WO2023066028A1 - 一种通信方法及装置 - Google Patents
一种通信方法及装置 Download PDFInfo
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- WO2023066028A1 WO2023066028A1 PCT/CN2022/123808 CN2022123808W WO2023066028A1 WO 2023066028 A1 WO2023066028 A1 WO 2023066028A1 CN 2022123808 W CN2022123808 W CN 2022123808W WO 2023066028 A1 WO2023066028 A1 WO 2023066028A1
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- H04W74/08—Non-scheduled access, e.g. ALOHA
Definitions
- This application relates to the field of communications. In particular, it relates to a communication method and device.
- an independent random access channel (random access channel, RACH) can be configured for the types of equipment/services. )resource.
- the RACH resources include at least one random access opportunity (RACH occasion, RO).
- the terminal device can perform random access on the corresponding RO according to its own device type/service type.
- the values of the random access radio network temporary identifier (RA-RNTI) calculated according to the frequency domain numbers of different ROs may be the same, so that terminal devices cannot distinguish the corresponding RACH resources, and random access radio network temporary identifiers (RA-RNTI) may easily occur. Incoming conflicts cause large access delays.
- Embodiments of the present application provide a communication method and device, which can solve a conflict problem in a random access process and improve access efficiency.
- a communication method may include: a terminal device acquires a target value of a first parameter, where the target value of the first parameter is one of candidate values of the first parameter, and the first parameter A candidate value of a parameter corresponds to a device characteristic, the device characteristic includes the type of the device, and/or the characteristics supported by the device, the terminal device is a terminal device to be randomly accessed to the network device; the terminal device is randomly accessed according to The wireless network temporary identifier RA-RNTI receives a first message, the RA-RNTI is determined according to the first parameter, and the first message includes scheduling information of the random access response message or the random access response message.
- the method determines the parameter value corresponding to the device characteristic through the corresponding relationship, and can ensure that the RA-RNTI value corresponding to different device characteristics is different, so that the scheduling information of the random access response message scrambled through the RA-RNTI or the random access response message It can be distinguished, and the RACH resources acquired by the terminal equipment are independent, which avoids conflicts that may be caused by the inability of the terminal equipment to distinguish RACH resources during the random access process, improves the efficiency of random access, and reduces the delay of random access.
- the target value of the first parameter is determined according to the type of the terminal device and/or the characteristics supported by the terminal device, and a corresponding relationship, the corresponding relationship It includes the relationship between the device characteristic and the candidate value of the first parameter.
- the corresponding relationship may be fixed or flexibly configured, which is not limited in this application.
- the number of device characteristics is N
- the candidate value range of the first parameter corresponding to the first communication characteristic is 1 to N, where N is a positive integer
- the candidate value of the first parameter is a positive integer
- the first communication characteristic includes at least one device characteristic
- the RA-RNTI may be determined according to the first parameter and the second parameter.
- the second parameter may be an uplink carrier identifier, which may be used to indicate whether the terminal device supports or uses a supplementary uplink (SUL, supplementary uplink).
- the sending uplink carrier identifier can have values of 0 and 1, where the terminal device does not support, or, when the auxiliary uplink is not used in this uplink transmission (that is, the normal uplink is used), the uplink The carrier identifier can be 0; the terminal device supports it, or when the auxiliary uplink is used in the uplink transmission, the uplink carrier identifier can be 1.
- the corresponding uplink carrier when the terminal device uses SUL uplink transmission, the corresponding uplink carrier may be a SUL carrier, and when the terminal device uses normal UL uplink transmission, the corresponding uplink carrier may be a normal UL carrier.
- the first parameter can be flexibly configured according to device characteristics, and the value of the second parameter can be determined according to whether auxiliary uplink is supported.
- the RA-RNTI may be based on the first parameter, the second parameter, the identifier of the first OFDM symbol of the RO, the RO The identification of the first time slot and the index of the RO in the frequency domain are determined.
- the RA-RNTI may be based on the first parameter, the identifier of the first OFDM symbol of the RO, the first It is determined by the identifier of the timeslot, the index of the RO in the frequency domain, and the identifier of the uplink carrier that transmits the pilot sequence.
- the value of the uplink carrier identifier for sending the pilot sequence may be 0 or 1, and the value of the uplink carrier identifier for sending the pilot sequence may correspond to the type of the uplink carrier. For example, if the UL carrier is a normal uplink (normal UL, NUL) carrier, then ul_carrier_id is 0, and if the UL carrier is a supplementary uplink (supplementary uplink, SUL) carrier, then ul_carrier_id is 1.
- the first parameter can be flexibly configured according to device characteristics.
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the RO The index in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- f_id is the index of the RO in the frequency domain
- ul_carrier_id 0 or 1
- the features supported by the device include supporting small data transmission (small data transmission, SDT), supporting slicing, and supporting coverage enhancement (coverage enhancement, CE).
- a communication method may include: a network device sending a target value of a first parameter, where the target value of the first parameter is one of candidate values of the first parameter, and the first parameter A candidate value of a parameter corresponds to a device characteristic, the device characteristic includes the type of the device, and/or the characteristics supported by the device, the terminal device is a terminal device to be randomly connected to the network device; the network device passes the RA-RNTI Scrambling a first message, where the first message includes scheduling information of a random access response message or a random access response message, and the RA-RNTI is determined according to the first parameter; the network device sends the first message.
- the target value of the first parameter is determined according to the type of the terminal device and/or the characteristics supported by the terminal device, and a corresponding relationship, the corresponding relationship It includes the relationship between the device characteristic and the candidate value of the first parameter.
- the number of device characteristics is N
- the candidate value range of the first parameter corresponding to the first communication characteristic is 1 to N, where N is a positive integer
- the candidate value of the first parameter is a positive integer
- the first communication characteristic includes at least one device characteristic
- the RA-RNTI may be determined according to the first parameter and the second parameter.
- the second parameter may be an uplink carrier identifier, which may be used to indicate whether the terminal device supports or uses a supplementary uplink (SUL, supplementary uplink).
- the sending uplink carrier identifier can have values of 0 and 1, where the terminal device does not support, or, when the auxiliary uplink is not used in this uplink transmission (that is, the normal uplink is used), the uplink The carrier identifier can be 0; the terminal device supports it, or when the auxiliary uplink is used in the uplink transmission, the uplink carrier identifier can be 1.
- the corresponding uplink carrier when the terminal device uses SUL uplink transmission, the corresponding uplink carrier may be a SUL carrier, and when the terminal device uses normal UL uplink transmission, the corresponding uplink carrier may be a normal UL carrier.
- the first parameter can be flexibly configured according to device characteristics, and the value of the second parameter can be determined according to whether auxiliary uplink is supported.
- the RA-RNTI may be based on the first parameter, the second parameter, the identifier of the first OFDM symbol of the RO, the RO The identification of the first time slot and the index of the RO in the frequency domain are determined.
- the RA-RNTI is based on the first parameter, the identifier of the first OFDM symbol of the RO, the first The ID of the time slot, the index of the RO in the frequency domain, and the ID of the uplink carrier that sends the pilot sequence are determined.
- the value of the uplink carrier identifier for sending the pilot sequence may be 0 or 1, and the value of the uplink carrier identifier for sending the pilot sequence may correspond to the type of the uplink carrier. For example, if the UL carrier is a normal uplink (normal UL, NUL) carrier, then ul_carrier_id is 0, and if the UL carrier is a supplementary uplink (supplementary uplink, SUL) carrier, then ul_carrier_id is 1.
- the first parameter can be flexibly configured according to device characteristics.
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the RO The index in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- f_id is the index of the RO in the frequency domain
- ul_carrier_id 0 or 1
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the The index of the RO in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- ul_carrier_id is the uplink carrier identifier of the transmitted pilot sequence
- ul_carrier_id 0 or 1
- offset is the first parameter
- the value range of offset is (8960, 17920, 26880, 35840, 44800, 53760 , 62720).
- the features supported by the device include supporting small data transmission SDT, supporting slicing, and supporting coverage enhanced CE.
- a communication device may include a processing unit and a transceiver unit, and the transceiver unit is used to obtain a target value of a first parameter, and the target value of the first parameter is a candidate value of the first parameter
- the target value of the first parameter corresponds to the device characteristic
- the device characteristic includes the type of the device, and/or, the characteristics supported by the device
- the terminal device is a terminal device to be randomly connected to the network device
- the transceiver unit is further configured to receive the first message according to the random access radio network temporary identifier RA-RNTI, the first message includes the scheduling information of the random access response message or the random access response message, and the RA-RNTI is based on the first The parameters are determined.
- the target value of the first parameter is determined according to the type of the terminal device and/or the characteristics supported by the terminal device, and a corresponding relationship, the corresponding relationship It includes the relationship between the device characteristic and the candidate value of the first parameter.
- the number of device characteristics is N
- the candidate value range of the first parameter corresponding to the first communication characteristic is 1 to N, where N is a positive integer
- the candidate value of the first parameter is a positive integer
- the first communication characteristic includes at least one device characteristic
- the RA-RNTI may be determined according to the first parameter and the second parameter.
- the second parameter may be an uplink carrier identifier, which may be used to indicate whether the terminal device supports or uses a supplementary uplink (SUL, supplementary uplink).
- the sending uplink carrier identifier can have values of 0 and 1, where the terminal device does not support, or, when the auxiliary uplink is not used in this uplink transmission (that is, the normal uplink is used), the uplink The carrier identifier can be 0; the terminal device supports it, or when the auxiliary uplink is used in the uplink transmission, the uplink carrier identifier can be 1.
- the corresponding uplink carrier when the terminal device uses SUL uplink transmission, the corresponding uplink carrier may be a SUL carrier, and when the terminal device uses normal UL uplink transmission, the corresponding uplink carrier may be a normal UL carrier.
- the first parameter can be flexibly configured according to device characteristics, and the value of the second parameter can be determined according to whether auxiliary uplink is supported.
- the RA-RNTI may be based on the first parameter, the second parameter, the identifier of the first OFDM symbol of the RO, the RO The identification of the first time slot and the index of the RO in the frequency domain are determined.
- the RA-RNTI is based on the first parameter, the identifier of the first OFDM symbol of the RO, the first The ID of the time slot, the index of the RO in the frequency domain, and the ID of the uplink carrier that sends the pilot sequence are determined.
- the value of the uplink carrier identifier for sending the pilot sequence may be 0 or 1, and the value of the uplink carrier identifier for sending the pilot sequence may correspond to the type of the uplink carrier. For example, if the UL carrier is a normal uplink (normal UL, NUL) carrier, then ul_carrier_id is 0, and if the UL carrier is a supplementary uplink (supplementary uplink, SUL) carrier, then ul_carrier_id is 1.
- the first parameter can be flexibly configured according to device characteristics.
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first slot of the RO, the RO The index in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- f_id is the index of the RO in the frequency domain
- ul_carrier_id 0 or 1
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the The index of the RO in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- ul_carrier_id is the uplink carrier identifier of the transmitted pilot sequence
- ul_carrier_id 0 or 1
- offset is the first parameter
- the value range of offset is (8960, 17920, 26880, 35840, 44800, 53760 , 62720).
- the features supported by the device include supporting small data transmission SDT, supporting slicing, and supporting coverage enhancement CE.
- a communication device may include a processing unit and a transceiver unit.
- the transceiver unit is configured to send a target value of a first parameter, and the target value of the first parameter is a candidate value of the first parameter.
- One of the values, the candidate value of the first parameter corresponds to the device characteristic, the device characteristic includes the type of the device, and/or, the characteristics supported by the device, and the terminal device is a terminal device to be randomly connected to the network device;
- the processing unit is configured to use the RA-RNTI to scramble the first message, the first message includes the scheduling information of the random access response message or the random access response message, and the RA-RNTI is determined according to the first parameter; the transceiver unit further used to send the first message.
- the target value of the first parameter is determined according to the type of the terminal device and/or the characteristics supported by the terminal device, and a corresponding relationship, the corresponding relationship It includes the relationship between the device characteristic and the candidate value of the first parameter.
- the number of device characteristics is N
- the candidate value range of the first parameter corresponding to the first communication characteristic is 1 to N, where N is a positive integer
- the candidate value of the first parameter is a positive integer
- the first communication characteristic includes at least one device characteristic
- the RA-RNTI may be determined according to the first parameter and the second parameter.
- the second parameter may be an uplink carrier identifier, which may be used to indicate whether the terminal device supports or uses a supplementary uplink (SUL, supplementary uplink).
- the sending uplink carrier identifier can have values of 0 and 1, where the terminal device does not support, or, when the auxiliary uplink is not used in this uplink transmission (that is, the normal uplink is used), the uplink The carrier identifier can be 0; the terminal device supports it, or when the auxiliary uplink is used in the uplink transmission, the uplink carrier identifier can be 1.
- the corresponding uplink carrier when the terminal device uses SUL uplink transmission, the corresponding uplink carrier may be a SUL carrier, and when the terminal device uses normal UL uplink transmission, the corresponding uplink carrier may be a normal UL carrier.
- the first parameter can be flexibly configured according to device characteristics, and the value of the second parameter can be determined according to whether auxiliary uplink is supported.
- the RA-RNTI may be based on the first parameter, the second parameter, the identifier of the first OFDM symbol of the RO, the RO The identification of the first time slot and the index of the RO in the frequency domain are determined.
- the RA-RNTI is based on the first parameter, the identifier of the first OFDM symbol of the RO, the first The ID of the time slot, the index of the RO in the frequency domain, and the ID of the uplink carrier that sends the pilot sequence are determined.
- the value of the uplink carrier identifier for sending the pilot sequence may be 0 or 1, and the value of the uplink carrier identifier for sending the pilot sequence may correspond to the type of the uplink carrier. For example, if the UL carrier is a normal uplink (normal UL, NUL) carrier, then ul_carrier_id is 0, and if the UL carrier is a supplementary uplink (supplementary uplink, SUL) carrier, then ul_carrier_id is 1.
- the first parameter can be flexibly configured according to device characteristics.
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the RO The index in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- f_id is the index of the RO in the frequency domain
- ul_carrier_id 0 or 1
- the RA-RNTI, the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the The index of the RO in the frequency domain and the uplink carrier identity of the transmitted pilot sequence satisfy the following relationship:
- s_id is the identifier of the first OFDM symbol of the RO
- t_id is the identifier of the first time slot of the RO
- f_id is the index of the RO in the frequency domain
- ul_carrier_id is the uplink carrier identifier of the transmitted pilot sequence
- ul_carrier_id 0 or 1
- offset is the first parameter
- the value range of offset is (8960, 17920, 26880, 35840, 44800, 53760 , 62720).
- the features supported by the device include supporting small data transmission SDT, supporting slicing, and supporting coverage enhanced CE.
- a computer-readable medium stores program code for execution by a communication device, and the program code includes a program code for executing the first aspect or the second aspect, or, the first aspect or the second aspect Any possible implementation of the aspect, or an instruction of the communication method in the method of all possible implementations of the first aspect or the second aspect.
- a computer program product containing instructions, which, when running on a computer, causes the computer to execute the above first aspect or the second aspect, or any possible implementation of the first aspect or the second aspect , or, the methods of all possible implementations in the first aspect or the second aspect.
- a communication system in a seventh aspect, includes a communication system that implements the first aspect or the second aspect, or any possible implementation of the first aspect or the second aspect, or, the first aspect or the second aspect All possible implementation methods and various functional devices of possible designs in the two aspects.
- a processor configured to be coupled with a memory, and configured to execute the above-mentioned first aspect or the second aspect, or any possible implementation manner in the first aspect or the second aspect, or, the first aspect Aspect or the method in all possible implementations of the second aspect.
- a ninth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is used to communicate with external devices or internal devices, and the processor is used to implement the first or second aspect above, or, the first A method in any possible implementation manner of the first aspect or the second aspect or the third aspect, or all possible implementation manners of the first aspect or the second aspect.
- the chip may further include a memory, the memory stores instructions, and the processor is used to execute the instructions stored in the memory or other instructions.
- the processor is used to implement the method in the first aspect or the second aspect or any possible implementation manners thereof.
- the chip can be integrated on the terminal.
- Fig. 1 is a schematic diagram of a communication system applicable to an embodiment of the present application.
- Fig. 2 shows a schematic diagram of a value range of RA-RNTI.
- Fig. 3 shows a schematic diagram of another RA-RNTI value range.
- FIG. 4 shows a schematic diagram of a communication method proposed by an embodiment of the present application.
- FIG. 5 shows a schematic flow chart of a communication method proposed by an embodiment of the present application.
- Fig. 6 shows a schematic block diagram of a communication device according to an embodiment of the present application.
- Fig. 7 shows a schematic block diagram of another communication device according to an embodiment of the present application.
- the embodiments of the present application can be applied to various communication systems, such as a wireless local area network system (wireless local area network, WLAN), a narrowband Internet of Things system (narrow band-internet of things, NB-IoT), a global system for mobile communications (global system for mobile communications, GSM), enhanced data rate for GSM evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division-synchronization code division multiple access system (time division-synchronization code division multiple access, TD-SCDMA), long term evolution system (long term evolution, LTE), satellite communication, fifth generation (5th generation, 5G) systems or new communication systems that will appear in the future.
- WLAN wireless local area network
- NB-IoT narrowband Internet of Things system
- GSM global system for mobile communications
- GSM global system for mobile communications
- enhanced data rate for GSM evolution system enhanced data rate for GSM
- 5G mobile communication systems have emerged as the times require.
- the International Telecommunication Union (ITU) defines three application scenarios for 5G and future mobile communication systems: enhanced mobile broadband (eMBB), ultra reliable and low latency communication (ultra reliable and low latency) communications, URLLC) and massive machine type communications (mMTC).
- Typical eMBB services include: ultra-high-definition video, augmented reality (augmented reality, AR), virtual reality (virtual reality, VR), etc.
- the main characteristics of these services are large amount of transmitted data and high transmission rate.
- Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and unmanned aircraft, and tactile interaction applications such as remote repair and remote surgery.
- the main feature of these services is the requirement of ultra-high reliability Sexuality, low latency, small amount of transmitted data, and bursty nature.
- Typical mMTC services include: smart grid power distribution automation, smart city, etc.
- the main characteristics are the huge number of networked devices, the small amount of transmitted data, and the data is not sensitive to transmission delay. These mMTC terminals need to meet low cost and very long standby time time demands.
- the standard refers to the user equipment (UE) of mMTC service as low-complexity UE (reduced capability UE, REDCAP UE), or narrow-bandwidth user equipment, or IoT equipment, or low-end smart handheld terminal.
- This type of UE may be less complex than other UEs in terms of bandwidth, power consumption, and number of antennas, such as narrower bandwidth, lower power consumption, and fewer antennas.
- This type of UE can also be called a lightweight version of terminal equipment (NR light, NRL).
- the maximum bandwidth supported by mMTC user equipment is less than 100MHz. It should be noted that the mMTC user equipment in this application is not only a machine type communication device, but also a smart handheld terminal.
- the mobile communication system includes a radio access network device 120, that is, a network device 120, and at least one terminal device (such as terminal device 130, terminal device 140, and terminal device 150 in FIG. 1).
- the terminal device is connected to the wireless access network device in a wireless manner
- the wireless access network device is connected to the core network device in a wireless or wired manner.
- the core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment.
- Terminal equipment can be fixed or mobile.
- FIG. 1 is only a schematic diagram.
- the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
- the embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.
- the information sending end in the communication system of the present application may be a network device or a terminal device
- the information receiving end may be a network device or a terminal device, which is not limited in this application.
- a network device and a terminal device are used as an example to describe a solution, which is not limited thereto.
- the radio access network device is the access device that the terminal device accesses the mobile communication system through wireless means, and can be a base station NodeB, an evolved base station (evolved node B, eNodeB), a base station in a 5G mobile communication system, a future mobile For base stations in a communication system or access nodes in a WiFi system, etc.
- the embodiments of the present application do not limit specific technologies and specific equipment forms adopted by wireless access network equipment.
- the terminal device may also be called a terminal (Terminal), a user equipment UE, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT) and so on.
- Terminal equipment can be mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
- Radio access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air.
- the embodiments of the present application do not limit the application scenarios of the wireless access network device and the terminal device.
- the embodiments of the present application may be applicable to downlink signal transmission, uplink signal transmission, or device-to-device (device to device, D2D) signal transmission.
- the sending device is a wireless access network device
- the corresponding receiving device is a terminal device.
- the sending device is a terminal device
- the corresponding receiving device is a wireless access network device.
- D2D signal transmission the sending device is a terminal device, and the corresponding receiving device is also a terminal device.
- the embodiment of the present application does not limit the transmission direction of the signal.
- Communications between wireless access network devices and terminal devices and between terminal devices can be performed through licensed spectrum (licensed spectrum), or through unlicensed spectrum (unlicensed spectrum), or both through licensed spectrum and unlicensed spectrum.
- Licensed spectrum for communication Communication between wireless access network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the spectrum below 6G, or through the spectrum above 6G, and can also use the spectrum below 6G and above 6G spectrum at the same time to communicate.
- the embodiments of the present application do not limit the frequency spectrum resources used between the radio access network device and the terminal device.
- the random access process is as follows:
- the terminal device searches the synchronization signal and the physical broadcast channel (synchronization Signal and PBCH, SSB), and the terminal device obtains the master information block (MIB) sent by the network device by searching the SSB.
- the terminal device obtains the time-domain resources and frequency-domain resources of the control resource set (CORESET) according to the MIB, and the terminal device can detect the downlink control information (downlink control information) of the scheduling system information block (SIB) on the CORESET , DCI), receive SIB1 at the time-frequency position indicated by DCI, so that the initial uplink bandwidth part (initial uplink bandwidth part, Initial UL BWP) and initial downlink bandwidth part (initial downlink bandwidth part) indicated in SIB1 can be received bandwidth part, Initial DL BWP), random access preamble list, random access opportunity list and other information.
- SIB scheduling system information block
- the terminal device sends a physical random-access channel (physical random-access channel, PRACH, Msg1) carrying a random access sequence in the random access opportunity (RACH occasion, RO) resource associated with the SSB;
- PRACH physical random-access channel
- Msg1 carrying a random access sequence in the random access opportunity (RACH occasion, RO) resource associated with the SSB;
- RAR Random access response
- the UE monitors the downlink control information (DCI) transmitted on the physical downlink control channel (PDCCH) in the pre-configured RAR window.
- DCI downlink control information
- the RAR information is obtained from a media access control (media access control, MAC) protocol data unit (protocol Data Unit, PDU) carried by a channel (physical downlink shared channel, PDSCH).
- media access control media access control, MAC
- protocol data unit protocol Data Unit, PDU
- PDSCH physical downlink shared channel
- the base station if the base station cannot receive the preamble sequence due to random access sequence conflicts selected between different UEs, or poor channel conditions, the base station will not send RAR information, and the UE will not detect the preamble sequence in the RAR window. to DCI and MAC RAR, then this random access fails.
- the terminal After successfully detecting the DCI, the terminal receives the random access response RAR (ie Msg2), and sends the physical uplink shared channel (physical uplink shared channel, PUSCH, ie Msg3) according to the time-frequency resources indicated by the uplink grant UL grant in the random access response ), the network device then sends DCI to the terminal device, and the DCI indicates the time-frequency resource for carrying the contention resolution message, that is, Msg4. The terminal device detects the DCI and receives Msg4.
- RAR random access response
- PUSCH physical uplink shared channel
- radio resource control radio resource control
- UE needs to receive in CORESET 0: PDCCH for scheduling SIB1, PDSCH for carrying SIB1, PDCCH for scheduling SI, PDSCH for carrying SI, scheduling Msg2
- the PDCCH of Msg2 carries the PDSCH of Msg2, the PDCCH of Msg3 is scheduled, the PDCCH of Msg4 is scheduled, and the PDSCH of Msg4 is carried.
- the UE needs to send the PUSCH carrying Msg1 and the PUSCH carrying Msg3 in the initial UL BWP.
- the UE in this application can be divided into a first type of terminal equipment and a second type of terminal equipment.
- the first type of terminal equipment is, for example, a low-complexity UE (reduced capability UE, REDCAP UE), and the second type of terminal equipment can be Legacy UE, such as eMBB UE.
- the characteristics of the first-type terminal device and the second-type terminal device are different, and the characteristics include one or more of the following:
- Bandwidth number of supported or configured resources, number of transmit antenna ports and/or number of receive antenna ports, number of radio frequency channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenarios, time Extension requirements, processing capabilities, protocol versions, duplex modes, services, etc.
- HARQ hybrid automatic repeat request
- Bandwidth, or channel bandwidth, or the maximum channel bandwidth supported or configured by a terminal device The bandwidths of the first type of terminal device and the second type of terminal device are different.
- the bandwidth of the first type of terminal device can be 20MHz or 10MHz or 5MHz.
- the bandwidth of the type 2 terminal equipment may be 100MHz. It can be understood that with the development of communication technologies, the maximum channel bandwidth supported by the first type of terminal equipment may no longer be 20MHz, 10MHz, or 5MHz, but may evolve into wider or narrower bandwidths such as 3MHz, 25MHz, and 50MHz.
- the number of resources supported or configured can be RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, slot, mini-slot and/or number of symbols, the first
- the number of resources supported or configured by the terminal device of the first type and the terminal device of the second type are different.
- the number of resources supported by the terminal device of the first type is 48 RB
- the number of resources supported by the terminal device of the second type is 96 RB.
- the number of transmitting antenna ports and/or the number of receiving antenna ports i.e. the number of transmitting antenna ports and/or the number of receiving antenna ports of the first type of terminal equipment is different from that of the second type of terminal equipment, for example: the number of transmitting antenna ports of the first type of terminal equipment It may be 1, the number of receiving antenna ports may be 2, the number of transmitting antenna ports of the second type terminal device may be 2, and the number of receiving antenna ports may be 4.
- the number of radio frequency channels that is, the number of radio frequency channels of the first type of terminal equipment is different from that of the second type of terminal equipment, for example: the number of radio frequency channels of the first type of terminal equipment can be 1, and the number of radio frequency channels of the second type of terminal equipment can be 2 indivual.
- the number of HARQ processes that is, the number of HARQ processes supported by the first type of terminal equipment is different from that of the second type of terminal equipment, for example: the number of HARQ processes of the first type of terminal equipment can be 8, and the number of HARQ processes of the second type of terminal equipment can be 16 .
- Supported peak rate that is, the maximum peak rate of the first type of terminal device and the second type of terminal device are different, for example: the maximum peak rate supported by the first type of terminal device can be 100Mbps, and the peak rate supported by the second type of terminal device can be 200Mbps.
- Application scenarios that is, the first type of terminal equipment and the second type of terminal equipment serve different application scenarios, for example: the first type of terminal equipment is used in industrial wireless sensing, video surveillance, wearable devices, etc., and the second type of terminal equipment Applied in mobile communication, video surfing the Internet, etc.
- Delay requirements that is, the first type of terminal equipment and the second type of terminal equipment have different requirements for transmission delay, for example: the delay requirement of the first type of terminal equipment can be 500 milliseconds, and the delay requirement of the second type of terminal equipment can be is 100 milliseconds.
- the first type of terminal equipment and the second type of terminal equipment have different processing speeds for channel or data processing timing under different subcarrier space (subcarrier space, SCS) conditions, for example: the first type of terminal equipment Complicated calculations are not supported, and the complex calculations may include: artificial intelligence (AI), virtual reality (VR) rendering, the second type of terminal device supports complex calculations, or understood as the first type
- the processing capability of the terminal device is lower than that of the second type of terminal device.
- Protocol version that is, the first type of terminal equipment and the second terminal equipment belong to terminal equipment of different protocol versions, for example: the protocol version supported by the first type of terminal equipment is Release 17 and the protocol version after Release 17, and the second type of terminal equipment supports The protocol version is the protocol version before Release 17, such as Release 15 or Release 16.
- a duplex mode includes half-duplex and full-duplex, for example: the first type of terminal equipment works in a half-duplex mode, and the second type of terminal equipment works in a full-duplex mode.
- Services including but not limited to IoT applications, such as video surveillance, mobile broadband MBB, etc.
- the service supported by the first type of terminal equipment is video surveillance
- the service supported by the second type of terminal equipment is mobile broadband MBB.
- This embodiment of the present application does not limit it.
- the first terminal device in this application may be an example of the first type of terminal device, and the second terminal device may be an example of the second type of terminal device.
- Initial downlink bandwidth part Initial DL BWP: Indicated in SIB1, the frequency range includes CORESET, but it will not take effect until Msg4 is received.
- Initial uplink bandwidth part Initial uplink bandwidth part, Initial UL BWP: Indicated in SIB1, the uplink channel PRACH involved in the initial access process, the HARQ-ACK feedback of Msg3 and Msg4 are all within the range of initial UL BWP conduct.
- PRACH resources may be PRACH time domain resources, PRACH frequency domain resources and PRACH code domain resources (preamble).
- the time domain and frequency domain of the PRACH are RO time-frequency domain resources.
- the access network device may broadcast RACH configuration information through SIB1, and the RACH configuration information may include a RACH configuration index (prach-ConfigurationIndex), where the RACH configuration index is used to indicate PRACH time domain resource configuration information, and the value range of the index may be 0 ⁇ 255.
- the terminal device obtains the time domain position of the RO through the RACH configuration index and other information; the frequency domain configuration of the PRACH can be configured by the RRC layer, which can include the parameter msg1-FDM, which is used to indicate the number of ROs in the frequency domain, and the time domain
- the ROs above start from the lower frequency domain and start numbering from 0, and the maximum supported number is 7 at present.
- the ID corresponding to the RO is f_id.
- Device characteristics It can be a network device or a terminal device supporting SDT, slicing, control element (CE) enhancement, etc.; it can be a type of terminal, for example, RedCap; it can also be a superposition of the two, for example, a RedCap terminal
- CE control element
- the low-complexity terminal device is a relative concept, which is not limited in the present application.
- a new type of terminal equipment that may be developed in the future has more complex characteristics than the existing legacy UE in at least one of the aspects of bandwidth, number of antennas, and equipment power consumption.
- the legacy UE will be the first type of terminal in this application Device
- the new type of terminal device will be used as the second type of terminal device in this application
- the embodiments of this application are still applicable, and are within the protection scope of this application.
- a cell generally includes an uplink carrier (uplink carrier) and a downlink carrier (downlink carrier), and the uplink carrier and the downlink carrier are in the same frequency band (frequency band). But in the 5G era, the bandwidth and frequency points used are relatively high, such as millimeter waves. The higher the frequency band, the greater the signal transmission loss. Since the transmit power of the UE is limited, this will result in the limitation of the uplink coverage of the UE.
- the SUL technology ensures the uplink coverage of the UE by providing an auxiliary uplink (generally in a low frequency band, such as the LTE frequency band).
- the normal uplink of the UE may be called UL, and the auxiliary uplink is called SUL.
- SUL can use the 1.8G frequency band, the frequency point is low, and the signal loss is small, which can ensure the coverage of UL.
- the UE can dynamically select the transmission link between UL and SUL, but at the same time, the UE can only select one of the links to send data, and cannot send uplink data on the two uplinks at the same time.
- the access network device in the embodiment of the present application may also be called a network device, which is not specifically limited in the present application.
- the terminal first sends a pilot sequence (preamble) to the access network device, and the access network device sends a RAR to the terminal device after receiving the pilot sequence sent by the terminal device.
- the terminal device starts the RAR window at the first PDCCH occasion after sending the pilot sequence, and monitors the PDCCH used to schedule the RAR in the RAR window.
- the PDCCH uses a random access radio network temporary identifier (random access radio network temporary identifier, RA-RNTI) for scrambling.
- the terminal device obtains the RAR according to the monitored PDCCH, and sends the third message (Msg 3) in the random access process based on the scheduling of the RAR message.
- Msg3 is used to send the layer 3 ( L3) or Layer 2 (L2) information.
- the terminal device and the access network device calculate the RA-RNTI based on RO information.
- the rules are as follows:
- RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
- s_id is the identifier of the first OFDM symbol of the RO, 0 ⁇ s_id ⁇ 14.
- t_id is the identifier of the first time slot of the RO, 0 ⁇ t_id ⁇ 80, and t_id can be determined according to sub-carrier spacing (sub-carrier spacing, SCS).
- f_id is the index of the RO in the frequency domain, that is, the number of the RO in the frequency domain. The frequency domain number starts from 0 and the maximum is 7, that is, 0 ⁇ f_id ⁇ 8.
- ul_carrier_id is the identifier of the UL carrier that sends the pilot sequence.
- UL carrier is a normal uplink (NUL) carrier
- ul_carrier_id is 0
- ul_carrier_id is 1.
- SUL supplementary uplink
- RA-RNTI for an ordinary UE (an example of the above-mentioned second type of terminal equipment) and a RedCap UE (an example of the above-mentioned first type of terminal equipment) as an example
- frequency domain numbering starts from 0, and the maximum is 7. Therefore, even if the two groups of RACH resources have different resources in the frequency domain, there may be cases where the frequency domain numbers of the two ROs are the same, which will result in the same RA-RNTI value calculated from the two ROs.
- the terminal device cannot distinguish whether the PDCCH for scheduling RAR sent by the access network device and scrambled by the RA-RNTI is for a normal UE or a RedCap UE. This increases the possibility of random access collisions, the probability of random access failure is high, and the access delay is relatively large.
- the PRACH resource is determined through different dimensions, such as time domain s_id, t_id, frequency domain f_id, and carrier domain ul_carrier_id, and then the PDCCH of the RAR is scrambled and scheduled through the RA-RNTI.
- RA-RNTI if new features or terminal types are introduced, new values can be added on the basis of the above calculation rules. For example, in the case of using two-step RACH, the RNTI of two-step RACH (message b radio network temporary identifier, MSGB-RNTI) is calculated as:
- MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2.
- 14 ⁇ 80 ⁇ 8 ⁇ 2 is the offset (17920) introduced for the two-step RACH.
- the value range of MSGB-RNTI is 17921 ⁇ 26880, that is, if the communication network (or the device participating in the communication) does not support SUL, the RNTI
- the range 8961 ⁇ 17920 will not be used, as shown in Figure 3. That is, the RNTI distinction achieved in the above manner will lead to a great waste of RNTI resources.
- RA-RNTI 0001-FFF2 in hexadecimal, that is, 1-65522 in decimal. If you continue to introduce new RA-RNTI values for different terminal equipment types and/or terminal service types according to the above method (for example, when calculating RA-RNTI, a larger offset value is continuously added), it will exceed the RA-RNTI value. The maximum value range, and for unsupported device features, using the above RNTI extension method will lead to waste of RNTI resources.
- the embodiment of the present application proposes a communication method, as shown in Figure 4, which may include the following steps:
- Step 401 The network device sends the target value of the first parameter, and correspondingly, the terminal device receives the target value of the first parameter.
- the target value of the first parameter is one of the candidate values of the first parameter
- the candidate value of the first parameter corresponds to the device characteristic
- the device characteristic includes the type of terminal device participating in the communication, and/or, the terminal A feature supported by a device or a network device participating in communication.
- the terminal device may be a terminal device to be randomly connected to the network device.
- the network device can communicate with multiple terminal devices at the same time, and the multiple terminal devices can be from the same cell or from different cells, which is not limited in this application.
- the network device may send the target value of the first parameter to the terminal device in the form of broadcast, for example, the target value of the first parameter may be carried in the SIB1 or SIB2 message and sent in the form of broadcast. It should be understood that other ways of sending the target value of the first parameter should also fall within the protection scope of the present application, such as multicast, unicast, and the like. When there are multiple target values of the first parameter to be sent, the network device may send them at one time or in batches, which is not limited in this application.
- the target value of the first parameter may be determined according to the device characteristics and the corresponding relationship, and the corresponding relationship may include the relationship between the device characteristics and the candidate values of the first parameter.
- the type of device may be a type of terminal device, for example, may include: a first type of terminal device and a second type of terminal device.
- the features supported by the device may be that the device supports SDT, supports slicing, and supports CE enhancement.
- the network device may flexibly configure the first parameter according to the features supported by the device and the number of features.
- the network device determines the target value of the first parameter, one characteristic or multiple characteristics may be considered.
- a characteristic may be considered. For example, the network device may determine the target value of the first parameter according to the type of the terminal device and the corresponding relationship. If the terminal device belongs to the first type of terminal device, the network device can determine that the target value of the first parameter corresponding to the terminal device is 1; if the terminal device belongs to the second type of terminal device, the network device can determine the target value of the first parameter corresponding to the terminal device The target value of the first parameter is 2. For another example, the network device may determine the target value of the first parameter according to the characteristics supported by itself and the corresponding relationship. If the network device supports SDT, it may be determined that the target value of the first parameter is 3; if the network device supports slicing, it may be determined that the target value of the first parameter is 4.
- multiple characteristics may be considered. For example, multiple characteristics of the terminal device may be considered. For example, if the terminal device is a first-type terminal device and supports SDT at the same time, the target value of the corresponding first parameter may be 1; the terminal device is a first-type terminal device, and at the same time If SDT and CE enhancement are supported, the target value of the corresponding first parameter may be 2.
- an example of the corresponding relationship may be that the number of device characteristics is N, and the candidate value range of the first parameter corresponding to the first communication characteristic is 1 to N, wherein, N is a positive integer, and the candidate value range of the first parameter is The value is a positive integer, and the first communication characteristic includes at least one device characteristic.
- the corresponding relationship can be fixed.
- the value of the first parameter corresponding to CE enhancement is 1, the value of the first parameter corresponding to slice is 2, and the value of the first parameter corresponding to SDT is 3.
- the network device The target value of the first parameter is determined based on the device characteristics of the terminal device to be randomly accessed. It can be understood that when the corresponding relationship is fixed, the network device and the terminal device can store the corresponding relationship, and determine the value of the first parameter by itself according to the corresponding relationship and device characteristics; the network device can also use multiple values of the first parameter
- the candidate values are sent to the terminal device, and the terminal device determines the value of the first parameter by itself according to the corresponding relationship and device characteristics among the plurality of candidate values. This application is not limited to this.
- the corresponding relationship can also be flexibly configured.
- the network device determines the first parameter from multiple candidate values of the first parameter according to the corresponding relationship, and the device characteristics of the terminal device to be randomly accessed and the device characteristics of the network device The target value of , and send the target value to the terminal device. This application is not limited to this.
- the network device may indicate the corresponding relationship to the terminal device, and the terminal device determines the value of the first parameter according to the corresponding relationship and device characteristics.
- the value of the first parameter may be determined by the network device and sent to the terminal device, or may be determined by the network device and the terminal device respectively. This application is not limited to this.
- Step 402 The network device scrambles the first message through the RA-RNTI.
- the RA-RNTI may be determined by the network device according to the first parameter.
- the RA-RNTI can be based on the first parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the index of the RO in the frequency domain, and the transmission pilot sequence determined by the uplink carrier ID.
- s_id is the identifier of the first OFDM symbol of RO
- t_id is the identifier of the first time slot of RO
- f_id is the index of RO in the frequency domain
- f_id is the index of RO in the frequency domain
- f_id is the index of RO in the frequency domain
- ul_carrier_id 0 or 1
- the network device flexibly configures the first parameter according to the features it supports and the number of features. It can be understood that, if the network device configures the SUL carrier, the value of the network device a cannot be 1. For another example, at a certain moment, when the network device changes from supporting SUL to not supporting, the value of a may be 1. Specifically, the name of a can also be feature_id or other names, and there is no specific limitation.
- the value of a may also be 0.
- the initial DL BWP is a dedicated frequency domain resource for the first type of terminal equipment, or the frequency domain resource for the first type of terminal equipment
- the initial DL BWP is different from the initial DL BWP of the second type of terminal; or the first type of terminal device has a separate common search space when receiving RAR, then the first type of terminal device and the second type of terminal device do not pass RA-RNTI By distinguishing resources, you can also obtain the corresponding RAR information without confusion. In these cases, the value of a can be 0.
- the network device when the network device sends RACH configuration information to the terminal device, it may explicitly or implicitly indicate whether the initial DL BWP, or the public search space, is configured separately. If configured separately, a can be 0.
- the network device may send the indication information to indicate the value of a, or the network device may not send the indication information, for example, when sending the configuration information, the relevant field for indicating the value of a is not carried, indicating that the value is 0, That is to say, when the field of a does not appear, it can be considered as 0.
- Table 1 is only used as an example rather than limitation, and all or part of the content in Table 1 may be used as an implementation.
- s_id is the identifier of the first OFDM symbol of RO
- t_id is the identifier of the first time slot of RO
- f_id is the index of RO in the frequency domain
- ul_carrier_id is the uplink carrier identifier for sending the pilot sequence
- ul_carrier_id 0 or 1
- offset is the first parameter
- the value range of offset is (8960, 17920, 26880, 35840, 44800, 53760), which can also be understood It is an integer multiple of 8960 (14*80*8), but the result of calculating the RA-RNTI does not exceed the maximum value of the RA-RNTI.
- s_id is the identifier of the first OFDM symbol of RO
- t_id is the identifier of the first time slot of RO
- f_id is the index of RO in the frequency domain
- ul_carrier_id is the ID of the uplink carrier that sends the pilot sequence
- ul_carrier_id 0 or 1
- a is the first parameter
- the value range of a is ⁇ 0,1 ⁇ .
- the RA-RNTI may be determined by the network device according to the first parameter and the third parameter.
- the RA-RNTI can be based on the first parameter, the third parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, the index of the RO in the frequency domain, and The identification of the uplink carrier that sends the pilot sequence is determined.
- s_id is the identifier of the first OFDM symbol of RO
- t_id is the identifier of the first time slot of RO
- f_id is the index of RO in the frequency domain
- f_id is the index of RO in the frequency domain
- ul_carrier_id 0 or 1
- a is the first parameter
- the value range of a is ⁇ 1, 2, 3, 4, 5, 6 ⁇
- k is the first Three parameters, the value range of k is ⁇ 0,1 ⁇ .
- k indicates whether a certain feature exists, and a is associated with the number of features already supported by the terminal device or network device, and has different values for different features.
- the first cell supports two characteristics based on PRACH division of resources, respectively supporting SDT and the type of terminal equipment being RedCap, then for the SDT characteristic, the value of a may be 1, For RedCap, the value of a can be 2.
- the network device determines the values of a and k, and may send the values of a and k to the terminal device.
- the RA-RNTI may be determined by the network device according to the first parameter, the third parameter and the fourth parameter.
- the RA-RNTI can be based on the first parameter, the third parameter, the fourth parameter, the identifier of the first OFDM symbol of the RO, the identifier of the first time slot of the RO, and the ID of the RO in the frequency domain. It is determined by the upper index and the identification of the uplink carrier that transmits the pilot sequence.
- s_id is the identifier of the first OFDM symbol of RO
- t_id is the identifier of the first time slot of RO
- f_id is the index of RO in the frequency domain
- f_id is the index of RO in the frequency domain
- ul_carrier_id 0 or 1
- a is the first parameter
- the value range of a is ⁇ 0,1 ⁇
- k is the third parameter
- the value range of k is ⁇ 0,1 ⁇
- b is the fourth parameter
- the value range of b is ⁇ 0,1 ⁇ .
- the network device determines the values of a, k, and b, and may send the values of a, k, and b to the terminal device.
- the network device scrambles the first message according to the RA-RNTI, where the first message may include scheduling information of the random access response message or the random access response message.
- Step 403 the network device sends the first message, and correspondingly, the terminal device receives the first message according to the RA-RNTI.
- the network device may carry the first message in a system information block (SIB) and send it.
- SIB system information block
- the first message may include scheduling information of a random access response message corresponding to at least one terminal device or a random access response message.
- the terminal device may determine the RA-RNTI according to the first parameter.
- the method for the terminal device to determine the RA-RNTI is similar to that of the network device, and reference may be made to the description in step 402, which will not be repeated here.
- the terminal device can determine the first message scrambled with the same RA-RNTI among the multiple messages according to the RA-RNTI, and the terminal device can decode the first message to obtain the random access The scheduling information of the incoming response message or the random access response message.
- a terminal device receives multiple messages, and the multiple messages are respectively scrambled with different values of RA-RNTI, wherein the first message is scrambled with a first RA-RNTI, and the terminal device may
- the target value of a parameter determines the RA-RNTI, and when the RA-RNTI is the same as the first RA-RNTI, the terminal device can identify the first message, and decode the first message.
- the method determines the parameter value corresponding to the device characteristic through the corresponding relationship, and can ensure that the RA-RNTI value corresponding to different device characteristics is different, so that the scheduling information of the random access response message scrambled through the RA-RNTI or the random access response message It can be distinguished, and the RACH resources acquired by the terminal equipment are independent, which avoids conflicts that may be caused by the inability of the terminal equipment to distinguish RACH resources during the random access process, improves the efficiency of random access, and reduces the delay of random access.
- the embodiment of the present application provides a communication method, as shown in Figure 5, in this method, the relationship between the parameters used to determine the RA-RNTI can be as shown in Figure 4
- the first parameter may be a in the method shown in FIG. 4
- the device characteristics of the terminal device may be in the method shown in FIG. 4
- the terminal device is a first type of terminal device.
- the method may include the steps of:
- Step 501 the network device determines the target value of a.
- step 401 For a in this step, reference may be made to the description of the first parameter in step 401, which will not be repeated here.
- the network device can determine the target value of a according to the device characteristic of the terminal device.
- the device characteristic of the terminal device is the first type of terminal device, and the network device can determine the value of a according to the device characteristic "first type terminal device" and the corresponding relationship. 1.
- Step 502 the network device sends the target value of a, and correspondingly, the terminal device acquires the target value of a.
- the network device may broadcast the target value of a.
- Step 503 The network device determines the RA-RNTI according to the value of a, and scrambles the first message through the RA-RNTI.
- the network device may determine the RA-RNTI according to the relation 1 in step 402 .
- the network device may determine the RA-RNTI according to the relation 1 in step 402 .
- For the first message reference may be made to the description of the first message in step 402, and details are not repeated here.
- Step 504 the network device sends the first message, and correspondingly, the terminal device receives the first message according to the RA-RNTI.
- Step 505 the terminal device decodes the first message, and acquires RACH resources.
- the RA-RNTI may be determined by the terminal device, and the determination method may refer to the description in step 403, and details are not repeated here.
- the network device and the terminal device determine the value of a corresponding to the device characteristic of the terminal device according to the corresponding relationship, and further determine the RA-RNTI to ensure that the RA-RNTI corresponding to different device characteristics is different, so that the terminal device can distinguish RACH resources, avoiding possible conflicts in the random access process, improving access efficiency, and reducing access delay.
- the network device or the terminal device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
- each functional module in each embodiment of the present application may be integrated into one processor, or physically exist separately, or two or more modules may be integrated into one module.
- the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
- the embodiment of the present application further provides a communication device 600 for realizing the function of the above method.
- the device may be a software module or a system on a chip.
- the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
- the apparatus 600 may include: a processing unit 610 and a transceiver unit 620 .
- the transceiving unit 620 is configured to perform the steps of sending and receiving information in the above method embodiments.
- the transceiving unit 620 is configured to receive the target value of the first parameter and the first message.
- the processing unit 610 is configured to determine the RA-RNTI and the like according to the first parameter.
- the transceiving unit 620 is configured to send the target value of the first parameter and the first message.
- the processing unit 610 is configured to determine the RA-RNTI and the like according to the first parameter.
- processing unit 610 and the transceiver unit 620 can also perform other functions.
- processing unit 610 and the transceiver unit 620 can also perform other functions.
- FIGS. 3 to 6 or related descriptions in other method embodiments, and details are not repeated here.
- a communication device 700 provided in an embodiment of the present application is provided.
- the device shown in FIG. 7 may be a hardware circuit implementation manner of the device shown in FIG. 6 .
- the communication device may be applicable to the flow chart shown above, and execute the functions of the network device or the terminal device in the above method embodiments.
- FIG. 7 only shows the main components of the communication device.
- a communication device 700 includes a processor 710 and an interface circuit 720 .
- the processor 710 and the interface circuit 720 are coupled to each other.
- the processor 710 may be a logic circuit
- the interface circuit 720 may be a transceiver or an input-output interface.
- the communication device 700 may further include a memory 730 for storing instructions executed by the processor 710 or storing input data required by the processor 710 to execute the instructions or storing data generated after the processor 710 executes the instructions.
- the processor 710 is used to implement the functions of the processing unit 610
- the interface circuit 720 is used to implement the functions of the transceiver unit 620 .
- the processor in the embodiments of the present application can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
- a general-purpose processor can be a microprocessor, or any conventional processor.
- the processor can be random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable In addition to programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art middle.
- An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
- the storage medium may also be a component of the processor.
- the processor and storage medium can be located in the ASIC.
- the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.
- the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.
- the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer programs or instructions, and the computer programs or instructions are executed by a computer (for example, a processor) to implement the embodiments of the present application Part or all of the steps of any method performed by any device.
- a computer for example, a processor
- the embodiment of the present application also provides a computer program product including a computer program or a set of instructions, when the computer program product is run on a computer, some or all steps of any one of the above methods are executed.
- the present application also provides a chip or a chip system, and the chip may include a processor.
- the chip may also include memory (or storage module) and/or transceiver (or communication module), or, the chip is coupled with memory (or storage module) and/or transceiver (or communication module), wherein the transceiver ( or communication module) can be used to support the chip for wired and/or wireless communication, the memory (or storage module) can be used to store a program or a set of instructions, and the processor calls the program or the set of instructions can be used to implement the above method embodiments, An operation performed by the first communication apparatus (or terminal device) or the second communication apparatus (or network device) in any possible implementation manner of the method embodiment.
- the system-on-a-chip may include the above-mentioned chips, and may also include the above-mentioned chips and other discrete devices, such as memory (or storage module) and/or transceiver (or communication module).
- the present application further provides a communication system, where the communication system may include the above terminal device and/or network device.
- the communication system may be used to implement the operations performed by the terminal device or the network device in any of the foregoing method embodiments and any possible implementation manners of the method embodiments.
- the communication system may have a structure as shown in FIG. 1 .
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
- the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
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Abstract
本申请实施例提供了一种通信方法及装置,该方法可以包括终端设备获取第一参数的目标取值,第一参数的目标取值为第一参数的候选取值中的一个,第一参数的候选取值与设备特性对应,设备特性包括设备的类型,和/或,设备支持的特性,终端设备为待随机接入网络设备的终端设备;终端设备根据RA-RNTI接收第一消息,RA-RNTI是根据第一参数确定的。该方法通过对应关系确定与设备特性对应的参数值,能够确保不同的设备特性对应的RA-RNTI值不同,这样通过RA-RNTI加扰的消息得以区分,避免了随机接入过程中可能因终端设备无法区分RACH资源而造成的冲突,提高了随机接入的效率,降低了随机接入的时延。
Description
本申请要求于2021年10月20日提交中国专利局、申请号为202111221147.X、申请名称为“一种通信方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及通信领域。尤其涉及一种通信方法及装置。
目前,终端设备的设备类型越来越多,业务类型也越来越多,为了区分不同的设备类型/业务类型,可以针对设备类型/业务类型配置独立的随机接入信道(random access channel,RACH)资源。RACH资源中包括至少一个随机接入时机(RACH occasion,RO)。终端设备可以根据自身的设备类型/业务类型在对应的RO上进行随机接入。目前,根据不同RO的频域编号计算得到的随机接入无线网络临时标识(random access radio network temporary identifier,RA-RNTI)的值可能相同,这样终端设备无法区分对应的RACH资源,容易发生随机接入冲突,导致接入时延较大。
因此,如何避免随机接入冲突,降低接入时延,提高接入效率是亟待解决的问题。
发明内容
本申请实施例提供一种通信方法及装置,能够解决随机接入过程中的冲突问题,提高接入效率。
第一方面,提供了一种通信方法,该方法可以包括:终端设备获取第一参数的目标取值,该第一参数的目标取值为该第一参数的候选取值中的一个,该第一参数的候选取值与设备特性对应,该设备特性包括设备的类型,和/或,设备支持的特性,该终端设备为待随机接入该网络设备的终端设备;该终端设备根据随机接入无线网络临时标识RA-RNTI接收第一消息,该RA-RNTI是根据该第一参数确定的,该第一消息包括随机接入响应消息的调度信息或随机接入响应消息。
该方法通过对应关系确定与设备特性对应的参数值,能够确保不同的设备特性对应的RA-RNTI值不同,这样通过RA-RNTI加扰的随机接入响应消息的调度信息或随机接入响应消息得以区分,终端设备获取的RACH资源独立,避免了随机接入过程中可能因终端设备无法区分RACH资源而造成的冲突,提高了随机接入的效率,降低了随机接入的时延。
结合第一方面,在第一方面的某些实现方式中,第一参数的目标取值是根据终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
该对应关系可以是固定的,也可以是灵活配置的,本申请对此不作限定。
结合第一方面,在第一方面的某些实现方式中,该设备特性的数目为N,第一通信特性对应的该第一参数的候选取值范围为1至N,其中,N为正整数,该第一参数的候选取值为正整数,该第一通信特性包括至少一个设备特性。
结合第一方面,在第一方面的某些实现方式中,该RA-RNTI可以根据该第一参数和第二参数确定。
其中,第二参数可以是上行载波标识,可以用于指示终端设备是否支持或者使用辅助上行链路(SUL,supplementary uplink)。示例地,该发送上行载波标识可以有0和1的取值,其中该终端设备不支持,或者,在该次上行传输中不使用辅助上行链路时(也就是使用普通上行链路),上行载波标识可以取0;该终端设备支持,或者,在该次上行传输中使用辅助上行链路时,上行载波标识可以取1。
应理解,当该终端设备使用SUL上行传输时,对应的上行载波可以是SUL载波,当该终端设备使用普通UL上行传输时,对应的上行载波可以是普通UL载波。
在该实现方式中,第一参数可以根据设备特性灵活配置,第二参数的取值可以根据是否支持辅助上行来确定。
结合第一方面,在第一方面的某些实现方式中,该RA-RNTI可以根据该第一参数、第二参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识和该RO在频域上的索引确定。
结合第一方面,在第一方面的某些实现方式中,该RA-RNTI可以是根据该第一参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和发送导频序列的上行载波标识确定的。
发送导频序列的上行载波标识的取值可以是0或1,发送导频序列的上行载波标识的取值与上行载波的类型可以是对应的。比如,若UL载波为普通上行(normal UL,NUL)载波,则ul_carrier_id为0,若UL载波为辅助上行(supplementary uplink,SUL)载波,则ul_carrier_id为1。在该实现方式中,第一参数可以根据设备特性灵活配置。
结合第一方面,在第一方面的某些实现方式中,该RA-RNTI、该第一参数、该RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,a为该第一参数,若ul_carrier_id=0时,a的取值范围为{1,2,3,4,5,6},若ul_carrier_id=1时,a的取值范围为{2,3,4,5,6}。
应理解,a的取值不限于上述举例。
结合第一方面,在第一方面的某些实现方式中,该RA-RNTI、该第一参数、该RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该 发送导频序列的上行载波标识,ul_carrier_id=0或1,offset为该第一参数,offset的取值范围为(8960,17920,26880,35840,44800,53760,62720)。
结合第一方面,在第一方面的某些实现方式中,该设备支持的特性包括支持小数据传输(small data transmission,SDT)、支持切片(slicing)、支持覆盖增强(coverage enchancement,CE)。
第二方面,提供了一种通信方法,该方法可以包括:网络设备发送第一参数的目标取值,该第一参数的目标取值为该第一参数的候选取值中的一个,该第一参数的候选取值与设备特性对应,该设备特性包括设备的类型,和/或,设备支持的特性,该终端设备为待随机接入该网络设备的终端设备;该网络设备通过RA-RNTI加扰第一消息,该第一消息包括随机接入响应消息的调度信息或随机接入响应消息,该RA-RNTI是根据该第一参数确定的;该网络设备发送该第一消息。
结合第二方面,在第二方面的某些实现方式中,第一参数的目标取值是根据终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
结合第二方面,在第二方面的某些实现方式中,该设备特性的数目为N,第一通信特性对应的该第一参数的候选取值范围为1至N,其中,N为正整数,该第一参数的候选取值为正整数,该第一通信特性包括至少一个设备特性。
结合第二方面,在第二方面的某些实现方式中,该RA-RNTI可以根据该第一参数和第二参数确定。
其中,第二参数可以是上行载波标识,可以用于指示终端设备是否支持或者使用辅助上行链路(SUL,supplementary uplink)。示例地,该发送上行载波标识可以有0和1的取值,其中该终端设备不支持,或者,在该次上行传输中不使用辅助上行链路时(也就是使用普通上行链路),上行载波标识可以取0;该终端设备支持,或者,在该次上行传输中使用辅助上行链路时,上行载波标识可以取1。
应理解,当该终端设备使用SUL上行传输时,对应的上行载波可以是SUL载波,当该终端设备使用普通UL上行传输时,对应的上行载波可以是普通UL载波。
在该实现方式中,第一参数可以根据设备特性灵活配置,第二参数的取值可以根据是否支持辅助上行来确定。
结合第二方面,在第二方面的某些实现方式中,该RA-RNTI可以根据该第一参数、第二参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识和该RO在频域上的索引确定。
结合第二方面,在第二方面的某些实现方式中,该RA-RNTI是根据该第一参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和发送导频序列的上行载波标识确定的。
发送导频序列的上行载波标识的取值可以是0或1,发送导频序列的上行载波标识的取值与上行载波的类型可以是对应的。比如,若UL载波为普通上行(normal UL,NUL)载波,则ul_carrier_id为0,若UL载波为辅助上行(supplementary uplink,SUL)载波,则ul_carrier_id为1。在该实现方式中,第一参数可以根据设备特性灵活配置。
结合第二方面,在第二方面的某些实现方式中,该RA-RNTI、该第一参数、该RO的 第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,a为该第一参数,若ul_carrier_id=0时,a的取值范围为{1,2,3,4,5,6},若ul_carrier_id=1时,a的取值范围为{2,3,4,5,6}。
结合第二方面,在第二方面的某些实现方式中,该RA-RNTI、该第一参数、所述RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,offset为该第一参数,offset的取值范围为(8960,17920,26880,35840,44800,53760,62720)。
结合第二方面,在第二方面的某些实现方式中,该设备支持的特性包括支持小数据传输SDT、支持切片、支持覆盖增强CE。
第三方面,提供一种通信装置,该通信装置可以包括处理单元和收发单元,收发单元用于获取第一参数的目标取值,该第一参数的目标取值为该第一参数的候选取值中的一个,该第一参数的候选取值与设备特性对应,该设备特性包括设备的类型,和/或,设备支持的特性,该终端设备为待随机接入该网络设备的终端设备,收发单元还用于根据随机接入无线网络临时标识RA-RNTI接收第一消息,该第一消息包括随机接入响应消息的调度信息或随机接入响应消息,该RA-RNTI是根据该第一参数确定的。
结合第三方面,在第三方面的某些实现方式中,第一参数的目标取值是根据终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
结合第三方面,在第三方面的某些实现方式中,该设备特性的数目为N,第一通信特性对应的该第一参数的候选取值范围为1至N,其中,N为正整数,该第一参数的候选取值为正整数,该第一通信特性包括至少一个设备特性。
结合第三方面,在第三方面的某些实现方式中,该RA-RNTI可以根据该第一参数和第二参数确定。
其中,第二参数可以是上行载波标识,可以用于指示终端设备是否支持或者使用辅助上行链路(SUL,supplementary uplink)。示例地,该发送上行载波标识可以有0和1的取值,其中该终端设备不支持,或者,在该次上行传输中不使用辅助上行链路时(也就是使用普通上行链路),上行载波标识可以取0;该终端设备支持,或者,在该次上行传输中使用辅助上行链路时,上行载波标识可以取1。
应理解,当该终端设备使用SUL上行传输时,对应的上行载波可以是SUL载波,当该终端设备使用普通UL上行传输时,对应的上行载波可以是普通UL载波。
在该实现方式中,第一参数可以根据设备特性灵活配置,第二参数的取值可以根据是 否支持辅助上行来确定。
结合第三方面,在第三方面的某些实现方式中,该RA-RNTI可以根据该第一参数、第二参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识和该RO在频域上的索引确定。
结合第三方面,在第三方面的某些实现方式中,该RA-RNTI是根据该第一参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和发送导频序列的上行载波标识确定的。
发送导频序列的上行载波标识的取值可以是0或1,发送导频序列的上行载波标识的取值与上行载波的类型可以是对应的。比如,若UL载波为普通上行(normal UL,NUL)载波,则ul_carrier_id为0,若UL载波为辅助上行(supplementary uplink,SUL)载波,则ul_carrier_id为1。在该实现方式中,第一参数可以根据设备特性灵活配置。
结合第三方面,在第三方面的某些实现方式中,该RA-RNTI、该第一参数、该RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,a为该第一参数,若ul_carrier_id=0时,a的取值范围为{1,2,3,4,5,6},若ul_carrier_id=1时,a的取值范围为{2,3,4,5,6}。
结合第三方面,在第三方面的某些实现方式中,该RA-RNTI、该第一参数、所述RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,offset为该第一参数,offset的取值范围为(8960,17920,26880,35840,44800,53760,62720)。
结合第三方面,在第三方面的某些实现方式中,结合第二方面,在第二方面的某些实现方式中,该设备支持的特性包括支持小数据传输SDT、支持切片、支持覆盖增强CE。
第四方面,提供一种通信装置,该通信装置可以包括处理单元和收发单元,收发单元用于发送第一参数的目标取值,该第一参数的目标取值为该第一参数的候选取值中的一个,该第一参数的候选取值与设备特性对应,该设备特性包括设备的类型,和/或,设备支持的特性,该终端设备为待随机接入该网络设备的终端设备;处理单元用于通过RA-RNTI加扰第一消息,该第一消息包括随机接入响应消息的调度信息或随机接入响应消息,该RA-RNTI是根据该第一参数确定的;收发单元还用于发送该第一消息。
结合第四方面,在第四方面的某些实现方式中,第一参数的目标取值是根据终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
结合第四方面,在第四方面的某些实现方式中,该设备特性的数目为N,第一通信特 性对应的该第一参数的候选取值范围为1至N,其中,N为正整数,该第一参数的候选取值为正整数,该第一通信特性包括至少一个设备特性。
结合第四方面,在第四方面的某些实现方式中,该RA-RNTI可以根据该第一参数和第二参数确定。
其中,第二参数可以是上行载波标识,可以用于指示终端设备是否支持或者使用辅助上行链路(SUL,supplementary uplink)。示例地,该发送上行载波标识可以有0和1的取值,其中该终端设备不支持,或者,在该次上行传输中不使用辅助上行链路时(也就是使用普通上行链路),上行载波标识可以取0;该终端设备支持,或者,在该次上行传输中使用辅助上行链路时,上行载波标识可以取1。
应理解,当该终端设备使用SUL上行传输时,对应的上行载波可以是SUL载波,当该终端设备使用普通UL上行传输时,对应的上行载波可以是普通UL载波。
在该实现方式中,第一参数可以根据设备特性灵活配置,第二参数的取值可以根据是否支持辅助上行来确定。
结合第四方面,在第四方面的某些实现方式中,该RA-RNTI可以根据该第一参数、第二参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识和该RO在频域上的索引确定。
结合第四方面,在第四方面的某些实现方式中,该RA-RNTI是根据该第一参数、该RO的第一个正交频分复用OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和发送导频序列的上行载波标识确定的。
发送导频序列的上行载波标识的取值可以是0或1,发送导频序列的上行载波标识的取值与上行载波的类型可以是对应的。比如,若UL载波为普通上行(normal UL,NUL)载波,则ul_carrier_id为0,若UL载波为辅助上行(supplementary uplink,SUL)载波,则ul_carrier_id为1。在该实现方式中,第一参数可以根据设备特性灵活配置。
结合第四方面,在第四方面的某些实现方式中,该RA-RNTI、该第一参数、该RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,a为该第一参数,若ul_carrier_id=0时,a的取值范围为{1,2,3,4,5,6},若ul_carrier_id=1时,a的取值范围为{2,3,4,5,6}。
结合第四方面,在第四方面的某些实现方式中,该RA-RNTI、该第一参数、所述RO的第一个OFDM符号的标识、该RO的第一个时隙的标识、该RO在频域上的索引和该发送导频序列的上行载波标识满足下述关系:
其中,s_id为该RO的第一个OFDM符号的标识,0≤s_id<14,t_id为该RO的第一个时隙的标识,0≤t_id<80,f_id为该RO在频域上的索引,0≤f_id<8,ul_carrier_id为该发送导频序列的上行载波标识,ul_carrier_id=0或1,offset为该第一参数,offset的取值范围为(8960,17920,26880,35840,44800,53760,62720)。
结合第四方面,在第四方面的某些实现方式中,该设备支持的特性包括支持小数据传输SDT、支持切片、支持覆盖增强CE。
第五方面,提供一种计算机可读介质,该计算机可读介质存储用于通信装置执行的程序代码,该程序代码包括用于执行第一方面或第二方面,或,第一方面或第二方面中任一可能的实现方式,或,第一方面或第二方面中所有可能的实现方式的方法中的通信方法的指令。
第六方面,提供了一种包含指令的计算机程序产品,其在计算机上运行时,使得计算机执行上述第一方面或第二方面,或,第一方面或第二方面中任一可能的实现方式,或,第一方面或第二方面中所有可能的实现方式的方法。
第七方面,提供了一种通信系统,该通信系统包括具有实现上述第一方面或第二方面,或,第一方面或第二方面中任一可能的实现方式,或,第一方面或第二方面中所有可能的实现方式的方法及各种可能设计的功能的装置。
第八方面,提供了一种处理器,用于与存储器耦合,用于执行上述第一方面或第二方面,或,第一方面或第二方面中任一可能的实现方式,或,第一方面或第二方面中所有可能的实现方式中的方法。
第九方面,提供了一种芯片,芯片包括处理器和通信接口,该通信接口用于与外部器件或内部器件进行通信,该处理器用于实现上述第一方面或第二方面,或,第一方面或第二方面或第三方面中任一可能的实现方式,或,第一方面或第二方面中所有可能的实现方式中的方法。
可选地,该芯片还可以包括存储器,该存储器中存储有指令,处理器用于执行存储器中存储的指令或源于其他的指令。当该指令被执行时,处理器用于实现上述第一方面或第二方面或其任意可能的实现方式中的方法。
可选地,该芯片可以集成在终端上。
图1是适用于本申请实施例的一种通信系统的架构示意图。
图2示出了一种RA-RNTI取值范围的示意图。
图3示出了又一种RA-RNTI取值范围的示意图。
图4示出了本申请实施例提出的一种通信方法的示意图。
图5示出了本申请实施例提出的一种通信方法的流程示意图。
图6示出了本申请实施例的一种通信装置的示意性框图。
图7示出了本申请实施例的另一种通信装置的示意性框图。
下面将结合附图,对本申请中的技术方案进行描述。
本申请实施例可以应用于各种通信系统,例如无线局域网系统(wireless local area network,WLAN)、窄带物联网系统(narrow band-internet of things,NB-IoT)、全球移动通信系统(global system for mobile communications,GSM)、增强型数据速率GSM演进系统(enhanced data rate for GSM evolution,EDGE)、宽带码分多址系统(wideband code division multiple access,WCDMA)、码分多址2000系统(code division multiple access,CDMA2000)、时分同步码分多址系统(time division-synchronization code division multiple access,TD-SCDMA),长期演进系统(long term evolution,LTE)、卫星通信、第五代(5th generation,5G)系统或者将来出现的新的通信系统等。
移动通信技术已经深刻地改变了人们的生活,但人们对更高性能的移动通信技术的追求从未停止。为了应对未来爆炸性的移动数据流量增长、海量移动通信的设备连接、不断涌现的各类新业务和应用场景,5G移动通信系统应运而生。国际电信联盟(international telecommunication union,ITU)为5G以及未来的移动通信系统定义了三大类应用场景:增强型移动宽带(enhanced mobile broadband,eMBB)、高可靠低时延通信(ultra reliable and low latency communications,URLLC)以及海量机器类通信(massive machine type communications,mMTC)。
典型的eMBB业务有:超高清视频、增强现实(augmented reality,AR)、虚拟现实(virtual reality,VR)等,这些业务的主要特点是传输数据量大、传输速率很高。典型的URLLC业务有:工业制造或生产流程中的无线控制、无人驾驶汽车和无人驾驶飞机的运动控制以及远程修理、远程手术等触觉交互类应用,这些业务的主要特点是要求超高可靠性、低延时,传输数据量较少以及具有突发性。典型的mMTC业务有:智能电网配电自动化、智慧城市等,主要特点是联网设备数量巨大、传输数据量较小、数据对传输时延不敏感,这些mMTC终端需要满足低成本和非常长的待机时间的需求。
不同业务对移动通信系统的需求不同,如何更好地同时支持多种不同业务的数据传输需求,是当前5G移动通信系统所需要解决的技术问题。例如,如何同时支持mMTC业务和eMBB业务,或者同时支持URLLC业务和eMBB业务。
5G标准对mMTC的研究还没有广泛开展。
目前,标准中将mMTC业务的用户设备(user equipment,UE)称为低复杂度的UE(reduced capability UE,REDCAP UE),或窄带宽用户设备,或物联设备,或低端智能手持终端。该类UE可能在带宽、功耗、天线数等方面比其他UE复杂度低一些,如带宽更窄、功耗更低、天线数更少等。该类UE也可以称为轻量版的终端设备(NR light,NRL)。mMTC用户设备支持的最大带宽小于100MHz。需要说明的是,本申请中的mMTC用户设备不只是机器类通信的设备,也可以是智能手持终端。
本申请实施例应用的移动通信系统的架构示意图。如图1所示,该移动通信系统包括无线接入网设备120即网络设备120和至少一个终端设备(如图1中的终端设备130和终端设备140和终端设备150)。终端设备通过无线的方式与无线接入网设备相连,无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备,也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上,还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的,也可以是可移动的。图1只是示意图,该通信系统中还可以包括其它网络设备,如还可以包括无线中继设备和无线回传设备,在图1中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
应理解,本申请通信系统中的信息发送端可以是网络设备,也可以是终端设备,信息 接收端可以是网络设备,也可以是终端设备,本申请对此不作限定。
本申请实施例以网络设备与终端设备作为交互双方为例进行方案陈述,对此不作限定。
无线接入网设备是终端设备通过无线方式接入到该移动通信系统中的接入设备,可以是基站NodeB、演进型基站(evolved node B,eNodeB)、5G移动通信系统中的基站、未来移动通信系统中的基站或WiFi系统中的接入节点等,本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端(Terminal)、用户设备UE、移动台(mobile station,MS)、移动终端(mobile terminal,MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。
无线接入网设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和卫星上。本申请的实施例对无线接入网设备和终端设备的应用场景不做限定。
本申请的实施例可以适用于下行信号传输,也可以适用于上行信号传输,还可以适用于设备到设备(device to device,D2D)的信号传输。对于下行信号传输,发送设备是无线接入网设备,对应的接收设备是终端设备。对于上行信号传输,发送设备是终端设备,对应的接收设备是无线接入网设备。对于D2D的信号传输,发送设备是终端设备,对应的接收设备也是终端设备。本申请的实施例对信号的传输方向不做限定。
无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信,也可以通过免授权频谱(unlicensed spectrum)进行通信,也可以同时通过授权频谱和免授权频谱进行通信。无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6G以下的频谱进行通信,也可以通过6G以上的频谱进行通信,还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对无线接入网设备和终端设备之间所使用的频谱资源不做限定。
为了便于理解本申请,对随机接入过程进行简单描述。随机接入过程如下:
终端设备搜索同步信号和物理广播信道(synchronization Signal and PBCH,SSB),终端设备通过搜索SSB,获取网络设备发送的主信息块(master information block,MIB)。终端设备根据MIB获取控制资源集合(control resource set,CORESET)的时域资源与频域资源,终端设备可以在CORESET上检测调度系统信息块(system information block,SIB)的下行控制信息(downlink control information,DCI),在DCI指示的时频位置上接收SIB1,如此,即可接收SIB1中指示的初始上行链路带宽部分(initial uplink bandwidth part,Initial UL BWP),初始下行链路带宽部分(initial downlink bandwidth part,Initial DL BWP),随机接入前导码列表,随机接入时机列表等信息。
根据SIB1,终端设备在与SSB关联的随机接入时机(RACH occasion,RO)资源中发送承载随机接入序列的物理随机接入信道(physical random-access channel,PRACH,即Msg1);
如果基站(网络设备的一例)成功接收到了随机接入序列并且允许UE接入,则在预配置的随机接入响应(Random access response,RAR)的窗口(window)内,给UE发送RAR,即Msg2;
同时,UE在预配置的RAR window内,监听在物理层下行控制信道(Physical downlink control channel,PDCCH)上传输的下行控制信息(downlink control information,DCI),该DCI用于指示UE从物理下行共享信道(physical downlink shared channel,PDSCH)承载的媒体接入控制(media access control,MAC)协议数据单元(protocol Data Unit,PDU)中获取RAR信息。
应理解,如果由于不同UE之间选择的随机接入序列冲突,或者信道条件差等原因,导致基站无法接收到preamble序列,则基站不会发送RAR信息,那么UE在RAR window中就不会检测到DCI和MAC RAR,那么本次随机接入失败。
终端在成功检测到DCI后,接收随机接入响应RAR(即Msg2),按照随机接入响应中的上行授权UL grant指示的时频资源发送物理上行共享信道(physical uplink shared channel,PUSCH,即Msg3),网络设备再向终端设备发送DCI,该DCI指示承载竞争解决消息,即Msg4,的时频资源,终端设备检测检测该DCI,并接收Msg4。
需要注意的是,在无线资源控制(radio resource control,RRC)建立连接之前,UE需要在CORESET 0内接收:调度SIB1的PDCCH,承载SIB1的PDSCH,调度SI的PDCCH,承载SI的PDSCH,调度Msg2的PDCCH,承载Msg2的PDSCH,调度Msg3的PDCCH,调度Msg4的PDCCH,承载Msg4的PDSCH。在无线资源控制(radio resource control,RRC)建立连接之前,UE需要在initial UL BWP内发送承载Msg1的PUSCH,和承载Msg3的PUSCH。
为了方便理解本申请实施例,下面对本申请涉及到的相关概念作简单介绍:
1.本申请中的UE可以分为第一类型终端设备和第二类型终端设备,第一类型终端设备例如为低复杂度的UE(reduced capability UE,REDCAP UE),第二类型终端设备可以为legacy UE,如eMBB UE。
第一类型终端设备和第二类型终端设备的特征不同,所述特征包括以下一种或者多种:
带宽、支持或配置的资源数、发射天线端口数和/或接收天线端口数、射频通道数、混合自动重传请求(hybrid automatic repeat request,HARQ)进程数、支持的峰值速率、应用场景、时延要求、处理能力、协议版本、双工方式、业务等。以下对第一特征进行详细描述。
带宽,或者信道带宽,或者终端设备支持或配置的最大信道带宽,第一类型终端设备和第二类型终端设备的带宽不同,例如:第一类型终端设备的带宽可以是20MHz或10MHz或5MHz,第二类型终端设备的带宽可以是100MHz。可以理解,随着通信技术的发展,第一类型终端设备支持的最大信道带宽可能不再是20MHz或10MHz或5MHz,而是演变成更宽或者更窄的带宽例如3MHz,25MHz,50MHz。
支持或配置的资源数,所述资源数可以是RB,RE,子载波,RB组,REG bundle,控制信道元素,子帧,无线帧,时隙,迷你时隙和/或符号数目,第一类型终端设备和第二类型终端设备支持或配置的资源数不同,例如:第一类型终端设备支持的资源数为48RB,第二类型终端设备支持的资源数为96RB。
发射天线端口数和/或接收天线端口数,即第一类型终端设备的发射天线端口数和/或接收天线端口数与第二类型终端设备不同,例如:第一类型终端设备的发射天线端口数可以是1,接收天线的端口数可以是2,第二类型终端设备的发射天线端口数可以是2,接收天线的端口数可以是4。
射频通道数,即第一类型终端设备的射频通道数与第二类型终端设备不同,例如:第一类型终端设备的射频通道数可以是1个,第二类型终端设备的射频通道数可以是2个。
HARQ进程数,即第一类型终端设备支持的HARQ进程数与第二类型终端设备不同,例如:第一类型终端设备的HARQ进程数可以是8,第二类型终端设备的HARQ进程数可以是16。
支持的峰值速率,即第一类型终端设备和第二类型终端设备的最大峰值速率不同,例如:第一类型终端设备支持的最大峰值速率可以是100Mbps,第二类型终端设备支持的峰值速率可以是200Mbps。
应用场景,即第一类型终端设备和第二类型终端设备是针对不同应用场景服务的,例如:第一类型终端设备应用于工业无线传感,视频监控,可穿戴设备等,第二类型终端设备应用于移动通信,视频上网等。
时延要求,即第一类型终端设备和第二类型终端设备对传输时延的要求不同,例如:第一类型终端设备的时延要求可以是500毫秒,第二类型终端设备的时延要求可以是100毫秒。
处理能力,及第一类型终端设备和第二类型终端设备在不同的子载波间隔(subcarrier space,SCS)条件下,对于信道或数据的处理时序,处理速度不同,例如:第一类型终端设备的不支持复杂的运算,所述复杂的运算可以包括:人工智能(artificial intelligence,AI)、虚拟现实(virtual reality,VR)渲染,第二类型终端设备支持复杂的运算,或者理解为,第一类型终端设备的处理能力低于第二类型终端设备。
协议版本,即第一类型终端设备和第二终端设备属于不同协议版本的终端设备,例如:第一类型终端设备支持的协议版本为Release 17及Release 17之后的协议版本,第二类型终端设备支持的协议版本为Release 17之前的协议版本,例如Release 15或Release 16。
双工方式,所述双工方式包括半双工和全双工,例如:第一类型终端设备采用半双工的模式工作,第二类型终端设备采用全双工的模式工作。
业务,所述业务包括但不限于物联应用,例如视频监控,移动宽带MBB等,例如:第一类型终端设备支持的业务为时视频监控,第二类型终端设备支持的业务为移动宽带MBB。本申请实施例对此不做限定。
应理解,其他类型的,或未来新类型的同样支持本申请技术方案的终端设备也在本申请保护范围之内。
本申请中的第一终端设备可以是第一类型终端设备中的一例,第二终端设备可以是第二类型终端设备中的一例。
2.初始下行链路带宽部分(initial downlink bandwidth part,Initial DL BWP):在SIB1中指示,频率范围包含CORESET,但是在Msg4接收完成之后才会生效。
3.初始上行链路带宽部分(initial uplink bandwidth part,Initial UL BWP):在SIB1中指示,初始接入过程中涉及的上行信道PRACH,Msg3,Msg4的HARQ-ACK反馈都在initial UL BWP的范围进行。
4.PRACH资源:PRACH资源可以是PRACH时域资源,PRACH频域资源和PRACH码域资源(preamble)。PRACH的时域和频域即为RO时频域资源。
接入网设备可以通过SIB1广播RACH配置信息,RACH配置信息可以包括RACH配置索引(prach-ConfigurationIndex),其中,RACH配置索引用于指示PRACH时域资源配置信息,该索引的取值范围可以为0~255。终端设备通过该RACH配置索引等信息,得到RO所在的时域位置;PRACH的频域配置可以由RRC层配置,其中可以包括参数msg1-FDM,用于指示频域上RO的个数,时域上的RO从较低频域开始,从0开始编号,目前最大支持编号7。RO对应的编号为f_id。
5.设备特性:可以是网络设备或者终端设备支持SDT、切片、控制元素(control element,CE)增强等;可以是终端的类型,比如,RedCap;也可以是两者的叠加,比如,RedCap终端设备支持SDT。
应理解,低复杂度终端设备是相对的概念,本申请对此不做限制。示例地,未来可能发展出的新型终端设备,其在带宽、天线数量、设备功耗等其中至少一个方面的特征比现有的legacy UE复杂,届时legacy UE将作为本申请中的第一类型终端设备,所述新型终端设备将作为本申请中的第二类型终端设备,本申请的实施例依然适用,在本申请保护范围之内。
6.辅助上行链路(supplementary uplink,SUL):一个小区(Cell)一般都包含上行载波(uplink carrier)和下行载波(downlink carrier),上行载波和下行载波在同一个频段(frequency band)内。但是在5G时代,所用的带宽和频点都比较高,比如毫米波等。频段越高,信号传输损耗越大。由于UE的发射功率是受限的,这就会导致UE的上行覆盖受限制。SUL技术通过提供一个辅助上行链路(一般处于低频段,如LTE频段)来保证UE的上行覆盖。UE正常的上行链路可以称为UL,辅助上行链路称为SUL。SUL可以采用1.8G频段,频点较低,信号损耗较小,可以保证UL的覆盖。UE可以在UL和SUL之间动态选择发送链路,但是在同一个时刻,UE只能选择其中一种链路发送数据,不能同时在两种上行链路上发送上行数据。
应理解,本申请实施例中的接入网设备也可以称为网络设备,本申请对此无特殊限定。
在上述随机接入过程中,终端先向接入网设备发送导频序列(preamble),接入网设备在接收到终端设备发送的导频序列之后,向终端设备发送RAR。终端设备在发送完导频序列之后的第一个PDCCH occasion启动RAR窗口,并在RAR窗口内监听用于调度RAR的PDCCH,该PDCCH采用随机接入无线网络临时标识(random access radio network temporary identifier,RA-RNTI)进行加扰。终端设备根据监听到的PDCCH获取RAR,并基于RAR消息的调度发送随机接入过程中的第三消息(Msg 3),Msg3用于发送RRC建立连接请求消息或RRC连接恢复请求消息等层3(L3)或层2(L2)信息。
在该随机接入过程中,终端设备和接入网设备基于RO的信息计算RA-RNTI的规则如下:
RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中,s_id是RO的第一个OFDM符号的标识,0≤s_id<14。t_id是RO的第一个 时隙的标识,0≤t_id<80,t_id可以根据子载波间隔(sub-carrier spacing,SCS)确定。f_id是RO在频域上的索引,也就是RO在频域上的编号,频域编号从0开始,最大为7,即0≤f_id<8。ul_carrier_id是发送导频序列的UL载波标识,若UL载波为普通上行(normal UL,NUL)载波,则ul_carrier_id为0,若UL载波为辅助上行(supplementary uplink,SUL)载波,则ul_carrier_id为1。RA-RNTI的取值范围如图2所示。
以分别对普通UE(上述第二类型终端设备的一例)和RedCap UE(上述第一类型终端设备的一例)计算RA-RNTI为例,在频域上,由于两组RACH资源的频域上是独立编号,频域编号均为0开始,最大为7。因此即使两组RACH资源在频域上的资源不同,也可能存在两个RO的频域编号相同的情况,这会导致根据两个RO计算得到的RA-RNTI值相同,若选择的导频序列一致,则终端设备无法区分出接入网设备发送的经过RA-RNTI加扰的调度RAR的PDCCH,是给普通UE还是RedCap UE的。这增大了发生随机接入冲突的可能性,随机接入失败的概率较高,接入时延较大。
上述计算规则中,通过不同维度,如时域s_id,t_id,频域f_id,以及载波域ul_carrier_id,来确定PRACH资源,进而通过RA-RNTI加扰调度RAR的PDCCH。按照当前RA-RNTI的计算方式,若引入新的特性或终端类型,可以在上述计算规则的基础上增加新的取值,如对于使用两步RACH的情况,两步RACH的RNTI(message b radio network temporary identifier,MSGB-RNTI)的计算方式为:
MSGB-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2。
其中14×80×8×2为针对两步RACH引入的偏移量(17920)。
根据上述计算方式,对于使用两步RACH且不支持SUL的终端设备,MSGB-RNTI的取值范围为17921~26880,也就是说,若通信网络(或参与通信的设备)不支持SUL,则RNTI的范围8961~17920不会被使用,如图3所示。即通过上述方式实现的RNTI区分会导致RNTI资源的极大浪费。
目前RA-RNTI取值范围为十六进制0001-FFF2,即十进制1-65522。如果按照上述方法继续为不同的终端设备类型和/或终端业务类型引入新的RA-RNTI取值(例如在计算RA-RNTI时不断增加更大的偏移值),则会超出RA-RNTI的最大取值范围,同时对于不支持的设备特性,使用上述RNTI扩展方法,会导致RNTI资源的浪费。
针对上述问题,本申请实施例提出一种通信方法,如图4所示,可以包括如下步骤:
步骤401:网络设备发送第一参数的目标取值,对应地,终端设备接收第一参数的目标取值。
其中,第一参数的目标取值为第一参数的候选取值中的一个,第一参数的候选取值与设备特性对应,设备特性包括参与通信的终端设备的类型,和/或,该终端设备或参与通信的网络设备支持的特性,该终端设备可以是待随机接入所述网络设备的终端设备。
可以理解的是,网络设备可以同时与多个终端设备通信,该多个终端设备可以是来自同一个小区的,也可以是来自不同小区的,本申请对此不作限定。
网络设备向终端设备发送第一参数的目标取值,可以是以广播的形式发送,比如,可以将第一参数的目标取值承载在SIB1或者SIB2消息中以广播的形式发送。应理解,其他可以发送该第一参数的目标取值的方式也应在本申请保护范围之内,比如,组播、单播等。 当待发送的第一参数的目标取值的数量为多个时,网络设备可以一次发送,也可以分次发送,本申请对此不作限定。
第一参数的目标取值可以是根据设备特性和对应关系确定的,该对应关系可以包括设备特性和第一参数的候选取值之间的关系。设备的类型可以是终端设备的类型,例如可以包括:第一类型终端设备和第二类型终端设备。设备支持的特性可以是设备支持SDT、支持切片、支持CE增强。
具体的,网络设备可以根据设备支持的特性以及特性的数量灵活地配置第一参数。网络设备确定第一参数的目标取值时,可以考虑一个特性,也可以考虑多个特性。
1)网络设备确定第一参数的目标取值时,可以考虑一个特性。例如,网络设备可以根据终端设备的类型以及该对应关系确定第一参数的目标取值。若终端设备属于第一类型终端设备,网络设备可以确定该终端设备对应的第一参数的目标取值为1;若该终端设备属于第二类型终端设备,则网络设备可以确定该终端设备对应的第一参数的目标取值为2。再例如,网络设备可以根据自身支持的特性以及该对应关系确定第一参数的目标取值。若网络设备支持SDT,可以确定该第一参数的目标取值为3;若网络设备支持切片,则可以确定该第一参数的目标取值为4。
2)网络设备确定第一参数的目标取值时,可以考虑多个特性。例如,可以考虑终端设备的多个特性,比如,终端设备为第一类型终端设备,同时支持SDT,则对应的第一参数的目标取值可以是1;终端设备为第一类型终端设备,同时支持SDT和CE增强,则对应的第一参数的目标取值可以是2。
应理解,上述取值仅作为示例而非限定。
示例地,对应关系的一个例子可以是,设备特性的数目为N,第一通信特性对应的第一参数的候选取值范围为1至N,其中,N为正整数,第一参数的候选取值为正整数,该第一通信特性包括至少一个设备特性。
该对应关系可以是固定的,比如,CE增强对应第一参数取值为1,切片对应第一参数取值为2,支持SDT对应第一参数取值为3,网络设备根据该固定的对应关系和待随机接入的终端设备的设备特性确定第一参数的目标取值。可以理解的是,当该对应关系固定时,网络设备和终端设备可以存储该对应关系,根据该对应关系和设备特性自行确定第一参数的取值;网络设备也可以将第一参数的多个候选取值发送给终端设备,终端设备在该多个候选取值中,根据该对应关系和设备特性自行确定第一参数的取值。本申请对此不作限定。
该对应关系也可以是灵活配置的,比如,在第一次随机接入过程中,支持SDT对应第一参数取值为1,在第二次随机接入过程中,支持SDT对应第一参数取值为2。当该对应关系为灵活配置时,网络设备根据该对应关系,和,待随机接入的终端设备的设备特性、网络设备的设备特性,从第一参数的多个候选取值中确定第一参数的目标取值,并将该目标取值发送给终端设备。本申请对此不作限定。
一种可能的方式中,网络设备可以将对应关系指示给终端设备,终端设备根据该对应关系和设备特性确定第一参数的取值。
也就是说,第一参数的取值可以是网络设备确定的,发送给终端设备;也可以是网络设备和终端设备分别自行确定的。本申请对此不作限定。
步骤402:网络设备通过RA-RNTI加扰第一消息。
其中,该RA-RNTI可以是网络设备根据第一参数确定的。
比如,RA-RNTI可以是根据第一参数、RO的第一个正交频分复用OFDM符号的标识、RO的第一个时隙的标识、RO在频域上的索引和发送导频序列的上行载波标识确定的。
上述各参数之间可以满足下述关系1:
其中,s_id为RO的第一个OFDM符号的标识,0≤s_id<14,t_id为RO的第一个时隙的标识,0≤t_id<80,f_id为RO在频域上的索引,0≤f_id<8,ul_carrier_id为发送导频序列的上行载波标识,ul_carrier_id=0或1,a为第一参数,若ul_carrier_id=0时,a的取值为{1,2,3,4,5,6},若ul_carrier_id=1时,a的取值为{2,3,4,5,6}。也就是说,当ul_carrier_id=0时,a可以取1;ul_carrier_id=1时,a不为1。具体的,网络设备根据自己支持的特性以及特性数灵活的配置第一参数。这可以理解为,网络设备若配置SUL载波,则网络设备a的取值不可以为1。又例如,在某一时刻,当网络设备由支持SUL变为不支持时,则a的取值可以为1。具体的,a名称也可以为feature_id或者其他名字,具体不做限制。
应理解,在另一些情况下,a的取值也可以为0。示例地,当第一类型终端接收RAR的频域资源与第二类型终端设备的频域资源不同时,比如initial DL BWP为第一类型终端设备专用的频域资源,或者第一类型终端设备的initial DL BWP与第二类型终端的initial DL BWP不同;又或者第一类型终端设备在接收RAR时有单独的公共搜索空间,则第一类型终端设备与第二类型终端设备即使不通过RA-RNTI对资源进行区分,也可以毫无混淆的获取相应的RAR信息。这些情况中a取值可以为0。
一种可能的方式,网络设备向终端设备发送RACH配置信息时,可以显示或者隐式指示initial DL BWP,或者,公共搜索空间,是否为单独配置的。若为单独配置的,则a可以为0。示例地,网络设备可以发送指示信息指示a的取值,网络设备也可以不发送指示信息,比如,在发送配置信息时不携带用于指示a的取值的相关字段,表明取值为0,也就是说,当a的字段没有出现时,则可以认为取值为0.
但是,initial DL BWP或者搜索空间即使为单独配置的,若第一类型终端设备的频域资源和第二类型终端设备的频域资源有重叠,依然会有RA-RNTI混淆问题,这种情况下a的取值可以不为0。
另外,本申请各实施例中上述各参数的取值均为整数。
根据上述关系,a的取值与RA-RNTI的取值范围的对应关系可以如表1所示:
表1 a的取值与RA-RNTI的取值范围的对应关系
应理解,表1只作为一种示例而非限定,可能以表1的全部或部分内容作为实施。
可选地,上述各参数之间也可以满足下述关系2:
其中,s_id为RO的第一个OFDM符号的标识,0≤s_id<14,t_id为RO的第一个时隙的标识,0≤t_id<80,f_id为RO在频域上的索引,0≤f_id<8,ul_carrier_id为发送导频序列的上行载波标识,ul_carrier_id=0或1,offset为第一参数,offset的取值范围为(8960,17920,26880,35840,44800,53760),也可以理解为8960(14*80*8)的整数倍,但使得计算RA-RNTI的结果不超过RA-RNTI的最大取值。
可选地,上述各参数之间也可以满足下述关系3:
其中,s_id为RO的第一个OFDM符号的标识,0≤s_id<14,t_id为RO的第一个时隙的标识,0≤t_id<80,f_id为RO在频域上的索引,0≤f_id<8,ul_carrier_id为发送导频序列的上行载波标识,ul_carrier_id=0或1,a为第一参数,a的取值范围为{0,1}。
一种可能的方式中,该RA-RNTI可以是网络设备根据第一参数和第三参数确定的。
比如,RA-RNTI可以是根据第一参数、第三参数、RO的第一个正交频分复用OFDM符号的标识、RO的第一个时隙的标识、RO在频域上的索引和发送导频序列的上行载波标识确定的。
上述各参数之间可以满足下述关系4:
其中,s_id为RO的第一个OFDM符号的标识,0≤s_id<14,t_id为RO的第一个时隙的标识,0≤t_id<80,f_id为RO在频域上的索引,0≤f_id<8,ul_carrier_id为发送导频序列的上行载波标识,ul_carrier_id=0或1,a为第一参数,a的取值范围为{1,2,3,4,5,6},k为第三参数,k的取值范围为{0,1}。
其中k表明某一特性是否存在,a与终端设备或网络设备已经支持的特性数目相关联,对于不同特性取值不同。示例地,比如当ul_carrier_id为0,k=0时,第一小区支持2个基于PRACH划分资源的特性,分别为支持SDT和终端设备的类型为RedCap,则对于SDT特性,a值可以为1,对于RedCap,a值可以为2。
应理解,网络设备确定a和k的取值,可以向终端设备发送a和k的取值。
一种可能的方式中,该RA-RNTI可以是网络设备根据第一参数、第三参数和第四参数确定的。
比如,RA-RNTI可以是根据第一参数、第三参数、第四参数、RO的第一个正交频分复用OFDM符号的标识、RO的第一个时隙的标识、RO在频域上的索引和发送导频序列的上行载波标识确定的。
上述各参数之间可以满足下述关系5:
其中,s_id为RO的第一个OFDM符号的标识,0≤s_id<14,t_id为RO的第一个时隙的标识,0≤t_id<80,f_id为RO在频域上的索引,0≤f_id<8,ul_carrier_id为发送导频序列的上行载波标识,ul_carrier_id=0或1,a为第一参数,a的取值范围为{0,1},k为第三参数,k的取值范围为{0,1},b为第四参数,b的取值范围为{0,1}。
应理解,网络设备确定a、k和b的取值,可以向终端设备发送a、k和b的取值。
网络设备根据RA-RNTI对第一消息加扰,该第一消息可以包括随机接入响应消息的调度信息或随机接入响应消息。
步骤403:网络设备发送第一消息,对应地,终端设备根据RA-RNTI接收第一消息。
示例地,网络设备可以将第一消息承载在系统信息块SIB中发送。
应理解,该第一消息可以包括至少一个终端设备对应的随机接入响应消息的调度信息或随机接入响应消息。
终端设备获取到第一参数的目标取值后,可以根据该第一参数确定RA-RNTI。终端设备确定RA-RNTI的方法与网络设备类似,可以参考步骤402中的描述,此处不再赘述。
当网络设备发送了多个消息时,终端设备可以根据RA-RNTI在多个消息中确定以相同的RA-RNTI加扰的第一消息,终端设备可以对该第一消息进行解码,获取随机接入响应消息的调度信息或随机接入响应消息。
示例地,终端设备接收多个消息,该多个消息分别以不同取值的RA-RNTI进行了加扰,其中,第一消息以第一RA-RNTI加扰,该终端设备可以根据接收的第一参数的目标取值确定RA-RNTI,当该RA-RNTI与第一RA-RNTI相同时,终端设备可以识别出第一消息,对该第一消息进行解码处理。
该方法通过对应关系确定与设备特性对应的参数值,能够确保不同的设备特性对应的RA-RNTI值不同,这样通过RA-RNTI加扰的随机接入响应消息的调度信息或随机接入响应消息得以区分,终端设备获取的RACH资源独立,避免了随机接入过程中可能因终端设备无法区分RACH资源而造成的冲突,提高了随机接入的效率,降低了随机接入的时延。
结合图4所示的方法,本申请实施例提供了一种通信的方法,如图5所示,在该方法中,用于确定RA-RNTI的各参数之间的关系可以是图4所示的方法中的关系1,第一参数可以是图4所示的方法中的a,终端设备的设备特性可以是图4所示的方法中的,终端设备为第一类型终端设备。该方法可以包括以下步骤:
步骤501:网络设备确定a的目标取值。
该步骤中的a可以参考步骤401中第一参数的描述,此处不再赘述。
网络设备可以根据终端设备的设备特性确定a的目标取值,该终端设备的设备特性为第一类型终端设备,网络设备根据设备特性“第一类型终端设备”与对应关系确定a的值可以取1。
步骤502:网络设备发送a的目标取值,对应地,终端设备获取a的目标取值。
网络设备可以通过广播方式发送a的目标取值。
步骤503:网络设备根据a的取值确定RA-RNTI,通过RA-RNTI加扰第一消息。
该步骤中网络设备可以根据步骤402中的关系1确定RA-RNTI。第一消息可以参考步骤402中第一消息的描述,不再赘述。
步骤504:网络设备发送第一消息,对应地,终端设备根据RA-RNTI接收第一消息。
步骤505:终端设备对第一消息解码,获取RACH资源。
该步骤中RA-RNTI可以是终端设备确定的,确定方法可以参考步骤403的描述,不再赘述。
该方法中网络设备和终端设备根据对应关系确定了终端设备的设备特性对应的a的取值,进一步确定RA-RNTI,确保不同的设备特性对应的RA-RNTI不同,这样,终端设备可以区分RACH资源,避免了随机接入过程中可能的冲突,提高了接入效率,降低了接入时延。
本文中描述的各个实施例可以为独立的方案,也可以根据内在逻辑进行组合,这些方案都落入本申请的保护范围中。
上述本申请提供的实施例中,分别从各个设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能,网络设备或终端设备可以包括硬件结构和/或软件模块,以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行,取决于技术方案的特定应用和设计约束条件。
本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本申请各个实施例中的各功能模块可以集成在一个处理器中,也可以是单独物理存在,也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
以下,结合图6至图7详细说明本申请实施例提供的通信装置。应理解,装置实施例的描述与方法实施例的描述相互对应,因此,未详细描述的内容可以参见上文方法实施例,为了简洁,这里不再赘述。
与上述通信方法的构思相同,如图6所示,本申请实施例还提供一种通信装置600用于实现上述方法的功能。例如,该装置可以为软件模块或者芯片系统。本申请实施例中,芯片系统可以由芯片构成,也可以包含芯片和其他分立器件。该装置600可以包括:处理单元610和收发单元620。
本申请实施例中,收发单元620用于执行上文方法实施例中收发信息的步骤。
通信装置600执行上面实施例中图4或5任一所示的流程中终端设备的功能时:
收发单元620用于接收第一参数的目标取值和第一消息。
处理单元610,用于根据第一参数确定RA-RNTI等。
通信装置600执行上面实施例中图4或5任一所示的流程中网络设备的功能时:
收发单元620用于发送第一参数的目标取值和第一消息。
处理单元610,用于根据第一参数确定RA-RNTI等。
以上只是示例,处理单元610和收发单元620还可以执行其他功能,更详细的描述可以参考图3至6所示的方法实施例或其他方法实施例中的相关描述,这里不加赘述。
如图7所示为本申请实施例提供的一种通信装置700,图7所示的装置可以为图6所示的装置的一种硬件电路的实现方式。该通信装置可适用于前面所示出的流程图中,执行上述方法实施例中网络设备或者终端设备的功能。为了便于说明,图7仅示出了该通信装置的主要部件。
如图7所示,通信装置700包括处理器710和接口电路720。处理器710和接口电路720之间相互耦合。可以理解的是,处理器710可以为逻辑电路,接口电路720可以为收发器或输入输出接口。可选的,通信装置700还可以包括存储器730,用于存储处理器710执行的指令或存储处理器710运行指令所需要的输入数据或存储处理器710运行指令后产 生的数据。
当通信装置700用于实现图4或5所示的方法时,处理器710用于实现上述处理单元610的功能,接口电路720用于实现上述收发单元620的功能。
可以理解的是,本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其它通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其它可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。通用处理器可以是微处理器,也可以是任何常规的处理器。
本申请的实施例中处理器可以是随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外,该ASIC可以位于网络设备或终端设备中。当然,处理器和存储介质也可以作为分立组件存在于网络设备或终端设备中。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序或指令,所述计算机程序或指令被计算机(例如,处理器)执行,以实现本申请实施例中由任意装置执行的任意一种方法的部分或全部步骤。
本申请实施例还提供了一种包括计算机程序或一组指令的计算机程序产品,当所述计算机程序产品在计算机上运行时,使得以上各方面的任意一种方法的部分或者全部步骤被执行。
本申请还提供一种芯片或芯片系统,该芯片可包括处理器。该芯片还可包括存储器(或存储模块)和/或收发器(或通信模块),或者,该芯片与存储器(或存储模块)和/或收发器(或通信模块)耦合,其中,收发器(或通信模块)可用于支持该芯片进行有线和/或无线通信,存储器(或存储模块)可用于存储程序或一组指令,该处理器调用该程序或该组指令可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由第一通信装置(或者终端设备)或者第二通信装置(或者网络设备)执行的操作。该芯片系统可包括以上芯片,也可以包含上述芯片和其他分立器件,如存储器(或存储模块)和/或收发器(或通信模块)。
基于与上述方法实施例相同构思,本申请还提供一种通信系统,该通信系统可包括以上终端设备和/或网络设备。该通信系统可用于实现上述方法实施例、方法实施例的任意 一种可能的实现方式中由终端设备或者网络设备执行的操作。示例性的,该通信系统可具有如图1所示结构。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (31)
- 一种通信方法,其特征在于,包括:终端设备获取第一参数的目标取值,所述第一参数的目标取值为所述第一参数的候选取值中的一个,所述第一参数的候选取值与设备特性对应,所述设备特性包括所述设备的类型,和/或,所述设备支持的特性,所述终端设备为待随机接入所述网络设备的终端设备;所述终端设备根据随机接入无线网络临时标识RA-RNTI接收第一消息,所述RA-RNTI是根据所述第一参数确定的,所述第一消息包括随机接入响应消息的调度信息或随机接入响应消息。
- 根据权利要求1所述的方法,其特征在于,所述第一参数的目标取值是根据所述终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
- 根据权利要求2所述的方法,其特征在于,所述对应关系包括:所述设备特性的数目为N,第一通信特性对应的所述第一参数的候选取值范围为1至N,其中,N为正整数,所述第一参数的候选取值为正整数,所述第一通信特性包括至少一个设备特性。
- 根据权利要求1至3中任一项所述的方法,其特征在于,所述RA-RNTI是根据所述第一参数确定的,包括:所述RA-RNTI是根据所述第一参数、所述RO的第一个正交频分复用OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和发送导频序列的上行载波标识确定的。
- 根据权利要求4所述的方法,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求4所述的方法,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求1至6中任一项所述的方法,其特征在于,所述设备支持的特性包括:支持小数据传输SDT、支持切片、支持覆盖增强CE。
- 一种通信方法,其特征在于,包括:网络设备发送第一参数的目标取值,所述第一参数的目标取值为所述第一参数的候选取值中的一个,所述第一参数的候选取值与设备特性对应,所述设备特性包括所述设备的类型,和/或,所述设备支持的特性,所述终端设备为待随机接入所述网络设备的终端设备;所述网络设备通过RA-RNTI加扰第一消息,所述第一消息包括随机接入响应消息的调度信息或随机接入响应消息,所述RA-RNTI是根据所述第一参数确定的;所述网络设备发送所述第一消息。
- 根据权利要求8所述的方法,其特征在于,所述第一参数的目标取值是根据所述终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的取值之间的关系。
- 根据权利要求9所述的方法,其特征在于,所述对应关系包括:所述设备特性的数目为N,第一通信特性对应的所述第一参数的候选取值范围为1至N,其中,N为正整数,所述第一参数的候选取值为正整数,所述第一通信特性包括至少一个设备特性。
- 根据权利要求8至10中任一项所述的方法,其特征在于,所述RA-RNTI是根据所述第一参数确定的,包括:所述RA-RNTI是根据所述第一参数、所述RO的第一个正交频分复用OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和发送导频序列的上行载波标识确定的。
- 根据权利要求11所述的方法,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求11所述的方法,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求8至13中任一项所述的方法,其特征在于,所述设备支持的特性包括:支持小数据传输SDT、支持切片、支持覆盖增强CE。
- 一种通信装置,其特征在于,所述通信装置包括收发单元和处理单元,所述处理单元用于获取第一参数的目标取值,所述第一参数的目标取值为所述第一参数的候选取值中的一个,所述第一参数的候选取值与设备特性对应,所述设备特性包括所述设备的类型,和/或,所述设备支持的特性,所述通信装置为待随机接入网络设备的通信装置;所述收发单元用于根据随机接入无线网络临时标识RA-RNTI接收第一消息,所述RA-RNTI是根据所述第一参数确定的,所述第一消息包括随机接入响应消息的调度信息或随机接入响应消息。
- 根据权利要求15所述的装置,其特征在于,所述第一参数的目标取值是根据所述通信装置的类型和/或所述通信装置支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的候选取值之间的关系。
- 根据权利要求16所述的装置,其特征在于,所述对应关系包括:所述设备特性的数目为N,第一通信特性对应的所述第一参数的候选取值范围为1至N,其中,N为正整数,所述第一参数的候选取值为正整数,所述第一通信特性包括至少一个设备特性。
- 根据权利要求15至17中任一项所述的装置,其特征在于,所述RA-RNTI是根据所述第一参数确定的,包括:所述RA-RNTI是根据所述第一参数、所述RO的第一个正交频分复用OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和发送导频序列的上行载波标识确定的。
- 根据权利要求18所述的装置,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求18所述的装置,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求15至20中任一项所述的装置,其特征在于,所述设备支持的特性 包括:支持小数据传输SDT、支持切片、支持覆盖增强CE。
- 一种通信装置,其特征在于,所述通信装置包括收发单元和处理单元,所述收发单元用于发送第一参数的目标取值,所述第一参数的目标取值为所述第一参数的候选取值中的一个,所述第一参数的候选取值与设备特性对应,所述设备特性包括所述设备的类型,和/或,所述设备支持的特性,所述设备为待随机接入所述网络设备的终端设备;所述处理单元用于通过RA-RNTI加扰第一消息,所述第一消息包括随机接入响应消息的调度信息或随机接入响应消息,所述RA-RNTI是根据所述第一参数确定的;所述收发单元还用于发送所述第一消息。
- 根据权利要求22所述的装置,其特征在于,所述第一参数的目标取值是根据所述终端设备的类型和/或所述终端设备支持的特性,以及对应关系确定的,所述对应关系包括所述设备特性和第一参数的取值之间的关系。
- 根据权利要求23所述的装置,其特征在于,所述对应关系包括:所述设备特性的数目为N,第一通信特性对应的所述第一参数的候选取值范围为1至N,其中,N为正整数,所述第一参数的候选取值为正整数,所述第一通信特性包括至少一个设备特性。
- 根据权利要求22至24中任一项所述的装置,其特征在于,所述RA-RNTI是根据所述第一参数确定的,包括:所述RA-RNTI是根据所述第一参数、所述RO的第一个正交频分复用OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和发送导频序列的上行载波标识确定的。
- 根据权利要求25所述的装置,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求25所述的装置,其特征在于,所述RA-RNTI、所述第一参数、所述RO的第一个OFDM符号的标识、所述RO的第一个时隙的标识、所述RO在频域上的索引和所述发送导频序列的上行载波标识满足下述关系:
- 根据权利要求22至27中任一项所述的装置,其特征在于,所述设备支持的特性包括:支持小数据传输SDT、支持切片、支持覆盖增强CE。
- 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用于存储计算机程序,当所述计算机程序在计算机上运行时,使得所述计算机执行如权利要求1至7中任一项所述的方法,或,使得所述计算机执行如权利要求8至14中任一项所述的方法。
- 一种芯片,其特征在于,包括处理器和通信接口,所述处理器用于读取指令以执行如权利要求1至7中任一项所述的方法,或,使得所述计算机执行如权利要求8至14中任一项所述的方法。
- 一种通信系统,其特征在于,所述通信系统包括如权利要求15至21中任一项所述的通信装置,和/或,如权利要求22至28中任一项所述的通信装置。
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