WO2019047542A1 - Rssi测量方法及网络设备、终端设备 - Google Patents
Rssi测量方法及网络设备、终端设备 Download PDFInfo
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- WO2019047542A1 WO2019047542A1 PCT/CN2018/085163 CN2018085163W WO2019047542A1 WO 2019047542 A1 WO2019047542 A1 WO 2019047542A1 CN 2018085163 W CN2018085163 W CN 2018085163W WO 2019047542 A1 WO2019047542 A1 WO 2019047542A1
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- downlink symbol
- synchronization signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/328—Reference signal received power [RSRP]; Reference signal received quality [RSRQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
Definitions
- the present application relates to the field of communications technologies, and in particular, to a received signal strength indicator (RSSI) measurement method, a network device, and a terminal device.
- RSSI received signal strength indicator
- the new wireless communication system uses multi-beam transmission technology.
- NR defines a SS block burst set.
- the synchronization signal burst set includes one or more synchronization signal blocks (SS blocks), and the network device can separately transmit the synchronization signal blocks through different beams to implement beam scanning.
- the network device periodically transmits the sync signal block, and the sync signal burst set contains a maximum of L sync signal blocks (the actual transmitted sync signal block may be less than L) needs to be transmitted within a 5 millisecond time window.
- the reference signal received quality is an amount reflecting the reception quality of the reference signal of the terminal device.
- the terminal device obtains reference signal received power (RSRP) and RSSI by measurement, thereby obtaining RSRQ. Therefore, the measurement of RSSI is crucial for the acquisition of RSRQ.
- the terminal device obtains the RSSI by measuring all the symbols in the 5 millisecond time window including the burst set of the synchronization signal, but this brings about large measurement complexity and power overhead, especially in the synchronization signal.
- the block transmission period is small.
- the present application provides an RSSI measurement method, a network device, and a terminal device, to reduce the complexity and power overhead of the RSSI measurement while ensuring the accuracy of the RSSI measurement.
- An aspect of the present application provides an RSSI measurement method, the method comprising: a network device transmitting a synchronization signal block; the network device transmitting a measurement configuration message of a received signal strength indication RSSI, where the measurement configuration message includes an RSSI measurement
- the indication information of the time resource where the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located; wherein the first downlink symbol includes the a downlink symbol in which the synchronization signal block is located; the second downlink symbol includes at least one downlink symbol other than the first downlink symbol.
- the network device notifies the indication information of the time resource measured by the terminal device RSSI, so that the terminal device measures, on the downlink symbol and/or other downlink symbols where the synchronization signal block is located, for the transmission beam of each synchronization signal block.
- Receive signal power taking into account the accuracy of RSSI measurement, while reducing the complexity and power overhead of terminal equipment measurement.
- the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the actually transmitted synchronization signal block is located.
- the network device presets the location of the maximum number of synchronization signal blocks in the time slot, the synchronization signal block actually transmitted by the network device may be smaller than the maximum number.
- the time resource includes: the first downlink symbol and the second downlink symbol in one slot where the N synchronization signal blocks are located, where N is greater than or equal to A positive integer of 1.
- the RSSI measurement configuration is based on the time slots.
- the time resource includes: the first downlink symbol and the second downlink symbol in two time slots in which one synchronization signal block is located.
- one synchronization signal block can span the time slot, and therefore, the time resource of the corresponding RSSI measurement also needs to span the time slot.
- the time resource includes: the first downlink symbol where a synchronization signal block is located and a second downlink symbol corresponding to the synchronization signal block.
- the RSSI measurement configuration is based on the symbols.
- the first downlink symbol and the second downlink symbol are located in the same or different time slots.
- the second downlink symbols corresponding to each synchronization signal block are the same or different.
- the second downlink symbols corresponding to different sync signal blocks may be the same or different.
- the terminal device measures the first downlink symbol and/or the second downlink symbol. Receive signal power.
- the RSRP of the synchronization signal block needs to be greater than or equal to the set threshold.
- the measurement configuration message further includes indication information of a frequency resource of the RSSI measurement
- the method further includes: the terminal device calculating the RSRQ according to the following formula:
- N is the number of resource blocks included in the frequency resource measured by the RSSI
- a is a set coefficient
- RSRP is a reference signal received power.
- the RSRQ can be calculated, and the RSRQ is an amount reflecting the receiving quality of the terminal device.
- the measurement configuration message further includes the setting coefficient a.
- the set factor a can be carried in the measurement configuration message.
- the first downlink symbol and the second downlink symbol are both located in a synchronization signal burst set.
- the indication information of the frequency resource is used to indicate a frequency band that the RSSI needs to measure, and the frequency band includes one or several consecutive resource blocks.
- the indication information of the frequency resource includes a sequence number of the starting resource block and a quantity of the resource block.
- the measured frequency band includes at least a frequency band in which the synchronization signal block is located.
- the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a network device, a baseband single board, etc.).
- the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
- the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
- the memory is for coupling with a processor that holds the programs (instructions) and data necessary for the device.
- the communication device may further include a communication interface for supporting communication between the device and other network elements.
- the communication device may include a sending unit.
- the transmitting unit is configured to implement a transmitting function in the above method.
- the transmitting unit is configured to transmit a synchronization signal block and a measurement configuration message for transmitting a received signal strength indication RSSI.
- the transmitting unit may be an output unit such as an output circuit or a communication interface.
- the transmitting unit may be a transmitter (which may also be referred to as a transmitter).
- the principle and the beneficial effects of the device can be referred to the method embodiments of the foregoing possible terminal devices and the beneficial effects thereof. Therefore, the implementation of the device can refer to the implementation of the method, and the repetition is not Let me repeat.
- a further aspect of the present application provides an RSSI measurement method, the method comprising: receiving, by a terminal device, a measurement configuration message of a received signal strength indication RSSI, where the measurement configuration message includes indication information of a time resource of an RSSI measurement, where The time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located; the terminal device receives the synchronization signal block; and the terminal device measures the first downlink And a received signal power on the second downlink symbol; wherein the first downlink symbol includes a downlink symbol in which the synchronization signal block is located; and the second downlink symbol includes the first downlink symbol At least one downstream symbol other than the one.
- the received signal power is measured on the downlink symbol and/or other downlink symbols where the sync signal block is located for the transmit beam of each sync signal block, taking into account the accuracy of the RSSI measurement and reducing the accuracy.
- the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the actually transmitted synchronization signal block is located.
- the network device presets the location of the maximum number of synchronization signal blocks in the time slot, the synchronization signal block actually transmitted by the network device may be smaller than the maximum number.
- the time resource includes: the first downlink symbol and the second downlink symbol in one slot where the N synchronization signal blocks are located, where N is greater than or equal to A positive integer of 1.
- the RSSI measurement configuration is based on the time slots.
- the time resource includes: the first downlink symbol and the second downlink symbol in two time slots in which one synchronization signal block is located.
- one synchronization signal block can span the time slot, and therefore, the time resource of the corresponding RSSI measurement also needs to span the time slot.
- the time resource includes: the first downlink symbol where a synchronization signal block is located and a second downlink symbol corresponding to the synchronization signal block.
- the RSSI measurement configuration is based on the symbols.
- the first downlink symbol and the second downlink symbol are located in the same or different time slots.
- the second downlink symbols corresponding to each synchronization signal block are the same or different.
- the second downlink symbols corresponding to different sync signal blocks may be the same or different.
- the terminal device measures the first downlink symbol and/or the second downlink symbol. Receive signal power.
- the RSRP of the synchronization signal block needs to be greater than or equal to the set threshold.
- the measurement configuration message further includes indication information of a frequency resource of the RSSI measurement
- the method further includes: the terminal device calculating the RSRQ according to the following formula:
- N is the number of resource blocks included in the frequency resource measured by the RSSI
- a is a set coefficient
- RSRP is a reference signal received power.
- the RSRQ can be calculated, and the RSRQ is an amount reflecting the receiving quality of the terminal device.
- the measurement configuration message further includes the setting coefficient a.
- the set factor a can be carried in the measurement configuration message.
- the first downlink symbol and the second downlink symbol are both located in a synchronization signal burst set.
- the indication information of the frequency resource is used to indicate a frequency band that the RSSI needs to measure, and the frequency band includes one or several consecutive resource blocks.
- the frequency resource indication information includes a sequence number of the start resource block and a quantity of the resource block.
- the measured frequency band includes at least a frequency band in which the synchronization signal block is located.
- the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a terminal device or the like).
- the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
- the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
- the memory is for coupling with a processor that holds the necessary programs (instructions) and/or data for the device.
- the communication device may further include a communication interface for supporting communication between the device and other network elements.
- the communication device may include a receiving unit and a processing unit.
- the receiving unit and the transmitting unit are respectively used to implement the receiving and processing functions in the above method.
- the receiving unit is configured to receive a measurement configuration message of a signal strength indication RSSI and a receiving synchronization signal block
- the processing unit is configured to measure the receiving on the first downlink symbol and/or the second downlink symbol Signal power.
- the receiving unit may be an input unit such as an input circuit or a communication interface.
- the receiving unit may be a receiver (which may also be referred to as a receiver).
- the principle and the beneficial effects of the device can be referred to the method embodiments of the foregoing possible terminal devices and the beneficial effects thereof. Therefore, the implementation of the device can refer to the implementation of the method, and the repetition is not Let me repeat.
- a processor comprising: at least one circuit for controlling a transmitter to send a synchronization signal block; and a method for controlling the transmitter to transmit a received signal strength indication RSSI a configuration message, where the measurement configuration message includes indication information of a time resource of the RSSI measurement, where the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located; The first downlink symbol includes a downlink symbol in which the synchronization signal block is located, and the second downlink symbol includes at least one downlink symbol except the first downlink symbol.
- a processor comprising: at least one circuit, configured to control a receiver to receive a measurement configuration message of a received signal strength indication RSSI, where the measurement configuration message includes an RSSI measurement time
- the indication information of the resource where the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located; and controlling the receiver to receive the synchronization signal block; at least one a circuit, configured to measure received signal power on the first downlink symbol and/or the second downlink symbol, where the first downlink symbol includes a downlink symbol where the synchronization signal block is located;
- the two downlink symbols include at least one downlink symbol other than the first downlink symbol.
- a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.
- a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.
- FIG. 1 is a schematic diagram of a communication system according to an example of an embodiment of the present invention.
- FIG. 2 is a schematic diagram of a process interaction of an RSSI measurement method according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of a signal structure of a synchronization signal block
- 4 is a schematic diagram showing positions of L sync signal blocks in a 5 millisecond time window under different subcarrier intervals
- 5 is a schematic diagram of mapping of synchronization signal blocks in time slots under different subcarrier intervals
- FIG. 6 illustrates a schematic diagram of mapping of a synchronization signal block
- 7a to 7c respectively illustrate symbolic diagrams of required RSSI measurements for a sync signal block under different subcarrier intervals
- FIG. 8 illustrates a symbolic diagram of another RSSI required measurement corresponding to a sync signal block
- FIG. 9a to FIG. 9d respectively illustrate symbolic diagrams of required RSSI measurements corresponding to another synchronization signal block under different subcarrier intervals
- FIG. 10 is a schematic structural diagram of an exemplary terminal device
- FIG. 11 is a schematic structural diagram of an example network device.
- Figure 1 shows a schematic diagram of a communication system.
- the communication system may include at least one network device 100 (only one shown) and one or more terminal devices 200 connected to the network device 100.
- Network device 100 can be a device that can communicate with terminal device 200.
- the network device 100 may be any device having a wireless transceiving function. Including but not limited to: a base station (eg, a base station NodeB, an evolved base station eNodeB, a base station in a fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system , wireless relay node, wireless backhaul node, etc.
- the network device 100 may also be a wireless controller in a cloud radio access network (CRAN) scenario.
- CRAN cloud radio access network
- the network device 100 may also be a network device in a 5G network or a network device in a future evolved network; it may also be a wearable device or an in-vehicle device or the like.
- the network device 100 may also be a small station, a transmission reference point (TRP) or the like. Of course, no application is not limited to this.
- the terminal device 200 is a device with wireless transceiving function that can be deployed on land, including indoor or outdoor, handheld, wearable or on-board; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (for example, an airplane, Balloons and satellites, etc.).
- the terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and industrial control ( Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety A wireless terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
- a terminal device may also be referred to as a user equipment (UE), an access terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, Wireless communication device, UE proxy or UE device, and the like.
- UE user equipment
- system and “network” in the embodiments of the present invention may be used interchangeably.
- Multiple means two or more, and in view of this, "a plurality” may also be understood as “at least two” in the embodiment of the present invention.
- the character "/” unless otherwise specified, generally indicates that the contextual object is an "or" relationship.
- Embodiments of the present invention provide an RSSI measurement method and apparatus, by using a downlink beam symbol and/or other downlinks of a synchronization signal block (which may be referred to as an SS block or an SS/PBCH block) for each transmission signal block.
- the received signal power is measured on the symbol, taking into account the accuracy of the RSSI measurement, while reducing the complexity and power overhead of the terminal device measurement.
- FIG. 2 is a schematic diagram of a process interaction of an RSSI measurement method according to an embodiment of the present invention, where the method may include the following steps:
- the network device sends a synchronization signal block.
- the terminal device receives the synchronization signal block.
- the network device sends a measurement configuration message of the RSSI.
- the terminal device receives the measurement configuration message of the RSSI.
- the measurement configuration message includes indication information of a time resource of the RSSI measurement, where the time resource includes: a first downlink symbol and a second downlink symbol in a time slot in which the synchronization signal block is located, where the first downlink symbol includes a synchronization signal a downlink symbol in which the block is located; the second downlink symbol includes at least one downlink symbol other than the first downlink symbol.
- the terminal device measures received signal power on the first downlink symbol and/or the second downlink symbol.
- the sequence in which the network device sends the synchronization signal block and the measurement configuration message for sending the RSSI is not limited, that is, the synchronization signal block is sent first, and the RSSI measurement configuration message is sent; or the RSSI measurement configuration message is sent first, and then the synchronization signal is sent. Block; or the synchronization signal block and the RSSI measurement configuration message are sent simultaneously.
- FIG. 3 is a schematic diagram showing the signal structure of a synchronization signal block, which includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH).
- PSS primary synchronization signal
- SSS secondary synchronization signal
- PBCH physical broadcast channel
- the main function of PSS and SSS is to help the terminal device identify the cell and synchronize with the cell.
- the PBCH contains the most basic system information, such as system frame number and intraframe timing information.
- the successful reception of the synchronization signal block by the terminal device is a prerequisite for its access to the cell.
- OFDM orthogonal frequency division multiplexing
- SCS subcarrier spaces
- the time resource configured by the network device to the RSSI of the terminal device includes: a first downlink symbol and a second downlink symbol in a time slot in which the synchronization signal block is located.
- the first downlink symbol includes a downlink symbol in which the synchronization signal block itself is located, and the second downlink symbol includes at least one downlink symbol other than the first downlink symbol.
- the network device transmits a synchronization signal block through a beam.
- the received signal power is thus measured on the downlink symbols and/or several other downstream symbols on which the sync signal block is located for the transmit beam of each sync signal block.
- the terminal device does not always need to measure all symbols within the 5 millisecond time window containing the burst set of synchronization signals to obtain the RSSI.
- the RSSI is obtained by the terminal device by measuring the total received power on certain symbols and then averaging the symbols.
- the RSSI is obtained by the terminal device by measuring the received signal power on the first downlink symbol and the second downlink symbol in the time slot in which the synchronization signal block is located.
- the sync signal block herein refers to a maximum of L sync signal blocks in a burst of synchronization signals.
- the terminal device obtains the RSSI by measuring the received signal power on the first downlink symbol and the second downlink symbol in the time slot in which all the synchronization signal blocks are located.
- the network device indicates the time resource measured by the terminal device RSSI through the measurement configuration message of the RSSI, that is, the measurement configuration message includes indication information of the time resource measured by the RSSI. Further, the measurement configuration message may further include indication information of a frequency resource of the RSSI measurement.
- the indication information of the frequency resource is used to indicate the frequency band that the RSSI needs to measure, and the frequency band includes one or several consecutive resource blocks. Specifically, the indication information of the frequency resource includes a sequence number of the starting resource block and a quantity of the resource block.
- the measured frequency band includes at least the frequency band in which the sync signal block is located, and each sync signal block may be the same or different.
- the measurement configuration message may be a system message or a broadcast message. For the terminal device in the connected state, the measurement configuration message may also be radio resource control (RRC) signaling.
- RRC radio resource control
- the position of the L sync signal blocks in the slot is preset in advance for any one of the SCSs. That is, the time resource measured by the RSSI includes the first downlink symbol and/or the second downlink symbol in the time slot in which the actually transmitted synchronization signal block is located. Further, the first downlink symbol and the second downlink symbol are both located in a synchronization signal burst set.
- FIG. 6 illustrates a mapping diagram of a sync signal block.
- the terminal device When measuring the RSSI, the terminal device only needs to measure all the downlink symbols of the time slot in which the first four synchronization signal blocks are located (that is, the downlink symbols of slot 1 and slot 2). The same is true when SCS and L are other situations.
- the terminal device can just measure the M sync signal blocks Corresponding RSSI. That is, the RSSI corresponding to each synchronization signal block is obtained by measuring all downlink symbols in the time slot in which the synchronization signal block is located. The terminal device can measure only all the downlink symbols in the time slot in which the actually detected synchronization signal block is located. For those sync signal blocks that are not transmitted, the terminal device does not need to measure all the downlink symbols in the time slot in which it is located.
- a slot-based RSSI measurement configuration is considered.
- the time resource measured by the RSSI includes: the first downlink symbol and the second downlink symbol in one slot where the N synchronization signal blocks are located, where N is a positive integer greater than or equal to 1.
- FIG. 7a shows a symbolic representation of the required RSSI measurement for a sync block.
- the corresponding measured symbol of the RSSI is the symbol in the dotted line box (assuming that the last two symbols of the time slot are uplink symbols).
- the RSSI corresponding to the sync signal block 1 and the sync signal block 2 is obtained by measuring the received signal power on the symbols in the broken line frame.
- the RSSI corresponding to the sync signal block 1 and the sync signal block 2 are the same.
- the RSSI values corresponding to the respective synchronization signal blocks may be respectively sent to the network device, or the average value of the RSSI corresponding to each synchronization signal block may also be That is, the RSSI corresponding to the cell is sent to the network device.
- Figure 7b shows a symbolic representation of the RSSI required measurements for the sync block in the two mapping modes.
- the corresponding RSSI required measurement symbol is the symbol in the first dotted line frame; for the synchronization signal block 3 or 4, the corresponding RSSI required measurement symbol is the second dotted frame
- the symbols inside (assuming the last 2 symbols of each time slot are the up symbols). Reference may be made to the description of FIG. 7a, and details are not described herein again.
- Figure 7c shows a symbolic representation of the required RSSI measurement for another sync signal block.
- the corresponding RSSI required measurement symbol is the symbol in the first dotted line frame; for the synchronization signal block 3 or 4, the corresponding RSSI required measurement symbol is the second dotted frame
- the symbols inside (assuming the last 2 symbols of each time slot are the up symbols). Reference may be made to the description of FIG. 7a, and details are not described herein again.
- the time resource for performing the RSSI measurement includes: the first downlink symbol and the second downlink symbol in two slots in which one synchronization signal block is located.
- SCS 240 kHz
- Figure 8 shows a symbolic representation of the RSSI required measurement for another sync signal block.
- the corresponding RSSI required measurement symbol is the symbol in the first dotted line frame; for the synchronization signal block 2, because of its cross-slot, the corresponding RSSI required measurement symbol is the first sum.
- the symbols in the two dashed boxes; for the sync block 3 or 4, the corresponding RSSI required symbols are the symbols in the second dashed box; for the sync block 5, 6, 7, 8 are similar ( Assume that the last two symbols of the second and fourth time slots in the figure are the up symbols).
- the terminal device obtains the RSSI corresponding to the synchronization signal block 1 by measuring the received signal power on the symbol in the first broken line frame; and obtains the synchronization signal block by measuring the received signal power on the symbols in the first and second broken line frames. 2 corresponding RSSI; by measuring the received signal power on the symbol in the second dotted frame, respectively obtaining the RSSI corresponding to the synchronization signal blocks 3, 4, where the RSSI corresponding to the synchronization signal blocks 3, 4 is the same; and so on.
- a symbol based RSSI measurement configuration is considered.
- the time resource for performing the RSSI measurement includes: the first downlink symbol where the synchronization signal block is located and the second downlink symbol corresponding to the synchronization signal block.
- the symbol to be measured by the RSSI corresponding to each synchronization signal block includes not only the symbol in which the synchronization signal block is located, but also one or more symbols except the synchronization signal block, and the one or more synchronization signal blocks.
- the outer symbols can be configured separately for each sync block.
- Figure 9a shows a symbolic representation of the required RSSI measurement for another sync block.
- the corresponding RSSI required measurement symbols include not only the 4 symbols in which the synchronization signal block 1 is located, but also the symbols in the first broken line frame; for the synchronization signal block 2, the corresponding RSSI is required.
- the measured symbols include not only the four symbols in which the sync signal block 2 is located, but also the symbols in the second dashed box (assuming that the last two symbols of the time slot are the up symbols).
- the terminal device obtains the RSSI of the synchronization signal block 1 by measuring the symbol corresponding to the synchronization signal block 1 and the received signal power on the symbol in the first broken line frame; by measuring the symbol corresponding to the synchronization signal block 2 and the second dotted line
- the received signal power on the symbol gives the RSSI of sync block 2.
- the RSSI values corresponding to the respective synchronization signal blocks may be respectively sent to the network device, or the average value of the RSSI corresponding to each synchronization signal block may also be That is, the RSSI corresponding to the cell is sent to the network device.
- Figure 9b shows a symbolic representation of the required RSSI measurement for another sync block.
- the symbols required for the RSSI corresponding to the synchronization signal block 1 or 2 include not only the 4 symbols in which the synchronization signal block is located, but also the symbols in the first dotted frame; the RSSI corresponding to the synchronization signal block 3
- the symbols to be measured include not only the 4 symbols in which the sync signal block is located, but also the symbols in the second dashed box;
- the RSSI corresponding to the sync signal block 4 needs to include not only the 4 symbols in which the sync signal block is located, It also includes the symbols in the third dashed box.
- the same is true for the second mapping mode. (Assume that the last 2 symbols of each time slot are upstream symbols). Reference may be made to the description of FIG. 9a, and details are not described herein again.
- Figure 9c shows a symbolic representation of the required RSSI measurement for another sync signal block.
- the symbols required for the corresponding RSSI measurement include not only the four symbols in which the synchronization signal block 1 is located, but also the symbols in the first dotted line frame.
- the symbols required for the corresponding RSSI measurement include not only the four symbols in which the synchronization signal block 2 is located, but also the symbols in the first broken line frame. That is, the second downlink symbols corresponding to the synchronization signal blocks 1 and 2 are the same.
- the corresponding RSSI required measurement symbols include not only the 4 symbols in which the synchronization signal block 3 is located but also the symbols in the second dotted frame.
- the symbols required for the corresponding RSSI measurement include not only the four symbols in which the sync signal block 4 is located, but also the symbols in the third dotted line frame. Assume that the last 2 symbols of each time slot are upstream symbols.
- the second downlink symbols corresponding to the sync signal blocks 3, 4 are different. Reference may be made to the description of FIG. 9a, and details are not described herein again.
- Figure 9d shows a symbolic representation of the required RSSI measurement for another sync signal block. It is assumed that the last 4 symbols of the 2nd and 4th time slots are uplink symbols. Similarly, for the sync signal blocks 1, 2, 3, 4, the corresponding RSSI required symbols include not only the 4 symbols in which the sync signal blocks 1, 2, 3, 4 are respectively located, but also the first dashed box. Symbol inside. For the sync signal blocks 5, 6, the symbols required for the corresponding RSSI measurements include not only the four symbols in which the sync signal blocks 5, 6 are respectively located, but also the symbols in the second dashed box.
- the corresponding RSSI required symbols include not only the four symbols in which the sync signal blocks 7, 8 are respectively located, but also the symbols in the third dashed box. Reference may be made to the description of FIG. 9a, and details are not described herein again.
- the first downlink symbol and the second downlink symbol are located in the same or different time slots.
- the second downlink symbols corresponding to each sync signal block are the same or different. Specifically, it may be pre-configured by the network device.
- the terminal device can calculate the reference signal received quality (RSRQ) according to the following formula:
- N is the number of resource blocks included in the frequency resource measured by the RSSI
- a is a predetermined coefficient
- a is a value used to adjust the relative weights of the RSRP and the RSSI.
- the value of a can be 1, or it can be configured by the network device to other values. a can be carried in the measurement configuration message.
- the reference signal received power is an amount that reflects the received power of the reference signal of the terminal device.
- the terminal device obtains the RSRP by measuring the power of the SSS in the sync signal block, and the terminal device can select whether to obtain the RSRP according to the demodulation reference signal (DMRS) in the PBCH.
- DMRS demodulation reference signal
- RSRP is the average value of the measured first uplink symbol and/or the second downlink symbol of the second downlink symbol
- the RSSI is the measured maximum of L synchronization signals. The average of the received signal power of the first downlink symbol and/or the second downlink symbol in which the block is located.
- the terminal device may remove the RSSI obtained by measuring the downlink symbol of the time slot in which the synchronization signal block is located or directly ignore the downlink of the time slot in which the synchronization signal block is located. symbol.
- the terminal device measures the received signal power on the first downlink symbol and/or the second downlink symbol; in other words And the terminal device measures the first downlink symbol corresponding to the synchronization signal block whose RSRP is greater than or equal to the first threshold and/or the received signal power on the second downlink symbol.
- the first threshold may be a default value or configured by a network device.
- RSSI measurement configuration message can also indicate other RSSI measurement configurations.
- the network device may notify the terminal device by using the above-mentioned RSSI measurement configuration mode by using a system message or a broadcast message.
- the network device can notify the terminal device by using RRC signaling.
- the network device may configure an RSSI measurement time window within a 5 millisecond time window in which the synchronization signal burst set is located, the starting point of the time window may be actual The first symbol of the time slot in which the first synchronization signal block is transmitted is the first symbol of the first synchronization signal block actually transmitted, and the length of the time window may be a preset default value or by the network.
- the device is configured.
- the starting point of the time window may be the first symbol of the time slot in which the first synchronization signal block is located in the synchronization signal burst set or the first symbol of the first synchronization signal block actually transmitted, and the length of the time window It can be a preset default or configured by a network device.
- the network device can also directly indicate that the RSSI needs to measure one or more time slots within a 5 millisecond time window.
- An RSSI measurement method by measuring a received signal power on a downlink symbol and/or other downlink symbols where a synchronization signal block is located, for a transmission beam of each synchronization signal block, taking into account RSSI measurement Accuracy, while reducing the complexity and power overhead of terminal equipment measurements.
- the embodiment of the present application may perform the division of the function module on the terminal device or the network device according to the foregoing method.
- each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner. The following is an example of dividing each functional module by using corresponding functions.
- FIG. 10 shows a simplified schematic diagram of the structure of a terminal device.
- the terminal device uses a mobile phone as an example.
- the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
- the processor is mainly used for processing communication protocols and communication data, and controlling terminal devices, executing software programs, processing data of software programs, and the like.
- Memory is primarily used to store software programs and data.
- the RF circuit is mainly used for the conversion of the baseband signal and the RF signal and the processing of the RF signal.
- the antenna is mainly used to transmit and receive RF signals in the form of electromagnetic waves.
- Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input and output devices.
- the processor When the data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
- the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
- the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
- the memory may also be referred to as a storage medium or a storage device or the like.
- the memory may be independent of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
- an antenna and a radio frequency circuit having a transceiving function can be regarded as a receiving unit and a transmitting unit (also collectively referred to as a transceiving unit) of the terminal device, and a processor having a processing function is regarded as a processing unit of the terminal device.
- the terminal device includes a receiving unit 1001, a processing unit 1002, and a transmitting unit 1003.
- the receiving unit 1001 may also be referred to as a receiver, a receiver, a receiving circuit, etc.
- the transmitting unit 1003 may also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, or the like.
- the processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.
- the receiving unit 1001 is configured to perform steps S201, S202 of the embodiment shown in FIG. 2; the processing unit 1002 is configured to perform step S203 of the embodiment shown in FIG. 2.
- the processing unit 1002 is further configured to perform the step of calculating the RSRQ.
- FIG 11 shows a schematic diagram of a simplified network device structure.
- the network device includes a radio frequency signal transceiving and converting portion and a portion 1102.
- the radio frequency signal transceiving and converting portion further includes a receiving unit 1101 portion and a transmitting unit 1103 portion (also collectively referred to as a transceiving unit).
- the RF signal transmission and reception and conversion part is mainly used for transmitting and receiving RF signals and converting RF signals and baseband signals; the 1102 part is mainly used for baseband processing and control of network equipment.
- the receiving unit 1101 may also be referred to as a receiver, a receiver, a receiving circuit, etc.
- the transmitting unit 1103 may also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, or the like.
- the portion 1102 is typically a control center for a network device, and may generally be referred to as a processing unit for controlling the network device to perform the steps performed by the second communication device of FIG. 5 or FIG. 9 above. For details, please refer to the description of the relevant part above.
- the 1102 portion may include one or more boards, each of which may include one or more processors and one or more memories for reading and executing programs in the memory to implement baseband processing functions and to network devices control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards share one or more processors, or multiple boards share one or more memories, or multiple boards share one or more processes at the same time. Device.
- the transmitting unit 1103 is configured to perform the steps of S201 and S202 in FIG.
- SoC system-on-chip
- all or part of the functions of the 1102 part and the 1101 part may be implemented by the SoC technology, for example, by A base station function chip is implemented.
- the base station function chip integrates a processor, a memory, an antenna interface and the like.
- the program of the base station related function is stored in the memory, and the program is executed by the processor to implement the related functions of the base station.
- the base station function chip can also read the memory external to the chip to implement related functions of the base station.
- the embodiment of the invention further provides a processor, the processor comprising: at least one circuit for controlling a transmitter to send a synchronization signal block; and a measurement configuration message for controlling the transmitter to send a received signal strength indication RSSI
- the measurement configuration message includes indication information of a time resource of the RSSI measurement, where the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located;
- the first downlink symbol includes a downlink symbol in which the synchronization signal block is located; and the second downlink symbol includes at least one downlink symbol other than the first downlink symbol.
- the embodiment of the present invention further provides a processor, where the processor includes: at least one circuit, configured to control, by the receiver, a measurement configuration message that receives a received signal strength indication RSSI, where the measurement configuration message includes a time resource of the RSSI measurement. Instructing information, wherein the time resource includes: a first downlink symbol and/or a second downlink symbol in a time slot in which the synchronization signal block is located; and controlling the receiver to receive the synchronization signal block; at least one circuit, And configured to measure received signal power on the first downlink symbol and/or the second downlink symbol, where the first downlink symbol includes a downlink symbol where the synchronization signal block is located; and the second downlink The symbol includes at least one downlink symbol other than the first downlink symbol.
- the embodiment of the present invention further provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the methods described in the above aspects.
- the embodiment of the invention further provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method described in the above aspects.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software it may be implemented in whole or in part in the form of a computer program product.
- the computer program product includes one or more computer instructions.
- the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in or transmitted by a computer readable storage medium.
- the computer instructions may be from a website site, computer, server or data center via a wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission.
- 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 digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)). )Wait.
- the foregoing storage medium includes: a read-only memory (ROM) or a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code.
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Abstract
Description
Claims (31)
- 一种RSSI测量方法,其特征在于,所述方法包括:网络设备发送同步信号块;所述网络设备发送接收信号强度指示RSSI的测量配置消息,所述测量配置消息包括RSSI测量的时间资源的指示信息,其中,所述时间资源包括:所述同步信号块所在的时隙中的第一下行符号和/或第二下行符号;其中,所述第一下行符号包括所述同步信号块所在的下行符号;所述第二下行符号包括所述第一下行符号以外的至少一个下行符号。
- 一种RSSI测量方法,其特征在于,所述方法包括:终端设备接收接收信号强度指示RSSI的测量配置消息,所述测量配置消息包括RSSI测量的时间资源的指示信息,其中,所述时间资源包括:同步信号块所在的时隙中的第一下行符号和/或第二下行符号;所述终端设备接收所述同步信号块;所述终端设备测量所述第一下行符号和/或所述第二下行符号上的接收信号功率;其中,所述第一下行符号包括所述同步信号块所在的下行符号;所述第二下行符号包括所述第一下行符号以外的至少一个下行符号。
- 如权利要求1或2所述的方法,其特征在于,所述时间资源包括:实际发送的同步信号块所在的时隙中的第一下行符号和/或第二下行符号。
- 如权利要求1~3任一项所述的方法,其特征在于,所述时间资源包括:N个同步信号块所在的一个时隙中的所述第一下行符号和所述第二下行符号,其中,N为大于或等于1的正整数。
- 如权利要求1~3任一项所述的方法,其特征在于,所述时间资源包括:一个同步信号块所在的两个时隙中的所述第一下行符号和所述第二下行符号。
- 如权利要求1~3任一项所述的方法,其特征在于,所述时间资源包括:一个同步信号块所在的所述第一下行符号和所述同步信号块对应的第二下行符号。
- 如权利要求1、2、3、5或6任一项所述的方法,其特征在于,所述第一下行符号与所述第二下行符号位于相同或不同的时隙。
- 如权利要求1~7任一项所述的方法,其特征在于,每个同步信号块对应的所述第二下行符号相同或不同。
- 如权利要求1~8任一项所述的方法,其特征在于,若同步信号块的参考信号接收功率RSRP大于或等于第一阈值,则所述终端设备测量所述第一下行符号和/或所述第二下行符号上的接收信号功率。
- 如权利要求10所述的方法,其特征在于,所述测量配置消息还包括所述设定系数a。
- 如权利要求1~11任一项所述的方法,其特征在于,所述第一下行符号与所述第二下行符号均位于一个同步信号突发集中。
- 一种网络设备,其特征在于,包括:发送单元,用于发送同步信号块;所述发送单元还用于发送接收信号强度指示RSSI的测量配置消息,所述测量配置消息包括RSSI测量的时间资源的指示信息,其中,所述时间资源包括:所述同步信号块所在的时隙中的第一下行符号和/或第二下行符号;其中,所述第一下行符号包括所述同步信号块所在的下行符号;所述第二下行符号包括所述第一下行符号以外的至少一个下行符号。
- 如权利要求13所述的网络设备,其特征在于,所述时间资源包括:实际发送的同步信号块所在的时隙中的第一下行符号和/或第二下行符号。
- 如权利要求13或14所述的网络设备,其特征在于,所述时间资源包括:N个同步信号块所在的一个时隙中的所述第一下行符号和所述第二下行符号,其中,N为大于或等于1的正整数。
- 如权利要求13或14所述的网络设备,其特征在于,所述时间资源包括:一个同步信号块所在的两个时隙中的所述第一下行符号和所述第二下行符号。
- 如权利要求13或14所述的网络设备,其特征在于,所述时间资源包括:一个同步信号块所在的所述第一下行符号和所述同步信号块对应的第二下行符号。
- 如权利要求13、14、16或17任一项所述的网络设备,其特征在于,所述第一下行符号与所述第二下行符号位于相同或不同的时隙。
- 如权利要求13~18任一项所述的网络设备,其特征在于,每个同步信号块对应的所述第二下行符号相同或不同。
- 一种终端设备,其特征在于,包括:接收单元,用于接收接收信号强度指示RSSI的测量配置消息,所述测量配置消息包括RSSI测量的时间资源的指示信息,其中,所述时间资源包括:同步信号块所在的时隙中的第一下行符号和/或第二下行符号;所述接收单元还用于接收所述同步信号块;处理单元,用于测量所述第一下行符号和/或所述第二下行符号上的接收信号功率;其中,所述第一下行符号包括所述同步信号块所在的下行符号;所述第二下行符号包括所述第一下行符号以外的至少一个下行符号。
- 如权利要求20所述的终端设备,其特征在于,所述时间资源包括:N个同步信号块所在的一个时隙中的所述第一下行符号和所述第二下行符号,其中,N为大于或等于1的正整数。
- 如权利要求20所述的终端设备,其特征在于,所述时间资源包括:一个同步信号块所在的两个时隙中的所述第一下行符号和所述第二下行符号。
- 如权利要求20所述的终端设备,其特征在于,所述时间资源包括:一个同步信号块所在的所述第一下行符号和所述同步信号块对应的第二下行符号。
- 如权利要求20、22或23任一项所述的终端设备,其特征在于,所述第一下行符号与所述第二下行符号位于相同或不同的时隙。
- 如权利要求20~24任一项所述的终端设备,其特征在于,每个同步信号块对应的所述第二下行符号相同或不同。
- 如权利要求20~25任一项所述的终端设备,其特征在于,若同步信号块的参考信号接收功率RSRP大于或等于第一阈值,则所述终端设备测量所述第一下行符号和/或所述第二下行符号上的接收信号功率。
- 如权利要求27所述的终端设备,其特征在于,所述测量配置消息还包括所述设定系数a。
- 如权利要求20~28任一项所述的终端设备,其特征在于,所述第一下行符号与所述第二下行符号均位于一个同步信号突发集中。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当所述指令在计算机上运行时,使得所述计算机执行所述权利要求1、3~8或12任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当所述指令在计算机上运行时,使得所述计算机执行所述权利要求2~12任一项所述的方法。
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| JP2020533866A (ja) | 2020-11-19 |
| CN109039493B (zh) | 2020-06-16 |
| JP6994105B2 (ja) | 2022-01-14 |
| EP3480974B1 (en) | 2021-01-20 |
| US10972199B2 (en) | 2021-04-06 |
| CN109474357A (zh) | 2019-03-15 |
| CN109039493A (zh) | 2018-12-18 |
| EP3480974A4 (en) | 2019-05-08 |
| CN109474357B (zh) | 2024-03-19 |
| US20190081714A1 (en) | 2019-03-14 |
| EP3480974A1 (en) | 2019-05-08 |
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