CN113395713A - Inter-slot frequency hopping method, terminal equipment, base station and frequency hopping system - Google Patents
Inter-slot frequency hopping method, terminal equipment, base station and frequency hopping system Download PDFInfo
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- CN113395713A CN113395713A CN202010168486.5A CN202010168486A CN113395713A CN 113395713 A CN113395713 A CN 113395713A CN 202010168486 A CN202010168486 A CN 202010168486A CN 113395713 A CN113395713 A CN 113395713A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- 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
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- 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 disclosure provides a frequency hopping method, terminal equipment, a base station and a frequency hopping system among time slots, and relates to the technical field of wireless communication. In the disclosure, a terminal device receives a frequency hopping parameter and a frequency hopping starting instruction sent by a base station; and the terminal equipment responds to the instruction of starting frequency hopping, frequency hopping is carried out among all the time slot groups according to the frequency hopping parameters, uplink information is transmitted, the resource blocks used by each time slot group during frequency hopping are determined according to the resource block indication information in the frequency hopping parameters, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to the number indication information in the frequency hopping parameters. When the terminal starts the inter-slot frequency hopping to send the uplink information, the adjacent multiple slots use the same resource block RB, so that the base station can carry out combined channel estimation on the multiple slots, the uplink channel estimation performance is improved, and the success rate of uplink information demodulation and the uplink coverage performance are further improved.
Description
Technical Field
The present disclosure relates to the field of wireless communication technologies, and in particular, to a method, a terminal device, a base station, and a frequency hopping system for frequency hopping between timeslots.
Background
With the development of the fifth Generation (5th Generation, abbreviated as 5G) mobile communication technology, users expect better performance of signals received by the terminal device. However, for some cell edge users, the Signal to Interference plus Noise Ratio (SINR) of the edge user network is usually low, resulting in poor performance of the base station for channel estimation.
In some related technologies, inter-slot frequency hopping is supported by a New Radio (NR) protocol (also referred to as a 5G protocol), and different Resource Blocks (RBs) are used for adjacent slots.
Disclosure of Invention
The inventor finds that, in the related art, Resource Blocks (RBs) used by adjacent slots are different, so that the base station cannot adopt multi-slot joint channel estimation, and the performance of the base station on channel estimation is poor.
In the embodiment of the disclosure, when the terminal starts inter-slot frequency hopping to send uplink information, a plurality of adjacent slots are used as a slot group to use the same resource block RB, so that the base station can perform joint channel estimation on a plurality of slots of the slot group, the uplink channel estimation performance is improved, and then the success rate of uplink information demodulation and the uplink coverage performance are improved.
According to some embodiments of the present disclosure, there is provided an inter-slot frequency hopping method, including:
the method comprises the steps that terminal equipment receives frequency hopping parameters sent by a base station, wherein the frequency hopping parameters comprise quantity indication information of adjacent time slots contained in a time slot group and resource block indication information used by each time slot group during frequency hopping;
the terminal equipment receives a frequency hopping starting instruction sent by a base station;
and the terminal equipment responds to the instruction for starting frequency hopping, carries out frequency hopping among all the time slot groups according to the frequency hopping parameters and transmits uplink information, wherein a resource block used by each time slot group during frequency hopping is determined according to the resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to the number indication information.
In some embodiments, the resource block indication information includes a starting resource block and a frequency offset, and the resource block used by each slot group during frequency hopping is determined according to the resource block indication information, including: and when the terminal equipment performs frequency hopping, the resource block used by the first time slot group is the starting resource block, and the resource blocks used by other time slot groups are the resource blocks shifted according to the frequency offset on the basis of the starting resource block.
In some embodiments, the uplink information includes one of physical uplink control channel, PUCCH, information and physical uplink shared channel, PUSCH, information.
According to other embodiments of the present disclosure, there is provided an inter-slot frequency hopping method, including: a base station sends frequency hopping parameters to terminal equipment, wherein the frequency hopping parameters comprise quantity indication information of adjacent time slots contained in one time slot group and resource block indication information used by each time slot group during frequency hopping; a base station sends a frequency hopping starting instruction so that the terminal equipment responds to the frequency hopping starting instruction, frequency hopping is carried out among all time slot groups according to the frequency hopping parameters, uplink information is transmitted, wherein a resource block used by each time slot group during frequency hopping is determined according to the resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to the number indication information; the base station carries out joint channel estimation on a plurality of adjacent time slots in each time slot group corresponding to the terminal equipment when the terminal equipment transmits uplink information; and the base station demodulates the uplink information transmitted by the terminal equipment according to the result of the joint channel estimation.
In some embodiments, the resource block indication information includes a starting resource block and a frequency offset, so as to indicate that a resource block used by a first slot group when the terminal device frequency hops is the starting resource block, and resource blocks used by other slot groups are resource blocks shifted by the frequency offset on the basis of the starting resource block.
In some embodiments, the frequency hopping parameter is sent via radio resource control, RRC, signaling.
In some embodiments, the signaling for starting frequency hopping is sent through downlink control signaling DCI of a physical layer.
According to still further embodiments of the present disclosure, there is provided a terminal device including: a memory; and a processor coupled to the memory, the processor configured to perform the inter-slot frequency hopping method performed by the terminal device of any of the embodiments based on instructions stored in the memory.
According to still further embodiments of the present disclosure, there is provided a base station including: a memory; and a processor coupled to the memory, the processor configured to perform the inter-slot frequency hopping method of any embodiment based on instructions stored in the memory.
According to still further embodiments of the present disclosure, there is provided an inter-slot frequency hopping system, including: the terminal device of any embodiment; and a base station as in any embodiment.
According to still further embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the inter-slot frequency hopping method of any of the embodiments.
Drawings
The drawings that will be used in the description of the embodiments or the related art will be briefly described below. The present disclosure can be understood more clearly from the following detailed description, which proceeds with reference to the accompanying drawings.
It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without undue inventive faculty.
Fig. 1 illustrates a flow diagram of an inter-slot frequency hopping method according to some embodiments of the present disclosure.
Fig. 2 is a diagram illustrating frequency hopping based on a single slot in the related art.
Fig. 3 illustrates a schematic diagram of frequency hopping based on groups of timeslots, according to some embodiments of the present disclosure.
Fig. 4 illustrates an exemplary block diagram of a terminal device in accordance with some embodiments of the present disclosure.
Fig. 5 illustrates an example block diagram of a base station in accordance with some embodiments of the present disclosure.
Fig. 6 illustrates an exemplary block diagram of an inter-slot frequency hopping system according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
Fig. 1 illustrates a flow diagram of an inter-slot frequency hopping method according to some embodiments of the present disclosure. The method may be performed in some embodiments by, for example, a frequency hopping system between time slots.
As shown in fig. 1, the method of this embodiment comprises steps 101-103.
In step 101, the base station configures a frequency hopping parameter and transmits the frequency hopping parameter to the terminal device.
The frequency hopping parameter includes the number indication information of adjacent slots included in a slot group and Resource Block (RB) indication information used by each slot group during frequency hopping. The number indication information of adjacent slots included in a slot group is also referred to as time domain slot number (for example, marked as K), and represents the number of slots in the slot group. The resource block indication information includes a starting resource block and a frequency offset (e.g., an index number which may be a frequency offset). The starting resource block (e.g., labeled RBstart) represents the resource block used by the first group of slots, and the frequency offset (e.g., labeled RBoffset) represents the frequency offset between different groups of slots, e.g., the frequency offset of the current group of slots relative to the first group of slots.
In some embodiments, the manner of configuring the frequency hopping parameter by the base station is, for example, that the base station sends the frequency hopping parameter to the terminal device through Radio Resource Control (RRC) signaling.
In step 102, the base station configures an instruction for starting frequency hopping, and sends a signaling for starting frequency hopping to the terminal device to instruct the terminal device to start frequency hopping.
The base station sends the signaling for starting frequency hopping to the terminal device, for example, through Downlink Control Information (DCI) of a physical layer.
In step 103, the terminal device responds to the instruction for starting frequency hopping, and performs frequency hopping among the time slot groups according to the received frequency hopping parameters and transmits uplink information.
First, the terminal device starts frequency hopping in response to an instruction to start frequency hopping.
Then, the terminal equipment determines the resource blocks used by each time slot group during frequency hopping according to the resource block indication information in the frequency hopping parameters sent by the base station. Examples include: according to the indication of the frequency hopping parameter, when the terminal equipment performs frequency hopping, the resource block used by the first time slot group is determined as the indicated starting resource block, and the resource blocks used by other time slot groups are determined as the resource blocks which are shifted according to the indicated frequency offset on the basis of the starting resource block.
Then, the terminal device determines the number of adjacent time slots included in each time slot group during frequency hopping. In some embodiments, the terminal device determines the number of adjacent time slots (i.e. the number K of time slots in time domain) included in each time slot group according to the number indication information of adjacent time slots included in one time slot group in the frequency hopping parameter transmitted by the base station.
And finally, the terminal equipment performs frequency hopping among all the time slot groups and transmits uplink information. The Uplink information includes one of Physical Uplink Control Channel (PUCCH) information and Physical Uplink Shared Channel (PUSCH) information.
As shown in fig. 2, a diagram for performing frequency hopping based on a single slot in the related art is shown. The horizontal axis represents the time of hopping and the vertical axis represents the frequency of hopping. Fig. 2 shows 8 slots, each slot uses a different resource block RB, and frequency offsets RBoffset between RB resources corresponding to the second slot, the third slot, … …, and the eighth slot and RB resources of the first slot are 2, 4, 6, 0, 2, 4, and 6, respectively, so that frequency hopping between single slots is achieved, and RB resources used in every two adjacent slots are different. Therefore, the base station can only perform channel estimation on each time slot, and the channel estimation performance is poor.
As shown in fig. 3, a diagram of frequency hopping based on groups of timeslots is shown, according to some embodiments of the present disclosure. The horizontal axis represents the time of hopping and the vertical axis represents the frequency of hopping. Fig. 3 shows 2 slot groups, each having 4 slots, 4 slots in a first slot group using the same RB resource, 4 slots in a second slot group using the same RB resource, the first slot group and the second slot group using different RB resources, and a frequency offset between the RB resource of the first slot group and the RB resource of the second slot group being RBoffset.
In step 104, the base station performs joint channel estimation on a plurality of slots in each slot group, and demodulates the uplink information sent by the terminal device based on the channel estimation result.
The base station performs joint channel estimation for a plurality of adjacent time slots within each time slot group. For example, as shown in fig. 3, the base station performs joint channel estimation on 4 adjacent slots in the first slot group, and performs joint channel estimation on 4 adjacent slots in the second slot group. Then, the base station demodulates the uplink information (for example, PUCCH or PUSCH information) transmitted by the terminal device according to the result of the joint channel estimation.
In the above embodiment, since the plurality of slots use the same RB resource, the base station may perform joint channel estimation on the plurality of slots, which may improve uplink channel estimation performance, and further improve the success rate of uplink information (e.g., PUCCH and PUSCH) demodulation and improve uplink coverage performance. For the users at the cell edge, because the signal-to-noise ratio at the cell edge is relatively low, the uplink channel estimation performance of the users can be improved by using the joint channel estimation scheme of the embodiment.
Fig. 4 illustrates an exemplary block diagram of a terminal device in accordance with some embodiments of the present disclosure.
As shown in fig. 4, the terminal device 400 of this embodiment includes: a memory 401 and a processor 402 coupled to the memory 401, the processor 402 being configured to execute, based on instructions stored in the memory 401, the inter-slot frequency hopping method performed by the terminal device in any of the embodiments of the present disclosure.
The memory 401 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), and other programs.
The terminal device 400 may further include an input-output interface 403, a network interface 404, a storage interface 405, and the like. These interfaces 403, 404, 405 and the memory 401 and the processor 402 may be connected by a bus 406, for example. The input/output interface 403 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 404 provides a connection interface for various networking devices. The storage interface 405 provides a connection interface for external storage devices such as an SD card and a usb disk.
Fig. 5 illustrates an example block diagram of a base station in accordance with some embodiments of the present disclosure.
As shown in fig. 5, the base station 500 of this embodiment includes: a memory 501 and a processor 502 coupled to the memory 501, the processor 502 being configured to execute the inter-slot frequency hopping method performed by the base station in any of the embodiments of the present disclosure based on instructions stored in the memory 501.
The memory 501 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), and other programs.
The base station 500 may also include an input-output interface 503, a network interface 504, a storage interface 505, and the like. These interfaces 503, 504, 505 and the connection between the memory 501 and the processor 502 may be, for example, via a bus 506. The input/output interface 503 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 504 provides a connection interface for various networking devices. The storage interface 505 provides a connection interface for external storage devices such as an SD card and a usb disk.
Fig. 6 illustrates an exemplary block diagram of an inter-slot frequency hopping system according to some embodiments of the present disclosure.
As shown in fig. 6, the inter-slot frequency hopping system 600 of this embodiment includes: a plurality of terminal devices 400 as shown in fig. 4, and a base station 500 as shown in fig. 5.
The terminal device 400 is configured to receive a frequency hopping parameter sent by the base station 500, where the frequency hopping parameter includes the number indication information of adjacent time slots included in one time slot group and resource block indication information used by each time slot group during frequency hopping; receiving a frequency hopping starting instruction sent by the base station 500, responding to the frequency hopping starting instruction, performing frequency hopping among the time slot groups according to a frequency hopping parameter, and transmitting uplink information, wherein a resource block used by each time slot group during frequency hopping is determined according to resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to number indication information.
The base station 500 is configured to transmit a frequency hopping parameter to the terminal device 400, where the frequency hopping parameter includes indication information of the number of adjacent slots included in one slot group and indication information of resource blocks used by each slot group in frequency hopping; sending a frequency hopping starting instruction so that the terminal device 400 responds to the frequency hopping starting instruction, performs frequency hopping among the time slot groups according to frequency hopping parameters and transmits uplink information, wherein a resource block used by each time slot group during frequency hopping is determined according to resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to number indication information; the base station 500 performs joint channel estimation on a plurality of adjacent time slots in each time slot group corresponding to the terminal device 400 when transmitting uplink information; the base station 500 demodulates the uplink information transmitted by the terminal device 400 according to the result of the joint channel estimation.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-non-transitory readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (11)
1. An inter-slot frequency hopping method, comprising:
the method comprises the steps that terminal equipment receives frequency hopping parameters sent by a base station, wherein the frequency hopping parameters comprise quantity indication information of adjacent time slots contained in a time slot group and resource block indication information used by each time slot group during frequency hopping;
the terminal equipment receives a frequency hopping starting instruction sent by a base station;
and the terminal equipment responds to the instruction for starting frequency hopping, carries out frequency hopping among all the time slot groups according to the frequency hopping parameters and transmits uplink information, wherein a resource block used by each time slot group during frequency hopping is determined according to the resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to the number indication information.
2. The inter-slot frequency hopping method of claim 1, wherein the resource block indication information includes a starting resource block and a frequency offset,
the resource block used by each time slot group during frequency hopping is determined according to the resource block indication information, and the method comprises the following steps:
and when the terminal equipment performs frequency hopping, the resource block used by the first time slot group is the starting resource block, and the resource blocks used by other time slot groups are the resource blocks shifted according to the frequency offset on the basis of the starting resource block.
3. The inter-slot frequency hopping method of claim 1, wherein the uplink information includes one of Physical Uplink Control Channel (PUCCH) information and Physical Uplink Shared Channel (PUSCH) information.
4. An inter-slot frequency hopping method, comprising:
a base station sends frequency hopping parameters to terminal equipment, wherein the frequency hopping parameters comprise quantity indication information of adjacent time slots contained in one time slot group and resource block indication information used by each time slot group during frequency hopping;
a base station sends a frequency hopping starting instruction so that the terminal equipment responds to the frequency hopping starting instruction, frequency hopping is carried out among all time slot groups according to the frequency hopping parameters, uplink information is transmitted, wherein a resource block used by each time slot group during frequency hopping is determined according to the resource block indication information, and the number of adjacent time slots contained in one time slot group during frequency hopping is determined according to the number indication information;
the base station carries out joint channel estimation on a plurality of adjacent time slots in each time slot group corresponding to the terminal equipment when the terminal equipment transmits uplink information;
and the base station demodulates the uplink information transmitted by the terminal equipment according to the result of the joint channel estimation.
5. The method of claim 4, wherein the resource block indication information includes a starting resource block and a frequency offset, so as to indicate that the resource block used by the first slot group is the starting resource block when the terminal device hops frequency, and the resource blocks used by other slot groups are resource blocks shifted by the frequency offset on the basis of the starting resource block.
6. The inter-slot frequency hopping method of claim 4, wherein the frequency hopping parameter is transmitted through Radio Resource Control (RRC) signaling.
7. The inter-slot frequency hopping method of claim 4, wherein the signaling for starting frequency hopping is transmitted through downlink control signaling (DCI) of a physical layer.
8. A terminal device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the inter-slot frequency hopping method of any of claims 1-3 based on instructions stored in the memory.
9. A base station, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the inter-slot frequency hopping method of any of claims 4-7 based on instructions stored in the memory.
10. An inter-slot frequency hopping system, comprising:
the terminal device of claim 8;
and
the base station of claim 9.
11. A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the inter-slot frequency hopping method of any one of claims 1 to 7.
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