WO2019137087A1 - 随机接入方法、装置、存储介质及电子设备 - Google Patents

随机接入方法、装置、存储介质及电子设备 Download PDF

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Publication number
WO2019137087A1
WO2019137087A1 PCT/CN2018/114917 CN2018114917W WO2019137087A1 WO 2019137087 A1 WO2019137087 A1 WO 2019137087A1 CN 2018114917 W CN2018114917 W CN 2018114917W WO 2019137087 A1 WO2019137087 A1 WO 2019137087A1
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Prior art keywords
sequence
information
random access
configuration
indication information
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PCT/CN2018/114917
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English (en)
French (fr)
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梁亚超
张峻峰
李剑
郝鹏
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中兴通讯股份有限公司
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Publication of WO2019137087A1 publication Critical patent/WO2019137087A1/zh

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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
    • 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 present disclosure relates to, but is not limited to, the field of communications.
  • 5G fifth generation mobile communication
  • 5G Compared with the traditional Long Term Evolution (LTE) technology, 5G has been improved in many aspects.
  • 5G adds a preamble sequence of length 139 or 127 in addition to the same preamble sequence of length 839 as LTE.
  • a leader sequence of length 839 may be referred to as a long sequence, and a leader sequence of length 139 or 127 may be referred to as a short sequence.
  • the subcarrier spacing of the preamble sequence also changes.
  • the subcarrier spacing of the long sequence becomes 1.25KHz and 5KHz; the subcarrier spacing of the newly added short sequence is 15KHz, 30KHz, 60KHz and 120KHz. .
  • the restriction set can be classified into three cases, without limitation (when the long sequence is used in a low speed scenario, there is no need to limit the indication), the restriction set A, and the restriction set B.
  • the existence of the restriction set affects the length of the cyclic shift in the preamble sequence, which in turn affects the generation of the long sequence. Therefore, in the random access configuration, the restriction set of the long sequence needs to be indicated. Since there are three cases of the restriction set, 2 bits are required for indication.
  • the four long-sequence random access formats that have been determined, it can be represented by format 0, format 1, format 2, format 3, where the sub-carrier spacing in the first three long-sequence random access formats is 1.25 kHz.
  • the subcarrier spacing in format 3 is 5KHz.
  • Short sequences are added to 5G to support new usage scenarios and new performance requirements.
  • the carrier frequency is usually high frequency communication above 6 GHz, and low frequency communication in a small range. Therefore, the short sequence uses four seed carrier intervals, of which 15KHz, 30KHz is used in low frequency communication scenarios, 60KHz, 120KHz is used in high frequency communication scenarios.
  • the short-sequence random access format that has been determined, it is divided into A1, B1, A1/B1, A2, A2/B2, A3, A3/B3, B4, C0, C2, etc., and all random access formats are It can be used for the above four seed carrier spacing, so the short sequence preamble sequence cannot indicate the subcarrier spacing, so it needs to be indicated by at least 1 bit.
  • the random access configuration table is also required in the 5G to provide the format of the corresponding random access and parameters such as time and frequency.
  • the restriction set of the long sequence and the subcarrier spacing of the short sequence respectively need 3 bits in the system message.
  • the short sequence does not need to limit the indication of the set; when the short sequence needs to indicate the subcarrier spacing, the long sequence does not require an indication of the subcarrier spacing.
  • the indication of the subcarrier spacing is redundant, so the 1 bit indication overhead is a waste; for the same reason, for short sequences, the indication of the restriction set is redundant, and the 2bit indication is also wasted.
  • Embodiments of the present disclosure provide a random access method, apparatus, storage medium, and electronic device.
  • a random access method including: receiving indication information from a base station, where the indication information carries a random access configuration index indicated by the base station and configuration information of a sequence; Random access is performed according to the indication information.
  • a random access method including: determining indication information for a terminal to perform random access, where the indication information carries a random access configuration index and sequence configuration information; Sending the indication information to the terminal.
  • a random access apparatus including: a receiving module, configured to receive indication information from a base station, where the indication information carries a random access configuration index indicated by the base station And the configuration information of the sequence; the access module is configured to perform random access according to the indication information.
  • a random access apparatus including: a determining module, configured to determine indication information for a terminal to perform random access, where the indication information carries a random access configuration index and The configuration information of the sequence; the sending module is configured to send the indication information to the terminal.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any one of the method embodiments described above at runtime.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the computer program to perform any of the above The steps in the method embodiments.
  • the terminal receives the random access configuration index and the sequence configuration information indicated by the base station, and performs random access according to the indication information, where the terminal can receive the random access according to the indication information.
  • the configuration index to determine whether the sequence indicated by the current base station is a long sequence or a short sequence, thereby eliminating the need to use configuration information to indicate the type of the sequence, reducing the number of bits of the configuration information, and since the random access configuration index is an existing indication
  • the content carried in the information thereby reducing the overall number of bits of the indication information. Therefore, the problem of unnecessary indication overhead existing in the prior art can be solved, and unnecessary indication overhead in the system message is reduced, thereby achieving Eliminate the benefits of waste.
  • FIG. 1 is a block diagram showing a hardware structure of a mobile terminal according to a random access method according to an embodiment of the present disclosure
  • FIG. 2 is a flow chart of a random access method in accordance with an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method for transmitting indication information according to an embodiment of the present disclosure
  • FIG. 4 is a structural block diagram of a random access device according to an embodiment of the present disclosure.
  • FIG. 5 is a structural block diagram of an indication information transmitting apparatus according to an embodiment of the present disclosure.
  • the long-sequence subcarrier spacing is 1.25 kHz and 5 kHz, in a high-speed scene, for example, a scene of 120 km/h or more, the Doppler frequency offset is greatly affected, which may seriously affect system performance. Therefore, in the random access using long sequence, it is necessary to increase the restriction set to cope with the Doppler frequency offset in the high speed scene, and the long sequence does not need to separately indicate the subcarrier spacing, because the long sequence random access format indication includes Subcarrier spacing information. Compared with the long sequence, the minimum subcarrier spacing in the short sequence is 15KHz.
  • the Doppler frequency offset is less affected, so the preamble sequence is generated in a short sequence.
  • the long sequence case is not used for the high frequency scene, so only the long sequence and the short sequence exist in the random access configuration table of the low frequency TDD and the low frequency FDD.
  • FIG. 1 is a hardware structural block diagram of a mobile terminal of a random access method according to an embodiment of the present disclosure.
  • mobile terminal 10 may include one or more (only one shown in FIG. 1) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. And a memory 104 configured to store data.
  • the mobile terminal may further include a transmission device 106 configured as a communication function and an input and output device 108.
  • the structure shown in FIG. 1 is merely illustrative, and does not limit the structure of the above mobile terminal.
  • the mobile terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.
  • the memory 104 can be configured to store a computer program, such as a software program and modules of application software, such as a computer program corresponding to a random access method in an embodiment of the present disclosure, the processor 102 running a computer program stored in the memory 104 In order to perform various functional applications and data processing, the above method is implemented.
  • Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 104 may further include memory remotely located relative to processor 102, which may be connected to mobile terminal 10 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 106 is configured to receive or transmit data via a network.
  • the above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 10.
  • the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 can be a Radio Frequency (RF) module configured to communicate with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF Radio Frequency
  • FIG. 2 is a flowchart of a random access method according to an embodiment of the present disclosure. As shown in FIG. 2, the process includes the following steps:
  • Step S202 receiving indication information from the base station, where the indication information carries a random access configuration index indicated by the base station and configuration information of the sequence;
  • Step S204 performing random access according to the indication information.
  • the above operation may be a terminal, for example, it may be the terminal shown in Embodiment 1.
  • the terminal receives the random access configuration index and the sequence configuration information indicated by the base station, and performs random access according to the indication information, where the terminal receives the indication information from the base station, where the current access configuration index may be used to determine the current Whether the sequence indicated by the base station is a long sequence or a short sequence, so that the configuration information is not used to indicate the type of the sequence, the number of bits of the configuration information is reduced, and since the random access configuration index is the content carried in the existing indication information, Therefore, the overall number of bits of the indication information is reduced. Therefore, the problem of unnecessary indication overhead existing in the related art can be solved, the unnecessary indication overhead in the system message is reduced, and the beneficial effect of eliminating bit waste is achieved.
  • the configuration information when the sequence indicated by the random access configuration index is a long sequence, is a restricted sequence information of a long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration is configured.
  • the information is a short sequence of subcarrier spacing information.
  • the random access configuration index is used to indicate type information of the sequence.
  • the terminal may use the random access configuration index to indicate the type of the sequence, that is, whether the sequence is a long sequence or a short sequence, that is, in this embodiment, there is no need to configure the sequence.
  • the information indicates the type of the sequence, and the random access configuration index is used to indicate the type of the sequence, thereby reducing the indication overhead of the configuration information to a certain extent, thereby implementing the indication overhead of reducing the indication information.
  • the method before performing random access according to the foregoing indication information, the method further includes: determining, according to a correspondence between a random access configuration index and a type of the sequence, the sequence indicated by the random access configuration index. Type, where the correspondence between the random access configuration index and the type of the sequence is predefined.
  • the correspondence between the random access configuration index and the type of the sequence is pre-configured by the base station, and the base station can flexibly set the correspondence according to the actual transmission requirement. Therefore, the correspondence is clear to both the base station and the terminal. .
  • a partial index in a configuration table (which may employ a 5G random access configuration table in the related art, and 256 indexes in the configuration table) may be used to correspond to a long sequence (for example, index 0-63 indicates a long sequence), part The index corresponds to a short sequence (eg, indexing 64-255 indicates a short sequence).
  • the foregoing configuration information is restriction set information or subcarrier spacing information. That is to say, the configuration information is one of restriction set information and subcarrier spacing information, that is, the configuration information indicates only one type of information.
  • the configuration information is only the restriction set information; when the random access configuration index indicates only the short sequence, the configuration information is only the subcarrier spacing information.
  • the random access is performed.
  • the configuration index only indicates one type of sequence, that is, only indicates a long sequence or only a short sequence, and cannot indicate a long sequence and a short sequence at the same time.
  • the configuration information can only be the corresponding restriction set information or only It is subcarrier spacing information, that is, the restriction set information and the subcarrier spacing information cannot be configured at the same time.
  • the size of the configuration information in the indication information received by the terminal may be two bits (since the type of the sequence is not required to be indicated in the configuration information, two bits may be used to indicate the restriction set or the subcarrier spacing. That is, one bit of the three bits indicating the restriction set of the long sequence or the subcarrier spacing of the short sequence in the system message in the prior art is reduced, leaving only two bits.
  • the configuration information is the restriction set information
  • 2 bits in the configuration information is used to indicate a restriction set of the foregoing sequence, for example, 00 indicates no limit, 01 indicates a restriction set A, and 10 indicates a restriction set.
  • the configuration information is subcarrier spacing information
  • 1 bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
  • the high frequency low frequency will be naturally distinguished when the terminal accesses the network, so only one bit is needed to indicate the subcarrier spacing of the short sequence.
  • FIG. 3 is a flowchart of a random access method according to an embodiment of the present disclosure. It may also be understood as a method for sending an indication information. As shown in FIG. 3, the process includes the following steps:
  • Step S302 determining indication information for the terminal to perform random access, where the indication information carries a random access configuration index and sequence configuration information;
  • Step S304 the foregoing indication information is sent to the terminal.
  • the above operation may be performed by the base station (or other network elements on the network side).
  • the indication information of the base station carries the random access configuration index and the sequence configuration information indicated by the base station, and performs random access according to the indication information
  • the sequence indicated by the current base station may be determined according to the random access configuration index. Whether it is a long sequence or a short sequence, so that the configuration information is not required to indicate the type of the sequence, the number of bits of the configuration information is reduced, and since the random access configuration index is the content carried in the existing indication information, the indication is lowered.
  • the overall number of bits of the information therefore, can solve the problem of unnecessary indication overhead existing in the prior art, reduce unnecessary indication overhead in the system message, and thus achieve the beneficial effect of eliminating bit waste.
  • the configuration information when the sequence indicated by the random access configuration index is a long sequence, is a restricted sequence information of a long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration is configured.
  • the information is a short sequence of subcarrier spacing information.
  • the random access configuration index is used to indicate the type information of the sequence.
  • the base station side may use a random access configuration index to indicate the type of the sequence, that is, whether the sequence is a long sequence or a short sequence. That is to say, it is not necessary to indicate the type of the predetermined sequence in the configuration information, but the random access configuration index is used to indicate the type of the predetermined sequence, thereby reducing the indication overhead of the configuration information to some extent.
  • the method before determining the indication information for the terminal to perform random access, the method further includes: predefining a correspondence between the random access configuration index and the type of the sequence.
  • the correspondence between the random access configuration index and the type of the sequence is pre-configured by the base station, and the base station can flexibly set the correspondence according to the actual transmission requirement, and the correspondence is clear to both the base station and the terminal.
  • a partial index in a configuration table (which may employ a 5G random access configuration table in the related art, and 256 indexes in the configuration table) may be used to correspond to a long sequence (for example, index 0-63 indicates a long sequence), part The index corresponds to a short sequence (eg, indexing 64-255 indicates a short sequence).
  • the configuration information is restriction set information or subcarrier spacing information. That is to say, the configuration information is one of restriction set information and subcarrier spacing information, that is, the configuration information indicates only one type of information.
  • the configuration information is only restriction set information; when the random access configuration index indicates only a short sequence, the configuration information is only subcarrier spacing information.
  • the random access configuration index indicates only one type of sequence, that is, only indicates a long sequence or only a short sequence, and cannot indicate a long sequence and a short sequence at the same time.
  • the configuration information can only It is the corresponding restriction set information or only the subcarrier spacing information, that is, the restriction set information and the subcarrier spacing information cannot be configured at the same time.
  • the size of the configuration information in the indication information sent by the base station to the terminal may be two bits.
  • Interval that is, one of the three bits of the subcarrier spacing indicating the restricted sequence of the long sequence or the subcarrier spacing of the short sequence in the system message in the prior art is reduced, leaving only two bits.
  • the configuration information is the restriction set information
  • 2 bits in the configuration information is used to indicate a restriction set of the foregoing sequence, for example, 00 indicates no limit, 01 indicates a restriction set A, and 10 indicates a restriction set.
  • the configuration information is subcarrier spacing information
  • 1 bit in the configuration information is used to indicate the subcarrier spacing of the foregoing sequence.
  • the solution adopted by the embodiment of the present disclosure is to use a random access configuration index and 2 bits to jointly indicate a restricted sequence of a long sequence and a subcarrier spacing of a short sequence, that is, to delete a system message (corresponding to the above indication information).
  • One of the three bits of the restriction set of the long sequence and the subcarrier of the short sequence are respectively indicated, and only two bits are reserved.
  • the specific method is as follows. According to the agreement of the standard conference, the 5G random access configuration table has a total of 256 configuration indexes, which are represented by 0-255. Then in the configuration table low frequency TDD and low frequency FDD, it is assumed that the configuration index 0-63 indicates a long sequence, and the remaining configuration indexes indicate a short sequence.
  • the configuration index of the long sequence or the short sequence is indicated, and the base station (or the network side) can be flexibly set according to actual transmission requirements.
  • the configuration index is 0-63, indicating that the long sequence is indicated at this time, then 2 bits are used to indicate the restricted set of the long sequence. For example, 00 means unlimited, 01 means restricted set A, and 10 means restricted set B. .
  • the configuration index is 64-255, it indicates that the short sequence is indicated at this time.
  • the short sequence uses two subcarrier spacings of 15KHz and 30KHz, and then one of the 2 bits indicated by the restriction set. The bits are used to indicate the subcarrier spacing of the short sequence.
  • the terminal receives the random access configuration index indicated in the system message and two bits including the restriction set indication or the subcarrier spacing indication.
  • the random access configuration index it is judged whether it is a long sequence or a short sequence. If it is a long sequence, the two bits are used for the restriction set indication of the long sequence, and if it is a short sequence, one of the two bits is Used to indicate the subcarrier spacing of the short sequence.
  • the base station configures the random access system message and the terminal receives the random access system message. If it is necessary to effectively save the signaling overhead, the selection process of the two branches must exist, which is an act of avoiding.
  • the information indication bit overhead in random access can be reduced, and bit waste in the system information indication is avoided.
  • a random access device is also provided, and the foregoing device is configured to implement the foregoing embodiments and optional implementation manners, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 4 is a structural block diagram of a random access device, which may be disposed on an electronic device (such as a terminal) that performs the method shown in FIG. 2, as shown in FIG. 4, the device includes: receiving The module 42 is configured to receive the indication information from the base station, where the indication information carries the random access configuration index and the sequence configuration information indicated by the base station, and the access module 44 is connected to the receiving module 42 and configured to perform according to the indication information. Random access.
  • the configuration information is the restriction set information of the long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration information is a short sequence.
  • Subcarrier spacing information when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restriction set information of the long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration information is a short sequence.
  • the random access configuration index is used to indicate type information of the sequence.
  • the access module 44 is further configured to determine, according to the correspondence between the random access configuration index and the type of the sequence, the type of the sequence indicated by the random access configuration index. Wherein, the correspondence between the random access configuration index and the type of the sequence is predefined.
  • the foregoing configuration information is restriction set information or subcarrier spacing information.
  • the configuration information is the restriction set information
  • 2 bits in the configuration information is used to indicate the restriction set of the foregoing sequence.
  • the configuration information is subcarrier spacing information
  • 1 bit in the configuration information is used to indicate a subcarrier spacing of the foregoing sequence.
  • FIG. 5 is a structural block diagram of a random access device disposed on an electronic device (such as a base station or the like) that performs the method shown in FIG. 3, as shown in FIG. 5, the device includes: determining, according to an embodiment of the present disclosure
  • the module 52 is configured to determine the indication information for the terminal to perform the random access, where the indication information carries the random access configuration index and the configuration information of the sequence, and the sending module 54 is connected to the determining module 52, configured to send the indication information.
  • the module 52 is configured to determine the indication information for the terminal to perform the random access, where the indication information carries the random access configuration index and the configuration information of the sequence
  • the sending module 54 is connected to the determining module 52, configured to send the indication information. Give the terminal.
  • the configuration information is the restriction set information of the long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration information is a short sequence.
  • Subcarrier spacing information when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restriction set information of the long sequence; when the sequence indicated by the random access configuration index is a short sequence, the configuration information is a short sequence.
  • the random access configuration index is used to indicate type information of the sequence.
  • the determining module 52 is further configured to pre-define a correspondence between the random access configuration index and the type of the sequence.
  • the foregoing configuration information is restriction set information or subcarrier spacing information.
  • the configuration information is the restriction set information
  • 2 bits in the configuration information is used to indicate the restriction set of the foregoing sequence.
  • the configuration information is subcarrier spacing information
  • 1 bit in the configuration information is used to indicate a subcarrier spacing of the foregoing sequence.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present disclosure also provide a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • the foregoing storage medium may include, but is not limited to, a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk, and the like, which can store a computer program.
  • An embodiment of the present disclosure further provides an electronic device, which may be a terminal or a base station, including a memory and a processor, where the computer stores a computer program, and the processor is configured to run a computer program to execute any of the foregoing methods.
  • an electronic device which may be a terminal or a base station, including a memory and a processor, where the computer stores a computer program, and the processor is configured to run a computer program to execute any of the foregoing methods. The steps in the examples.
  • the electronic device may further include a transmission device and an input and output device, wherein the transmission device is connected to the processor, and the input and output device is connected to the processor.
  • modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

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Abstract

本公开提供了一种随机接入方法、装置、存储介质及电子设备，该方法包括：接收来自基站的指示信息，其中，所述指示信息中携带所述基站指示的随机接入配置索引以及序列的配置信息；根据所述指示信息进行随机接入。

Description

随机接入方法、装置、存储介质及电子设备
相关申请的交叉引用
本申请基于申请号为201810032511.X、申请日为2018年01月12日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及但不限于通信领域。
背景技术
随着无线通信技术的发展和用户对通信需求的日益增加，为了满足更高、更快和更新的通信需要，第五代移动通信(5th Generation，简称为5G)技术已成为未来网络发展的趋势。
相比于传统的长期演进(Long Term Evolution，简称为LTE)技术，5G中在许多方面都进行了相应的改进。在随机接入中，5G除了使用与LTE相同的，长度为839的前导序列之外，增加了一种长度为139或127的前导序列。长度为839的前导序列可以称之为长序列，长度为139或127的前导序列可以称之为短序列。除了前导序列的长度发生了变化，前导序列的子载波间隔也发生了变化，长序列的子载波间隔变为1.25KHz和5KHz；新增加的短序列的子载波间隔为15KHz，30KHz，60KHz和120KHz。
相关技术中，根据长序列的使用场景，限制集可分为三种情况，无限制(当长序列在低速场景中使用时，不需要限制指示)、限制集A和限制集B。限制集的存在会影响前导序列中循环移位的长度，进而影响长序列的生成，所以在随机接入配置中需要对长序列的限制集进行指示。因为限制集存在三种情况，所以需要2个比特(bit)进行指示。在已经确定了的四种长序列的随机接入格式中，可以用format 0，format 1，format 2，format 3 表示，其中前三个长序列随机接入格式中的子载波间隔为1.25KHz，format 3中子载波间隔为5KHz。
5G中加入短序列是为了支持新的使用场景与新提出的性能要求。例如载波频率通常在6GHz以上的高频通信，以及小范围内的低频通信。所以短序列使用了四种子载波间隔，其中15KHz，30KHz用在低频通信场景，60KHz，120KHz用在高频通信场景。在已经确定的短序列的随机接入格式中，分为A1，B1，A1/B1，A2，A2/B2，A3，A3/B3，B4，C0，C2等，并且所有的随机接入格式都可用于上述的四种子载波间隔，因此短序列的前导序列格式无法对子载波间隔进行指示，所以需要至少用1个比特进行指示。
同LTE一样，5G中也需要通过随机接入配置表来提供相应的随机接入使用的格式以及时间、频率等参数。根据标准会议中已经达成的协议(agreement)可知，5G随机接入配置表会有四个，分别为高频TDD、低频TDD、高频FDD、低频FDD。由于长序列与短序列各自的特性不同，在低频的使用场景中，需要根据使用的随机接入序列对长序列的限制集或短序列的子载波间隔进行指示。
根据上面的分析可知，在系统消息中分别指示长序列的限制集与短序列的子载波间隔总共需要3个bit。然而，当长序列需要对限制集进行指示时，短序列不需要限制集的指示；当短序列需要对子载波间隔进行指示时，长序列不需要子载波间隔的指示。对长序列而言，子载波间隔的指示是多余的，那么这1bit的指示开销就是一种浪费；同理，对短序列而言，限制集的指示也是多余的，这2bit的指示也是浪费。
针对相关技术中存在的不必要的指示开销的问题，目前尚未提出有效的解决方案。
发明内容
本公开实施例提供了一种随机接入方法、装置、存储介质及电子设备。
根据本公开的一个实施例，提供了一种随机接入方法，包括：接收来自基站的指示信息，其中，所述指示信息中携带所述基站指示的随机接入 配置索引以及序列的配置信息；根据所述指示信息进行随机接入。
根据本公开的另一个实施例，提供了一种随机接入方法，包括：确定用于终端进行随机接入的指示信息，其中，所述指示信息携带随机接入配置索引以及序列的配置信息；将所述指示信息发送给所述终端。
根据本公开的另一个实施例，提供了一种随机接入装置，包括：接收模块，配置为接收来自基站的指示信息，其中，所述指示信息中携带所述基站指示的随机接入配置索引以及序列的配置信息；接入模块，配置为根据所述指示信息进行随机接入。
根据本公开的另一个实施例，提供了一种随机接入装置，包括：确定模块，配置为确定用于终端进行随机接入的指示信息，其中，所述指示信息携带随机接入配置索引以及序列的配置信息；发送模块，配置为将所述指示信息发送给所述终端。
根据本公开的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本公开的又一个实施例，还提供了一种电子设备，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本公开实施例，由于终端接收来自基站的指示信息中携带的是所述基站指示的随机接入配置索引以及序列的配置信息，根据所述指示信息进行随机接入，其中，可以根据随机接入配置索引来确定当前基站所指示的序列是长序列还是短序列，从而无需利用配置信息来指示序列的类型，降低了配置信息的比特数，并且，由于随机接入配置索引是现有的指示信息中携带的内容，从而实现了降低指示信息的整体的比特数，因此，可以解决现有技术中存在的不必要的指示开销的问题，减少了系统消息中不必要的指示开销，进而达到了消除浪费的有益效果。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一 部分，本公开的示意性实施例及其说明用于解释本公开。在附图中：
图1是根据本公开实施例的一种随机接入方法的移动终端的硬件结构框图；
图2是根据本公开实施例的一种随机接入方法的流程图；
图3是根据本公开实施例的一种指示信息发送方法的流程图；
图4是根据本公开实施例的一种随机接入装置的结构框图；
图5是根据本公开实施例的一种指示信息发送装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
首先，需要说明的是，不同的前导序列长度与子载波间隔应用于不同的使用场景。
由于长序列的子载波间隔为1.25KHz和5KHz，所以在高速场景中，例如120km/h以上场景中，会受到多普勒频偏的影响较大，对系统性能会造成严重影响。所以在使用长序列的随机接入中，需要增加限制集来应对高速场景下的多普勒频偏，另外长序列不需要单独指示子载波间隔，因为长序列的随机接入格式指示中包含了子载波间隔信息。相比于长序列，短序列中最小的子载波间隔为15KHz，在高速的场景下，例如120km/h以上场景中，受到的多普勒频偏影响较小，所以在短序列的前导序列生成的时候，不需要使用限制集对抗多普勒频偏。所以，长序列的情况不会用于高频场景，所以只有在低频TDD与低频FDD的随机接入配置表中同时存在长序列与短序列。
下面结合实施例对本公开进行说明：
实施例1
本申请实施例一所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例，图1是本公开实施例的一种随机接入方法的移动终端的硬件结构框图。如图1所示，移动终端10可以包括一个或多个(图1中仅示出一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和配置为存储数据的存储器104，可选地，上述移动终端还可以包括配置为通信功能的传输设备106以及输入输出设备108。本领域普通技术人员可以理解，图1所示的结构仅为示意，其并不对上述移动终端的结构造成限定。例如，移动终端10还可包括比图1中所示更多或者更少的组件，或者具有与图1所示不同的配置。
存储器104可配置为存储计算机程序，例如，应用软件的软件程序以及模块，如本公开实施例中的一种随机接入方法对应的计算机程序，处理器102通过运行存储在存储器104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述的方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至移动终端10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106配置为经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端10的通信供应商提供的无线网络。在一个实例中，传输装置106包括一个网络适配器(Network Interface Controller，简称为NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置106可以为射频(Radio Frequency，简称为RF)模块，其配置为通过无线方式与互联网进行通讯。
为使本公开的目的、技术方案和优点更加清楚，以下对本公开作进一步地详细说明。
实施例2
图2是根据本公开实施例的一种随机接入方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，接收来自基站的指示信息，其中，指示信息中携带基站指示的随机接入配置索引以及序列的配置信息；
步骤S204，根据指示信息进行随机接入。
其中，执行上述操作的可以是终端，例如，可以是实施例1中所示的终端。
通过上述步骤，由于终端接收来自基站的指示信息中携带的是基站指示的随机接入配置索引以及序列的配置信息，根据指示信息进行随机接入，其中，可以根据随机接入配置索引来确定当前基站所指示的序列是长序列还是短序列，从而无需利用配置信息来指示序列的类型，降低了配置信息的比特数，并且，由于随机接入配置索引是现有的指示信息中携带的内容，从而实现了降低指示信息的整体的比特数，因此，可以解决相关技术中存在的不必要的指示开销的问题，减少了系统消息中不必要的指示开销，进而达到了消除比特浪费的有益效果。
在一个可选的实施例中，当随机接入配置索引所指示的序列为长序列时，配置信息为长序列的限制集信息；当随机接入配置索引所指示的序列为短序列时，配置信息为短序列的子载波间隔信息。
在一个可选的实施例中，上述随机接入配置索引用于指示上述序列的类型信息。在本实施例中，终端可以利用随机接入配置索引来指示序列的类型，即，指示该序列为长序列还是短序列，也就是说，在本实施例中，无需在用于指示序列的配置信息中指示该序列的类型，而是利用随机接入配置索引来指示该序列的类型，从而在一定程度上降低了配置信息的指示开销，进而实现了降低指示信息的指示开销。
在一个可选的实施例中，在根据上述指示信息进行随机接入之前，该方法还包括：根据随机接入配置索引和序列的类型的对应关系确定随机接入配置索引所指示的上述序列的类型，其中，随机接入配置索引和序列的类型的对应关系是预定义的。在本实施例中，随机接入配置索引和序列的类型的对应关系是由基站预先配置好的，基站可以根据实际传输需求灵活 设置该对应关系，因此，该对应关系是基站和终端都清楚的。例如，可以利用配置表(可以采用相关技术中的5G随机接入配置表，该配置表中由256个索引)中的部分索引对应长序列(例如，使索引0-63指示长序列)，部分索引对应短序列(例如，使索引64-255指示短序列)。
在一个可选的实施例中，上述配置信息为限制集信息或子载波间隔信息。也就是说，配置信息为限制集信息、子载波间隔信息中的一种，即，配置信息仅指示一种信息。
当随机接入配置索引仅指示长序列时，配置信息仅为限制集信息；当随机接入配置索引仅指示短序列时，配置信息仅为子载波间隔信息，在本实施例中，随机接入配置索引仅指示一种类型的序列，即，仅指示长序列或者仅指示短序列，不能同时指示长序列和短序列，在该情况下，配置信息就只能是对应的限制集信息或者只能是子载波间隔信息，也就是说，限制集信息和子载波间隔信息不可同时配置。在本实施例中，终端接收的指示信息中的配置信息的大小可以是两个比特(由于在该配置信息中无需指示序列的类型，所以，可以采用两个比特来指示限制集或子载波间隔)，也就是说，缩减了现有技术中在系统消息中指示长序列的限制集或短序列的子载波间隔的三个比特中的一个比特，只保留两个比特。
在一个可选的实施例中，当上述配置信息为限制集信息时，配置信息中的2bit用于指示上述序列的限制集，例如：00表示无限制，01表示限制集A，10表示限制集B。
在一个可选的实施例中，当上述配置信息为子载波间隔信息时，配置信息中的1bit用于指示上述序列的子载波间隔。高频低频会在终端接入网络时自然进行区分，所以只需要1个比特就可以对短序列的子载波间隔进行指示。
实施例3
图3是根据本公开实施例的一种随机接入方法的流程图，也可以理解为是一种指示信息发送方法，如图3所示，该流程包括如下步骤：
步骤S302，确定用于终端进行随机接入的指示信息，其中，上述指示信息携带随机接入配置索引以及序列的配置信息；
步骤S304，将上述指示信息发送给终端。
其中，执行上述操作的可以是基站(或者是网络侧的其他网元)。
通过上述步骤，由于基站的指示信息中携带的是基站指示的随机接入配置索引以及序列的配置信息，根据指示信息进行随机接入，可以根据随机接入配置索引来确定当前基站所指示的序列是长序列还是短序列，从而无需利用配置信息来指示序列的类型，降低了配置信息的比特数，并且，由于随机接入配置索引是现有的指示信息中携带的内容，从而实现了降低指示信息的整体的比特数，因此，可以解决现有技术中存在的不必要的指示开销的问题，减少了系统消息中不必要的指示开销，进而达到了消除比特浪费的有益效果。
在一个可选的实施例中，当随机接入配置索引所指示的序列为长序列时，配置信息为长序列的限制集信息；当随机接入配置索引所指示的序列为短序列时，配置信息为短序列的子载波间隔信息。
在一个可选的实施例中，随机接入配置索引用于指示序列的类型信息。在本实施例中，基站侧可以利用随机接入配置索引来指示序列的类型，即，指示该序列为长序列还是短序列。也就是说，无需在配置信息中指示预定序列的类型，而是利用随机接入配置索引来指示预定序列的类型，从而在一定程度上降低了配置信息的指示开销。
在一个可选的实施例中，在确定用于终端进行随机接入的指示信息之前，该方法还包括：预定义随机接入配置索引和序列的类型的对应关系。在本实施例中，随机接入配置索引和序列的类型的对应关系是由基站预先配置好的，基站可以根据实际传输需求灵活设置该对应关系，该对应关系是基站和终端都清楚的。例如，可以利用配置表(可以采用相关技术中的5G随机接入配置表，该配置表中由256个索引)中的部分索引对应长序列(例如，使索引0-63指示长序列)，部分索引对应短序列(例如，使索引64-255指示短序列)。
在一个可选的实施例中，上述配置信息为限制集信息或子载波间隔信 息。也就是说，配置信息为限制集信息、子载波间隔信息中的一种，即，配置信息仅指示一种信息。
当所述随机接入配置索引仅指示长序列时，所述配置信息仅为限制集信息；当所述随机接入配置索引仅指示短序列时，所述配置信息仅为子载波间隔信息。在本实施例中，随机接入配置索引仅指示一种类型的序列，即，仅指示长序列或者仅指示短序列，不能同时指示长序列和短序列，在该情况下，配置信息就只能是对应的限制集信息或者只能是子载波间隔信息，也就是说，限制集信息和子载波间隔信息不可同时配置。在本实施例中，基站发送给终端的指示信息中的配置信息大小可以是两个比特(由于在该配置信息中无需指示序列的类型，所以，可以采用两个比特来指示限制集或子载波间隔)，也就是说，缩减了现有技术中在系统消息中指示长序列的限制集或短序列的子载波间隔的三个比特中的一个比特，只保留两个比特。
在一个可选的实施例中，当上述配置信息为限制集信息时，配置信息中的2bit用于指示上述序列的限制集，例如：00表示无限制，01表示限制集A，10表示限制集B。
在一个可选的实施例中，当配置信息为子载波间隔信息时，配置信息中的1bit用于指示上述序列的子载波间隔。
下面结合一具体实施例对本公开上述方法做详细介绍。
本公开实施例采用的解决方案是采用随机接入配置索引与2个bit共同指示长序列的限制集与短序列的子载波间隔，也就是说删掉在系统消息(对应于上述的指示信息)中分别指示长序列的限制集与短序列的子载波间隔的三个比特中的一个比特，只保留两个比特。具体方法如下，根据标准会议的agreement可知，5G随机接入配置表总共有256个配置索引，用0-255表示。那么在配置表低频TDD与低频FDD中，假设配置索引0-63指示长序列，其余配置索引指示短序列。具体指示长序列或短序列的配置索引，基站(或网络侧)可以根据实际传输需求进行灵活设置。当配置索引为0-63时，表示此时指示的是长序列，那么2个bit都用来指示长序列的限制集， 例如：00表示无限制，01表示限制集A，10表示限制集B。当配置索引为64-255时，表示此时指示的是短序列，此时在低频通信场景中，短序列使用了两种子载波间隔为15KHz和30KHz，那么限制集指示的2个bit其中的一个比特用来指示短序列的子载波间隔。
从终端角度上看，终端接收系统消息中指示的随机接入配置索引与含有限制集指示或子载波间隔指示的2个bit。首先根据随机接入配置索引判断是长序列还是短序列，如果是长序列，则这2个bit均用于长序列的限制集指示，如果是短序列，则这2个比特中的某一个bit用于指示短序列的子载波间隔。从标准化角度上说，基站配置随机接入系统消息以及终端接收随机接入系统消息，如果需要有效节省信令开销，则必然存在这两个支路的选择过程，是回避不开的行为。
通过上述具体实施例，可以减少随机接入中信息指示比特开销，规避了系统信息指示中的比特浪费。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如只读存储器(Read-Only Memory，简称为ROM)/随机存取存储器(Random Access Memory，简称为RAM)、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
实施例4
在本实施例中还提供了一种随机接入装置，上述装置配置为实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图4是根据本公开实施例的一种随机接入装置的结构框图，该装置可以设置在执行图2所示方法的电子设备(比如终端)上，如图4所示，该装置包括：接收模块42，配置为接收来自基站的指示信息，其中，指示信息中携带基站指示的随机接入配置索引以及序列的配置信息；接入模块44，连接至上述接收模块42，配置为根据指示信息进行随机接入。
可选地，当随机接入配置索引所指示的序列为长序列时，配置信息为长序列的限制集信息；当随机接入配置索引所指示的序列为短序列时，配置信息为短序列的子载波间隔信息。
可选地，上述随机接入配置索引用于指示序列的类型信息。
可选地，在根据上述指示信息进行随机接入之前，所述接入模块44，还配置为根据随机接入配置索引和序列的类型的对应关系确定随机接入配置索引所指示的序列的类型，其中，随机接入配置索引和序列的类型的对应关系是预定义的。
可选地，上述配置信息为限制集信息或子载波间隔信息。
可选地，当上述配置信息为限制集信息时，配置信息中的2bit用于指示上述序列的限制集。
可选地，当配置信息为子载波间隔信息时，配置信息中的1bit用于指示上述序列的子载波间隔。
实施例5
图5是根据本公开实施例的一种随机接入装置的结构框图，该装置设置在执行图3所示方法的电子设备(比如基站等)上，如图5所示，该装置包括：确定模块52，配置为确定用于终端进行随机接入的指示信息，其中，指示信息携带随机接入配置索引以及序列的配置信息；发送模块54，连接至上述确定模块52，配置为将指示信息发送给终端。
可选地，当随机接入配置索引所指示的序列为长序列时，配置信息为长序列的限制集信息；当随机接入配置索引所指示的序列为短序列时，配置信息为短序列的子载波间隔信息。
可选地，上述随机接入配置索引用于指示序列的类型信息。
可选地，在确定用于终端进行随机接入的指示信息之前，该确定模块52，还配置为预定义随机接入配置索引和序列的类型的对应关系。
可选地，上述配置信息为限制集信息或子载波间隔信息。
可选地，当上述配置信息为限制集信息时，配置信息中的2bit用于指示上述序列的限制集。
可选地，当配置信息为子载波间隔信息时，配置信息中的1bit用于指示上述序列的子载波间隔。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、ROM、RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子设备，具体可以为终端或基站，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子设备还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模 块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围内。

Claims (18)

  1. 一种随机接入方法，包括：
    接收来自基站的指示信息，其中，所述指示信息中携带所述基站指示的随机接入配置索引以及序列的配置信息；
    根据所述指示信息进行随机接入。
  2. 根据权利要求1所述的方法，其中，当所述随机接入配置索引所指示的序列为长序列时，所述配置信息为所述长序列的限制集信息；当所述随机接入配置索引所指示的序列为短序列时，所述配置信息为所述短序列的子载波间隔信息。
  3. 根据权利要求1所述的方法，其中，所述随机接入配置索引用于指示所述序列的类型信息。
  4. 根据权利要求3所述的方法，其中，在根据所述指示信息进行随机接入之前，所述方法还包括：
    根据随机接入配置索引和序列的类型的对应关系确定所述随机接入配置索引所指示的所述序列的类型，其中，所述随机接入配置索引和序列的类型的对应关系是预定义的。
  5. 根据权利要求1所述的方法，其中，所述配置信息为限制集信息或子载波间隔信息。
  6. 根据权利要求5所述的方法，其中，当所述配置信息为所述限制集信息时，所述配置信息中的2bit用于指示所述序列的限制集。
  7. 根据权利要求5所述的方法，其中，当所述配置信息为所述子载波间隔信息时，所述配置信息中的1bit用于指示所述序列的子载波间隔。
  8. 一种随机接入方法，包括：
    确定用于终端进行随机接入的指示信息，其中，所述指示信息携带随机接入配置索引以及序列的配置信息；
    将所述指示信息发送给所述终端。
  9. 根据权利要求8所述的方法，其中，当所述随机接入配置索引所指示的序列为长序列时，所述配置信息为所述长序列的限制集信息；当所述随机接入配置索引所指示的序列为短序列时，所述配置信息为所述短序列的子载波间隔信息。
  10. 根据权利要求8所述的方法，其中，所述随机接入配置索引用于指示所述序列的类型信息。
  11. 根据权利要求10所述的方法，其中，在确定用于终端进行随机接入的指示信息之前，所述方法还包括：
    预定义随机接入配置索引和序列的类型的对应关系。
  12. 根据权利要求8所述的方法，其中，所述配置信息为限制集信息或子载波间隔信息。
  13. 根据权利要求12所述的方法，其中，当所述配置信息为所述限制集信息时，所述配置信息中的2bit用于指示所述序列的限制集。
  14. 根据权利要求12所述的方法，其中，当所述配置信息为所述子载波间隔信息时，所述配置信息中的1bit用于指示所述序列的子载波间隔。
  15. 一种随机接入装置，包括：
    接收模块，配置为接收来自基站的指示信息，其中，所述指示信息中携带所述基站指示的随机接入配置索引以及序列的配置信息；
    接入模块，配置为根据所述指示信息进行随机接入。
  16. 一种随机接入装置，包括：
    确定模块，配置为确定用于终端进行随机接入的指示信息，其中，所述指示信息携带随机接入配置索引以及序列的配置信息；
    发送模块，配置为将所述指示信息发送给所述终端。
  17. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至7任一项中所述的方法，或者执行权利要求8至14任一项中所述的方法。
  18. 一种电子设备，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至7任一项中所述的方法，或者执行权利要求8至14任一项中所述的方法。
PCT/CN2018/114917 2018-01-12 2018-11-09 随机接入方法、装置、存储介质及电子设备 WO2019137087A1 (zh)

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