CN108770064B - Time slot format configuration method, time slot format determination method, base station and user side equipment - Google Patents
Time slot format configuration method, time slot format determination method, base station and user side equipment Download PDFInfo
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- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses a configuration method and a determination method of a time slot format, a base station and user side equipment, wherein the configuration method of the time slot format comprises the following steps: when detecting that a channel is idle, acquiring channel occupation time; if the channel occupation time is not the situation of complete time slot occupation, sending an indication signaling to user side equipment according to a preset time slot format table, wherein the indication signaling comprises: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete slot. The invention can configure and determine the format of the incomplete time slot.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for configuring and determining a time slot format, a base station, and a user equipment.
Background
In New Radio technology (NR), a slot contains 14 symbols, and the slot format includes three types: one is 14 symbols full downlink (D), one is 14 symbols full uplink (U), and the other is 2 or 3 of three types including downlink (D) -uncertain (X) -uplink (U) in 14 symbols. In the NR grant spectrum, the timeslot Format supports semi-static configuration, which is given by Radio Resource Control (RRC) signaling, and the timeslot Format supports dynamic configuration at the same time, which is given by timeslot Format Indication (SFI) in Downlink Control Information (DCI) of Common (Group Common) or implicitly given by time domain scheduling Information (time domain scheduling Information) in DCI signaling of user equipment specific (specific).
In the NR unlicensed spectrum, it is impossible to predict in advance whether the channel is idle due to the uncertainty of the channel, and detecting whether the channel is idle is affected by the channel condition and the channel detection parameter, and it may occur that the channel is detected to be idle, and the channel is exactly in the middle of a slot (slot) rather than at the boundary (boundary) of the slot, whereas the slot formats given in the existing schemes are formats including 14 symbols. In the unlicensed spectrum, when it is detected that the channel is idle, the first slot and the last slot of at least one slot included in the obtained channel occupation time may not be a complete slot. For example, as shown in the schematic diagram of the channel occupation time shown in fig. 1, the channel occupation time T is 2ms, the subcarrier interval is 30KHz, and in a normal case, 2ms includes 4 complete slots, but in fig. 1, the channel occupation start time is in the middle of slot #0, and the channel occupation time includes two incomplete slots before and after and three complete slots in the middle, whereas a slot format configuration method and a determination method for incomplete slots are not proposed in the prior art.
Disclosure of Invention
The embodiment of the invention provides a configuration method and a determination method of a time slot format, a base station and user side equipment, which can configure and determine the format of an incomplete time slot.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, a method for configuring a time slot format is provided, including:
when the channel is detected to be idle, acquiring the occupied time of the channel;
if the channel occupation time has the condition of incomplete time slot occupation, sending an indication signaling to user side equipment according to a preset time slot format table, wherein the indication signaling comprises: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete slot.
In a second aspect, a method for determining a slot format is provided, including:
receiving an indication signaling, wherein the indication signaling comprises: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot;
and determining the format of at least one incomplete time slot according to the format number information of the incomplete time slot.
In a third aspect, a base station is provided, which includes:
the acquisition module is used for acquiring the occupied time of the channel when the channel is detected to be idle;
a sending module, configured to send an indication signaling to a user side device according to a preset slot format table if the channel occupation time is occupied by an incomplete slot, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete slot.
In a fourth aspect, a user equipment is provided, including:
a receiving module, configured to receive an indication signaling, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot;
and the determining module is used for determining the format of at least one incomplete time slot according to the format number information of the incomplete time slot.
In the embodiment of the invention, the indication signaling sent to the user side equipment comprises at least one piece of format indication information of an incomplete time slot, and can indicate the format of the incomplete time slot, so that the user side equipment can determine the format of the incomplete time slot, thereby reducing the energy consumption brought by the detection of DCI signaling by the user side equipment in an uplink slot or symbol, and facilitating the user side equipment to use uplink license-free to send data after knowing a downlink (UL) slot or symbol, thereby improving the uplink sending opportunity and reducing the uplink sending time delay.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the channel occupancy time provided by the present invention;
fig. 2 is a configuration method of a time slot format according to an embodiment of the present invention;
fig. 3 is a method for determining a timeslot format according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
Detailed Description
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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
NR defines 8 bits to indicate slot formats, and 256 slots in total, and 56 slots are defined in the current slot format table, as shown in table 1 below, where format numbers 0-55 are defined and format numbers 56-255 are Reserved (Reserved) for subsequent use. Included in table 1 are: a slot format of full downlink (D) (e.g., slot No. 0), a slot format of full uplink (U) (e.g., slot No. 1), and a slot format containing two or three of D-X-U (e.g., slot No. 44). It should be noted that, for slot formats containing two or three of the three types of D-X-U, the order of D-X-U is limited, for example, if the first symbol is U, the following symbols are unlikely to have D or X.
Table 1 existing slot format table
Fig. 2 is a configuration method of a timeslot format according to an embodiment of the present invention, and as shown in fig. 2, the method may include:
The number of symbols of the incomplete time slot is less than that of the complete time slot, in other words, the number of symbols of the incomplete time slot is less than 14.
The method for configuring the slot format provided in the embodiment of the present invention includes, in an indication signaling sent to a user side device, format indication information of at least one incomplete slot, and can indicate a format of the incomplete slot, thereby reducing energy consumption caused by detecting a DCI signaling in an uplink slot or symbol by the user side device, and facilitating the user side device to send data using an uplink grant-free after knowing a downlink (UL) slot or symbol, thereby improving an uplink transmission opportunity and reducing an uplink transmission delay.
Preferably, the format indication information of the incomplete time slot may further include: the number of symbols of the incomplete time slot, or the number of symbols of the incomplete time slot and the start position or the end position of the incomplete time slot.
Illustratively, if the channel occupation time is occupied by an incomplete timeslot, for example, if the channel occupation time is occupied starting in the middle of a complete timeslot or occupied ending in the middle of a complete timeslot, for example, as shown in fig. 1, an indication signaling is sent to the ue according to a preset timeslot format table, where the indication signaling at least includes: format indication information of slot #0 and format indication information of slot # 4.
It should be noted that the content of the format number information of the incomplete time slot is the same as the content of the format number information of the complete time slot in the prior art, for example, the content may be an index (index) of the format number, and the embodiment of the present invention is not described in detail here.
Fig. 3 is a method for determining a slot format according to an embodiment of the present invention, and as shown in fig. 3, the method may include:
The number of symbols of the incomplete time slot is less than that of the complete time slot, in other words, the number of symbols of the incomplete time slot is less than 14.
Illustratively, for example, in the case shown in fig. 1, the format of slot #0 and the format of slot #4 are determined according to the format indication information of slot #0 and the format indication information of slot # 4.
In the method for determining a slot format provided in the embodiment of the present invention, the indication signaling received by the user side device includes format indication information of at least one incomplete slot, which can indicate a format of the incomplete slot, thereby reducing energy consumption caused by detecting a DCI signaling at an uplink slot or symbol by the user side device, and facilitating the user side device to transmit data using uplink grant-free after knowing a downlink (UL) slot or symbol, thereby improving an uplink transmission opportunity and reducing an uplink transmission delay.
In an embodiment of the present invention, the preset slot format table is the same as table 1, that is, the preset slot format table includes format numbers of a plurality of complete slots and corresponding complete slot format symbol information. In this way, the format of the incomplete slot can be indicated using the existing slot format table. Starting positions or ending positions of starting the incomplete time slot and ending the incomplete time slot are preset, and then the format indication information of the incomplete time slot further comprises: number of symbols of the incomplete slot. The user side equipment can determine the format of the incomplete time slot according to the format number indicated by the format number information of the incomplete time slot, the symbol number of the combined incomplete time slot and the starting position or the ending position of the preset starting incomplete time slot and ending incomplete time slot. Illustratively, the format number indicated by the format number information of the incomplete time slot is the format 44 in table 1, the number of symbols is 12, and the preset starting position of starting the incomplete time slot is the symbol 0, then the format of the time slot #0 shown in fig. 1 is DDDDDDXXXXXX. Illustratively, if the format number indicated by the format number information of the incomplete time slot is format 44 in table 1, the number of symbols is 12, and the preset starting position for ending the incomplete time slot is symbol 13, then the format of the time slot #4 shown in fig. 1 is ddddxxxxxxxuu. In another embodiment of the present invention, the incomplete time slot format indication information may include a start position or an end position of the incomplete time slot in addition to the number of symbols of the incomplete time slot. Illustratively, the format number indicated by the format number information of the incomplete time slot is the format 44 in table 1, the number of symbols is 12, and the starting position is symbol 1, then the format of the time slot #4 shown in fig. 1 is terminal ddddxxxxxu.
In an embodiment of the present invention, a preset slot format table of the present invention is different from table 1, where the preset slot format table includes format numbers of a plurality of complete slots and corresponding complete slot format symbol information, and at least one incomplete slot format number and corresponding incomplete slot format symbol information. Therefore, the format of the incomplete time slot can be separately defined, which is convenient for defining more formats of the incomplete time slot, and when the defined format of the incomplete time slot is enough, the number of symbols indicating the incomplete time slot and the starting position or the ending position of the incomplete time slot can be omitted, which is convenient for indicating signaling and is convenient for the user side equipment to quickly determine the format of the incomplete time slot.
Specifically, at least one incomplete time slot format number and corresponding incomplete time slot format symbol information occupy at least one corresponding position in format numbers 56-255. For example, the preset slot format table includes slot format numbers 0 to 55 in table 1 above and corresponding full slot format symbol information, format number 56 and corresponding non-full slot format symbol information, and format number 57 and corresponding non-full slot format symbol information, format number 58 and corresponding non-full slot format symbol information. Illustratively, the format indication information of the incomplete time slot includes: format number information of the incomplete time slot, and the format number indicated by the format number information of the incomplete time slot is a format number 57. Illustratively, the format indication information of the incomplete time slot further includes the number of symbols of the incomplete time slot. The user side equipment can determine the format of the incomplete time slot according to the format number indicated by the format number information of the incomplete time slot, the symbol number of the combined incomplete time slot and the starting position or the ending position of the preset starting incomplete time slot and ending incomplete time slot. For example, the format number indicated by the format number information of the incomplete time slot is the format 57, the number of symbols is 2, and the preset starting position of starting the incomplete time slot is the symbol 0, the format of the time slot #0 shown in fig. 1 may be determined. In another embodiment of the present invention, the format indication information of the incomplete time slot may include a start position or an end position of the incomplete time slot in addition to the number of symbols of the incomplete time slot. Illustratively, the format number indicated by the format number information of the incomplete slot is the format 57, the number of symbols is 2, and the starting position is the symbol 1, then the format of the slot #4 shown in fig. 1 can be determined.
In another embodiment of the present invention, the preset slot format table of the present invention is different from table 1 above, and the preset slot format table may include: the system comprises a complete time slot table and an incomplete time slot table, wherein the complete time slot table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and the incomplete time slot table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information. Specifically, the complete slot table may be table 1, and the incomplete slot table is a table similar to table 1 but including at least one format number of the incomplete slot format and corresponding symbol information of the incomplete slot format. Therefore, the format of the incomplete time slot can be separately defined, more formats of the incomplete time slot can be conveniently defined, when the defined format of the incomplete time slot is enough, the number of symbols indicating the incomplete time slot and the starting position or the ending position of the incomplete time slot can be omitted, the signaling can be conveniently sent, and the user side equipment can conveniently and quickly determine the format of the incomplete time slot.
Preferably, the incomplete slot format symbol information does not belong to a subset of a plurality of complete slot format symbol information and other incomplete slot format symbol information. In other words, the incomplete slot format symbol information does not belong to the subset of complete slot format symbol information corresponding to format numbers 0-55, and the incomplete slot format symbol information does not belong to the subset of other incomplete slot format symbol information. Therefore, more time slot formats can be recorded by utilizing the existing time slot format table, and the optimization management of storage resources is facilitated.
It should be noted that, the non-full slot format symbol information includes two or three of three types of symbols including D-X-U, and the sequence of D-X-U is limited in the same manner as the existing sequence of D-X-U.
The symbol number of the incomplete time slot may be indicated by 4 bits.
In an embodiment of the present invention, the coincidence number of the incomplete time slot and the start position/end position of the incomplete time slot may be indicated by 4 bits respectively; in another embodiment of the present invention, the coincidence number of the incomplete time slot and the start position/end position of the incomplete time slot may be jointly indicated by using 4 bits, so as to reduce the number of bits occupied by the indication signaling.
Fig. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in fig. 4, the base station may include:
an obtaining module 41, configured to obtain a channel occupation time when it is detected that a channel is idle;
a sending module 42, configured to send an indication signaling to the ue according to a preset slot format table if the channel occupation time is occupied by an incomplete slot, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete slot.
The number of symbols of the incomplete time slot is less than that of the complete time slot, in other words, the number of symbols of the incomplete time slot is less than 14.
In an embodiment of the present invention, the preset slot format table includes format numbers of a plurality of complete slots and corresponding complete slot format symbol information.
In an embodiment of the present invention, the preset time slot format table includes format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and a format number of at least one incomplete time slot and corresponding incomplete time slot format symbol information; or,
the preset time slot format table comprises: the system comprises a complete time slot table and an incomplete time slot table, wherein the complete time slot table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and the incomplete time slot table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information.
In an embodiment of the invention, the incomplete slot format symbol information does not belong to a subset of the plurality of complete slot format symbol information and other incomplete slot format symbol information.
In an embodiment of the present invention, the format indication information of the incomplete time slot further includes: the number of symbols of the incomplete time slot, or the number of symbols of the incomplete time slot and the start position or the end position of the incomplete time slot.
The base station provided in the embodiment of the present invention can implement each process implemented by the base station in the method embodiment of fig. 2, and is not described here again to avoid repetition. The base station provided by the invention can indicate the format of the incomplete time slot by the indication signaling sent to the user side equipment, thereby reducing the energy consumption caused by detecting the DCI signaling in the uplink slot or symbol by the user side equipment, and being convenient for the user side equipment to use the uplink license-free data transmission after knowing the downlink (UL) slot or symbol, thereby improving the uplink transmission opportunity and reducing the uplink transmission time delay.
Fig. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in fig. 4, the user-side device may include:
a receiving module 51, configured to receive an indication signaling, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot;
and the determining module 52 is configured to determine a format of at least one incomplete time slot according to the format number information of the incomplete time slot.
The number of symbols of the incomplete time slot is less than that of the complete time slot, in other words, the number of symbols of the incomplete time slot is less than 14.
The user-side device may specifically be a mobile terminal or the like.
The user side device provided in the embodiment of the present invention can implement each process implemented by the user side device in the method embodiment of fig. 3, and is not described here again to avoid repetition. According to the user side equipment provided by the invention, the indication signaling received by the user side equipment comprises the format indication information of at least one incomplete time slot, and the format of the incomplete time slot can be indicated, so that the energy consumption caused by detecting the DCI signaling in an uplink slot or symbol by the user side equipment is reduced, and the user side equipment can conveniently use the uplink license-free to transmit data after knowing the downlink (UL) slot or symbol, thereby improving the uplink transmission opportunity and reducing the uplink transmission time delay.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for configuring a slot format, comprising:
when detecting that a channel is idle, acquiring channel occupation time;
if the channel occupation time has the condition of incomplete time slot occupation, sending an indication signaling to user side equipment according to a preset time slot format table, wherein the indication signaling comprises: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot;
the preset time slot format table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and a format number of at least one incomplete time slot and corresponding incomplete time slot format symbol information; or,
the preset time slot format table comprises: the system comprises a complete time slot table and an incomplete time slot table, wherein the complete time slot table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and the incomplete time slot table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information.
2. The method of claim 1, wherein the non-full slot format symbol information does not belong to a subset of the plurality of full slot format symbol information and other non-full slot format symbol information.
3. The method of claim 1, wherein the format indication information of the incomplete time slot further comprises: the number of symbols of the incomplete time slot, or the number of symbols of the incomplete time slot and the start position or the end position of the incomplete time slot.
4. A method for determining a slot format, comprising:
receiving an indication signaling and a preset time slot format table, wherein the indication signaling comprises: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot; the preset time slot format table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information;
and determining the format of at least one incomplete time slot according to the format number information of the incomplete time slot.
5. A base station, comprising:
an obtaining module, configured to obtain a channel occupation time when it is detected that a channel is idle;
a sending module, configured to send an indication signaling to a user side device according to a preset slot format table if the channel occupation time is occupied by an incomplete slot, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot;
the preset time slot format table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and a format number of at least one incomplete time slot and corresponding incomplete time slot format symbol information; or,
the preset time slot format table comprises: the system comprises a complete time slot table and an incomplete time slot table, wherein the complete time slot table comprises format numbers of a plurality of complete time slots and corresponding complete time slot format symbol information, and the incomplete time slot table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information.
6. The base station of claim 5, wherein the non-full slot format symbol information does not belong to a subset of the plurality of full slot format symbol information and other non-full slot format symbol information.
7. The base station of claim 5, wherein the format indication information of the incomplete time slot further comprises: the number of symbols of the incomplete time slot, or the number of symbols of the incomplete time slot and the start position or the end position of the incomplete time slot.
8. A user-side device, comprising:
a receiving module, configured to receive an indication signaling and a preset time slot format table, where the indication signaling includes: format indication information of at least one incomplete time slot, the format indication information of the incomplete time slot comprising: format number information of the incomplete time slot; the preset time slot format table comprises at least one format number of an incomplete time slot and corresponding incomplete time slot format symbol information;
and the determining module is used for determining the format of at least one incomplete time slot according to the format number information of the incomplete time slot.
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| WO2020113589A1 (en) * | 2018-12-07 | 2020-06-11 | 华为技术有限公司 | Storage method and device for slot formats |
| CN113261379B (en) * | 2019-01-10 | 2022-09-16 | 华为技术有限公司 | Data transmission method and device |
| EP3735799B1 (en) * | 2019-01-10 | 2024-05-29 | Nokia Technologies Oy | New physical downlink control channel design |
| WO2021097687A1 (en) * | 2019-11-19 | 2021-05-27 | Oppo广东移动通信有限公司 | Method for determining time domain resources, device, and terminal apparatus |
| EP4094510A4 (en) * | 2020-01-25 | 2023-11-01 | Qualcomm Incorporated | Complexity reduction for slot format determination |
| CN111557113B (en) * | 2020-04-07 | 2023-09-19 | 北京小米移动软件有限公司 | Indication method, device, communication equipment and storage medium for transmitting data |
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