WO2020221320A1 - 一种随机接入前导发送方法及通信装置 - Google Patents

一种随机接入前导发送方法及通信装置 Download PDF

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Publication number
WO2020221320A1
WO2020221320A1 PCT/CN2020/087891 CN2020087891W WO2020221320A1 WO 2020221320 A1 WO2020221320 A1 WO 2020221320A1 CN 2020087891 W CN2020087891 W CN 2020087891W WO 2020221320 A1 WO2020221320 A1 WO 2020221320A1
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Prior art keywords
time
frequency resource
prach time
prach
frequency
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PCT/CN2020/087891
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English (en)
French (fr)
Inventor
柴晓萌
吴艺群
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2021564660A priority Critical patent/JP7305797B2/ja
Priority to EP20798921.1A priority patent/EP3952585A4/en
Priority to BR112021021815A priority patent/BR112021021815A2/pt
Publication of WO2020221320A1 publication Critical patent/WO2020221320A1/zh
Priority to US17/512,935 priority patent/US20220053577A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a random access preamble sending method and communication device.
  • Random access (RA) of terminal equipment can also be called random access channel (RACH).
  • RACH random access channel
  • terminal devices need to go from radio resource control (RRC) idle state or inactive state through a random access process. After entering the RRC connection state, various bearers can be established with the network equipment and then communicate with the network equipment.
  • RRC radio resource control
  • the existing random access is divided into four-step random access and two-step random access. Different from the four-step random access, the terminal device needs to send the random access preamble and uplink data to the network device through different steps. During random access, the terminal device simultaneously sends the random access preamble and uplink data to the network device through the same step, thereby reducing delay and signaling overhead.
  • the embodiments of the application provide a random access preamble sending method and communication device, which are used to resolve the conflict between the PRACH time-frequency resources occupied by different terminal equipment sending random access preambles and the PUSCH time-frequency resources occupied by sending uplink data, resulting in network equipment The problem that random access preamble and uplink data cannot be received normally.
  • an embodiment of the present application provides a random access preamble sending method, including: a terminal device receives configuration information sent by a network device, and the configuration information includes PRACH time-frequency resource set configuration information and PUSCH time-frequency resource set The terminal equipment determines a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set; the terminal equipment sends a random message on the determined PRACH time-frequency resource set Access preamble.
  • the terminal device determines a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set, and is used to send the random access preamble, which avoids the use of different terminal devices when sending the random access preamble.
  • the PRACH time-frequency resource and the PUSCH time-frequency resource occupied by the uplink data are conflicting, which ensures the normal reception of the random access preamble and the uplink data by the network equipment.
  • the terminal device adopts one of the following methods to determine a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set: the terminal device Determine a PRACH time-frequency resource that does not overlap in the time domain with the PUSCH time-frequency resource set in the PRACH time-frequency resource set; the terminal device determines a PRACH time-frequency resource that is in the PRACH time-frequency resource set and the PUSCH time-frequency resource set Collect PRACH time-frequency resources that do not overlap in the frequency domain.
  • the PRACH time-frequency resource determined in the PRACH time-frequency resource set for sending the random access preamble does not overlap with the PUSCH time-frequency resource set in the time domain or the frequency domain, which prevents different terminal devices from sending random access preambles
  • the occupied PRACH time-frequency resource and the PUSCH time-frequency resource occupied for sending uplink data overlap in the time domain and the frequency domain, resulting in a conflict.
  • the terminal device determining a PRACH time-frequency resource in the PRACH time-frequency resource set that does not overlap with the PUSCH time-frequency resource set in the time domain includes: the terminal device is in the In the PRACH time-frequency resource set, determine a PRACH time-frequency resource that is separated from the PUSCH time-frequency resource set in the time domain by greater than a first threshold; and/or the terminal device determines a PRACH time-frequency resource in the PRACH time-frequency resource set that is The PUSCH time-frequency resource set does not overlap the PRACH time-frequency resource in the frequency domain, including: the terminal device determines in the PRACH time-frequency resource set one that does not overlap with the PUSCH time-frequency resource set in the frequency domain and is in the time domain The upper interval is greater than the PRACH time-frequency resource of the second threshold.
  • the PRACH time-frequency resource determined in the PRACH time-frequency resource set for sending the random access preamble is separated from the PUSCH time-frequency resource set in the time domain by greater than the first threshold, or it is separated from the PUSCH time-frequency resource set in frequency.
  • the domain overlaps and the interval in the time domain is greater than the second threshold, which avoids the collision between the PRACH time-frequency resources occupied by sending the random access preamble and the PUSCH time-frequency resources occupied by sending the uplink data in the time domain being too small.
  • the terminal device determines a PRACH time-frequency resource that is separated from the PUSCH time-frequency resource set in the time domain by greater than a first threshold in the PRACH time-frequency resource set; or the terminal device Before the PRACH time-frequency resource set determines a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the frequency domain and has an interval greater than a second threshold in the time domain, the method further includes: the terminal The device determines that the subcarrier interval of the PRACH time-frequency resource set is different from the subcarrier interval of the PUSCH time-frequency resource set.
  • the subcarrier spacing of the PRACH time-frequency resource set and the PUSCH time-frequency resource set are the same or different, different conditions are used to select the random access preamble in the PRACH time-frequency resource set to send random access preambles.
  • the selection of the PRACH time-frequency resource for sending the random access preamble avoids the conflict between the PRACH time-frequency resource occupied by different terminal equipment sending the random access preamble and the PUSCH time-frequency resource occupied by sending uplink data.
  • an embodiment of the present application provides a random access preamble sending method, including: a terminal device receives configuration information sent by a network device, where the configuration information includes PRACH time-frequency resource set configuration information; the terminal device receives The indication information sent by the network device, where the indication information is used to indicate the effective PRACH time-frequency resources in the PRACH time-frequency resource set; one PRACH time-frequency resource in the effective PRACH time-frequency resources of the terminal device
  • the random access preamble is sent on.
  • the terminal device sends the random access preamble on one of the PRACH time-frequency resources that are effective in the PRACH time-frequency resource set indicated by the network device, which prevents the terminal device from sending the PRACH occupied by the random access preamble Time-frequency resources conflict with other services of network equipment.
  • the indication information includes a first bitmap or an index number or a parameter N; wherein, the first bitmap is used to indicate the validity of the PRACH time-frequency resources located in the same PRACH time slot.
  • Each PRACH time-frequency resource is valid or invalid
  • the index number is used to indicate an entry in the PRACH time-frequency resource table, and any entry in the PRACH time-frequency resource table is used to define the PRACH time-frequency resource set Among the PRACH time-frequency resources located in the same PRACH time slot, PRACH time-frequency resources that are valid in the time domain.
  • the realization of the indication information is enriched, and it is convenient to select the indication information containing the corresponding information according to the communication system and communication conditions to indicate the effective PRACH time-frequency resources in the PRACH time-
  • the indication information includes a second bitmap or parameter K; wherein, the second bitmap is used to indicate the PRACH time-frequency resource occupation in the same radio frame in the PRACH time-frequency resource set The distribution of the effective PRACH time slots in the time domain; the parameter K is used to indicate that the PRACH time-frequency resources are concentrated in the PRACH time-frequency resources in the same radio frame, and are the first in the time domain. K or the next K PRACH time slots are valid or invalid.
  • the realization of the indication information is enriched, and it is convenient to select the indication information containing the corresponding information according to the communication system and communication conditions to indicate the effective PRACH time-frequency resources in the PRACH time-frequency resource set.
  • an embodiment of the present application provides a communication device that has a possible design method for implementing any of the foregoing first aspect or the first aspect, or implementing any of the foregoing second aspect or the second aspect
  • the function of the method in the possible design can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device can be a chip or an integrated circuit.
  • the device includes a memory and a processor, and the memory is used to store a program executed by the processor.
  • the program is executed by the processor, the device can execute the first aspect or any of the first aspects.
  • the method described in one possible design, or the method described in the second aspect or any one of the possible designs of the second aspect is implemented.
  • the device may be a terminal device.
  • an embodiment of the present application provides a computer-readable storage medium that stores computer instructions, and when the computer instructions are executed by a terminal device, the terminal device executes the first aspect or the first aspect.
  • the method described in any possible design of the aspect, or the method described in the second aspect or any one of the possible designs of the second aspect is implemented.
  • the embodiments of the present application provide a computer program product containing instructions that when run on a terminal device, the terminal device can execute the first aspect or any one of the possible designs in the first aspect. Method, or execute the method described in the second aspect or any one of the possible designs of the second aspect.
  • FIG. 1 is a schematic diagram of a communication architecture in an embodiment of this application.
  • Figure 2 is one of the schematic diagrams of a random access process flow in an embodiment of this application.
  • FIG. 3 is the second schematic diagram of a random access process flow in an embodiment of this application.
  • Figure 4 is one of the schematic diagrams of a random access preamble sending process in an embodiment of this application.
  • FIG. 5 is a schematic diagram of a PRACH time-frequency resource and PUSCH time-frequency resource distribution in an embodiment of the application
  • FIG. 6 is the second schematic diagram of a PRACH time-frequency resource and PUSCH time-frequency resource distribution in an embodiment of this application;
  • FIG. 7 is the third schematic diagram of a PRACH time-frequency resource and PUSCH time-frequency resource distribution in an embodiment of this application;
  • FIG. 8 is a fourth schematic diagram of the distribution of PRACH time-frequency resources and PUSCH time-frequency resources in an embodiment of this application;
  • FIG. 9 is a fifth schematic diagram of the distribution of PRACH time-frequency resources and PUSCH time-frequency resources in an embodiment of this application.
  • FIG. 10 is a second schematic diagram of a random access preamble sending process in an embodiment of this application.
  • FIG. 11 is one of schematic diagrams of PRACH time-frequency resource distribution in an embodiment of this application.
  • FIG. 12 is a second schematic diagram of PRACH time-frequency resource distribution in an embodiment of the application.
  • FIG. 13 is a third schematic diagram of PRACH time-frequency resource distribution in an embodiment of this application.
  • FIG. 15 is a fifth schematic diagram of PRACH time-frequency resource distribution in an embodiment of this application.
  • 16 is a sixth schematic diagram of PRACH time-frequency resource distribution in an embodiment of this application.
  • FIG. 17 is a seventh schematic diagram of PRACH time-frequency resource distribution in an embodiment of this application.
  • FIG. 18 is a schematic structural diagram of a communication device in an embodiment of this application.
  • FIG. 19 is a schematic structural diagram of a terminal device in an embodiment of this application.
  • the technical solutions of the embodiments of this application can be applied to various communication systems, for example: 5G systems, NR systems, LTE systems, long term evolution-advanced (LTE-A) systems and other communication systems, and can also be extended to Such as wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), 3GPP and other related cellular systems, and future communication systems, such as 6G systems.
  • the communication system architecture applied in the embodiment of the present application may be as shown in FIG. 1, including a network device and multiple terminal devices. In FIG. 1, three terminal devices are taken as an example.
  • the terminal device 1-the terminal device 3 can send data to the network device separately or at the same time. It should be noted that the embodiment of the present application does not limit the number of terminal devices and network devices in the communication system shown in FIG. 1.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance.
  • the terms “including” and “having” in the embodiments of the present application, claims and drawings are not exclusive. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, and may also include unlisted steps or modules.
  • the "plurality" involved in this application is two or more.
  • information information
  • signal signal
  • message messages
  • channel channel
  • the meanings to be expressed are the same when the differences are not emphasized. of. " ⁇ (of)”, “corresponding (relevant)” and “corresponding” can sometimes be used together. It should be pointed out that the meanings to be expressed are the same when the difference is not emphasized.
  • Terminal devices including devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems.
  • the terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device) etc.
  • IoT Internet of things
  • it may include mobile phones (or “cellular” phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and computer-built mobile devices.
  • PCS personal communication service
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • vehicle-mounted terminal equipment for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU).
  • OBU on-board unit
  • the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.
  • Network equipment can refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network.
  • the network device may be a node in a radio access network, may also be called a base station, or may also be called a radio access network (RAN) node (or device).
  • RAN radio access network
  • the network equipment are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc.
  • the network device may include a centralized unit (CU) node and a distributed unit (DU) node. This structure splits the protocol layer of the eNB in the long-term evolution (LTE) system. Some of the protocol layer functions are placed under the centralized control of the CU, and some or all of the protocol layer functions are distributed in the DU. Centralized control of DU.
  • PRACH time-frequency resource also known as PRACH Occasion (RO)
  • PRACH Occasion is a time-frequency resource unit used to send random access preamble (random access preamble), where the random access preamble is described in the subsequent description of this application , Can also be referred to as preamble for short.
  • preamble format there are 13 types of preamble format according to the length of 839 and 139, as shown in table 6.3.3.1-1 and table 6.3.3.1-2 in 3GPP standard document 3GPP TS 38.211 V15.3.0.
  • Foram indicates the type of the preamble
  • L RA represents preamble sequence length
  • ⁇ f RA represents a PRACH resource subcarrier frequency interval
  • N u PRACH resource subcarrier frequency interval
  • CP cyclic prefix
  • the time domain resource configuration of the PRACH opportunity is determined by the PRACH configuration index (Configuration Index) configured by the network device, and the 3GPP standard document 3GPP TS 38.211 V15.3.0 in Table 6.3.3. 2-2 to 6.3.3.2-4, which is determined according to There are three tables of carrier frequency and duplex mode, each table has 256 configurations, here only part of the table is intercepted for explanation.
  • Table 6.3.3.2-2 When the corresponding frequency range is FR1, the uplink random access configuration (Random access configurations for FR1 and paired spectrum/supplementary uplink).
  • 5G NR frame structure 5G NR supports multiple sub-carrier spacing, but under different sub-carrier spacing configurations, the length of the radio frame and the sub-frame are the same.
  • the radio frame length is 10ms
  • the subframe length is 1ms.
  • each slot will be different due to the difference of the sub-carrier spacing. Generally, as the sub-carrier spacing becomes larger, the time slot length becomes smaller. Therefore, the number of time slots contained in each subframe is different. In the case of a normal cyclic prefix (Cyclic Prefix, CP), each slot contains the same number of symbols, and they are all 14.
  • Cyclic Prefix Cyclic Prefix
  • a radio frame when the subcarrier interval is configured as 15Khz (normal CP), a radio frame contains 10 subframes, and each subframe has only 1 time slot, so the radio frame contains 10 time slots, that is, the sequence number and time of the subframe
  • the sequence numbers of the slots are the same, and subframes and time slots can replace each other.
  • Each slot contains 14 OFDM symbols (the sequence numbers of the OFDM symbols in each slot are #0 to #13).
  • the subcarrier interval when configured as 30Khz (normal CP), one radio frame contains 10 subframes, and each subframe has only 2 time slots, so the radio frame contains 20 time slots.
  • Each slot contains 14 OFDM symbols (the sequence numbers of the OFDM symbols in each slot are #0 to #13 respectively), and it should be understood that the symbols involved in this application do not conflict with this application Both are indicated as OFDM symbols.
  • the PRACH time slot refers to the time slot that contains the PRACH time-frequency resources.
  • the frequency spectrum range is FR1 (Frequency Range1)
  • the PRACH time slot is divided according to the assumption that the subcarrier interval is 15kHz, that is, one subframe is one PRACH time slot:
  • the spectrum range is FR2
  • the PRACH time slot is divided according to the assumption that the sub-carrier interval is 60 kHz, that is, a time slot when the sub-carrier interval is 60 kHz is a PRACH time slot.
  • Random access random access is divided into four-step random access and two-step random access.
  • 2 shows a schematic diagram of a four-step random access process.
  • the terminal device receives the configuration information sent by the network device, and determines the PRACH time-frequency resource according to the configuration information.
  • Step 1 The terminal device sends a random access preamble to the network device on a determined PRACH time-frequency resource;
  • Step 2 After the network device receives the random access preamble, it sends a random access response (RAR) to the terminal device ), the random access response may include random access preamble, uplink data timing advance, configuration information of uplink resources for sending uplink data, and temporary cell radio network temporary identifier (C-RNTI) And other parameters;
  • Step 3 The terminal device receives the random access response, if the random access preamble indicated by the sequence number of the random access preamble in the random access response is the same as the random access that the terminal device sends to the network device in step one If the preamble is the same, the terminal device determines that the random access response is for the terminal device, and the terminal device sends uplink data to the network device according to the instructions of the random access response, such as sending uplink data on the PUSCH time-frequency resource;
  • Step 4 Network The device receives the uplink data sent by the terminal device
  • a terminal device receives configuration information sent by a network device, and determines PRACH time-frequency resources and PUSCH time-frequency resources according to the configuration information.
  • Step 1 The terminal device sends a message A (MsgA) to the network device.
  • the MsgA contains the random access preamble and uplink data.
  • the random access preamble is transmitted on a determined PRACH time-frequency resource
  • the random access preamble is transmitted on a determined PUSCH time-frequency resource.
  • the uplink data is transmitted on the resource.
  • the network device receives the MsgA sent by the terminal device, it sends MsgB to the terminal device, and MsgB can be used for Sending a random access response and/or information for conflict resolution is equivalent to steps two and four of the four-step random access.
  • the terminal device For the four-step random access terminal device in the idle state or inactive state to enter the RRC connection state, at least four signaling interactions need to be completed to communicate with the network device.
  • URLLC ultra-reliable and low latency communications
  • mMTC large-scale machine type communications
  • the terminal device needs to complete a four-step random access every time to enter the RRC connection state to send data, and then Returning to the idle state or the inactive state again not only has a higher delay, but also a serious signaling overhead.
  • the number of signaling interactions required for two-step random access is reduced, which reduces signaling overhead and delay, and is suitable for application scenarios with low delay requirements.
  • PRACH time-frequency resources and PUSCH time-frequency resources are located in the same time slot, there may be cases when different terminal devices send the PRACH time-frequency resources occupied by the random access preamble and the PUSCH occupied by the uplink data. There is a conflict in frequency resources, which causes the network equipment to be unable to receive the problem.
  • This application aims to solve the problem of how to configure the PRACH time-frequency resource for sending the random access preamble during the existing two-step random access, so as to avoid the existence of PRACH time-frequency resources and PUSCH time-frequency resources
  • the resources are located in the same time slot, and the PRACH time-frequency resources occupied by different terminal devices for sending random access preambles and the PUSCH time-frequency resources occupied by sending uplink data are conflicting.
  • Figure 4 is a schematic diagram of a random access preamble sending process provided by an embodiment of the application, and the process includes:
  • a terminal device receives configuration information sent by a network device, where the configuration information includes configuration information of a PRACH time-frequency resource set and configuration information of a PUSCH time-frequency resource set.
  • the PRACH time-frequency resource set includes at least one PRACH time-frequency resource
  • the PUSCH time-frequency resource includes at least one PUSCH time-frequency resource.
  • the PRACH time-frequency resource in the embodiment of the present application may also be referred to as a PRACH opportunity (PRACH occasion, RO), and the PUSCH time-frequency resource may also be referred to as a PUSCH opportunity (PUSCH occasion, PO).
  • the PRACH time-frequency resource set is a set of PRACH time-frequency resources.
  • the PRACH time-frequency resource set includes one or more PRACH time-frequency resources.
  • the PUSCH time-frequency resource set is a set of PUSCH time-frequency resources. In the PUSCH time-frequency resource set Includes one or more PUSCH time-frequency resources.
  • the network device may send the configuration information to the terminal device through broadcast or multicast messages, or through RRC messages.
  • the terminal device After receiving the configuration information sent by the network device, the terminal device configures the PRACH time-frequency resource set and the PUSCH time-frequency resource set according to the configuration information.
  • the configuration information of the PRACH time-frequency resource set can be composed of the distribution information of the PRACH time-frequency resource in the time domain and the distribution information of the PRACH time-frequency resource in the frequency domain.
  • the configuration information of the PUSCH time-frequency resource set can also be composed of the PUSCH time-frequency resource set.
  • the resource distribution information in the time domain and the PRACH time-frequency resource distribution information in the frequency domain are formed. Taking the distribution information of PRACH time-frequency resources in the time domain as an example, the distribution information of PRACH time-frequency resources in the time domain can be the value of PRACH Configuration Index.
  • the terminal equipment lookup table 6.3.3.2-2 , Determine the distribution of PRACH time-frequency resources in the time domain as: subframe 4 and subframe 9 of the radio frame whose frame number meets the remainder of the divisor of 16 and is 0, starting from symbol 0, there is one PRACH slot in a subframe, There are 6 consecutive PRACH time-frequency resources in each PRACH time slot, and each PRACH time-frequency resource occupies two symbols.
  • the terminal equipment can determine the PRACH time-frequency resources in the PRACH time-frequency resource set from the two dimensions of time-frequency and frequency domain; similarly, according to PUSCH
  • the distribution of time-frequency resources in the time domain and the distribution of PUSCH time-frequency resources in the frequency domain can also determine the PUSCH time-frequency resources in the PUSCH time-frequency resource set from the two dimensions of time-frequency and frequency domain.
  • the configuration information for the PUSCH time-frequency resource set can also be constituted by the time-domain information and frequency-domain information of each PUSCH time-frequency resource in the PUSCH time-frequency resource set.
  • the terminal device is based on the time-domain information and frequency domain information of each PUSCH time-frequency resource.
  • the frequency domain information can determine the PUSCH time-frequency resources in the PUSCH time-frequency resource set from the two dimensions of time-frequency and frequency domain.
  • the content of the configuration information of the PRACH time-frequency resource set and the configuration information of the PUSCH time-frequency resource set is not limited, as long as the terminal device can be instructed to determine the PRACH time-frequency resources and PUSCH in the PRACH time-frequency resource set
  • the PUSCH time-frequency resource in the time-frequency resource set is sufficient.
  • the terminal device determines a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set.
  • S403 The terminal device sends a random access preamble on the determined PRACH time-frequency resource.
  • Both PRACH time-frequency resources and PUSCH time-frequency resources are composed of two dimensions: time domain and frequency domain.
  • PRACH time-frequency resources and PUSCH time-frequency resources do not conflict in any dimension of time or frequency domain.
  • PRACH time-frequency resources and PUSCH time-frequency resources Frequency resources will not conflict.
  • the terminal device can select a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the time domain as the PRACH time-frequency resource for sending (carrying) the random access preamble;
  • the PRACH time-frequency resource that the time-frequency resource set does not overlap in the frequency domain is used as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device determines a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the time domain in the PRACH time-frequency resource set, as the PRACH time-frequency resource for sending the random access preamble.
  • PRACH time-frequency resources and the PUSCH time-frequency resource set do not overlap in the time domain, which means that neither the PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the time domain.
  • PRACH time-frequency resources and PUSCH time-frequency resources do not overlap in the time domain, including PRACH time-frequency resources and PUSCH time-frequency resources in both time and frequency domains (such as RO#0 and PO #0), PRACH time-frequency resources and PUSCH time-frequency resources do not overlap in the time domain, and overlap in the frequency domain (such as RO#1 and PO#0), where PRACH time-frequency resources and PUSCH time-frequency resources overlap in the frequency domain Including full overlap and partial overlap in the frequency domain.
  • the terminal device can select a PRACH time-frequency resource in the PRACH time-frequency resource set, and determine whether the selected PRACH time-frequency resource and the PUSCH time-frequency resource set overlap in the time domain, if not, it will select
  • the PRACH time-frequency resource is determined as the PRACH time-frequency resource for sending the random access preamble; if it is, a PRACH time-frequency resource is reselected from the unselected PRACH time-frequency resources in the PRACH time-frequency resource set, and the selected PRACH is returned to the judgment Whether the time-frequency resource and the PUSCH time-frequency resource set overlap in the time domain, until the selected PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the time domain, the selected PRACH time-frequency resource is determined as sending random access Up to the PRACH time-frequency resources of the preamble.
  • the terminal equipment selects the PRACH time-frequency resources in the PRACH time-frequency resource set at random or according to a certain strategy. For example, the minimum priority is given to the current time interval with the terminal equipment.
  • the terminal device may also first determine all PRACH time-frequency resources that do not overlap in the time domain between the PRACH time-frequency resource set and the PUSCH time-frequency resource set, and when the determined PRACH time-frequency resource set matches the PUSCH time-frequency resource set In the frequency resource set, among all PRACH time-frequency resources that do not overlap in the time domain, one PRACH time-frequency resource is selected and determined as the PRACH time-frequency resource for sending the random access preamble.
  • the 6 PRACH time-frequency resources are RO#0 to RO#5, and one PUSCH time-frequency resource is PO#0.
  • RO#4 and RO#5 which overlap with PO#0 in the time domain, cannot be determined as PRACH time-frequency resources for sending the random access preamble.
  • the terminal device can select a PRACH time-frequency resource from RO#0 to RO#5 Resources, such as RO#0, RO#0 and PO#0 do not overlap in the time domain, determine that RO#0 is the PRACH time-frequency resource for sending the random access preamble; it can also be determined first in RO#0 to RO#5 PRACH time-frequency resources that do not overlap with PO#0 in the time domain, that is, RO#0 to RO#3, select a PRACH time-frequency resource from RO#0 to RO#3, and determine the PRACH time-frequency resource for sending the random access preamble Frequency resources.
  • the terminal device determines a PRACH time-frequency resource that does not overlap in the frequency domain with the PUSCH time-frequency resource set in the PRACH time-frequency resource set, as the PRACH time-frequency resource for sending the random access preamble.
  • the PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the frequency domain, which means that neither the PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the frequency domain.
  • PRACH time-frequency resources and PUSCH time-frequency resources do not overlap in frequency domain, including PRACH time-frequency resources and PUSCH time-frequency resources do not overlap in frequency and time domains, PRACH time-frequency resources and PUSCH time-frequency resources do not overlap in frequency domain
  • the overlap of the PRACH time-frequency resources and the PUSCH time-frequency resources in the time domain includes complete overlap and partial overlap in the time domain.
  • the terminal device can select a PRACH time-frequency resource in the PRACH time-frequency resource set, and determine whether the selected PRACH time-frequency resource and the PUSCH time-frequency resource set overlap in the frequency domain, if not, it will select
  • the PRACH time-frequency resource is determined as the PRACH time-frequency resource for sending the random access preamble; if it is, a PRACH time-frequency resource is reselected from the unselected PRACH time-frequency resources in the PRACH time-frequency resource set, and the selected PRACH is returned to the judgment Steps to determine whether the time-frequency resource and the PUSCH time-frequency resource set overlap in the frequency domain until the selected PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the frequency domain, and the selected PRACH time-frequency resource is determined as sending random access Up to the PRACH time-frequency resources of the preamble.
  • the terminal device selects the PRACH time-frequency resource mode in the PRACH time-frequency resource set. For details, please refer to the relevant description in the time domain
  • the terminal device may also first determine all PRACH time-frequency resources that do not overlap in the frequency domain between the PRACH time-frequency resource set and the PUSCH time-frequency resource set, and when the determined PRACH time-frequency resource set matches the PUSCH time-frequency resource set In the frequency resource set, among all PRACH time-frequency resources that do not overlap in the frequency domain, one PRACH time-frequency resource is selected and determined as the PRACH time-frequency resource for sending the random access preamble.
  • the 6 PRACH time-frequency resources are RO#0 to RO#5, and one PUSCH time-frequency resource is PO#0.
  • RO#0 to RO#5 which do not overlap with PO#0 in the frequency domain, can be determined as the PRACH time-frequency resources for sending the random access preamble.
  • the terminal device can select a PRACH time-frequency resource from RO#0 to RO#5 Resources, such as RO#3, RO#3 and PO#0 do not overlap in the frequency domain, determine RO#3 as the PRACH time-frequency resource for sending the random access preamble; it can also be determined first in RO#0 to RO#5 PRACH time-frequency resources that do not overlap with PO#0 in the frequency domain, that is, RO#0 to RO#5, select a PRACH time-frequency resource from RO#0 to RO#5, and determine the PRACH time-frequency resource for sending the random access preamble Frequency resources.
  • RO#0 to RO#5 Resources such as RO#3, RO#3 and PO#0 do not overlap in the frequency domain
  • the terminal device can also start from the time domain dimension and the frequency domain dimension at the same time, and determine a PRACH time-frequency resource in the PRACH time-frequency resource set as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device may determine one in the PRACH time-frequency resource set, and any PUSCH time-frequency resource in the PUSCH time-frequency resource set is different from the PRACH time-frequency resource that overlaps in the time domain and the frequency domain at the same time as the random access preamble.
  • PRACH time-frequency resources may be determined. Still taking Figure 7 as an example, although RO#4 and PO#0 overlap in the time domain, RO#4 and PO#0 do not overlap in the frequency domain, and RO#4 can still be determined as the PRACH for sending the random access preamble. Frequency resources.
  • the random access preamble sending method provided by this application is adopted, the terminal equipment 1, the terminal equipment 2 , Terminal device 3 will not determine RO#4 and RO#5 that overlap with the PUSCH time-frequency resource set (PO#0) in the time and frequency domains as the PRACH time-frequency resources for sending the random access preamble.
  • the random access preamble will not be sent on RO#4 and RO#5, which avoids the problem of conflict between the PRACH time-frequency resources occupied by different terminal devices sending the random access preamble and the PUSCH time-frequency resources occupied by sending uplink data.
  • the PRACH time-frequency resources for sending the random access preamble and the PUSCH time-frequency resources occupied by the uplink data are too small in the time domain, it may also cause the PRACH time-frequency resources occupied by the random access preamble to be sent and the uplink transmission
  • the PUSCH time-frequency resource occupied by the data has the problem of conflict.
  • the terminal device may select a PRACH time-frequency resource whose time-frequency separation from the PUSCH time-frequency resource set is greater than or equal to the first threshold in the time domain; it may also choose to be different from the PUSCH time-frequency resource set in the frequency domain.
  • the PRACH time-frequency resources that overlap and have an interval greater than or equal to the second threshold in the time domain are used as the PRACH time-frequency resources for sending the random access preamble.
  • the first threshold and the second threshold can be the same or different, and can be pre-defined in the terminal device, or it can be a broadcast or multicast message sent by the terminal device according to the network device that contains the first threshold and/or the second threshold , Configured.
  • the terminal device determines, in the PRACH time-frequency resource set, a PRACH time-frequency resource that is separated from the PUSCH time-frequency resource set in the time domain by greater than a first threshold.
  • the terminal device may select a PRACH time-frequency resource in the PRACH time-frequency resource set, and determine whether the time-domain interval between the selected PRACH time-frequency resource and the PUSCH time-frequency resource set is greater than the first threshold, if If yes, determine the selected PRACH time-frequency resource as the PRACH time-frequency resource for sending the random access preamble; if not, re-select a PRACH time-frequency resource from the unselected PRACH time-frequency resources in the PRACH time-frequency resource set, Return to the step of judging whether the interval between the selected PRACH time-frequency resource and the PUSCH time-frequency resource set in the time domain is greater than the first threshold, until the interval between the selected PRACH time-frequency resource and the PUSCH time-frequency resource set in the time domain is greater than the first threshold, The selected PRACH time-frequency resource is determined as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device may also first determine all PRACH time-frequency resources whose time-domain separation between the PRACH time-frequency resource set and the PUSCH time-frequency resource set is greater than the first threshold, and set the determined PRACH time-frequency resource Among all the PRACH time-frequency resources whose intervals are greater than the first threshold in the time domain from the PUSCH time-frequency resource set, one PRACH time-frequency resource is selected and determined as the PRACH time-frequency resource for sending the random access preamble.
  • 6 PRACH time-frequency resources configured by a network device in a PRACH time slot to form a PRACH time-frequency resource set
  • 1 PUSCH time-frequency resource configured to form a PUSCH time-frequency resource as an example, as shown in FIG. 8
  • 6 PRACH time-frequency resources are RO#0 to RO#5
  • 1 PUSCH time-frequency resource is PO#0, RO#3, RO#4 and RO#5
  • PO#0 in the time domain
  • the interval is not greater than the first threshold (T1), and cannot be determined as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device can select one from RO#0 to RO#5 PRACH time-frequency resources, such as RO#0, RO#0 and PO#0 in the time domain, the interval is greater than the first threshold, it is determined that RO#0 is the PRACH time-frequency resource for sending the random access preamble; it can also be in RO#0 To RO#5, first determine the PRACH time-frequency resources that are separated from PO#0 in the time domain greater than the first threshold, that is, RO#0 to RO#2, and select a PRACH time-frequency resource from RO#0 to RO#2, Determined as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device determines a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the frequency domain and has an interval greater than the second threshold in the time domain.
  • the terminal device can select a PRACH time-frequency resource in the PRACH time-frequency resource set, and determine whether the selected PRACH time-frequency resource and the PUSCH time-frequency resource set do not overlap in the frequency domain and are in the time domain.
  • the interval is greater than the second threshold.
  • the selected PRACH time-frequency resource is determined as the PRACH time-frequency resource for sending the random access preamble; if not, the PRACH time-frequency resource that is not selected in the PRACH time-frequency resource set is re-selected Select a PRACH time-frequency resource, return to the step of judging whether the selected PRACH time-frequency resource and PUSCH time-frequency resource set do not overlap in the frequency domain and the interval in the time domain is greater than the second threshold, until the selected PRACH time-frequency resource and PUSCH When the time-frequency resource set does not overlap in the frequency domain and the interval in the time domain is greater than the second threshold, the selected PRACH time-frequency resource is determined as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device may also first determine that the PRACH time-frequency resource set does not overlap with the PUSCH time-frequency resource set in the frequency domain, and all PRACH time-frequency resources whose intervals in the time domain are greater than the second threshold, and Select a PRACH time-frequency resource among all PRACH time-frequency resources that do not overlap with the PUSCH time-frequency resource set in the frequency domain and whose interval in the time domain is greater than the second threshold, and determine it as the PRACH for sending the random access preamble Frequency resources.
  • the 6 PRACH time-frequency resources are RO#0 to RO#5, and one PUSCH time-frequency resource is PO#0.
  • RO#0 to RO#2 do not overlap with PO#0 in the frequency domain, and are separated from PO#0 in the time domain greater than the second threshold (T2), all can be determined as the PRACH for sending the random access preamble Frequency resources.
  • the terminal device may enter RO# Select a PRACH time-frequency resource from 0 to RO#5. For example, RO#3, RO#3 and PO#0 do not overlap in the frequency domain, but the interval between PO#0 and PO#0 in the time domain is not greater than the second threshold.
  • the interval between the upper and PO#0 is greater than the second threshold, and it is determined that RO#1 is the PRACH time-frequency resource for sending the random access preamble. It may also be determined in RO#0 to RO#5 that the PRACH time-frequency resources that do not overlap with PO#0 in the frequency domain and have an interval greater than the second threshold in the time domain, that is, RO#0 to RO#2, Select one PRACH time-frequency resource from RO#0 to RO#2, and determine it as the PRACH time-frequency resource for sending the random access preamble.
  • the terminal device may not consider whether the time-domain separation between the PRACH time-frequency resource and the PUSCH time-frequency resource set is greater than the threshold.
  • a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set is determined in the PRACH time-frequency resource set as the PRACH time-frequency resource for sending the random access preamble.
  • the sub-carrier spacing of the PRACH time-frequency resource set is different from the sub-carrier spacing of the PUSCH time-frequency resource set, consider whether the interval between the PRACH time-frequency resource and the PUSCH time-frequency resource set in the time domain is greater than the threshold, and adopt the method in the second implementation method.
  • a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set is determined in the PRACH time-frequency resource set as the PRACH time-frequency resource for sending the random access preamble.
  • the information about the subcarrier spacing of the PRACH time-frequency resource set and the subcarrier spacing of the PUSCH time-frequency resource set can be carried in the configuration information of the PRACH time-frequency resource set and the configuration information of the PUSCH time-frequency resource set. Obtained from the configuration information of the frequency resource set and the configuration information of the PUSCH time-frequency resource set.
  • FIG. 10 is a schematic diagram of a random access preamble sending process provided by an embodiment of this application, and the process includes:
  • the terminal device receives configuration information sent by the network device, where the configuration information includes configuration information of the PRACH time-frequency resource set.
  • the PRACH time-frequency resource set includes at least one PRACH time-frequency resource.
  • the terminal device receives indication information sent by the network device, where the indication information is used to indicate effective PRACH time-frequency resources in the PRACH time-frequency resource set.
  • sequence of S1001 and S1002 in the embodiments of this application does not limit the sequence of sending configuration information and instruction information by the network device.
  • the network device can send the configuration information and the instruction information at the same time, or the configuration information can be sent first and then sent. Instruction information, you can also send the instruction information first and then the configuration information.
  • the terminal device sends a random access preamble on one PRACH time-frequency resource among the effective PRACH time-frequency resources.
  • the network equipment In order to ensure the reception of the random access preamble, the network equipment will not affect its other services. For example, it will not affect the reception of uplink data sent (carried by) the PUSCH time-frequency resource, the network equipment also sends useful information to the terminal equipment.
  • the indication information indicating the effective PRACH time-frequency resource in the PRACH time-frequency resource set instructs the terminal device to send the random access preamble only on the PRACH time-frequency resource indicated as valid.
  • a network device can send a knowledge message to a terminal device through broadcast or multicast messages, or through RRC messages. After receiving the instruction information sent by the network device, the terminal device determines the configuration according to the configuration information.
  • the PRACH time-frequency resources are set to effective PRACH time-frequency resources.
  • the indication information may include the first bitmap or index number or parameter N; it may also include the second bitmap or parameter K, as long as it can indicate valid PRACH time-frequency resources in the PRACH time-frequency resource set.
  • N the first bitmap or index number or parameter
  • K the second bitmap or parameter K
  • the indication information includes the first bitmap or the index number or the parameter N, which is used to instruct the terminal device to determine the PRACH time-frequency resources that are located in the same PRACH time slot in the PRACH time-frequency resource set.
  • the indication information includes a first bitmap, and the first bitmap is used to indicate the time-domain distribution of effective PRACH time-frequency resources located in the same PRACH time slot in a PRACH time-frequency resource set.
  • the length of the first bitmap is not less than the maximum number of PRACH time-frequency resources in the time domain in a PRACH slot, and the first bit of the first bitmap indicates that the PRACH time-frequency resources are concentrated in the same PRACH. Whether the first PRACH time-frequency resource in the time domain in the slot is valid, and so on, the second bit of the first bitmap indicates whether the second PRACH time-frequency resource is concentrated in the same PRACH time slot in the time domain. effective.
  • 1 can indicate that the corresponding PRACH time-frequency resource is valid
  • 0 can indicate that the corresponding PRACH time-frequency resource is invalid.
  • the terminal device can only send the random access preamble on the valid PRACH time-frequency resource.
  • each PRACH time-frequency resource set is located in the same PRACH time slot, as an example, as shown in the figure As shown in 11, there are 6 PRACH time-frequency resources in the same PRACH time slot, which are RO#0 to RO#5, and the first bitmap included in the indication information of the network device configuration is 101010, then the terminal device is at that time It is determined in the slot that RO#0, RO#2, and RO#4 are valid PRACH time-frequency resources, which can be used to send random access preambles.
  • the indication information includes the parameter N, the parameter N is used to indicate the first N or the last N PRACH time-frequency resources in the time domain among the PRACH time-frequency resources located in the same PRACH time slot. Valid or invalid.
  • the parameter N is used to indicate that the PRACH time-frequency resources are concentrated in the PRACH time-frequency resources in the same PRACH time slot, the first N PRACH time-frequency resources or the last N PRACH time-frequency resources in the time domain Effective resources.
  • the terminal equipment is in this PRACH time-frequency resource. It is determined in the slot that the first 4 PRACH time-frequency resources are valid, that is, it is determined that RO#0 to RO#3 are valid PRACH time-frequency resources, which can be used to send random access preambles.
  • the indication information includes an index number, the index number is used to indicate an entry in the PRACH time-frequency resource table, and any entry in the PRACH time-frequency resource table is used to define the PRACH time-frequency resource set Among the PRACH time-frequency resources located in the same PRACH time slot, PRACH time-frequency resources that are valid in the time domain.
  • a PRACH time-frequency resource table is pre-defined in the network device and the terminal device, or the PRACH time-frequency resource table is configured by the network device and sent to the terminal device through a message such as broadcast or multicast.
  • each entry is used for a PRACH time-frequency resource centralized in the same PRACH time-frequency resource in the same PRACH time-frequency resource.
  • the PRACH time-frequency resource that is valid in the time domain each entry is associated with one PRACH time-frequency resource.
  • the unique index number corresponds. Taking a maximum of 6 PRACH time-frequency resources configured in a PRACH time slot as an example, the PRACH time-frequency resource table is as follows:
  • the terminal device determines that the first PRACH time-frequency resource located in the same PRACH time slot in the PRACH time-frequency resource is the first one in the time domain.
  • One PRACH time-frequency resource is valid, the second PRACH time-frequency resource is invalid, the third PRACH time-frequency resource is valid, the fourth PRACH time-frequency resource is invalid, the fifth PRACH time-frequency resource is valid, and the sixth PRACH time-frequency resource is valid. invalid.
  • the number of PRACH time-frequency resources actually configured in a PRACH time slot is less than the number of PRACH time-frequency resources configured in the PRACH time-frequency resource table, only the first M PRACH time-frequency resources configured in the PRACH time-frequency resource table are valid M is equal to the number of PRACH time-frequency resources actually configured in a PRACH time slot.
  • the above-mentioned first bitmap or index number or parameter N indicates that the terminal equipment is instructed to determine the effective PRACH time-frequency resources located in the same PRACH time slot in the PRACH time-frequency resource set, all instructs the terminal equipment from the time domain to determine the Effective PRACH time-frequency resources in the same PRACH time slot.
  • PRACH time-frequency resource frequency division multiplexing When PRACH time-frequency resource frequency division multiplexing is configured, that is, when two or more PRACH time-frequency resources may appear on the same time domain resource, in this embodiment of the application, it can be applied to the same time domain resource All PRACH time-frequency resources of frequency division multiplexing, that is, when PRACH time-frequency resources and frequency division multiplexing are configured, the above indication information indicates the effective PRACH time-domain resources located in the same PRACH time slot, including the All PRACH time-frequency resources on PRACH time-domain resources.
  • PRACH time slot Take a PRACH time slot as an example, as shown in Figure 14, in the PRACH time slot, there is PRACH time-frequency resource frequency division multiplexing, and there are two PRACHs located in the first PRACH time domain resource on the time domain resources.
  • Time-frequency resources (RO#0 0 , RO#0 1 ), 2 PRACH time-frequency resources (RO#1 0 , RO#1 1 ) located in the second PRACH time-domain resource... time, as in the first bitmap 101010, it indicates the PRACH time-frequency resources located in the same PRACH time slot, the first PRACH time-frequency resource is valid in the time domain (RO#0 0 , RO#0 1 ), and the second PRACH time-frequency resource in the time domain Frequency resources are invalid (RO#1 0 , RO#1 1 )...
  • the PRACH time-frequency resources are valid (RO#0 0 , RO#0 1 ), the PRACH time-frequency resources on the second PRACH time domain resource in the time domain are valid (RO#1 0 , RO#1 1 ), and the The PRACH time-frequency resource on the third PRACH time domain resource in the time domain is valid (RO#2 0 , RO#2 1 ), and the PRACH time-frequency resource on the fourth PRACH time domain resource in the time domain is invalid (RO#3 0 , RO#3 1 ), the PRACH time-frequency resource on the fifth PRACH time domain resource in the time domain is invalid (RO#4 0 , RO#4 1 ), on the sixth PRACH time domain resource in the time domain The PRACH time-frequency resource is invalid (RO#5 0 , RO#5 1 ).
  • PRACH time-frequency resource frequency division multiplexing there is PRACH time-frequency resources located in the first PRACH time-domain resource (RO#0 0 , RO#0 1 ), 2 PRACH time-frequency resources (RO#1 0 , RO#1 1 ) located in the second PRACH time-domain resource..., then PRACH time-frequency resources RO#0 0 , RO#0 1 , RO#1 0 is valid, and other PRACH time-frequency resources are invalid.
  • the application range of the indication information in the frequency domain can be predefined, for example, only applicable to the PRACH time-frequency resources with the lowest frequency band; the application range of the indication information in the frequency domain is also configured by the network equipment
  • the network device can indicate the applicable range of the indication information in the frequency domain through other signaling.
  • Other PRACH time-frequency resource terminal devices that are not instructed can be valid by default, or invalid by default. As shown in Figure 17, the instruction information is only applicable to R0#0 0 ⁇ R0#5 0 , and for the unindicated R0#0 1 ⁇ R0#5 1 , the terminal device can be effective by default.
  • the indication information includes a second bitmap or parameter K, which is used to instruct the terminal device to determine the effective PRACH time slot occupied by the PRACH time-frequency resources located in the same radio frame in the PRACH time-frequency resource set.
  • the indication information includes a second bitmap, and the second bitmap is used to indicate the time-domain distribution of effective PRACH time slots occupied by PRACH time-frequency resources located in the same radio frame in a PRACH time-frequency resource set.
  • the length of the first bitmap is not less than the maximum number of PRACH time slots in a radio frame
  • the first of the second bitmap is PRACH indicating that PRACH time-frequency resources are concentrated in the same radio frame.
  • the second bit of the second bitmap indicates whether the second PRACH slot occupied by the PRACH time-frequency resource concentrated in the same radio frame is valid. .
  • 1 indicates that the corresponding PRACH time slot is valid
  • 0 indicates that the corresponding PRACH time slot is invalid.
  • the terminal device can only determine the PRACH time-frequency resource used to send the random access preamble in the PRACH time slot indicated to be valid. For example, the terminal device can default that all PRACH time-frequency resources on the PRACH time slots indicated to be valid are valid, and can be used to send random access preambles.
  • the indication information includes a parameter K, which is used to indicate the first K or the last K in the time domain of the PRACH time-frequency resources occupied by PRACH time-frequency resources in the same radio frame.
  • the PRACH time slot is valid or invalid.
  • the parameter K is used to indicate the first K or the last K PRACH time slots in the time domain among the PRACH time-frequency resources occupied by PRACH time-frequency resources in the same radio frame. effective.
  • the terminal device can only determine the PRACH time-frequency resource used to send the random access preamble on the PRACH time slot indicated to be valid.
  • the parameter K is used to indicate that the PRACH time-frequency resources are concentrated in the same radio frame in the PRACH time-frequency resources occupied by the PRACH time-frequency resources, in the time domain of the first K or the last K PRACH time The gap is invalid.
  • the terminal device concentrates the PRACH time-frequency resources in the PRACH time-frequency resources occupied by the PRACH time-frequency resources in the same radio frame, which are not indicated as invalid PRACH time slots in the time domain, and are valid PRACH time slots by default.
  • the PRACH time-frequency resource used to send the random access preamble is determined on the effective PRACH time slot.
  • the terminal equipment can determine that the PRACH time-frequency resources are concentrated in the same radio frame and the PRACH time-frequency resources occupy the effective PRACH time slots.
  • the terminal equipment can directly concentrate the PRACH time-frequency resources and locate the PRACH in the effective PRACH time slots.
  • the resources are all determined as effective PRACH time-frequency resources.
  • the configuration information sent by the network device includes a second bitmap or parameter K, which is used to instruct the terminal device to determine the effective PRACH in the PRACH time slot occupied by the PRACH time-frequency resources in the same radio frame.
  • Time slot (mode 2) and the configuration information also includes the first bitmap or index number or parameter N, which is used to instruct the terminal equipment to determine the effective PRACH time-frequency in the PRACH time-frequency resource set that is indicated as valid Resource, the terminal device can only send the random access preamble on the effective PRACH time-frequency resource in the effective PRACH time slot.
  • the configuration information sent by the network device includes a second bitmap or parameter K, which is used to instruct the terminal device to determine the effective PRACH in the PRACH time slot occupied by the PRACH time-frequency resources in the same radio frame.
  • Time slot (mode 2) the terminal device can default that all PRACH time-frequency resources in the valid PRACH time slot are valid, and the configuration information also includes the first bitmap or index number or parameter N to indicate the terminal device.
  • the valid PRACH time-frequency resources in the PRACH time slots that are not indicated as valid in the PRACH time-frequency resource set are determined, so that the terminal device sends the random access preamble on the valid PRACH time-frequency resources.
  • an embodiment of the present application further provides a communication device 1800, which may include a transceiver unit 1801 and a processing unit 1802.
  • the communication device is configured to perform the steps performed by the terminal device in the first random access preamble sending method corresponding to FIG. 4.
  • the transceiver unit 1801 is configured to receive configuration information sent by a network device, where the configuration information includes configuration information of a physical random access channel PRACH time-frequency resource set and configuration information of a physical uplink shared channel PUSCH time-frequency resource set;
  • the processing unit 1802 is configured to determine a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set;
  • the transceiving unit 1801 is further configured to send a random access preamble on the PRACH time-frequency resource determined by the processing unit 1802.
  • the processing unit 1802 adopts one of the following ways to determine a PRACH time-frequency resource that does not conflict with the PUSCH time-frequency resource set in the PRACH time-frequency resource set:
  • the processing unit 1802 determines a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the time domain in the PRACH time-frequency resource set, it is specifically used to Determining, in the time-frequency resource set, a PRACH time-frequency resource that is separated from the PUSCH time-frequency resource set in the time domain by greater than a first threshold; and/or
  • the processing unit 1802 determines a PRACH time-frequency resource that does not overlap with the PUSCH time-frequency resource set in the frequency domain in the PRACH time-frequency resource set, it is specifically configured to determine a PRACH time-frequency resource set that does not overlap with the PUSCH time-frequency resource set.
  • the PUSCH time-frequency resource set does not overlap in the frequency domain and has PRACH time-frequency resources with an interval greater than the second threshold in the time domain.
  • the processing unit 1802 is further configured to determine the subcarrier interval of the PRACH time-frequency resource set and the PUSCH time-frequency resource before the PRACH time-frequency resource is determined in the PRACH time-frequency resource set
  • the subcarrier spacing of the set is not the same.
  • the communication device is configured to perform the steps performed by the terminal device in the first method for implementing random access preamble transmission corresponding to FIG. 10.
  • the transceiver unit 1801 is configured to receive configuration information sent by a network device and receive instruction information sent by the network device, where the configuration information includes configuration information of a physical random access channel PRACH time-frequency resource set; the instruction The information is used to indicate the effective PRACH time-frequency resources in the PRACH time-frequency resource set;
  • the processing unit 1802 is configured to determine a PRACH time-frequency resource among the effective PRACH time-frequency resources in the PRACH time-frequency resource set;
  • the transceiving unit 1801 is further configured to send a random access preamble on the PRACH time-frequency resource determined by the processing unit 1802.
  • the indication information includes the first bitmap or index number or parameter N;
  • the first bitmap is used to indicate the distribution in the time domain of the effective PRACH time-frequency resources located in the same PRACH time slot in the PRACH time-frequency resource set;
  • the parameter N is used to indicate that the first N or the next N PRACH time-frequency resources in the time domain are valid or invalid among the PRACH time-frequency resources located in the same PRACH time slot.
  • the index number is used to indicate an entry in the PRACH time-frequency resource table, and any one entry in the PRACH time-frequency resource table is used to define the PRACH time-frequency resource set in the same PRACH time slot.
  • PRACH time-frequency resources that are valid in the time domain.
  • the indication information includes a second bitmap or parameter K; wherein,
  • the second bitmap is used to indicate the distribution in the time domain of the effective PRACH time slots occupied by the PRACH time-frequency resources located in the same radio frame in the PRACH time-frequency resources;
  • the parameter K is used to indicate that the first K or the last K PRACH time slots in the time domain are valid or invalid among the PRACH time-frequency resources occupied by the PRACH time-frequency resources in the same radio frame.
  • an embodiment of the present application also provides a terminal device, as shown in FIG. 19, the terminal device can be applied to the system shown in FIG. 1 to execute the foregoing method embodiment The function of the terminal equipment.
  • FIG. 19 only shows the main components of the terminal device.
  • the terminal device 190 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program, for example, to support the terminal device to perform the actions described in the above method embodiments, such as , According to the reference signal instruction information, send uplink data, etc.
  • the memory is mainly used to store software programs and data, for example, to store the corresponding relationship between the instruction information and the combination information described in the above embodiments.
  • the control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 19 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device. , Execute the software program, and process the data of the software program.
  • the processor in FIG. 19 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and the control circuit with the transceiving function can be regarded as the transceiving unit 1901 of the terminal device 190, for example, for supporting the terminal device to perform the receiving function and the transmitting function.
  • the processor with processing functions is regarded as the processing unit 1902 of the terminal device 190.
  • the terminal device 190 includes a transceiving unit 1901 and a processing unit 1902.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the device for implementing the receiving function in the transceiver unit 1901 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1901 can be regarded as the sending unit, that is, the transceiver unit 1901 includes a receiving unit and a sending unit,
  • the receiving unit may also be called a receiver, an input port, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processor 1902 may be used to execute instructions stored in the memory to control the transceiver unit 1901 to receive signals and/or send signals, so as to complete the functions of the terminal device in the foregoing method embodiment.
  • the function of the transceiver unit 1901 may be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • an embodiment of the present application also provides a computer-readable medium, the storage medium stores computer instructions, and when the computer instructions are executed by a terminal device, the The terminal device implements the random access preamble sending method described in any of the foregoing method embodiments.
  • an embodiment of the present application also provides a computer program product that, when the computer instruction is executed by a terminal device, enables the terminal device to implement the method described in any of the foregoing method embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) etc.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • Computer-readable media include computer storage media and communication media, where communication media includes any media that facilitates the transfer of computer programs from one place to another.
  • the storage medium may be any available medium that can be accessed by a computer.
  • computer readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures
  • Any connection can suitably become a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , Fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless and microwave are included in the fixing of the media.
  • Disk and disc include compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy discs and Blu-ray discs. Disks usually copy data magnetically, while discs The laser is used to optically copy data. The above combination should also be included in the protection scope of the computer-readable medium.

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Abstract

本申请涉及通信技术领域，公开了一种随机接入前导发送方法及通信装置，用以避免终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突，导致网络设备无法正常接收随机接入前导和上行数据的问题。该方法为：终端设备接收网络设备发送的配置信息，所述配置信息包括PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息；所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源；所述终端设备在确定的所述PRACH时频资源上发送随机接入前导。

Description

一种随机接入前导发送方法及通信装置
相关申请的交叉引用
本申请要求在2019年04月30日提交中国专利局、申请号为201910363256.1、申请名称为“一种随机接入前导发送方法及通信装置”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。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种随机接入前导发送方法及通信装置。
背景技术
终端设备的随机接入(random access，RA)，也可称随机接入信道(random access channel，RACH)。在长期演进(long term evolution，LTE)、新无线(new radio，NR)等系统中终端设备需要通过随机接入过程从无线资源控制(radio resource control，RRC)空闲态或非激活(inactive)态进入RRC连接态，才能与网络设备建立起各种承载，进而与网络设备进行通信。现有随机接入分为四步随机接入和两步随机接入，不同于四步随机接入时，终端设备需要通过不同的步骤向网络设备发送随机接入前导和上行数据，在两步随机接入时，终端设备通过同一步骤同时向网络设备发送随机接入前导和上行数据，从而降低时延、减小信令开销。
然而，在两步随机接入时，如果用于承载随机接入前导的物理随机接入信道(physical random access channel，PRACH)时频资源和用于承载上行数据的物理上行共享信道(physical uplink shared channel，PUSCH)时频资源配置在同一时隙时，并在频域存在重叠，则可能出现不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突，导致网络设备无法正常接收随机接入前导和上行数据的问题。
发明内容
本申请实施例提供一种随机接入前导发送方法及通信装置，用以解决不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突，导致网络设备无法正常接收随机接入前导和上行数据的问题。
第一方面，本申请实施例提供了一种随机接入前导发送方法，包括：终端设备接收网络设备发送的配置信息，所述配置信息包括PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息；所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源；所述终端设备在确定的所述PRACH时频资源上发送随机接入前导。本申请实施例中，终端设备在PRACH时频资源集中确定一个与PUSCH时频资源集不冲突的PRACH时频资源，用于发送随机接入前导，避免了不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突的问题，保证了网络设备对随机接入前导和上行数据的正常接收。
在一种可能的设计中，所述终端设备采用以下方式中的一种，在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源：所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源；所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源。上述设计中，在PRACH时频资源集中确定的用于发送随机接入前导的PRACH时频资源，与PUSCH时频资源集在时域或频域不重叠，避免了不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源在时域和频域重叠导致的冲突。
在一种可能的设计中，所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源，包括：所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源；和/或所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源，包括：所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源。上述设计中，在PRACH时频资源集中确定的用于发送随机接入前导的PRACH时频资源，与PUSCH时频资源集在时域上间隔大于第一阈值，或者与PUSCH时频资源集在频域重叠、且在时域上间隔大于第二阈值，避免了因发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源在时域上间隔过小产生冲突。
在一种可能的设计中，所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源；或所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源之前，所述方法还包括：所述终端设备确定所述PRACH时频资源集的子载波间隔和所述PUSCH时频资源集的子载波间隔不相同。上述设计中，在PRACH时频资源集和PUSCH时频资源集的子载波间隔相同和不同时，采用不同条件在PRACH时频资源集中选择用于发送随机接入前导，满足了不同条件下，对发送随机接入前导的PRACH时频资源的选择，避免了不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源冲突。
第二方面，本申请实施例提供了一种随机接入前导发送方法，包括：终端设备接收网络设备发送的配置信息，所述配置信息包括PRACH时频资源集的配置信息；所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指示所述PRACH时频资源集中有效的PRACH时频资源；所述终端设备在所述有效的PRACH时频资源中的一个PRACH时频资源上发送随机接入前导。在本申请中，终端设备在网络设备指示的PRACH时频资源集中有效的PRACH时频资源中的一个PRACH时频资源上，发送随机接入前导，避免了终端设备发送随机接入前导占用的PRACH时频资源与网络设备的其它业务产生冲突。
在一种可能的设计中，所述指示信息包括第一位图或索引号或者参数N；其中，所述第一位图用于指示所述PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源在时域上的分布；所述参数N用于指示所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个或后N个PRACH时频资源有效或无效；所述索引号用于指示PRACH时频资源表中的一个表项，所述PRACH时频资源表中的任意一个表项用于定义所述PRACH时频资源集中位于同一PRACH时隙内的 PRACH时频资源中，在时域上有效的PRACH时频资源。上述设计中，丰富了指示信息的实现，便于根据通信系统和通信条件，选择包含相应信息的指示信息，指示PRACH时频资源集中有效的PRACH时频资源。
在一种可能的设计中，所述指示信息包括第二位图或参数K；其中，所述第二位图用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙在时域上的分布；所述参数K用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效或无效。上述设计中，丰富了指示信息的实现，便于根据通信系统和通信条件，选择包含相应信息的指示信息，指示PRACH时频资源集中有效的PRACH时频资源。
第三方面，本申请实施例提供一种通信装置，该装置具有实现上述第一方面或者第一方面的任一种可能的设计中方法，或者执行上述第二方面或者第二方面的任一种可能的设计中方法的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，该装置可以是芯片或者集成电路。
在一个可能的设计中，该装置包括存储器和处理器，存储器用于存储所述处理器执行的程序，当程序被处理器执行时，所述装置可以执行上述第一方面或者第一方面的任一种可能的设计中所述的方法，或者执行第二方面或者第二方面的任一种可能的设计中所述的方法。
在一个可能的设计中，该装置可以为终端设备。
第四方面，本申请实施例提供一种计算机可读存储介质，所述存储介质存储有计算机指令，当所述计算机指令被终端设备执行时，使得所述终端设备执行上述第一方面或者第一方面的任一种可能的设计中所述的方法，或者执行上述第二方面或者第二方面的任一种可能的设计中所述的方法。
第五方面，本申请实施例供了一种包含指令的计算机程序产品，当其在终端设备上运行时，使得终端设备可以执行上述第一方面或者第一方面的任意一种可能的设计中的方法，或者执行上述第二方面或者第二方面的任一种可能的设计中所述的方法。
附图说明
图1为本申请实施例中一种通信架构示意图；
图2为本申请实施例中一种随机接入过程流程示意图之一；
图3为本申请实施例中一种随机接入过程流程示意图之二；
图4为本申请实施例中一种随机接入前导发送过程示意图之一；
图5为本申请实施例中一种PRACH时频资源和PUSCH时频资源分布示意图之一；
图6为本申请实施例中一种PRACH时频资源和PUSCH时频资源分布示意图之二；
图7为本申请实施例中一种PRACH时频资源和PUSCH时频资源分布示意图之三；
图8为本申请实施例中一种PRACH时频资源和PUSCH时频资源分布示意图之四；
图9为本申请实施例中一种PRACH时频资源和PUSCH时频资源分布示意图之五；
图10为本申请实施例中一种随机接入前导发送过程示意图之二；
图11为本申请实施例中一种PRACH时频资源分布示意图之一；
图12为本申请实施例中一种PRACH时频资源分布示意图之二；
图13为本申请实施例中一种PRACH时频资源分布示意图之三；
图14为本申请实施例中一种PRACH时频资源分布示意图之四；
图15为本申请实施例中一种PRACH时频资源分布示意图之五；
图16为本申请实施例中一种PRACH时频资源分布示意图之六；
图17为本申请实施例中一种PRACH时频资源分布示意图之七；
图18为本申请实施例中一种通信装置结构示意图；
图19为本申请实施例中一种终端设备结构示意图。
具体实施方式
下面将结合附图，对本申请实施例进行详细描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：5G系统，NR系统，LTE系统，长期演进高级(long term evolution-advanced，LTE-A)系统等通信系统中，也可以扩展到如无线保真(wireless fidelity，WiFi)、全球微波互联接入(worldwide interoperability for microwave access，wimax)、以及3GPP等相关的蜂窝系统中，及未来的通信系统，如6G系统等。具体的，本申请实施例所应用的通信系统架构可以如图1所示，包括网络设备和多个终端设备，图1中以三个终端设备为例。终端设备1-终端设备3可以分别或者同时向网络设备发送数据，需要说明的是，本申请实施例中不限定图1中所示通信系统中终端设备以及网络设备的个数。
另外，需要理解，在本申请实施例中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本申请实施例和权利要求书及附图中的术语“包括”和“具有”不是排他的。例如，包括了一系列步骤或模块的过程、方法、系统、产品或设备没有限定于已列出的步骤或模块，还可以包括没有列出的步骤或模块。本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。应理解，在本申请实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。此外，本申请实施例和权利要求书及附图中的术语“包括”和“具有”不是排他的。例如，包括了一系列步骤或模块的过程、方法、系统、产品或设备没有限定于已列出的步骤或模块，还可以包括没有列出的步骤或模。本申请中涉及的“多个”为两个或两个以上。
此外，本申请实施例中，信息(information)，信号(signal)，消息(message)，信道(channel)有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
在介绍本申请实施例之前，首先对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)、终端设备，包括向用户提供语音和/或数据连通性的设备，例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、V2X终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。
本申请实施例中，终端设备还可以包括中继(relay)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
2)网络设备，可以是指接入网中在空口通过一个或多个小区与无线终端设备通信的设备。所述网络设备可以为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。目前，一些网络设备的举例为：gNB、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wifi)接入点(access point，AP)等。另外，在一种网络结构中，所述网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点。这种结构将长期演进(long term evolution，LTE)系统中eNB的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU 集中控制DU。
3)PRACH时频资源，也称为PRACH机会(PRACH Occasion，RO)，为一块用于发送随机接入前导(random access preamble)的时频资源单元，其中随机接入前导在本申请后续描述中，也可被简称为preamble。目前preamble格式根据长度有839和139两类，共13种，如3GPP标准文稿3GPP TS 38.211 V15.3.0中表(table)6.3.3.1-1和table 6.3.3.1-2所示。其中，Foram表示preamble的类型，L RA表示preamble序列长度，Δf RA表示PRACH时频资源子载波间隔，N u和
Figure PCTCN2020087891-appb-000001
分别为preamble和循环前缀(cyclic prefix，CP)的时域长度，其中preamble由长度为Tcp的CP和长度为Tseq的序列(Sequence)组成。
表6.3.3.1-1：preamble序列长度类型为839、PRACH时频资源子载波间隔为2.25kHz或5kHz时preamble的类型(PRACH preamble formats for L RA＝839andΔf RA∈{1.25,5}kHz)。
Figure PCTCN2020087891-appb-000002
表6.3.3.1-1
表6.3.3.1-2：preamble序列长度类型为139、PRACH时频资源子载波间隔为15·2 μkHz、μ∈{0,1,2,3}时，preamble的类型。
Figure PCTCN2020087891-appb-000003
表6.3.3.1-2
PRACH机会的时域资源配置由网络设备配置的参数PRACH配置索引(Configuration Index)确定，以及3GPP标准文稿3GPP TS 38.211 V15.3.0中的表6.3.3.2-2 to 6.3.3.2-4确定，其中根据载波频率、双工模式共有三张表，每张表256种配置，这里仅截取部分表格作为解释。
表6.3.3.2-2：对应频率范围为FR1时，上行链路的随机接入配置(Random access configurations for FR1 and paired spectrum/supplementary uplink)。
Figure PCTCN2020087891-appb-000004
表6.3.3.2-2
参照表6.3.3.2-2所示，如果网络设备配置的PRACH Configuration Index＝87时，对应在所有帧号满足与除数16的余数为0(mod16＝0)的无线帧的子帧4和子帧9，从符号0开始，一个子帧内只有一个PRACH时隙，每个PRACH时隙中有6个连续的PRACH机会，每个PRACH机会占用2个符号。
4)5G NR帧结构，5G NR支持多种子载波间隔，但是不同子载波间隔配置下，无线帧和子帧的长度是相同的。无线帧长度为10ms，子帧长度为1ms。
每个子帧中的时隙长度会因为子载波间隔不同而有所不同，一般是随着子载波间隔变大，时隙长度变小。因此，每个子帧中包含的时隙数不同。在正常循环前缀(Cyclic Prefix,CP)情况下，每个时隙包含的符号数相同，且都为14个。
例如：当子载波间隔配置为15Khz(正常CP)时，1个无线帧包含10个子帧，每个子帧仅有1个时隙，所以无线帧包含10个时隙，即子帧的序号与时隙的序号相同，子帧和时隙可以互相代替。每个时隙包含的14个OFDM符号(每个时隙中的OFDM符号的序号分别为#0到#13)。
需要说明的是，本申请中所有序号还可以理解为编号或者索引。
又例如：当子载波间隔配置为30Khz(正常CP)时，1个无线帧包含10个子帧，每个子帧仅有2个时隙，所以无线帧包含20个时隙。每个时隙包含的14个OFDM符号(每个时隙中的OFDM符号的序号分别为#0到#13)，另外需要理解的是本申请中涉及的符号在与本申请不冲突的情况下均指示为OFDM符号。
PRACH时隙指的是包含PRACH时频资源的时隙，当频谱范围为FR1(Frequency range1)时，PRACH时隙是按照子载波间隔为15kHz的假设划分的，也就是说，一个子帧就是一个PRACH时隙；当频谱范围为FR2时，PRACH时隙是按照子载波间隔为60kHz的假设划分的，也就是说，在子载波间隔为60kHZ时的一个时隙就是一个PRACH时隙。
5)随机接入(RA)，随机接入分为四步随机接入和两步随机接入。参照图2所示，为四步随机接入过程示意图，终端设备接收网络设备发送的配置信息，根据该配置信息确定PRACH时频资源。步骤一：终端设备在确定的一个PRACH时频资源上向网络设备发送随机接入前导；步骤二：网络设备接收到随机接入前导后，向终端设备发送随机接入响应(random access response，RAR)，随机接入响应中可以包括随机接入前导、上行数据定时提前量、用于发送上行数据的上行资源的配置信息以及临时的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)等参数；步骤三：终端设备接收随机接入响应，如果该随机接入响应中的随机接入前导的序列编号所指示的随机接入前导与步骤一中终端设备向网络设备发送的随机接入前导相同，则终端设备确定该随机接入响应是针对该终端设备的，终端设备根据随机接入响应的指示向网络设备发送上行数据，如在PUSCH时频资源上发送上行数据；步骤四：网络设备接收到终端设备发送的上行数据，向终端设备 发送冲突解决消息(也可称之为竞争解决消息)，网络设备在冲突解决消息中将携带唯一标识指定接入成功的终端设备，而其它没有接入成功的终端设备将重新发起随机接入。
参照图3所示，为两步随机接入过程示意图，终端设备接收网络设备发送的配置信息，根据该配置信息确定PRACH时频资源和PUSCH时频资源。步骤一：终端设备向网络设备发送消息A(MsgA)，MsgA中包含随机接入前导和上行数据，其中，在确定的一个PRACH时频资源上传输随机接入前导，在确定的一个PUSCH时频资源上传输上行数据，在一种实施例中，等效于四步随机接入过程中的步骤一和步骤三；网络设备接收到终端设备发送的MsgA后，向终端设备发送MsgB，MsgB可用于发送随机接入响应和/或用于冲突解决的信息，等效于四步随机接入的步骤二和步骤四。
对于四步随机接入处于空闲态或inactive态的终端设备进入RRC连接态，与网络设备进行通信至少需要完成四次信令交互。对于高可靠低时延通信(ultra-reliable and low latency communications，URLLC)业务，四次信令交互会产生较高的时延，不利于URLLC低时延的要求。对于大规模机器通信(massive machine type communications，mMTC)业务，由于大部分业务都是零星的小包，终端设备每一次都需要完整的进行一次四步随机接入进入RRC连接态才能发送一次数据，然后再次返回空闲态或inactive态，不仅时延较高，信令开销也比较严重。而两步随机接入需要的信令交互次数减少，降低了信令开销，也降低了时延，适用于有低时延要求的应用场景。
然而对于两步随机接入，如果存在PRACH时频资源和PUSCH时频资源位于同一时隙内，则可能出现不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突，导致网络设备无法接收的问题，本申请旨在解决现有两步随机接入时，如何配置发送随机接入前导的PRACH时频资源，避免存在PRACH时频资源和PUSCH时频资源位于同一时隙内，不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突的问题。
下面结合附图详细说明本申请实施例。
【实施例一】
图4为本申请实施例提供的一种随机接入前导发送过程示意图，该过程包括：
S401：终端设备接收网络设备发送的配置信息，所述配置信息包括PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息。
所述PRACH时频资源集中包含至少一个PRACH时频资源，所述PUSCH时频资源包含至少一个PUSCH时频资源。
本申请实施例中PRACH时频资源，也可以称为PRACH机会(PRACH occasion，RO)，PUSCH时频资源，也可以称为PUSCH机会(PUSCH occasion，PO)。PRACH时频资源集为PRACH时频资源构成的集合，在PRACH时频资源集中包括一个或多个PRACH时频资源，PUSCH时频资源集为PUSCH时频资源构成的集合，在PUSCH时频资源集中包括一个或多个PUSCH时频资源。
示例的，网络设备可以通过广播或者组播消息的方式、或者通过RRC消息等方式，将配置信息发送给终端设备。终端设备接收到网络设备发送的配置信息后，根据所述配置信息配置PRACH时频资源集和PUSCH时频资源集。
具体的，PRACH时频资源集的配置信息可以由PRACH时频资源在时域的分布信息和PRACH时频资源在频域的分布信息构成，PUSCH时频资源集的配置信息也可以由 PUSCH时频资源在时域的分布信息和PRACH时频资源在频域的分布信息构成。以PRACH时频资源在时域的分布信息为例，PRACH时频资源在时域的分布信息可以为PRACH Configuration Index的值，如果PRACH Configuration Index的值为87，终端设备查找表6.3.3.2-2，确定PRACH时频资源在时域上的分布为，帧号满足与除数16的余数为0的无线帧的子帧4和子帧9，从符号0开始，一个子帧内有一个PRACH时隙，每个PRACH时隙中有6个连续的PRACH时频资源，每个PRACH时频资源占用两个符号。终端设备根据PRACH时频资源在时域的分布和PRACH时频资源频域的分布，即可从时频和频域两个维度确定PRACH时频资源集中的PRACH时频资源；同理，根据PUSCH时频资源在时域的分布和PUSCH时频资源频域的分布，也可从时频和频域两个维度确定PUSCH时频资源集中的PUSCH时频资源。
当然了，对于PUSCH时频资源集的配置信息也可以由PUSCH时频资源集中每个PUSCH时频资源的时域信息和频域信息构成，终端设备根据每个PUSCH时频资源的时域信息和频域信息，即可从时频和频域两个维度确定PUSCH时频资源集中的PUSCH时频资源。
在本申请实施例中，对于PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息的内容不进行限定，只要能指示终端设备确定出PRACH时频资源集中的PRACH时频资源和PUSCH时频资源集中的PUSCH时频资源即可。
S402：所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源。
S403：所述终端设备在确定的所述PRACH时频资源上发送随机接入前导。
PRACH时频资源和PUSCH时频资源均是由时域和频域两个维度构成，PRACH时频资源和PUSCH时频资源在时域或频域任意一个维度不冲突，PRACH时频资源和PUSCH时频资源即不会发生冲突。
(实现方式一)
因此，在一种实现方式中，终端设备可以选取与PUSCH时频资源集在时域不重叠的PRACH时频资源，作为发送(承载)随机接入前导的PRACH时频资源；也可以选取与PUSCH时频资源集在频域不重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。下面结合时域和频域两个维度进行说明。
时域维度：
终端设备在PRACH时频资源集中确定一个与PUSCH时频资源集在时域不重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。
需要说明的是，PRACH时频资源与PUSCH时频资源集在时域不重叠，为PRACH时频资源与PUSCH时频资源集中任一PUSCH时频资源在时域均不重叠。示例的，如图5所示，PRACH时频资源与PUSCH时频资源在时域不重叠，包括PRACH时频资源与PUSCH时频资源在时域和频域均不重叠(如RO#0与PO#0)，PRACH时频资源与PUSCH时频资源在时域不重叠、在频域重叠(如RO#1和PO#0)两种，其中PRACH时频资源与PUSCH时频资源在频域重叠包括在频域完全重叠和部分重叠。
在一种可能的实施中，终端设备可以在PRACH时频资源集中选择一个PRACH时频资源，并判断选择的PRACH时频资源与PUSCH时频资源集在时域是否重叠，如果否，则将选择的PRACH时频资源确定为发送随机接入前导的PRACH时频资源；如果是，则 在PRACH时频资源集中未被选择的PRACH时频资源中重新选择一个PRACH时频资源，返回判断选择的PRACH时频资源与PUSCH时频资源集在时域是否重叠的步骤，直至选择的PRACH时频资源与PUSCH时频资源集在时域不重叠，将选择的PRACH时频资源，确定为发送随机接入前导的PRACH时频资源为止。
其中，终端设备在PRACH时频资源集中选择PRACH时频资源可以随机选择，也可以按照一定的策略选择，如按照与终端设备当前时间间隔时长最小优先，在PRACH时频资源集中选择与终端设备当前时间间隔时长最小的PRACH时频资源。
在另一种可能的实施中，终端设备也可以先确定PRACH时频资源集中与PUSCH时频资源集在时域不重叠的所有PRACH时频资源，并在确定的PRACH时频资源集中与PUSCH时频资源集在时域不重叠的所有PRACH时频资源中，选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
示例性的，以一个PRACH时隙内网络设备配置的6个PRACH时频资源构成PRACH时频资源集、配置的1个PUSCH时频资源构成PUSCH时频资源为例进行说明，如图6所示，其中，6个PRACH时频资源分别为RO#0至RO#5，1个PUSCH时频资源为PO#0。RO#4和RO#5，与PO#0在时域重叠，不能被确定为发送随机接入前导的PRACH时频资源。在确定一个与PUSCH时频资源集在时域不重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源时，终端设备可以在RO#0至RO#5中选择一个PRACH时频资源，如RO#0，RO#0与PO#0在时域不重叠，确定RO#0为发送随机接入前导的PRACH时频资源；也可以是在RO#0至RO#5中先确定与PO#0在时域不重叠的PRACH时频资源，即RO#0至RO#3，在RO#0至RO#3中选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
频域维度：
终端设备在PRACH时频资源集中确定一个与PUSCH时频资源集在频域不重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。
需要说明的是，PRACH时频资源与PUSCH时频资源集在频域不重叠，为PRACH时频资源与PUSCH时频资源集中任一PUSCH时频资源在频域均不重叠。其中，PRACH时频资源与PUSCH时频资源在频域不重叠，包括PRACH时频资源与PUSCH时频资源在频域和时域均不重叠，PRACH时频资源与PUSCH时频资源在频域不重叠、在时域重叠两种，其中PRACH时频资源与PUSCH时频资源在时域重叠包括在时域完全重叠和部分重叠。
在一种可能的实施中，终端设备可以在PRACH时频资源集中选择一个PRACH时频资源，并判断选择的PRACH时频资源与PUSCH时频资源集在频域是否重叠，如果否，则将选择的PRACH时频资源确定为发送随机接入前导的PRACH时频资源；如果是，则在PRACH时频资源集中未被选择的PRACH时频资源中重新选择一个PRACH时频资源，返回判断选择的PRACH时频资源与PUSCH时频资源集在频域是否重叠的步骤，直至选择的PRACH时频资源与PUSCH时频资源集在频域不重叠，将选择的PRACH时频资源，确定为发送随机接入前导的PRACH时频资源为止。终端设备在PRACH时频资源集中选择PRACH时频资源方式，可以参见时域维度中相关描述，不再赘述。
在另一种可能的实施中，终端设备也可以先确定PRACH时频资源集中与PUSCH时频资源集在频域不重叠的所有PRACH时频资源，并在确定的PRACH时频资源集中与PUSCH时频资源集在频域不重叠的所有PRACH时频资源中，选择一个PRACH时频资源， 确定为发送随机接入前导的PRACH时频资源。
示例性的，以一个PRACH时隙内网络设备配置的6个PRACH时频资源构成PRACH时频资源集、配置的1个PUSCH时频资源构成PUSCH时频资源为例进行说明，如图7所示，其中，6个PRACH时频资源分别为RO#0至RO#5，1个PUSCH时频资源为PO#0。RO#0至RO#5，与PO#0在频域均不重叠，均能被确定为发送随机接入前导的PRACH时频资源。在确定一个与PUSCH时频资源集在频域不重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源时，终端设备可以在RO#0至RO#5中选择一个PRACH时频资源，如RO#3，RO#3与PO#0在频域不重叠，确定RO#3为发送随机接入前导的PRACH时频资源；也可以是在RO#0至RO#5中先确定与PO#0在频域不重叠的PRACH时频资源，即RO#0至RO#5，在RO#0至RO#5中选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
时域维度和频域维度
当然了，终端设备也可以同时从时域维度和频域维度出发，在PRACH时频资源集中确定一个PRACH时频资源，作为发送随机接入前导的PRACH时频资源。
具体的，终端设备可以在PRACH时频资源集中确定一个，与PUSCH时频资源集中任一个PUSCH时频资源均不同时在时域和频域重叠的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。仍以图7为例，虽然RO#4与PO#0在时域重叠，但是RO#4与PO#0在频域不重叠，RO#4仍可以被确定为发送随机接入前导的PRACH时频资源。
参照图1和图6所示，假设终端设备配置的PRACH时频资源集和PUSCH时频资源集如图6所示，采用本申请提供的随机接入前导发送方法，终端设备1、终端设备2、终端设备3，均不会将与PUSCH时频资源集(PO#0)在时域和频域重叠的RO#4和RO#5，确定为发送随机接入前导的PRACH时频资源，也不会在RO#4和RO#5上发送随机接入前导，避免了不同终端设备发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突的问题。
另外，如果发送随机接入前导的PRACH时频资源与发送上行数据占用的PUSCH时频资源，在时域上间隔过小，也可能会导致发送随机接入前导占用的PRACH时频资源和发送上行数据占用的PUSCH时频资源存在冲突的问题。
(实现方式二)
因此，在另一种实现方式中，终端设备可以选取与PUSCH时频资源集在时域上间隔大于或者等于第一阈值的PRACH时频资源；也可以选取与PUSCH时频资源集在频域不重叠、且在时域上间隔大于或者等于第二阈值的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。
其中第一阈值和第二阈值可以相同，也可以不同，可以预先定义在终端设备中，也可以是终端设备根据网络设备发送的包含第一阈值和/或第二阈值的广播或组播等消息，进行配置的。
时域维度：
终端设备在PRACH时频资源集中确定一个与PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源。
在一种可能的实施中，终端设备可以在PRACH时频资源集中选择一个PRACH时频资源，并判断选择的PRACH时频资源与PUSCH时频资源集在时域上间隔是否大于第一 阈值，如果是，则将选择的PRACH时频资源确定为发送随机接入前导的PRACH时频资源；如果否，则在PRACH时频资源集中未被选择的PRACH时频资源中重新选择一个PRACH时频资源，返回判断选择的PRACH时频资源与PUSCH时频资源集在时域上间隔是否大于第一阈值的步骤，直至选择的PRACH时频资源与PUSCH时频资源集在时域上间隔大于第一阈值，将选择的PRACH时频资源，确定为发送随机接入前导的PRACH时频资源为止。
在另一种可能的实施中，终端设备也可以先确定PRACH时频资源集中与PUSCH时频资源集在时域上间隔大于第一阈值的所有PRACH时频资源，并在确定的PRACH时频资源集中与PUSCH时频资源集在时域上间隔大于第一阈值的所有PRACH时频资源中，选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
示例性的，以一个PRACH时隙内网络设备配置的6个PRACH时频资源构成PRACH时频资源集、配置的1个PUSCH时频资源构成PUSCH时频资源为例进行说明，如图8所示，其中，6个PRACH时频资源分别为RO#0至RO#5，1个PUSCH时频资源为PO#0，RO#3、RO#4和RO#5，与PO#0在时域上间隔不大于第一阈值(T1)，不能被确定为发送随机接入前导的PRACH时频资源。在确定一个与PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源，作为发送随机接入前导的PRACH时频资源时，终端设备可以在RO#0至RO#5选择一个PRACH时频资源，如RO#0，RO#0与PO#0在时域上间隔大于第一阈值，确定RO#0为发送随机接入前导的PRACH时频资源；也可以是在RO#0至RO#5先确定与PO#0在时域上间隔大于第一阈值的PRACH时频资源，即RO#0至RO#2，在RO#0至RO#2中选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
时域维度和频域维度
终端设备在PRACH时频资源集中确定一个与PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源。
在一种可能的实施中，终端设备可以在PRACH时频资源集中选择一个PRACH时频资源，并判断选择的PRACH时频资源与PUSCH时频资源集是否在频域不重叠、且在时域上间隔大于第二阈值，如果是，则将选择的PRACH时频资源确定为发送随机接入前导的PRACH时频资源；如果否，则在PRACH时频资源集中未被选择的PRACH时频资源中重新选择一个PRACH时频资源，返回判断选择的PRACH时频资源与PUSCH时频资源集是否在频域不重叠、且在时域上间隔大于第二阈值的步骤，直至选择的PRACH时频资源与PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值，将选择的PRACH时频资源确定为发送随机接入前导的PRACH时频资源为止。
在另一种可能的实施中，终端设备也可以先确定PRACH时频资源集中与PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的所有PRACH时频资源，并在确定的与PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的所有PRACH时频资源中，选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
示例性的，以一个PRACH时隙内网络设备配置的6个PRACH时频资源构成PRACH时频资源集、配置的1个PUSCH时频资源构成PUSCH时频资源为例进行说明，如图9所示，其中，6个PRACH时频资源分别为RO#0至RO#5，1个PUSCH时频资源为PO#0。RO#0至RO#2，与PO#0在频域均不重叠、且与PO#0在时域上间隔大于第二阈值(T2)， 均能被确定为发送随机接入前导的PRACH时频资源。在确定一个与PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源，作为发送随机接入前导的PRACH时频资源时，终端设备可以在RO#0至RO#5选择一个PRACH时频资源，如RO#3，RO#3与PO#0在频域不重叠，但在时域上与PO#0的间隔不大于第二阈值，终端设备在RO#0、RO#1、RO#2、RO#4、RO#5中重新选择一个PRACH时频资源，如RO#1，RO#1与PO#0在频域不重叠、且在时域上与PO#0的间隔大于第二阈值，确定RO#1为发送随机接入前导的PRACH时频资源。也可以是在RO#0至RO#5中先确定与PO#0在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源，即RO#0至RO#2，在RO#0至RO#2中选择一个PRACH时频资源，确定为发送随机接入前导的PRACH时频资源。
另外，通常PRACH时频资源集的子载波间隔和PUSCH时频资源集的子载波间隔不相同时，即PRACH时频资源集中的PRACH时频资源，与PUSCH时频资源集中的PUSCH时频资源子载波间隔不同时，网络设备可能需要时间对接收参数等进行调整。因此，终端设备在PRACH时频资源集的子载波间隔和PUSCH时频资源集的子载波间隔相同时，可以不考虑PRACH时频资源与PUSCH时频资源集在时域上间隔是否大于阈值，采用实现方式一中的方法，在PRACH时频资源集中确定一个与PUSCH时频资源集不冲突的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。在PRACH时频资源集的子载波间隔和PUSCH时频资源集的子载波间隔不相同时，考虑PRACH时频资源与PUSCH时频资源集在时域上间隔是否大于阈值，采用实现方式二中的方法，在PRACH时频资源集中确定一个与PUSCH时频资源集不冲突的PRACH时频资源，作为发送随机接入前导的PRACH时频资源。其中PRACH时频资源集的子载波间隔和PUSCH时频资源集的子载波间隔的信息，可以携带在PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息中，终端设备从PRACH时频资源集的配置信息和PUSCH时频资源集的配置信息中获取。
【实施例二】
图10为本申请实施例提供的一种随机接入前导发送过程示意图，该过程包括：
S1001：终端设备接收网络设备发送的配置信息，所述配置信息包括PRACH时频资源集的配置信息。其中，所述PRACH时频资源集中包含至少一个PRACH时频资源。
S1002：所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指示所述PRACH时频资源集中有效的PRACH时频资源。
需要理解的是，本申请实施例中S1001和S1002的先后顺序不对网络设备发送配置信息和指示信息的先后关系进行限定，网络设备可以同时发送配置信息和指示信息，也可以先发送配置信息后发送指示信息，还可以先发送指示信息后发送配置信息。
S1003：所述终端设备在所述有效的PRACH时频资源中的一个PRACH时频资源上发送随机接入前导。
在本申请实施例中，关于PRACH时频资源集的配置信息可参照实施例一中的描述，重复之处，不再进行赘述。
网络设备为了保证对随机接入前导的接收，不会对自身其它业务造成影响，如不会对通过PUSCH时频资源发送(承载)的上行数据的接收造成影响，网络设备还向终端设备发送有用于指示PRACH时频资源集中有效的PRACH时频资源的指示信息，指示终端设备仅在被指示为有效的PRACH时频资源上发送随机接入前导。
示例的，网络设备可以通过广播或者组播消息的方式、或者通过RRC消息等方式，将知识消息发送给终端设备，终端设备接收到网络设备发送的指示信息后，根据指示信息确定根据配置信息配置的PRACH时频资源集中有效的PRACH时频资源。
在本申请实施例中，指示信息可以包括第一位图或索引号或者参数N；也可以包括第二位图或参数K，只要能指示PRACH时频资源集中的有效的PRACH时频资源即可，下面结合具体实现方式进行说明。
方式一：指示信息包括第一位图或索引号或者参数N，用于指示终端设备确定PRACH时频资源集中位于同一PRACH时隙内有效的PRACH时频资源。
(1)指示信息包括第一位图，所述第一位图用于指示PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源在时域上的分布。
在一种可能的实施中，第一位图的长度不小于一个PRACH时隙内在时域上PRACH时频资源的最大数量，第一位图的第一位指示PRACH时频资源集中位于同一PRACH时隙内在时域上的第一个PRACH时频资源是否有效，依次类推第一位图的第二位指示PRACH时频资源集中位于同一PRACH时隙内在时域上的第二个PRACH时频资源是否有效……。具体可以通过1指示与之对应的PRACH时频资源是有效的、通过0指示与之对应的PRACH时频资源是无效的，终端设备只能在有效的PRACH时频资源上发送随机接入前导。以网络设备发送的配置信息中，在每个PRACH时隙内配置有6个PRACH时频资源，即PRACH时频资源集位于同一PRACH时隙内的PRACH时频资源有6个为例，如图11所示，在同一PRACH时隙内的PRACH时频资源有6个依次为RO#0至RO#5，同时网络设备配置的指示信息包括的第一位图为101010，则终端设备在该时隙内确定RO#0、RO#2、RO#4是有效的PRACH时频资源，可以用于发送随机接入前导。
(2)指示信息包括参数N，所述参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个或后N个PRACH时频资源有效或无效。
在一种可能的实施中，参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个PRACH时频资源或后N个PRACH时频资源有效。以参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个PRACH时频资源有效为例，N＝4，PRACH时频资源集中位于某一PRACH时隙内的PRACH时频资源为6个，参照图12所示，位于同一PRACH时隙内的6个PRACH时频资源依次为RO#0至RO#5，终端设备在该PRACH时隙内确定前4个PRACH时频资源有效，即确定RO#0至RO#3是有效的PRACH时频资源，可以用于发送随机接入前导。
在一种可能的实施中，参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个PRACH时频资源或后N个PRACH时频资源无效，则终端设备默认PRACH时频资源集中未被指示为无效的PRACH时频资源有效。以参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的后N个PRACH时频资源无效为例，N＝3，参照图13所示，位于同一PRACH时隙内的6个PRACH时频资源依次为RO#0至RO#5，终端设备在该PRACH时隙内确定后3个PRACH时频资源无效，确定该PRACH时隙内RO#0至RO#2是有效的PRACH时频资源，可以用于发送随机接入前导。
(3)指示信息包括索引号，所述索引号用于指示PRACH时频资源表中的一个表项，所述PRACH时频资源表中的任意一个表项用于定义所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上有效的PRACH时频资源。
在一种可能的实施中，在网络设备和终端设备中预先定义有PRACH时频资源表，或者由网络设备配置并通过广播或组播等消息发送给终端设备有PRACH时频资源表。在PRACH时频资源表中每一个表项用于一种PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上有效的PRACH时频资源，每一个表项与一个唯一的索引号对应。以PRACH时隙内配置PRACH时频资源的数量最多为6个为例，PRACH时频资源表如下所示：
Figure PCTCN2020087891-appb-000005
PRACH时频资源表
参照PRACH时频资源表所示，如果指示信息中包含的索引号为0，则在终端设备确定PRACH时频资源中位于同一PRACH时隙内的PRACH时频资源中，在时域上的第一个PRACH时频资源有效、第二个PRACH时频资源无效、第三个PRACH时频资源有效、第四个PRACH时频资源无效、第五个PRACH时频资源有效、第六个PRACH时频资源无效。其中如果实际配置在某一PRACH时隙内的PRACH时频资源数量小于PRACH时频资源表配置的PRACH时频资源数量时，仅使用PRACH时频资源表配置的前M个PRACH时频资源是否有效的配置，M等于在一个PRACH时隙内实际配置的PRACH时频资源数量。
另外，因为上述通过第一位图或索引号或者参数N，指示终端设备确定PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源，均是从时域上指示终端设备确定位于同一PRACH时隙内的有效的PRACH时频资源。当配置有PRACH时频资源频分复用时，即在相同时域资源上可能出现两个或两个以上的PRACH时频资源时，在本申请实施例中，可应用于时域资源相同的所有频分复用的PRACH时频资源，也就是说，当配置有PRACH时频资源频分复用时，上述指示信息指示的是位于同一PRACH时隙内的有效的PRACH时域资源，包括该PRACH时域资源上的所有PRACH时频资源。以某一PRACH时隙为例，如图14所示，在该PRACH时隙内，存在PRACH时频资源频分复用，在时域资源上有2个位于第一个PRACH时域资源的PRACH时频资源(RO#0 0、RO#0 1)、2个位于第二个PRACH时域资源的PRACH时频资源(RO#1 0、RO#1 1)……时，如第一位图为101010，则指示位于同一PRACH时隙内的PRACH时频资源，在时域上第一个PRACH时频资源有效(RO#0 0、RO#0 1)、在时域上第二个PRACH时频资源无效(RO#1 0、 RO#1 1)……。
如图15所示，在某一PRACH时隙内，存在PRACH时频资源频分复用，在时域资源上有2个位于第一个PRACH时域资源的PRACH时频资源(RO#0 0、RO#0 1)、2个位于第二个PRACH时域资源的PRACH时频资源(RO#1 0、RO#1 1)……时，如参数N＝3，N指示的是位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个PRACH时域资源有效，则指示位于同一PRACH时隙内的PRACH时频资源，在时域上第一个PRACH时域资源上的PRACH时频资源有效(RO#0 0、RO#0 1)、在时域上第二个PRACH时域资源上的PRACH时频资源有效(RO#1 0、RO#1 1)、在时域上第三个PRACH时域资源上的PRACH时频资源有效(RO#2 0、RO#2 1)、在时域上第四个PRACH时域资源上的PRACH时频资源无效(RO#3 0、RO#3 1)、在时域上第五个PRACH时域资源上的PRACH时频资源无效(RO#4 0、RO#4 1)、在时域上第六个PRACH时域资源上的PRACH时频资源无效(RO#5 0、RO#5 1)。
在另一种可能的实施中，参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时频域上的前N个PRACH时频资源或后N个PRACH时频资源有效。以参数N用于指示PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时频域上的前N个PRACH时频资源有效为例，N＝3，如图16所示，在某一PRACH时隙内，存在PRACH时频资源频分复用，在时域资源上有2个位于第一个PRACH时域资源的PRACH时频资源(RO#0 0、RO#0 1)、2个位于第二个PRACH时域资源的PRACH时频资源(RO#1 0、RO#1 1)……时，则PRACH时频资源RO#0 0、RO#0 1、RO#1 0有效，其余PRACH时频资源无效。
当然了，当配置有PRACH时频资源频分复用时，即在相同时域资源上可能出现两个或两个以上的PRACH时频资源，PRACH时频资源指示信息可以仅适用于其中一个或者多个频段内的PRACH时频资源，指示信息在频域的适用范围可以是预定义的，例如，仅适用于频段最低的PRACH时频资源；指示信息在频域的适用范围也由网络设备配置，如网络设备可通过其他信令指示该指示信息在频域的适用范围。其它未被指示的PRACH时频资源终端设备可以默认为有效，也可以默认为无效。如图17所示，指示信息只适用于R0#0 0～R0#5 0，对于未被指示的R0#0 1～R0#5 1，终端设备可以默认为有效。
方式二：指示信息包括第二位图或参数K，用于指示终端设备确定PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙。
(1)指示信息包括第二位图，所述第二位图用于指示PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙在时域上的分布。
在一种可能的实施中，第一位图的长度不小于位于一个无线帧内的PRACH时隙的最大数量，第二位图的第一为指示PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的第一个PRACH时隙是否有效，依次类推第二位图的第二位指示PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的第二个PRACH时隙是否有效……。具体可以通过1指示与之对应的PRACH时隙有效，通过0指示与之对应的PRACH时隙无效。终端设备只能在被指示有效的PRACH时隙内确定用于发送随机接入前导的PRACH时频资源。如终端设备可以默认被指示有效的PRACH时隙上所有的PRACH时频资源有效，可用于发送随机接入前导。
(2)指示信息包括参数K，所述参数K用于指示PRACH时频资源集中位于同一无 线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效或无效。
在一种可能的实施中，参数K用于指示PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效。终端设备只能在被指示有效的PRACH时隙上确定用于发送随机接入前导的PRACH时频资源。
在又一种可能的实施中，参数K用于指示PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙无效。终端设备将PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上未被指示为无效的PRACH时隙，默认为有效的PRACH时隙，只能在有效的PRACH时隙上确定用于发送随机接入前导的PRACH时频资源。
基于方式二，终端设备可以确定PRACH时频资源集中位于同一无线帧内PRACH时频资源占用的有效的PRACH时隙，终端设备可以直接将PRACH时频资源集中，位于有效的PRACH时隙内的PRACH资源均确定为有效的PRACH时频资源。
可选的，网络设备发送的配置信息中包括第二位图或参数K，用于指示终端设备确定PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中有效的PRACH时隙(方式二)，并且在配置信息中还包括第一位图或索引号或者参数N，用于指示终端设备确定PRACH时频资源集中被指示为有效的PRACH时隙内有效的PRACH时频资源，终端设备仅能在有效的PRACH时隙内有效的PRACH时频资源上发送随机接入前导。
可选的，网络设备发送的配置信息中包括第二位图或参数K，用于指示终端设备确定PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中有效的PRACH时隙(方式二)，终端设备可以默认被指示有效的PRACH时隙上所有的PRACH时频资源有效，并且在配置信息中还包括第一位图或索引号或者参数N，用于指示终端设备确定PRACH时频资源集中未被指示为有效的PRACH时隙内有效的PRACH时频资源，使得终端设备在有效的PRACH时频资源上发送随机接入前导。
【实施例三】
基于与上述随机接入前导发送方法相同的构思，如图18所示，本申请实施例还提供了一种通信装置1800，该通信装置1800可包括收发单元1801和处理单元1802。
在一种可能的实施中，通信装置用于执行图4对应的第一种随机接入前导发送方法中终端设备执行的步骤。
具体的，收发单元1801，用于接收网络设备发送的配置信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息和物理上行共享信道PUSCH时频资源集的配置信息；
处理单元1802，用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源；
所述收发单元1801，还用于在所述处理单元1802确定的PRACH时频资源上发送随机接入前导。
在一种可能的设计中，所述处理单元1802采用以下方式中的一种，在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源：
在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源；
在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源。
在一种可能的设计中，所述处理单元1802在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源时，具体用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源；和/或
所述处理单元1802在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源时，具体用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源。
在一种可能的设计中，所述处理单元1802还用于在所述PRACH时频资源集中确定PRACH时频资源之前，确定所述PRACH时频资源集的子载波间隔和所述PUSCH时频资源集的子载波间隔不相同。
在一种可能的实施中，通信装置用于执行图10对应的第一种随机接入前导发送实现方法中终端设备执行的步骤。
具体的，收发单元1801，用于接收网络设备发送的配置信息，以及接收所述网络设备发送的指示信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息；所述指示信息用于指示所述PRACH时频资源集中有效的PRACH时频资源；
处理单元1802，用于在所述PRACH时频资源集中有效的PRACH时频资源中确定一个PRACH时频资源；
所述收发单元1801，还用于在所述处理单元1802确定的PRACH时频资源上发送随机接入前导。
在一种可能的设计中，所述指示信息包括第一位图或索引号或者参数N；其中，
所述第一位图用于指示所述PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源在时域上的分布；
所述参数N用于指示所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个或后N个PRACH时频资源有效或无效；
所述索引号用于指示PRACH时频资源表中的一个表项，所述PRACH时频资源表中的任意一个表项用于定义所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上有效的PRACH时频资源。
在一种可能的设计中，所述指示信息包括第二位图或参数K；其中，
所述第二位图用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙在时域上的分布；
所述参数K用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效或无效。
基于与上述随机接入前导发送方法相同的构思，本申请实施例还提供一种终端设备，如图19所示，该终端设备可适用于图1所示出的系统中，执行上述方法实施例中终端设备的功能。为了便于说明，图19仅示出了终端设备的主要部件。如图19所示，终端设备 190包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述方法实施例中所描述的动作，如，根据参考信号指示信息，发送上行数据等。存储器主要用于存储软件程序和数据，例如存储上述实施例中所描述指示信息与组合信息的对应关系等。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图19仅示出了一个存储器和一个处理器。在实际的终端设备中，可以存在多个处理器和多个存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限定。
作为一种可选的实现方式，处理器可以包括基带处理器和/或中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图19中的处理器可以集成基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在本申请实施例中，可以将具有收发功能的天线和控制电路视为终端设备190的收发单元1901，例如，用于支持终端设备执行接收功能和发送功能。将具有处理功能的处理器视为终端设备190的处理单元1902。如图19所示，终端设备190包括收发单元1901和处理单元1902。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1901中用于实现接收功能的器件视为接收单元，将收发单元1901中用于实现发送功能的器件视为发送单元，即收发单元1901包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
处理器1902可用于执行该存储器存储的指令，以控制收发单元1901接收信号和/或发送信号，完成上述方法实施例中终端设备的功能。作为一种实现方式，收发单元1901的功能可以考虑通过收发电路或者收发的专用芯片实现。
基于与上述随机接入前导发送方法相同的构思，本申请实施例还提供了一种计算机可读介质，所述存储介质存储有计算机指令，当所述计算机指令被终端设备执行时，使得所述终端设备实现上述任一方法实施例所述的随机接入前导发送方法。
基于与上述随机接入前导发送方法相同的构思，本申请实施例还提供了一种计算机程序产品，当所述计算机指令被终端设备执行时，使得所述终端设备实现上述任一方法实施例所述的随机接入前导发送方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如，固态硬盘(Solid State Disk，SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可以用硬件实现，或固件实现，或它们的组合方式来实现。当使用软件实现时，可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个 地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的，那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本申请所使用的，盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟，其中盘通常磁性的复制数据，而碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。
总之，以上所述仅为本申请技术方案的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (17)

  1. 一种随机接入前导发送方法，其特征在于，包括：
    终端设备接收网络设备发送的配置信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息；
    所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指示所述PRACH时频资源集中有效的PRACH时频资源；
    所述终端设备在所述有效的PRACH时频资源中的一个PRACH时频资源上发送随机接入前导。
  2. 如权利要求1所述的方法，其特征在于，所述指示信息包括第一位图或索引号或者参数N；其中，
    所述第一位图用于指示所述PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源在时域上的分布；
    所述参数N用于指示所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个或后N个PRACH时频资源有效或无效；
    所述索引号用于指示PRACH时频资源表中的一个表项，所述PRACH时频资源表中的任意一个表项用于定义所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上有效的PRACH时频资源。
  3. 如权利要求1或2所述的方法，其特征在于，所述指示信息包括第二位图或参数K；其中，
    所述第二位图用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙在时域上的分布；
    所述参数K用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效或无效。
  4. 一种随机接入前导发送方法，其特征在于，包括：
    终端设备接收网络设备发送的配置信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息和物理上行共享信道PUSCH时频资源集的配置信息；
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源；
    所述终端设备在确定的所述PRACH时频资源上发送随机接入前导。
  5. 如权利要求4所述的方法，其特征在于，所述终端设备采用以下方式中的一种，在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源：
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源；
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源。
  6. 如权利要求5所述的方法，其特征在于，所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源，包括：
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时 域上间隔大于第一阈值的PRACH时频资源；和/或
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源，包括：
    所述终端设备在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源。
  7. 如权利要求6所述的方法，其特征在于，所述终端设备在所述PRACH时频资源集中确定PRACH时频资源之前，所述方法还包括：
    所述终端设备确定所述PRACH时频资源集的子载波间隔和所述PUSCH时频资源集的子载波间隔不相同。
  8. 一种通信装置，其特征在于，所述装置包括：
    收发单元，用于接收网络设备发送的配置信息，以及接收所述网络设备发送的指示信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息；所述指示信息用于指示所述PRACH时频资源集中有效的PRACH时频资源；
    处理单元，用于在所述PRACH时频资源集中有效的PRACH时频资源中确定一个PRACH时频资源；
    所述收发单元，还用于在所述处理单元确定的PRACH时频资源上发送随机接入前导。
  9. 如权利要求8所述的通信装置，其特征在于，所述指示信息包括第一位图或索引号或者参数N；其中，
    所述第一位图用于指示所述PRACH时频资源集中位于同一PRACH时隙内的有效的PRACH时频资源在时域上的分布；
    所述参数N用于指示所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上的前N个或后N个PRACH时频资源有效或无效；
    所述索引号用于指示PRACH时频资源表中的一个表项，所述PRACH时频资源表中的任意一个表项用于定义所述PRACH时频资源集中位于同一PRACH时隙内的PRACH时频资源中，在时域上有效的PRACH时频资源。
  10. 如权利要求8或9所述的通信装置，其特征在于，所述指示信息包括第二位图或参数K；其中，
    所述第二位图用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的有效的PRACH时隙在时域上的分布；
    所述参数K用于指示所述PRACH时频资源集中位于同一无线帧内的PRACH时频资源占用的PRACH时隙中，在时域上的前K个或后K个PRACH时隙有效或无效。
  11. 一种通信装置，其特征在于，所述装置包括：
    收发单元，用于接收网络设备发送的配置信息，所述配置信息包括物理随机接入信道PRACH时频资源集的配置信息和物理上行共享信道PUSCH时频资源集的配置信息；
    处理单元，用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源；
    所述收发单元，还用于在所述处理单元确定的PRACH时频资源上发送随机接入前导。
  12. 如权利要求11所述的通信装置，其特征在于，所述处理单元采用以下方式中的一种，在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集不冲突的PRACH时频资源：
    在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源；
    在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源。
  13. 如权利要求12所述的通信装置，其特征在于，所述处理单元在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域不重叠的PRACH时频资源时，具体用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在时域上间隔大于第一阈值的PRACH时频资源；和/或
    所述处理单元在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠的PRACH时频资源时，具体用于在所述PRACH时频资源集中确定一个与所述PUSCH时频资源集在频域不重叠、且在时域上间隔大于第二阈值的PRACH时频资源。
  14. 如权利要求13所述的通信装置，其特征在于，所述处理单元还用于在所述PRACH时频资源集中确定PRACH时频资源之前，确定所述PRACH时频资源集的子载波间隔和所述PUSCH时频资源集的子载波间隔不相同。
  15. 一种终端设备，其特征在于，包括存储器和处理器；
    存储器，用于存储计算机程序；
    处理器，用于执行所述存储器中存储的计算机程序，以使得所述终端设备置执行如权利要求1-3或4-7中任一项所述的方法。
  16. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机指令，当所述计算机指令被终端设备执行时，使得所述终端设备执行如权利要求1-3或4-7中任一项所述的方法。
  17. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令，当所述计算机指令被终端设备执行时，使得所述终端设备执行如权利要求1-3或4-7中任一项所述的方法。
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