CN113133111A - Uplink scheduling request processing method and device - Google Patents

Uplink scheduling request processing method and device Download PDF

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Publication number
CN113133111A
CN113133111A CN202010027742.9A CN202010027742A CN113133111A CN 113133111 A CN113133111 A CN 113133111A CN 202010027742 A CN202010027742 A CN 202010027742A CN 113133111 A CN113133111 A CN 113133111A
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band
uplink scheduling
relay
sub
control information
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朱莉森
龚秋莎
冯绍鹏
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Potevio Information Technology Co Ltd
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Potevio Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The embodiment of the invention provides a method and a device for processing an uplink scheduling request, wherein the method comprises the following steps: sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble. According to the uplink scheduling request processing method and device provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the LTE230 system is added with relays is solved.

Description

Uplink scheduling request processing method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing an uplink scheduling request.
Background
In an application scenario of the TD-LTE230 system for power wireless communication, terminals (UEs) are distributed according to buildings, and UEs in a certain building are centralized, but are scattered for a cell. If each building or adjacent buildings has a small station, the performance of the UE of the building or adjacent buildings can be improved remarkably.
In the prior art, in such an application scenario, a relay manner is adopted as a supplement of a system, for example, a UE is adopted as a relay, the UE as the relay is called a relay terminal, which is referred to as a relay for short, and a Device-to-Device (D2D) function is realized through the relay, the relay has functions of a UE, a base station (eNB) and an Evolved Packet Core (EPC), can be used as a UE to access the base station, and can be used as a small base station to support access of UEs in a short distance, and the UEs can access both the base station in a macro network and the relay in a relay area, and are freely selected according to signal quality of a location where the UEs are located.
According to the existing resource allocation mode, Scheduling Request (SR) information occupies uplink pilot time slot (UpPTS) resources of a service sub-band, and each 8 radio frames are allocated to UEs in 8 cells. In the relay, in order not to affect the UE to receive the downlink signal of the macro-network base station at the same time, the uplink and downlink of the relay only occupy the uplink partial time domain of the original sub-band. In the service sub-band, the uplink time domain is compressed in sub-frame 3 and sub-frame 4, and physical uplink control channel PUCCH and physical uplink shared channel PUSCH resources need to be allocated. The UpPTS resource can no longer be provided for use in transmitting SR information. Therefore, in a relay scenario, how to transmit the SR preamble is an urgent technical problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a method and a device for processing an uplink scheduling request, which are used for solving the technical problems in the prior art.
In order to solve the foregoing technical problem, in one aspect, an embodiment of the present invention provides an uplink scheduling request processing method, including:
sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
Further, the cyclic prefix CP in the SR preamble occupies 613 to 640Ts of the subframe 3 of the preset frame structure, and the sequence in the SR preamble occupies 1 to 512Ts of the subframe 4 of the preset frame structure.
Further, the sequence in the SR preamble is a ZC sequence.
Further, the root index of the ZC sequence is 8, and each index corresponds to 16 different ZC sequences obtained by cyclic shift.
Further, when the SR preamble is transmitted to the relay, the random access preamble is also transmitted to the relay through the PUCCH according to the preset frame structure.
Further, the cyclic prefix CP in the random access preamble code occupies 73 th Ts to 100 th Ts of the subframe 3 of the preset frame structure, and the sequence in the random access preamble code occupies 101 th Ts to 612 th Ts of the subframe 3 of the preset frame structure.
In another aspect, an embodiment of the present invention provides a method for processing an uplink scheduling request, including:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
In another aspect, an embodiment of the present invention provides a method for processing an uplink scheduling request, including:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
In another aspect, an embodiment of the present invention provides a terminal, including:
the request module is used for sending an uplink Scheduling Request (SR) lead code to the relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on the synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
a receiving module, configured to receive downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
In another aspect, an embodiment of the present invention provides a relay, including:
the system comprises an acquisition module, a synchronization module and a scheduling module, wherein the acquisition module is used for a receiving terminal to transmit an uplink Scheduling Request (SR) lead code according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
the issuing module is used for sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
In another aspect, an embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
According to the uplink scheduling request processing method and device provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the LTE230 system is added with relays is solved.
Drawings
Fig. 1 is a schematic diagram of timeslot allocation of a frame structure in an LTE230 system in the prior art;
fig. 2 is a diagram of a random access time domain in an LTE230 system in the prior art;
fig. 3 is a schematic diagram illustrating service sub-band resource allocation of a relay in an LTE230 system in the prior art;
fig. 4 is a schematic diagram illustrating a method for processing an uplink scheduling request according to an embodiment of the present invention;
fig. 5 is a schematic diagram of allocating resources of a synchronized broadcast sub-band of a relay according to an embodiment of the present invention;
fig. 6 is a time domain structure diagram of an uplink scheduling request provided in an embodiment of the present invention;
fig. 7 is a schematic diagram of a method for processing an uplink scheduling request according to another embodiment of the present invention;
fig. 8 is a schematic diagram of a terminal according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a relay according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment 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 in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Currently, Long Term Evolution (LTE) provides a high-speed data transmission service for users as a 4G mainstream technology. For example, the TD-LTE230 system transmits acquisition commands in the downlink, and transmits various types of acquired data in the uplink.
Fig. 1 is a schematic diagram of timeslot matching of a frame structure in an LTE230 system in the prior art, and as shown in fig. 1, in the existing TD-LTE230 system, timeslot matching of uplink and downlink 3:1 is adopted, and a time domain value takes Ts as a basic unit. The radio frame length used for uplink and downlink transmission is 25ms (25ms equals 3200 × Ts). One radio frame consists of 5 subframes with the length of 5ms, and each subframe is 640Ts, wherein the subframe 0 is a downlink subframe, and the subframes 2, 3 and 4 are uplink subframes; the subframe 1 is a special subframe, and comprises 3 domains, namely a downlink pilot time slot DwPTS, a guard time GP and an uplink pilot time slot UpPTS, wherein the DwPTS occupies 285Ts, the GP occupies 71Ts and the UpPTS occupies 284 Ts.
The TD-LTE230 system is a discrete multi-subband system, and is divided into a broadcast subband, a synchronization subband and a service subband according to functions.
FIG. 2 is a diagram of a random access time domain in an LTE230 system in the prior art, and as shown in FIG. 2, a random access preamble consists of a cyclic prefix CP (T)CP36Ts) and the sequence (T)SEQ512 Ts). On the broadcasting sub-band, the uplink part of each wireless frame is divided into 4 random access time domains, the first random access time domain occupies 23Ts of GP tail, and T is arranged behind the last random access time domain of each wireless frameGT35Ts guard interval TGT，TGT35 Ts. The communication terminal calculates corresponding random access time domain index according to the identification code CID of the cell, and the calculation formula is
Figure BDA0002363076700000051
And randomly selecting a random access lead code from the random access time domain corresponding to the index
Figure BDA0002363076700000052
A secondary random access attempt.
The service request SR of the TD-LTE230 system is composed of a cyclic prefix CP (T)CP24Ts) and the sequence (T)SEQ256Ts), the ZC sequence is adopted, the UpPTS occupying the service sub-band generates 8 preambles through cyclic shift, and the preambles are used by 8 users. And the 8 radio frames are provided for users in 8 cells in a time-sharing manner, the communication terminal calculates the radio frame used by the corresponding SR according to the CID where the communication terminal is located, and the communication terminal uses the lead code appointed by the base station to perform service request.
In the application scenario of the TD-LTE230 system, UEs are distributed according to buildings, and UEs in a building are centralized for a certain building, but are scattered for a cell. If each building or adjacent buildings has a small station, the performance of the UE of the building or adjacent buildings can be improved remarkably.
In this application scenario, a relay method is adopted as a supplement of the system, for example, a UE is adopted as a relay, the UE as the relay is called a relay terminal, which is called a relay for short, and the D2D function is implemented by the relay, the relay has functions of a UE, an eNB and an EPC, and can be used as a UE to access a base station by itself, and can also be used as a small base station to support access by UEs in a short distance, and these UEs can access both a base station in a macro network and a relay in a relay area, and can be freely selected according to the signal quality of the location of the UEs.
Fig. 3 is a schematic diagram illustrating service subband resource allocation of a relay in an LTE230 system in the prior art, and as shown in fig. 3, according to the existing resource allocation manner, SR information occupies UpPTS resources of a service subband, and is allocated to UEs in 8 cells for use every 8 radio frames. In the relay, in order not to affect the UE to receive the downlink signal of the macro-network base station at the same time, the uplink and downlink of the relay only occupy the uplink partial time domain of the original sub-band. In the traffic sub-band, the uplink time domain is compressed in sub-frame 3 and sub-frame 4, and PUCCH and PUSCH resources need to be allocated. The UpPTS resource can no longer be provided for use in transmitting SR information. Therefore, in a relay scenario, how to transmit the SR preamble is an urgent technical problem to be solved.
In order to solve the above technical problems, embodiments of the present invention provide a method for processing an uplink scheduling request, where transmission of an SR preamble no longer occupies uplink resources of a service sub-band, but uses uplink resources of a synchronous broadcast sub-band for transmission, so as to solve the technical problem that the SR preamble cannot be transmitted after a relay is added in an LTE230 system.
Fig. 4 is a schematic diagram of an uplink scheduling request processing method according to an embodiment of the present invention, and as shown in fig. 4, an uplink scheduling request processing method according to an embodiment of the present invention is provided, where an execution subject is a terminal. The method comprises the following steps:
step S401, sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band.
Specifically, fig. 5 is a schematic diagram of resource allocation of a synchronization broadcast subband of a relay according to an embodiment of the present invention, and as shown in fig. 5, when a terminal needs to perform an uplink scheduling request, an uplink scheduling request SR preamble is sent to the relay according to a preset frame structure through a physical uplink control channel PUCCH on the synchronization broadcast subband.
The synchronous broadcast sub-band is a part of the service sub-band.
In this embodiment, the transmission of the SR preamble no longer occupies the uplink resource of the service sub-band, but uses the uplink resource of the synchronization broadcast sub-band for transmission, so as to solve the technical problem that the SR preamble cannot be transmitted after the relay is added in the LTE230 system.
Step S402, receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
Specifically, the terminals of the relay cell are all single sub-bands, and all SR preambles are transmitted on the broadcast sub-bands. After the terminal transmits the SR preamble, the PUCCH on the synchronized broadcast subband receives the SR preamble, and after the terminal receives the SR preamble, the terminal transmits downlink control information to and from the designated subband. The downlink control information includes an uplink scheduling grant.
The selection mode of the sub-band is consistent with the selection mode of the message 2 of random access, and N usable sub-bands which can be used by the relay cell are specified in the broadcast message.
The terminal needs to wait for receiving the downlink control information on a physical downlink control channel PDCCH of a specified sub-band. And the terminal reports the cyclic shift module N through the SR message, and the corresponding sub-band is the sub-band waiting for receiving the downlink control information.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, further, the cyclic prefix CP in the SR preamble occupies 613 th to 640 th Ts of the subframe 3 of the preset frame structure, and the sequence in the SR preamble occupies 1 st to 512 th Ts of the subframe 4 of the preset frame structure.
Specifically, fig. 6 is a time domain structure diagram of an uplink scheduling request according to an embodiment of the present invention, and as shown in fig. 6, in the embodiment of the present invention, a cyclic prefix CP in an SR preamble occupies 613 to 640Ts of a subframe 3 in a preset frame structure, and a sequence in the SR preamble occupies 1 to 512Ts of a subframe 4 in the preset frame structure.
128Ts remained at the tail of the subframe 4 are used for relay uplink measurement, and the selected uplink measurement can be used as a synchronous broadcast sub-band.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, further, the sequence in the SR preamble is a ZC sequence.
Specifically, in the embodiment of the present invention, the sequence in the SR preamble is a ZC sequence.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, further, the root index of the ZC sequence is 8, and each index corresponds to 16 different ZC sequences obtained by cyclic shift.
Specifically, in the embodiment of the present invention, the sequence of SR preambles provides at least 8 available root index u values for 8 cell codes. The SR preambles of the same cell may be configured in multiple u. The transmission period of the SR information is fixed to 1 radio frame, and repeated transmission is not supported. And a different SR preamble code under each u value is provided for 16 users to use through cyclic shift, so that 16 x Nu users are provided for each radio frame to simultaneously initiate random access, and Nu is the number of u values used by the cell.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the foregoing embodiments, further, when the SR preamble is sent to the relay, a random access preamble is also sent to the relay through the PUCCH according to the preset frame structure.
In particular, the UE may not have SR resources in some cases. Scene one: from 36.331, the schedulingRequestConfig is an optional IE (optional) at the UE level, with release by default. If the eNodeB does not configure SR for a certain UE (depending on the implementation of different vendors), the UE can only acquire UL grant (allocated in RAR) through random access procedure.
Scene two: when the UE loses uplink synchronization, it also releases SR resources, and if there is uplink data to send, it also needs to trigger the random access procedure.
As can be seen from the above description, when the UE is not allocated SR resources, the contention-based random access procedure may be used to apply for uplink resources instead of the function of SR. But this is only applicable in case of low density of uplink resource requests.
In the embodiment of the invention, the terminal sends the SR lead code to the relay and simultaneously sends the random access lead code to the relay according to the preset frame structure through the PUCCH.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, further, the cyclic prefix CP in the random access preamble occupies 73 th Ts to 100 th Ts of the subframe 3 of the preset frame structure, and the sequence in the random access preamble occupies 101 th Ts to 612 th Ts of the subframe 3 of the preset frame structure.
Specifically, fig. 6 is a time domain structure diagram of an uplink scheduling request according to an embodiment of the present invention, and as shown in fig. 6, in the embodiment of the present invention, a terminal sends an SR Preamble to a relay and also sends a random access Preamble to the relay through a PUCCH according to a preset frame structure.
The cyclic prefix CP in the random access preamble code occupies 73 th Ts to 100 th Ts of the subframe 3 of the preset frame structure, and the sequence in the random access preamble code occupies 101 th Ts to 612 th Ts of the subframe 3 of the preset frame structure.
The random access preamble provides at least 8 usable u values for 8 cell code division. The random access preamble of the same cell may be configured in multiple u. The transmission period of random access is fixed to be 1 wireless frame, and repeated transmission is not supported. Different preambles under each u value are provided for 16 users to use through cyclic shift, so that 16 x Nu users are provided for each radio frame to simultaneously initiate random access, and Nu is the number of u values used by the cell.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, fig. 7 is a schematic diagram of an uplink scheduling request processing method according to another embodiment of the present invention, and as shown in fig. 7, an embodiment of the present invention provides an uplink scheduling request processing method, an execution subject of which is a relay, the method including:
step S701, a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band.
Step S702, sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
Specifically, fig. 5 is a schematic diagram of resource allocation of a synchronization broadcast subband of a relay according to an embodiment of the present invention, and as shown in fig. 5, when a terminal needs to perform an uplink scheduling request, an uplink scheduling request SR preamble is sent to the relay according to a preset frame structure through a physical uplink control channel PUCCH on the synchronization broadcast subband.
The synchronous broadcast sub-band is a part of the service sub-band.
In this embodiment, the transmission of the SR preamble no longer occupies the uplink resource of the service sub-band, but uses the uplink resource of the synchronization broadcast sub-band for transmission, so as to solve the technical problem that the SR preamble cannot be transmitted after the relay is added in the LTE230 system.
Terminals of the relay cell are all single sub-bands, and all SR lead codes are transmitted on the broadcast sub-bands. After the terminal transmits the SR preamble, the PUCCH on the synchronized broadcast subband receives the SR preamble, and after the terminal receives the SR preamble, the terminal transmits downlink control information to and from the designated subband. The downlink control information includes an uplink scheduling grant.
The selection mode of the sub-band is consistent with the selection mode of the message 2 of random access, and N usable sub-bands which can be used by the relay cell are specified in the broadcast message.
The terminal needs to wait for receiving the downlink control information on a physical downlink control channel PDCCH of a specified sub-band. And the terminal reports the cyclic shift module N through the SR message, and the corresponding sub-band is the sub-band waiting for receiving the downlink control information.
According to the uplink scheduling request processing method provided by the embodiment of the invention, the transmission of the SR lead code does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Based on any of the above embodiments, fig. 8 is a schematic diagram of a terminal provided in an embodiment of the present invention, and as shown in fig. 8, an embodiment of the present invention provides a terminal, which includes a request module 801 and a receiving module 802, where:
the request module 801 is configured to send an uplink scheduling request SR preamble to the relay according to a preset frame structure through a physical uplink control channel PUCCH on the synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; the receiving module 802 is configured to receive downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
According to the terminal provided by the embodiment of the invention, the SR lead code transmission does not occupy the uplink resource of the service sub-band any more, but utilizes the uplink resource transmission of the synchronous broadcast sub-band, so that the technical problem that the SR lead code cannot be transmitted after the LTE230 system is added with relays is solved.
Based on any of the above embodiments, fig. 9 is a schematic diagram of a relay provided in an embodiment of the present invention, and as shown in fig. 9, an embodiment of the present invention provides a relay, which includes an obtaining module 901 and a sending module 902, where:
the obtaining module 901 is configured to send an uplink scheduling request SR preamble according to a preset frame structure by a receiving terminal through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; the issuing module 902 is configured to send downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
According to the relay provided by the embodiment of the invention, the SR lead code is transmitted without occupying the uplink resource of the service sub-band, and the uplink resource of the synchronous broadcast sub-band is used for transmission, so that the technical problem that the SR lead code cannot be transmitted after the relay is added in the LTE230 system is solved.
Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 10, the electronic device includes: a processor (processor)1001, a communication Interface (communication Interface)1002, a memory (memory)1003 and a communication bus 1004, wherein the processor 1001, the communication Interface 1002 and the memory 1003 complete communication with each other through the communication bus 1004. The processor 1001 and the memory 1002 communicate with each other via a bus 1003. Processor 1001 may call logic instructions in memory 1003 to perform the following method:
sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
Or the following method:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Further, embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the steps of the above-described method embodiments, for example, including:
sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
Or the following method:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
Further, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above method embodiments, for example, including:
sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
Or the following method:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band; sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An uplink scheduling request processing method, comprising:
sending an uplink Scheduling Request (SR) lead code to a relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
receiving downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
2. The method according to claim 1, wherein a Cyclic Prefix (CP) in the SR preamble occupies 613Ts to 640Ts of a subframe 3 of the preset frame structure, and a sequence in the SR preamble occupies 1Ts to 512Ts of a subframe 4 of the preset frame structure.
3. The method as claimed in claim 2, wherein the sequence in the SR preamble is a ZC sequence.
4. The method as claimed in claim 3, wherein the root index of the ZC sequences is 8, each index corresponding to 16 different ZC sequences obtained by cyclic shift.
5. The method of claim 1, wherein a random access preamble is transmitted to the relay through the PUCCH according to the preset frame structure while an SR preamble is transmitted to the relay.
6. The method according to claim 5, wherein a Cyclic Prefix (CP) in the random access preamble occupies the 73 th Ts to 100 th Ts of the subframe 3 of the preset frame structure, and a sequence in the random access preamble occupies the 101 th to 612 th Ts of the subframe 3 of the preset frame structure.
7. An uplink scheduling request processing method, comprising:
a receiving terminal sends an uplink scheduling request SR lead code according to a preset frame structure through a physical uplink control channel PUCCH on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
8. A terminal, comprising:
the request module is used for sending an uplink Scheduling Request (SR) lead code to the relay according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on the synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
a receiving module, configured to receive downlink control information; the downlink control information includes an uplink scheduling grant, and the downlink control information is issued by the relay after receiving the SR preamble.
9. A relay, comprising:
the system comprises an acquisition module, a synchronization module and a scheduling module, wherein the acquisition module is used for a receiving terminal to transmit an uplink Scheduling Request (SR) lead code according to a preset frame structure through a Physical Uplink Control Channel (PUCCH) on a synchronous broadcast sub-band; the synchronous broadcast sub-band is a part of the service sub-band;
the issuing module is used for sending downlink control information to the terminal; the downlink control information includes an uplink scheduling grant.
10. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for processing an uplink scheduling request according to any one of claims 1 to 7 when executing the computer program.
CN202010027742.9A 2020-01-10 2020-01-10 Uplink scheduling request processing method and device Withdrawn CN113133111A (en)

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CN102843180A (en) * 2011-06-24 2012-12-26 普天信息技术研究院有限公司 Method of data transmission in channel
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