CN110035557B - Random access method, device, storage medium and electronic equipment - Google Patents
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Abstract
The invention provides a random access method, a random access device, a storage medium and electronic equipment, wherein the method comprises the following steps: receiving indication information from a base station, wherein the indication information carries a random access configuration index indicated by the base station and configuration information of a sequence; and carrying out random access according to the indication information. The invention solves the problem of unnecessary indication overhead in the prior art, reduces the unnecessary indication overhead in the system message and further achieves the beneficial effect of eliminating bit waste.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a random access method, apparatus, storage medium, and electronic device.
Background
With the development of wireless communication technology and the increasing demand of users for communication, fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology has become a trend of future network development in order to meet higher, faster and more recent communication needs.
Compared with the traditional Long Term Evolution (LTE) technology, the 5G technology is improved accordingly in many aspects. In random access, 5G adds a preamble sequence of length 139 or 127, except that the same preamble sequence of length 839 as LTE is used. Leader sequences of length 839 may be referred to as long sequences and leader sequences of length 139 or 127 may be referred to as short sequences. Except that the length of the leader sequence is changed, the subcarrier interval of the leader sequence is also changed, and the subcarrier interval of the long sequence is changed into 1.25KHz and 5 KHz; the subcarrier spacing of the newly added short sequence is 15KHz, 30KHz, 60KHz and 120 KHz.
In the prior art, the restriction set can be divided into three cases, no restriction (when the long sequence is used in a low-speed scene, no restriction indication is needed), a restriction set a and a restriction set B, according to the usage scenario of the long sequence. The presence of the restricted set affects the length of the cyclic shift in the preamble sequence and thus the generation of the long sequence, so the restricted set of the long sequence needs to be indicated in the random access configuration. Since there are three cases for the restriction set, 2 bits are required for indication. Among the four long-sequence random access formats that have been determined, format 0, format 1, format 2, and format3 may be used, where the subcarrier spacing in the first three long-sequence random access formats is 1.25KHz, and the subcarrier spacing in format3 is 5 KHz.
The short sequence is added into 5G to support new use scenarios and new proposed performance requirements. Such as high frequency communications, where the carrier frequency is typically above 6GHz, and low frequency communications in a small range. The short sequence uses four subcarrier spacings, 15KHz, 30KHz for a low frequency communication scenario, 60KHz, 120KHz for a high frequency communication scenario. The determined random access formats of the short sequence are divided into a1, B1, a1/B1, a2, a2/B2, A3, A3/B3, B4, C0, C2 and the like, and all the random access formats can be used for the four sub-carrier intervals, so that the preamble sequence format of the short sequence cannot indicate the sub-carrier intervals, and therefore at least 1bit is required for indication.
Like LTE, the format and time and frequency parameters used by the corresponding random access are also provided in 5G through a random access configuration table. According to the agreement policy that has been reached in the standard conference, there are four 5G random access configuration tables, which are high frequency TDD, low frequency TDD, high frequency FDD, and low frequency FDD. Since the long sequence and the short sequence have different characteristics, in a low-frequency usage scenario, it is necessary to indicate a restricted set of the long sequence or a subcarrier interval of the short sequence according to the random access sequence used.
As can be seen from the above analysis, the restricted set indicating the long sequence and the subcarrier spacing of the short sequence in the system message, respectively, require a total of 3 bits. However, when a long sequence needs to indicate a restricted set, a short sequence does not need an indication of a restricted set; when the short sequence needs to indicate the subcarrier spacing, the long sequence does not need the indication of the subcarrier spacing. For long sequences, the indication of subcarrier spacing is redundant, and the 1-bit indication overhead is a waste; similarly, for short sequences, the indication of the restricted set is redundant, and the 2-bit indication is also wasted.
Aiming at the problem of unnecessary indication overhead in the prior art, no effective solution is provided at present.
Disclosure of Invention
The embodiment of the invention provides a random access method, a random access device, a storage medium and electronic equipment, which are used for at least solving the problem of unnecessary indication overhead in the related art.
According to an embodiment of the present invention, there is provided a random access method including: receiving indication information from a base station, wherein the indication information carries a random access configuration index indicated by the base station and configuration information of a sequence; and carrying out random access according to the indication information.
Optionally, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier spacing information of the short sequence.
Optionally, the random access configuration index is used to indicate type information of the sequence.
Optionally, before performing random access according to the indication information, the method further includes: determining the type of the sequence indicated by the random access configuration index according to the corresponding relation between the random access configuration index and the type of the sequence, wherein the corresponding relation between the random access configuration index and the type of the sequence is predefined.
Optionally, the configuration information is constraint set information or subcarrier spacing information.
Optionally, when the configuration information is the constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence.
Optionally, when the configuration information is the subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
According to another embodiment of the present invention, there is provided a random access method including: determining indication information for a terminal to perform random access, wherein the indication information carries a random access configuration index and configuration information of a sequence; and sending the indication information to the terminal.
Optionally, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier interval information of the short sequence.
Optionally, the random access configuration index is used to indicate type information of the sequence.
Optionally, before determining the indication information for the terminal to perform random access, the method further includes: and predefining the corresponding relation between the random access configuration index and the type of the sequence.
Optionally, the configuration information is constraint set information or subcarrier spacing information.
Optionally, when the configuration information is the constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence.
Optionally, when the configuration information is the subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
According to another embodiment of the present invention, there is provided 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 configuration information of a sequence; and the access module is used for carrying out random access according to the indication information.
According to another embodiment of the present invention, there is provided 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 configuration information of a sequence; and the sending module is used for sending the indication information to the terminal.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
According to the invention, the terminal receives the random access configuration index and the sequence configuration information indicated by the base station, which are carried in the indication information from the base station, and performs random access according to the indication information, wherein the sequence indicated by the current base station can be determined to be a long sequence or a short sequence according to the random access configuration index, so that the type of the sequence is not required to be indicated by the configuration information, and the bit number of the configuration information is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware structure of a mobile terminal of a random access method according to an embodiment of the present invention;
fig. 2 is a flow chart of a random access method according to an embodiment of the present invention;
fig. 3 is a flowchart of an indication information transmitting method according to an embodiment of the present invention;
fig. 4 is a block diagram of a random access apparatus according to an embodiment of the present invention;
fig. 5 is a block diagram of an indication information transmitting apparatus according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
First, it should be noted that different preamble sequence lengths and subcarrier spacings are applied to different usage scenarios.
Because the interval of the sub-carriers of the long sequence is 1.25KHz and 5KHz, the influence of Doppler frequency offset is large in a high-speed scene, such as a scene above 120km/h, and the system performance is seriously influenced. Therefore, in the random access using the long sequence, a restriction set needs to be added to cope with the doppler frequency offset in a high-speed scene, and the long sequence does not need to separately indicate the subcarrier spacing because the random access format indication of the long sequence includes subcarrier spacing information. Compared with a long sequence, the minimum subcarrier interval in the short sequence is 15KHz, and the influence of Doppler frequency offset on the short sequence is small in a high-speed scene, such as a scene above 120km/h, so that a limit set is not required to be used for resisting the Doppler frequency offset when the preamble sequence of the short sequence is generated. Therefore, the long sequence case is not used in the high frequency scenario, so that the long sequence and the short sequence exist in the random access configuration tables of the low frequency TDD and the low frequency FDD at the same time.
The invention is illustrated below with reference to examples:
example 1
The method provided by the first embodiment of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking the operation on the mobile terminal as an example, fig. 1 is a hardware structure block diagram of the mobile terminal of a random access method according to an embodiment of the present invention. As shown in fig. 1, the mobile terminal 10 may include one or more (only one shown in fig. 1) processors 102 (the 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 for storing data, and optionally may also include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store a computer program, for example, a software program and a module of an application software, such as a computer program corresponding to a random access method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method described above. The 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. In some instances, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below.
Example 2
Fig. 2 is a flowchart of a random access method according to an embodiment of the present invention, and as shown in fig. 2, the flowchart includes the following steps:
step S202, receiving indication information from a base station, wherein the indication information carries a random access configuration index indicated by the base station and configuration information of a sequence;
and step S204, performing random access according to the indication information.
Here, the terminal that performs the above operation may be, for example, the terminal shown in embodiment 1.
Through the steps, the terminal receives the random access configuration index indicated by the base station and the configuration information of the sequence carried in the indication information from the base station, and performs random access according to the indication information, wherein whether the sequence indicated by the current base station is a long sequence or a short sequence can be determined according to the random access configuration index, so that the type of the sequence is not required to be indicated by the configuration information, the bit number of the configuration information is reduced, and the random access configuration index is the content carried in the existing indication information, so that the whole bit number of the indication information is reduced, therefore, the problem of unnecessary indication overhead in the prior art can be solved, the unnecessary indication overhead in the system message is reduced, and the beneficial effect of eliminating bit waste is achieved.
In an optional embodiment, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restriction set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier interval information of the short sequence.
In an optional embodiment, the random access configuration index is used to indicate type information of the sequence. In this embodiment, the terminal may indicate the type of the sequence by using the random access configuration index, that is, indicate whether the sequence is a long sequence or a short sequence, that is, in this embodiment, the type of the sequence is not required to be indicated in the configuration information for indicating the sequence, but the type of the sequence is indicated by using the random access configuration index, so that the indication overhead of the configuration information is reduced to some extent, and the reduction of the indication overhead of the indication information is achieved.
In an optional embodiment, before performing random access according to the indication information, the method further includes: and determining the type of the sequence indicated by the random access configuration index according to the corresponding relation between the random access configuration index and the type of the sequence, wherein the corresponding relation between the random access configuration index and the type of the sequence is predefined. In this embodiment, the corresponding relationship 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 corresponding relationship according to the actual transmission requirement, so that the corresponding relationship is clear for both the base station and the terminal. For example, a configuration table (a 5G random access configuration table in the prior art may be adopted, in which 256 indexes are used) may be utilized, in which a part of indexes correspond to a long sequence (for example, indexes 0 to 63 indicate a long sequence) and a part of indexes correspond to a short sequence (for example, indexes 64 to 255 indicate a short sequence).
In an optional embodiment, the configuration information is constraint set information or subcarrier spacing information. That is, the configuration information is one of the restriction set information and the subcarrier spacing information, that is, the configuration information indicates only one kind of information.
When the random access configuration index only indicates a long sequence, the configuration information is only the restricted set information; in this embodiment, the random access configuration index indicates only one type of sequence, that is, only a long sequence or only a short sequence, and cannot indicate both the long sequence and the short sequence, in which case the configuration information may only be corresponding restricted set information or only subcarrier spacing information, that is, the restricted set information and the subcarrier spacing information may not be configured at the same time. In this embodiment, the size of the configuration information in the indication information received by the terminal may be two bits (since the type of the sequence does not need 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 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, and only two bits are reserved.
In an optional embodiment, when the configuration information is constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence, for example: 00 denotes an unlimited set, 01 denotes a limited set a, and 10 denotes a limited set B.
In an optional embodiment, when the configuration information is subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence. The high frequency and the low frequency can be naturally distinguished when the terminal accesses the network, so that the subcarrier interval of the short sequence can be indicated by only 1 bit.
Example 3
Fig. 3 is a flowchart of an indication information sending method according to an embodiment of the present invention, and as shown in fig. 3, the flowchart includes the following steps:
step S302, determining indication information for the terminal to perform random access, wherein the indication information carries a random access configuration index and configuration information of a sequence;
and step S304, transmitting the indication information to the terminal.
The base station (or other network element on the network side) may perform the above operations.
Through the steps, because the indication information of the base station carries the random access configuration index indicated by the base station and the configuration information of the sequence, and the random access is carried out according to the indication information, whether the sequence indicated by the current base station is a long sequence or a short sequence can be determined according to the random access configuration index, so that the type of the sequence is not required to be indicated by the configuration information, the bit number of the configuration information is reduced, and because the random access configuration index is the content carried in the existing indication information, the whole bit number of the indication information is reduced, therefore, the problem of unnecessary indication overhead in the prior art can be solved, the unnecessary indication overhead in the system information is reduced, and the beneficial effect of eliminating bit waste is achieved.
In an optional embodiment, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restriction set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier interval information of the short sequence.
In an alternative embodiment, the random access configuration index is used to indicate type information of the sequence. In this embodiment, the base station side may indicate the type of the sequence, i.e., whether the sequence is a long sequence or a short sequence, by using the random access configuration index. That is, the type of the predetermined sequence does not need to be indicated in the configuration information, but is indicated by the random access configuration index, thereby reducing the indication overhead of the configuration information to some extent.
In an optional embodiment, before determining the indication information for the terminal to perform random access, the method further includes: and predefining the corresponding relation between the random access configuration index and the type of the sequence. In this embodiment, the corresponding relationship 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 corresponding relationship according to the actual transmission requirement, where the corresponding relationship is clear for both the base station and the terminal. For example, a configuration table (a 5G random access configuration table in the prior art may be adopted, in which 256 indexes are used) may be utilized, in which a part of indexes correspond to a long sequence (for example, indexes 0 to 63 indicate a long sequence) and a part of indexes correspond to a short sequence (for example, indexes 64 to 255 indicate a short sequence).
In an optional embodiment, the configuration information is constraint set information or subcarrier spacing information. That is, the configuration information is one of the restriction set information and the subcarrier spacing information, that is, the configuration information indicates only one kind of information.
When the random access configuration index only indicates a long sequence, the configuration information is only restricted set information; when the random access configuration index only indicates a short sequence, the configuration information is only subcarrier spacing information. In this embodiment, the random access configuration index indicates only one type of sequence, that is, only a long sequence or only a short sequence, and cannot indicate both the long sequence and the short sequence, in this case, the configuration information may only be corresponding restricted set information or only subcarrier spacing information, that is, the restricted set information and the subcarrier spacing information may not be configured at the same time. In this embodiment, the size of the configuration information in the indication information sent by the base station to the terminal may be two bits (since the type of the sequence does not need 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 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, and only two bits are reserved.
In an optional embodiment, when the configuration information is constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence, for example: 00 denotes an unlimited set, 01 denotes a limited set a, and 10 denotes a limited set B.
In an optional embodiment, when the configuration information is subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
The above-described method of the present invention is described in detail below with reference to a specific embodiment.
The solution adopted by the embodiment of the present invention is to use the random access configuration index and 2 bits to jointly indicate the subcarrier spacing between the long sequence and the short sequence, that is, one bit of three bits respectively indicating the subcarrier spacing between the long sequence and the short sequence in the system message (corresponding to the above-mentioned indication information) is deleted, and only two bits are reserved. The specific method is as follows, according to the element of the standard conference, the 5G random access configuration table has 256 configuration indexes in total, which are represented by 0-255. Then in configuration tables low frequency TDD and low frequency FDD, we assume that configuration indices 0-63 indicate long sequences and the remaining configuration indices indicate short sequences. Specifically, 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 the actual transmission requirement. When the configuration index is 0-63, indicating that a long sequence is indicated at this time, then 2 bits are used to indicate a restricted set of long sequences, for example: 00 denotes an unlimited set, 01 denotes a limited set a, and 10 denotes a limited set B. When the configuration index is 64-255, it indicates that a short sequence is indicated at this time, and in a low-frequency communication scenario, the short sequence uses two sub-carrier intervals of 15KHz and 30KHz, one bit of the 2 bits indicated by the restriction set is used to indicate the sub-carrier interval of the short sequence.
From the terminal perspective, the terminal receives the random access configuration index indicated in the system message and 2 bits containing the restriction set indication or the subcarrier spacing indication. Firstly, judging whether the sequence is a long sequence or a short sequence according to a random access configuration index, if the sequence is the long sequence, all the 2 bits are used for indicating a restriction set of the long sequence, and if the sequence is the short sequence, one bit of the 2 bits is used for indicating a subcarrier interval of the short sequence. From the standardization perspective, the base station configures the random access system message and the terminal receives the random access system message, and if the signaling overhead needs to be effectively saved, the selection process of the two branches is inevitably existed, which is a behavior that can not be avoided.
Through the specific embodiment, the bit overhead of information indication in random access can be reduced, and the bit waste in system information indication is avoided.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method according to the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 4
In this embodiment, a random access apparatus and an indication information sending apparatus are also provided, where the apparatuses are used to implement the foregoing embodiments and preferred embodiments, and are not described again after being described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of a random access apparatus according to an embodiment of the present invention, and as shown in fig. 4, the apparatus includes: a receiving module 42, 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 configuration information of a sequence; and an access module 44, connected to the receiving module 42, for performing random access according to the indication information.
Optionally, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restriction set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier interval information of the short sequence.
Optionally, the random access configuration index is used to indicate type information of the sequence.
Optionally, before performing random access according to the indication information, the apparatus is further configured to determine a type of a sequence indicated by the random access configuration index according to a corresponding relationship between the random access configuration index and the type of the sequence, where the corresponding relationship between the random access configuration index and the type of the sequence is predefined.
Optionally, the configuration information is constraint set information or subcarrier spacing information.
Optionally, when the configuration information is constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence.
Optionally, when the configuration information is subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
Example 5
Fig. 5 is a block diagram of a random access apparatus according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes: a determining module 52, configured to determine indication information for a terminal to perform random access, where the indication information carries a random access configuration index and configuration information of a sequence; a sending module 54, connected to the determining module 52, for sending the indication information to the terminal.
Optionally, when the sequence indicated by the random access configuration index is a long sequence, the configuration information is restriction set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier interval information of the short sequence.
Optionally, the random access configuration index is used to indicate type information of the sequence.
Optionally, before determining the indication information for the terminal to perform random access, the apparatus is further configured to predefine a correspondence between the random access configuration index and a type of the sequence.
Optionally, the configuration information is constraint set information or subcarrier spacing information.
Optionally, when the configuration information is constraint set information, 2 bits in the configuration information are used to indicate a constraint set of the sequence.
Optionally, when the configuration information is subcarrier spacing information, 1bit in the configuration information is used to indicate the subcarrier spacing of the sequence.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A random access method, comprising:
receiving indication information from a base station, wherein the indication information carries a random access configuration index indicated by the base station and configuration information of a sequence;
performing random access according to the indication information;
when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier spacing information of the short sequence.
2. The method of claim 1, wherein the random access configuration index is used to indicate type information of the sequence.
3. The method of claim 2, wherein before performing random access according to the indication information, the method further comprises:
determining the type of the sequence indicated by the random access configuration index according to the corresponding relation between the random access configuration index and the type of the sequence, wherein the corresponding relation between the random access configuration index and the type of the sequence is predefined.
4. The method of claim 1, wherein the configuration information is restriction set information or subcarrier spacing information.
5. The method of claim 4, wherein when the configuration information is the constraint set information, 2 bits of the configuration information are used for indicating a constraint set of the sequence.
6. The method of claim 4, wherein when the configuration information is the subcarrier spacing information, 1bit in the configuration information is used for indicating the subcarrier spacing of the sequence.
7. A random access method, comprising:
determining indication information for a terminal to perform random access, wherein the indication information carries a random access configuration index and configuration information of a sequence;
sending the indication information to the terminal;
when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier spacing information of the short sequence.
8. The method of claim 7, wherein the random access configuration index is used to indicate type information of the sequence.
9. The method of claim 8, wherein before determining the indication information for the terminal to perform random access, the method further comprises:
and predefining the corresponding relation between the random access configuration index and the type of the sequence.
10. The method of any of claim 7, wherein the configuration information is restriction set information or subcarrier spacing information.
11. The method of claim 10, wherein when the configuration information is the constraint set information, 2 bits of the configuration information are used for indicating a constraint set of the sequence.
12. The method of claim 10, wherein when the configuration information is the subcarrier spacing information, 1bit in the configuration information is used for indicating the subcarrier spacing of the sequence.
13. A random access apparatus, comprising:
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 configuration information of a sequence;
the access module is used for carrying out random access according to the indication information;
when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier spacing information of the short sequence.
14. A random access apparatus, comprising:
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 configuration information of a sequence;
the sending module is used for sending the indication information to the terminal;
when the sequence indicated by the random access configuration index is a long sequence, the configuration information is the restricted set information of the long sequence; and when the sequence indicated by the random access configuration index is a short sequence, the configuration information is the subcarrier spacing information of the short sequence.
15. A storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the method of any of claims 1 to 6 when executed, or to perform the method of any of claims 7 to 12.
16. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 6, or to perform the method of any of claims 7 to 12.
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| CN201810032511.XA CN110035557B (en) | 2018-01-12 | 2018-01-12 | Random access method, device, storage medium and electronic equipment |
| PCT/CN2018/114917 WO2019137087A1 (en) | 2018-01-12 | 2018-11-09 | Random access method and apparatus, storage medium, and electronic device |
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| CN201810032511.XA CN110035557B (en) | 2018-01-12 | 2018-01-12 | Random access method, device, storage medium and electronic equipment |
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| WO2017049639A1 (en) * | 2015-09-25 | 2017-03-30 | 华为技术有限公司 | Method, device and system for generating random access sequence |
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| EP3340504B1 (en) * | 2015-08-19 | 2020-09-09 | Fujitsu Limited | Apparatus for supporting multiple transmission time intervals, and communication system |
| CN106941730A (en) * | 2016-01-05 | 2017-07-11 | 中兴通讯股份有限公司 | The control method and device of Stochastic accessing |
| CN107197532B (en) * | 2016-03-15 | 2022-10-28 | 中兴通讯股份有限公司 | Access processing method and device |
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| CN102695276A (en) * | 2011-03-25 | 2012-09-26 | 北京新岸线无线技术有限公司 | Wireless communication method, system and equipment |
| WO2017049639A1 (en) * | 2015-09-25 | 2017-03-30 | 华为技术有限公司 | Method, device and system for generating random access sequence |
| CN107205281A (en) * | 2016-03-18 | 2017-09-26 | 中兴通讯股份有限公司 | The Notification Method and device of a kind of sending method of accidental access signal, resource |
| CN110061821A (en) * | 2018-01-11 | 2019-07-26 | 北京三星通信技术研究有限公司 | Random access leader sequence transmission power determines method, user equipment, base station and computer-readable medium |
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