016203290A1 (en) * | 2015-06-15 | 2016-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Variable synchronization block format |
US11212760B2 (en) * | 2015-09-24 | 2021-12-28 | Qualcomm Incorporated | Common synchronization channel design for narrowband communications |
WO2017078452A1 (ko) * | 2015-11-05 | 2017-05-11 | 엘지전자 주식회사 | V2x 통신에서의 동기화 신호 송신 방법 및 단말 |
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CN101883412A (zh) * | 2010-07-02 | 2010-11-10 | 北京交通大学 | Lte在高速移动条件下初始小区搜索方法 |
CN103096329A (zh) * | 2011-11-02 | 2013-05-08 | 中兴通讯股份有限公司 | 一种载波配置方法及系统 |
US20160262123A1 (en) * | 2015-03-06 | 2016-09-08 | Qualcomm Incorporated | Downlink synchronization channel for the narrow-band cellular iot |
CN106102136A (zh) * | 2016-08-23 | 2016-11-09 | 成都国恒空间技术工程有限公司 | 一种频分双工移动通信系统下行同步信号的搜索方法 |
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CN108632985A (zh) | 2018-10-09 |
BR112019019830A2 (pt) | 2020-04-22 |
EP3573387A4 (en) | 2020-03-04 |
CN108632985B (zh) | 2021-01-12 |
US20200015182A1 (en) | 2020-01-09 |
US11102745B2 (en) | 2021-08-24 |
EP3573387A1 (en) | 2019-11-27 |
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