CN110677916A - Configuration, transmission and detection method of random access information, terminal and base station - Google Patents
Configuration, transmission and detection method of random access information, terminal and base station Download PDFInfo
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- CN110677916A CN110677916A CN201810715893.6A CN201810715893A CN110677916A CN 110677916 A CN110677916 A CN 110677916A CN 201810715893 A CN201810715893 A CN 201810715893A CN 110677916 A CN110677916 A CN 110677916A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
The invention provides a method for configuring, transmitting and detecting random access information, a terminal and a base station, wherein the configuration method comprises the following steps: sending configuration information of a random access sequence to a terminal, wherein the configuration information comprises: and the corresponding relation between the random access sequence and the sending times. By the mode, the uplink and downlink ratio is less limited while the uplink access coverage is ensured, the user time delay is reduced, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, a terminal, and a base station for configuring, transmitting, and detecting random access information.
Background
In the New Radio (NR) standardization process of the Fifth generation mobile communication technology (5G), a long sequence Format with 4 repetitions is introduced into a sequence transmitted in a Physical Random Access Channel (PRACH), please refer to fig. 1, that is, a sequence with a Format of Format 2 in fig. 1 is uploaded to prevent link loss caused by a frequency band increase, thereby ensuring a coverage of uplink Access.
However, according to the existing standardization conclusion, uploading the Format 2 Format sequence needs to occupy 3.5ms of transmission time. Therefore, the base station needs to configure at least 3.5ms uplink transmission time. If the base station configures an uplink and downlink period of 5ms, the proportion of uplink transmission is too large. If the base station is configured with a 10ms period, it can only support an uplink to downlink ratio of about 4: 6. If the base station configures a longer period, the access delay of the terminal is too long. In addition, in order to configure the transmission of the sequence, the uplink transmission time is too large, which also affects other users to perform downlink transmission, resulting in too large time delay of the users and affecting the user experience of the users.
Therefore, how to reduce the limitation on the uplink and downlink matching and reduce the user delay while ensuring the uplink access coverage is a technical problem to be solved at present.
Disclosure of Invention
In view of this, the present invention provides a method, a terminal and a base station for configuring, transmitting and detecting random access information, which are used to solve the technical problems of reducing the limitation on the uplink and downlink ratio and reducing the user delay while ensuring the uplink access coverage.
To solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a method for configuring random access information, which is applied to a base station, and includes:
transmitting configuration information of a random access sequence, the configuration information including: and the corresponding relation between the random access sequence and the sending times.
Wherein, the corresponding relationship between the random access sequence and the sending times comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
In a second aspect, an embodiment of the present invention provides a method for transmitting random access information, where the method is applied to a terminal, and the method includes:
determining the sending times N of the random access sequence to be sent, wherein N is a positive integer greater than or equal to 1;
selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times;
and respectively transmitting the selected random access sequences on N RACH transmission opportunities.
Wherein, the corresponding relationship between the random access sequence and the sending times comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
Before the step of selecting one random access sequence in the random access sequence group corresponding to the N according to the corresponding relationship between the random access sequence and the number of transmission times, the method further includes:
receiving configuration information of the random access sequence sent by a base station, wherein the configuration information comprises: and the corresponding relation between the random access sequence and the sending times.
Wherein, the step of determining the number of transmission times N required to transmit the random access sequence comprises:
acquiring path loss between a terminal and a base station;
and determining the sending times N of the random access sequence to be sent according to the path loss.
Wherein transmission symbols occupied by the N RACH transmission opportunities do not overlap.
Wherein, before the step of transmitting the selected random access sequences on the N RACH transmission opportunities respectively, the method further includes:
receiving synchronous signal blocks sent by a base station and mapping relations between each synchronous signal block and a plurality of RACH transmission opportunities;
the step of transmitting the selected random access sequences on N RACH transmission opportunities respectively comprises:
and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
In a third aspect, an embodiment of the present invention further provides a method for detecting random access information, where the method is applied to a base station, and the method includes:
detecting a random access sequence sent by a terminal according to the corresponding relation between the random access sequence and the sending times;
for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
Before the step of determining the number of transmissions N of the random access sequence transmitted by the terminal according to the correspondence between the random access sequence and the number of transmissions, the method further includes:
and sending the synchronous signal blocks to the terminal, and mapping relation between each synchronous signal block and a plurality of RACH transmission opportunities.
In a fourth aspect, an embodiment of the present invention further provides a base station, including:
a transceiver for transmitting configuration information of a random access sequence, the configuration information including: and the corresponding relation between the random access sequence and the sending times.
Wherein, the corresponding relationship between the random access sequence and the sending times comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
In a fifth aspect, an embodiment of the present invention further provides a terminal, including:
the processor is used for determining the sending times N of the random access sequence needing to be sent, wherein the N is a positive integer greater than or equal to 1; selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times;
a transceiver for transmitting the selected random access sequences on the N RACH transmission opportunities, respectively.
Wherein, the corresponding relationship between the random access sequence and the sending times comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
The transceiver is configured to receive configuration information of the random access sequence sent by a base station, where the configuration information includes: and the corresponding relation between the random access sequence and the sending times.
The processor is configured to obtain a path loss between a terminal and a base station; and determining the sending times N of the random access sequence to be sent according to the path loss.
Wherein transmission symbols occupied by the N RACH transmission opportunities do not overlap.
The transceiver is used for receiving synchronous signal blocks sent by a base station and mapping relations between each synchronous signal block and a plurality of RACH transmission opportunities; and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
In a sixth aspect, an embodiment of the present invention further provides a base station, including:
the processor is used for detecting the random access sequence sent by the terminal according to the corresponding relation between the random access sequence and the sending times; for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
Wherein the base station further comprises:
a transceiver for transmitting synchronization signal blocks to a terminal and mapping relationships between each of the synchronization signal blocks and a plurality of RACH transmission opportunities.
In a seventh aspect, an embodiment of the present invention further provides a base station, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements the above configuration method when executing the program.
In an eighth aspect, an embodiment of the present invention further provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements the above-described transmission method when executing the program.
In a ninth aspect, an embodiment of the present invention further provides a base station, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements the above-described detection method when executing the program.
In a tenth aspect, embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, the program, when executed by a processor, implementing the steps in the configuration method as described above, or the program, when executed by a processor, implementing the steps in the transmission method as described above, or the program, when executed by a processor, implementing the steps in the detection method as described above.
The technical scheme of the invention has the following beneficial effects: different from the situation in the prior art, the method and the device can ensure the uplink access coverage area, have less limitation on the uplink and downlink proportion, reduce the user time delay and improve the user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a diagram illustrating three formats of random access sequences in the prior art;
fig. 2 is a flowchart illustrating a method for configuring random access information according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for transmitting random access information according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for transmitting random access information according to a third embodiment of the present invention;
fig. 5 is a diagram of transmission symbols occupied by N RACH transmission opportunities in some preferred embodiments of the present invention;
fig. 6 is a flowchart illustrating a method for detecting random access information according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station according to a fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal according to a sixth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base station according to a seventh embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a base station according to some preferred embodiments of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 2, fig. 2 is a schematic flowchart of a method for transmitting random access information according to an embodiment of the present invention, where the method is applied to a base station, and includes:
step S21: transmitting configuration information of a random access sequence, the configuration information including: and the corresponding relation between the random access sequence and the sending times.
By adopting the method, the base station sends the configuration information of the random access sequence, the configuration information is used for indicating the terminal to send the random access sequence according to the configuration information, the terminal can determine the sending times of the random access sequence according to the quality of the channel, the coverage of uplink access can be ensured, the limitation on the uplink and downlink proportion is not too large, and the flexibility of system configuration is ensured.
In some embodiments of the present invention, the correspondence between the random access sequence and the number of transmissions includes: the method comprises the steps of obtaining at least two random access sequence groups and the sending times of random access sequences in each random access sequence group, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different.
For example, the correspondence between the random access sequence and the number of transmissions includes: random access sequence group 1, group 2, … …, group M (M is a positive integer greater than or equal to 2), and the number of transmissions of the random access sequence corresponding to each random access sequence group. The random access sequence group n indicates that M random access sequences need to be transmitted, that is, the number of transmission times of any random access sequence in the random access sequence group n is M, and M is a positive integer less than or equal to M.
For another example, the correspondence between the random access sequence and the number of transmissions includes: the random access sequence group 1 and the group 2, and the number of transmissions of the random access sequence corresponding to the 2 random access sequence groups. Wherein, the Random Access sequence group 1 indicates that 1 Random Access sequence needs to be sent on a Random Access Channel (RACH) transmission opportunity; the random access sequence group 2 indicates that N2 random access sequences need to be transmitted on N2 RACH transmission opportunities, N2 being a positive integer greater than or equal to 2.
In some other embodiments of the present invention, the correspondence between the random access sequence and the number of transmissions includes: the number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
For example, the correspondence between the random access sequence and the number of transmissions includes: the number of random access sequences in the random access sequence groups 1, 2 and 3 is respectively 10, 30 and 24, and the number of transmission times of the random access sequences in the random access sequence groups 1, 2 and 3 is respectively 1, 2 and 3. The random access sequences in the random access sequence group 1 are the 1 st to 10 th random access sequences, and the sending times are 1 time; the random access sequences in the random access sequence group 2 are the 11 th to 40 th random access sequences, and the sending times are 2 times; the random access sequences in the random access sequence group 3 are 41 th to 64 th random access sequences, and the number of transmissions is 3.
The numerical values in the above embodiments are only exemplary, and the numerical values can be flexibly adjusted according to actual requirements, and the present invention is not limited.
In the above embodiment, the configuration information sent to the terminal may be adjusted in combination with multiple factors such as channel quality, so that the terminal accesses the network more efficiently.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for transmitting random access information according to a second embodiment of the present invention, where the method includes:
step S31: and determining the sending times N of the random access sequence to be sent, wherein the N is a positive integer greater than or equal to 1.
Step S32: and selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times.
Step S33: the selected random access sequences are transmitted on N RACH transmission opportunities, respectively.
By adopting the method, the sending times N for sending the random access sequence can be determined according to the needs, for example, when the channel quality is good, the determined sending times N for sending the random access sequence can be smaller, for example, 1, namely, the random access sequence is sent once only on one RACH transmission opportunity, and a short sequence Format can be sent, for example, the sequence in the Format of Format 0 in FIG. 1 is sent once only, the uplink transmission time of the short sequence Format is shorter, so that the uplink and downlink proportion is reduced; when the channel quality is poor, the determined number of sending times N for sending the random access sequence may be larger, for example, 4, that is, 4 random access sequences are sent on 4 RACH transmission opportunities, at this time, a long sequence Format does not need to be sent, and a sequence in a Format of Format 0 may be sent by sending 4 short sequence formats, for example, on 4 time-division transmission opportunities, so as to reduce the uplink and downlink ratio.
Therefore, the invention can ensure the uplink access coverage area, has less limitation on the uplink and downlink proportion, reduces the user time delay and improves the user experience.
In the above embodiment, the correspondence between the random access sequence and the number of transmissions includes: the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or the number of the random access sequence groups, the number of the random access sequences in each random access sequence group and the sending times of the random access sequences in each random access sequence group.
Preferably, before step S32, the method further includes:
receiving configuration information of the random access sequence sent by a base station, wherein the configuration information comprises: and the corresponding relation between the random access sequence and the sending times.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for transmitting random access information according to a third embodiment of the present invention, where the method is applied to a terminal, and includes:
step S41: and acquiring the path loss between the terminal and the base station.
And obtaining the path loss of the information transmitted to the terminal by the base station through estimation. In general, path loss is related to signal strength, for example: when the terminal is located at the edge of the cell, the signal is weak, and the path loss of the information transmitted to the terminal by the base station is high; when the terminal is located in the center of the cell, the signal is strong, and the path loss of the information transmitted from the base station to the terminal is low.
Step S42: and determining the sending times N of the random access sequence to be sent according to the path loss.
According to the estimated path loss, how many time-division RACH transmission opportunities Msg1, denoted as N, need to be sent before a Random Access response window (RAR window) starts.
If the path loss between the terminal and the base station is high, the number of times of sending the random access sequence is large; the path loss between the terminal and the base station is low, and the number of transmissions required to transmit the random access sequence is small.
Step S43: and selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times.
For example: and determining the sending times N of the random access sequence to be 4, determining a random access sequence group with the sending times of 4 according to the corresponding relation between the random access sequence and the sending times, and selecting a random access sequence from the random access sequence group.
Step S44: the selected random access sequences are transmitted on N RACH transmission opportunities, respectively.
In this step, the selected random access sequence may be sent on N RACH transmission opportunities in one RACH period, or the selected random access sequence may be sent on N RACH transmission opportunities in different RACH periods.
In some preferred embodiments of the present invention, the transmission symbols occupied by the N RACH transmission opportunities do not overlap. Referring to fig. 5, random access sequences are respectively transmitted on 3 RACH transmission opportunities, where a transmission symbol occupied by a 1 st RACH transmission opportunity is a 1 st symbol occupying only one subframe (the 1 st symbol is only used for example, and may be other values); the transmission symbol occupied by the 2 nd RACH transmission opportunity is the 2 nd symbol occupying one subframe; the 3 rd RACH transmission opportunity occupies a transmission symbol which is the 3 rd symbol occupying one subframe.
The numerical values in the above embodiments are only exemplary, and the numerical values can be flexibly adjusted according to actual requirements, and the present invention is not limited.
In some preferred embodiments of the present invention, before the step of transmitting the selected random access sequences on N RACH transmission opportunities respectively, the method further includes: and receiving the synchronous signal blocks transmitted by the base station and the mapping relation between each synchronous signal block and a plurality of RACH transmission opportunities. The step of transmitting the selected random access sequences on N RACH transmission opportunities respectively comprises: and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
Specifically, the terminal receives a synchronization signal block sent by the base station, completes synchronization by using the synchronization signal block, and stores a mapping relation between each synchronization signal block and a plurality of time-divided RACH transmission opportunities.
The mapping relationship between a synchronization signal block and a plurality of time-divided RACH transmission opportunities may be a correspondence relationship between the synchronization signal block and which time-divided RACH transmission opportunities.
For example: the base station configures 6 time-division RACH transmission opportunities in total, and a synchronization signal block SSblock1 sent to the terminal by the base station has a corresponding relationship with the 1 st, 3 rd, 5 th and 6 th time-division RACH transmission opportunities in one RACH period, and the corresponding relationship is the mapping relationship. When the number of transmission times N that the random access sequence needs to be transmitted is determined to be 2, 2 random access sequences are selected from the 1 st, 3 rd, 5 th and 6 th time division RACH transmission opportunities of the RACH period, and the selected random access sequences are uploaded on the selected 2 time division RACH transmission opportunities.
Optionally, the mapping relationship between a synchronization signal block and a plurality of time-division RACH transmission opportunities may be a mapping relationship with a plurality of time-division RACH transmission opportunities in one RACH period, or may be a mapping relationship with a plurality of time-division RACH transmission opportunities in different RACH periods, which is not limited in the present invention.
For example: the method comprises the steps that 16 time-division RACH transmission opportunities are shared in one RACH period, one synchronization signal block corresponds to 5 RACH transmission opportunities respectively, and a first synchronization signal block sent by a base station and received by a terminal corresponds to the 1 st to 5 th transmission opportunities in the RACH period; the 2 nd sync signal block corresponds to the 6 th to 10 th transmission opportunities in the RACH period; the 3 rd sync signal block corresponds to 11 th to 15 th transmission opportunities in the RACH period; the 4 th synchronization signal block corresponds to the 16 th transmission opportunity in the RACH period and the 1 st to 4 th transmission opportunities in the next RACH period.
In some preferred embodiments of the present invention, frequency division multiplexing of RACH transmission opportunities associated with multiple synchronization signal blocks is supported, so that system configuration is more flexible, user delay is further reduced, and user experience is improved.
Referring to fig. 6, fig. 6 is a schematic flowchart of a method for detecting random access information according to a fourth embodiment of the present invention, where the method is applied to a base station, and includes:
step S61: and detecting the random access sequence sent by the terminal according to the corresponding relation between the random access sequence and the sending times.
Step S62: for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
By adopting the method, the invention can ensure the uplink access coverage, has less limitation on the uplink and downlink proportion, reduces the user time delay and improves the user experience.
Preferably, the correspondence between the random access sequence and the number of transmissions includes: the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or the number of the random access sequence groups, the number of the random access sequences in each random access sequence group and the sending times of the random access sequences in each random access sequence group.
For example, in an application scenario, the base station performs correlation detection on the random access sequence sent by the terminal and the 64 random access sequences according to the corresponding relationship between the random access sequence and the sending times and by combining the 64 random access sequence codes known by the base station, obtains the random access sequence with the largest correlation value among the 64 random access sequences, and further determines which random access sequence in which random access sequence group the random access sequence sent by the terminal is, and the sending times N of the random access sequence.
The random access sequence sent by the terminal is uploaded to the base station by the terminal on a time-division RACH transmission opportunity, and then the base station detects the random access sequence on each transmission opportunity independently.
And the random access sequence sent by the terminal is uploaded to the base station by the terminal on a plurality of time-division RACH transmission opportunities, and the random access sequence is combined and detected on the plurality of RACH transmission opportunities. For example: a synchronization signal block SSblock2 sent by the base station to the terminal has a mapping relationship with 3 time-division RACH transmission opportunities (denoted as 1 st, 2 nd, and 3 rd time-division RACH transmission opportunities, respectively) in one RACH period. And according to the corresponding relation between the random access sequence and the sending times, assuming that the sending times of the random access sequence sent by the terminal is 2 times, carrying out combination detection on the 1 st and 2 nd, the 2 nd and 3 rd, and the 1 st and 3 rd transmission opportunities. And completing the detection of all 64 random access sequences according to the operation, wherein the random access sequence with the maximum correlation value is the random access sequence sent by the terminal.
In some preferred embodiments of the present invention, before the step of determining the number N of transmissions of the random access sequence transmitted by the terminal according to the corresponding relationship between the random access sequence and the number of transmissions, the method further includes: and sending the synchronous signal blocks to the terminal, and mapping relation between each synchronous signal block and a plurality of RACH transmission opportunities. Therefore, the terminal can complete the synchronization with the base station in real time according to the synchronous signal block and send the random access sequence on the random access channel according to the mapping relation.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a base station according to a fifth embodiment of the present invention. The base station 700 includes:
a transceiver 701, configured to transmit configuration information of a random access sequence, where the configuration information includes: and the corresponding relation between the random access sequence and the sending times.
Further, the correspondence between the random access sequence and the number of transmissions includes:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
It should be noted that the transceiver 701 of the base station 700 of the present embodiment may respectively perform corresponding steps in the above configuration method for random access information, and therefore, the description is not repeated herein, and please refer to the description of the corresponding steps of the configuration method in detail.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a terminal according to a sixth embodiment of the present invention. The terminal 800 includes:
a processor 801, configured to determine a number N of transmissions of a random access sequence, where N is a positive integer greater than or equal to 1; selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times;
a transceiver 802 for transmitting the selected random access sequences on the N RACH transmission opportunities, respectively.
Further, the correspondence between the random access sequence and the number of transmissions includes:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
Further, the transceiver 802 is configured to receive configuration information of the random access sequence sent by a base station, where the configuration information includes: and the corresponding relation between the random access sequence and the sending times.
Further, the processor 801 is configured to obtain a path loss between the terminal and the base station; and determining the sending times N of the random access sequence to be sent according to the path loss.
Further, the transmission symbols occupied by the N RACH transmission opportunities do not overlap.
Further, the transceiver 802 is configured to receive synchronization signal blocks sent by a base station, and mapping relationships between each synchronization signal block and a plurality of RACH transmission opportunities; and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
It should be noted that, the processor 801 and the transceiver 802 of the terminal 800 of the embodiment may respectively perform corresponding steps in the foregoing method for transmitting random access information, and therefore, detailed description is not repeated here, and please refer to the description of the corresponding steps.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a base station according to a seventh embodiment of the present invention. The base station 900 includes:
a processor 901, configured to detect a random access sequence sent by a terminal according to a corresponding relationship between the random access sequence and a sending frequency; for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
Further, referring to fig. 10, the base station 900 further includes:
a transceiver 902 for transmitting synchronization signal blocks and mapping relationships between each of the synchronization signal blocks and a plurality of RACH transmission opportunities to a terminal.
It should be noted that, the processor 901 and the transceiver 902 of the base station 900 in this embodiment may respectively execute corresponding steps in the above detection method for random access information, and therefore, detailed description is not repeated here, and please refer to the description of the corresponding detection method steps above.
The invention also provides a base station which can execute any one of the configuration method embodiments to realize the configuration of the random access information. The base station comprises a memory, a processor and a computer program stored on the memory and executable on the processor; the processor implements the configuration method when executing the computer program, and therefore, the description is omitted here, and please refer to the description of the corresponding configuration method steps above in detail.
The invention also provides a terminal which can execute any one of the transmission method embodiments to realize the transmission of the random access information. The terminal comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor; the processor implements the transmission method when executing the computer program, and therefore, the details are not repeated here, and please refer to the description of the corresponding transmission method steps.
The invention also provides a base station which can execute any one of the detection method embodiments to realize the detection of the random access information. The base station comprises a memory, a processor and a computer program stored on the memory and executable on the processor; the processor implements the detection method when executing the computer program, and therefore, the description is omitted here, and please refer to the description of the corresponding detection method steps above in detail.
The present invention also provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the above-mentioned random access information configuring method, transmitting method or detecting method. The specific working process is the same as the configuration method embodiment, the transmission method embodiment or the detection method embodiment, and therefore, the detailed description is omitted here, and please refer to the description of the corresponding transmission method or detection method step above.
In summary, the present invention can ensure the uplink access coverage, and at the same time, has less limitation on the uplink and downlink ratio, and reduces the user delay and improves the user experience.
The Base Station in the embodiment of the present invention may be a Base Transceiver Station (BTS) in Global System for mobile communications (GSM) or Code Division Multiple Access (CDMA), may also be a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), may also be an evolved Node B (eNB, eNodeB) in LTE, or a relay Station, an Access point, or a Base Station in a future 5G network, and the like, and is not limited herein.
The terminal in the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a Terminal (User device or User Equipment), which are not limited herein.
Such computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, Phase-change Random Access Memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of RAM, Read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, Compact Disc Read only memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium may be used to store information that may be accessed by a computing device.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (24)
1. A method for configuring random access information is applied to a base station, and is characterized by comprising the following steps:
transmitting configuration information of a random access sequence, the configuration information including: and the corresponding relation between the random access sequence and the sending times.
2. The method according to claim 1, wherein the mapping relationship between the random access sequence and the number of transmissions comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
3. A transmission method of random access information is applied to a terminal, and is characterized in that the transmission method comprises the following steps:
determining the sending times N of the random access sequence to be sent, wherein N is a positive integer greater than or equal to 1;
selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times;
the selected random access sequences are transmitted on N RACH transmission opportunities, respectively.
4. The transmission method according to claim 3, wherein the correspondence between the random access sequence and the number of transmissions comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
5. The transmission method according to claim 3, wherein the step of selecting one random access sequence from the group of random access sequences corresponding to the N according to the correspondence between the random access sequence and the number of transmissions further comprises:
receiving configuration information of the random access sequence sent by a base station, wherein the configuration information comprises: and the corresponding relation between the random access sequence and the sending times.
6. The transmission method according to claim 3, wherein the step of determining the number of transmissions N required to transmit the random access sequence comprises:
acquiring path loss between a terminal and a base station;
and determining the sending times N of the random access sequence to be sent according to the path loss.
7. The transmission method of claim 3, wherein transmission symbols occupied by the N RACH transmission opportunities do not overlap.
8. The transmission method of claim 3, wherein the step of transmitting the selected random access sequences on N RACH transmission opportunities, respectively, is preceded by the step of:
receiving synchronous signal blocks sent by a base station and mapping relations between each synchronous signal block and a plurality of RACH transmission opportunities;
the step of transmitting the selected random access sequences on N RACH transmission opportunities respectively comprises:
and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
9. A detection method of random access information is applied to a base station, and is characterized in that the detection method comprises the following steps:
detecting a random access sequence sent by a terminal according to the corresponding relation between the random access sequence and the sending times;
for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
10. The detecting method according to claim 9, wherein before the step of determining the number of transmissions N of the random access sequence transmitted by the terminal according to the correspondence between the random access sequence and the number of transmissions, the method further comprises:
and sending the synchronous signal blocks to the terminal, and mapping relation between each synchronous signal block and a plurality of RACH transmission opportunities.
11. A base station, comprising:
a transceiver for transmitting configuration information of a random access sequence, the configuration information including: and the corresponding relation between the random access sequence and the sending times.
12. The base station of claim 11, wherein the correspondence of the random access sequence to the number of transmissions comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
13. A terminal, comprising:
the processor is used for determining the sending times N of the random access sequence needing to be sent, wherein the N is a positive integer greater than or equal to 1; selecting a random access sequence in the random access sequence group corresponding to the N according to the corresponding relation between the random access sequence and the sending times;
a transceiver for transmitting the selected random access sequences on the N RACH transmission opportunities, respectively.
14. The terminal of claim 13, wherein the correspondence between the random access sequence and the number of transmissions comprises:
the method comprises the following steps that at least two random access sequence groups and the sending times of random access sequences in each random access sequence group are obtained, wherein each random access sequence group comprises at least one random access sequence, and the random access sequences in each random access sequence group are different; or
The number of random access sequence groups, the number of random access sequences in each random access sequence group, and the number of times of sending the random access sequences in each random access sequence group.
15. The terminal of claim 13,
the transceiver is configured to receive configuration information of the random access sequence sent by a base station, where the configuration information includes: and the corresponding relation between the random access sequence and the sending times.
16. The terminal of claim 13,
the processor is configured to obtain a path loss between the terminal and the base station; and determining the sending times N of the random access sequence to be sent according to the path loss.
17. The terminal of claim 13, wherein transmission symbols occupied by the N RACH transmission opportunities do not overlap.
18. The terminal of claim 13,
the transceiver is used for receiving synchronous signal blocks sent by a base station and mapping relations between each synchronous signal block and a plurality of RACH transmission opportunities; and respectively transmitting the selected random access sequences on N RACH transmission opportunities corresponding to the same synchronous signal block according to the mapping relation.
19. A base station, comprising:
the processor is used for detecting the random access sequence sent by the terminal according to the corresponding relation between the random access sequence and the sending times; for a random access sequence corresponding to a transmission number N of 1, detecting the random access sequence on each RACH transmission opportunity individually; for random access sequences corresponding to a number of transmissions N greater than 1, the random access sequences are combined and detected over N RACH transmission opportunities.
20. The base station of claim 19, wherein the base station further comprises:
a transceiver for transmitting synchronization signal blocks to a terminal and mapping relationships between each of the synchronization signal blocks and a plurality of RACH transmission opportunities.
21. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the program, implements the configuration method according to claim 1 or 2.
22. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the program, implements the transmission method according to any one of claims 3 to 8.
23. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor implements the detection method according to claim 9 or 10 when executing the program.
24. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps in the configuration method as claimed in claim 1 or 2, or which program, when being executed by a processor, carries out the steps in the transmission method as claimed in any one of claims 3 to 8, or which program, when being executed by a processor, carries out the steps in the detection method as claimed in claim 9 or 10.
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| CN110677916B (en) | 2021-09-10 |
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