CN113141630A - Resource reservation method and terminal - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Abstract
The embodiment of the invention provides a resource reservation method and a terminal, wherein the resource reservation method comprises the following steps: and reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate. In the embodiment of the invention, the resource occupancy rate is defined, and is related to the reserved but unused resources, so that the terminal can count the information of the reserved but unused resources, and the terminal is prevented from excessively reserving the resources, thereby balancing the transmission reliability of the terminal and the throughput of the system.
Description
Technical Field
The embodiment of the invention relates to the technical field of wireless communication, in particular to a resource reservation method and a terminal.
Background
A Long Term Evolution (LTE) system supports sidelink (sidelink, or translated into sidelink, or side link, etc.) from the 12 th release version, and is used for performing direct data transmission between terminal User equipments (UEs, hereinafter referred to as terminals) without using a network device.
The design of the LTE sidelink is suitable for specific public safety affairs (emergency communication in disaster places such as fire places or earthquakes), vehicle to internet (V2X) communication and the like. The internet of vehicles communication includes various services, such as basic security type communication, advanced (automated) driving, formation, sensor expansion, and the like. Since LTE sidelink only supports broadcast communication, it is mainly used for basic security communication, and other advanced V2X services with strict Quality of Service (QoS) requirements in terms of delay, reliability, etc. will be supported by New Radio (NR) sidelink.
In the existing R16V 2X, a resource reservation mechanism is defined, that is, a Transport Block (TB) currently transmitted can reserve resources for a subsequent TB, but how to count the use condition of the reserved resources to avoid excessive reservation of resources by a terminal so as to balance the reliability of terminal transmission and the throughput of a system is a technical problem to be solved at present.
Disclosure of Invention
The embodiment of the invention provides a resource reservation method and a terminal, which are used for counting the use condition of reserved resources, avoiding excessive reservation of the resources by the terminal, and balancing the transmission reliability of the terminal and the throughput of a system.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a resource reservation method, applied to a terminal, including: and reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate, wherein the resource occupancy rate is related to reserved but unused resources.
In a second aspect, an embodiment of the present invention provides a terminal, including:
and the processing module is used for reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate, wherein the resource occupancy rate is related to reserved but unused resources.
In a third aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the resource reservation method in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the resource reservation method of the first aspect.
In the embodiment of the invention, the resource occupancy rate is defined, and can represent the proportion of the reserved but unused resources, so that the terminal can count the information of the reserved but unused resources, the excessive reservation of the resources by the terminal is avoided, the waste of the resources by the terminal is limited, the influence of system congestion caused by the excessive reservation of the resources by the terminal is reduced, and the transmission reliability of the terminal and the throughput of the system are balanced.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a resource reservation method according to an embodiment of the present invention;
fig. 3 is a schematic view of an application scenario of a resource reservation method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
Detailed Description
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Embodiments of the present invention are described below with reference to the accompanying drawings. The resource reservation method and the terminal provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may adopt a 5G system, or an Evolved Long Term Evolution (lte) system, or a subsequent Evolved communication system.
Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: the terminal 12 may be connected to the network-side device 11 through an uplink (uplink) link and a downlink (downlink) link, and the terminals 12 may be connected to each other through a sidelink link.
The embodiment of the invention is mainly applied to the scene of the connection between the terminals through the side link.
The terminal 12 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), a vehicle, or a Road Side Unit (RSU), and the like. Those skilled in the art will recognize that the words are not limiting.
Currently, a channel occupancy rate (CR) is defined for counting the proportion of resources configured in a measurement time (for example, 1000ms or 1000 slots) of resources used before a measurement time and resources reserved after the measurement time, so as to count the usage of the reserved resources by a terminal.
In LTE, the channel occupancy is defined as the ratio of the number of subchannels already used before a TB measurement time and the number of resources reserved after the measurement time to the total number of configured subchannels, with 1000 subframes as a period. Making a measurement in subframe n, measuring n-a, n-1]The number of sub-frames occupied by the transmission and in [ n, n + b ]]The sum of the number of resources that have been reserved in the range, divided by the sum of the number of resources that have been reserved in [ n-a, n + b ]]The number of subframes of the configuration within. Wherein a + b +1 is 1000. When the measured CR value is greater than the preconfigured CRlimitThe processing mode depends on the UE implementation and includes dropping the transmission, which can avoid the TB occupying too much resources.
Based on the current statistical methods, it may result in the terminal reserving too many resources. For example: assumed to be in accordance with CRlimitOne terminal is at [ n-a, n + b ]]Can transmit + the total number of reserved resources is 20. Assuming that the terminal makes measurements at time n, [ n-a, n-1]]The used resources are 10, if 10 resources are reserved continuously from n +1 to n +10, the terminal respectively transmits data at n +2 and n +4, and when the measurement is carried out at n +5, [ n-a, n +5-1 ]]The number of resources used in the system is 12, [ n +5, n + b ]]The number of resources reserved in the slot is 5, and the measured CR value is 17 slots, i.e. the number of used subchannels/total number of configured subchannels, and it is considered that the CR is not reachedlimit(corresponding to the number of subchannels of 20 slots), so at time n +5, the terminal considers that it can make further reservations. The terminals are reserved but not used in the past, and other terminals are assumed to be used based on the reserved resources when detecting, so that some terminals excessively reserve resources, and the system is congested.
To solve the above problem, please refer to fig. 2, where fig. 2 is a schematic flow chart of a resource reservation method according to an embodiment of the present invention, and the resource reservation method is applied to a terminal and includes:
step 21: and reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate, wherein the resource occupancy rate is related to reserved but unused resources.
In the embodiment of the invention, the resource occupancy rate is defined and is related to the reserved but unused resources, so that the terminal can count the information of the reserved but unused resources, the excessive reservation of the resources by the terminal is avoided, the waste of the resources by the terminal is limited, the influence of system congestion caused by the excessive reservation of the resources by the terminal is reduced, and the transmission reliability of the terminal and the throughput of the system are balanced.
The concept of resource occupancy is predefined.
The threshold value corresponding to the resource occupancy rate is a predefined, preconfigured or configured value.
In the embodiment of the present invention, the configuration manner of the threshold value of the resource occupancy rate adopts at least one of the following:
each terminal (per UE) corresponds to a respective threshold value;
each HARQ process (per HARQ process) corresponds to a respective threshold value;
each TB (per TB) corresponds to a respective threshold value;
each resource pool (per resource pool) corresponds to a respective threshold value;
each priority (per priority /) corresponds to a respective threshold value;
each logical channel (per LCH) corresponds to a respective threshold value;
each logical channel group (per LCH group) corresponds to a respective threshold value;
each channel busy rate range (per CBR range) corresponds to a respective threshold value.
In some embodiments of the present invention, the threshold is one, and the performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when the measured resource occupancy rate is larger than or equal to the threshold value, stopping reserving the extra resources after the n + L time; wherein L is a value of 0 or more.
By stopping reservation of resources is meant stopping reservation of more resources, the previously reserved resources still being in effect.
Ceasing to reserve additional resources may be ceasing to reserve additional resources within the resource pool in which the SCI resides.
Alternatively, the stopping of reserving the additional resources may be stopping of reserving resources in any one of the resource pools.
In some embodiments of the present invention, the threshold is multiple, and the performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when the measured resource occupancy rate is greater than or equal to the maximum value in the threshold values, stopping reserving the extra resources after the n + L time; wherein L is a value of 0 or more.
In some embodiments of the present invention, the threshold is multiple, and the performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is larger than the maximum value in the threshold values, stopping reserving the extra resources after the n + L time; wherein L is a value of 0 or more.
In some embodiments of the present invention, the threshold is multiple, and the performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is greater than the middle value in the threshold value, the number of resources which can be reserved by the terminal is further reduced, and/or the reservation interval between the reserved resources is further increased;
when the measured resource occupancy rate is larger than the maximum value in the threshold values, stopping reserving the extra resources after the n + L time; wherein L is a value of 0 or more.
Wherein the intermediate value is at least one.
The reservation intervals or the relationship between different reservation intervals is predefined, pre-configured or configured.
In the embodiment of the present invention, the resource occupancy may include multiple types, which are described below separately.
Firstly, the resource occupancy rate comprises: occupancy rate of Unused Reserved resources (URCR)
The occupancy rate of the unused reserved resource is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
Assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and the time unit of the measurement window is a time slot;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
occupancy of the unused reserved resource [ n-a, n-1/2 ═μ]Number of unused reserved resources/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol. The concept of the occupancy of unused reserved resources is predefined.
At the same time, it is also necessary to predefine, pre-configure or configure a threshold value urc for the occupancy of at least one unused reserved resourcelimit。
In the embodiment of the present invention, the configuration manner of the threshold value of the occupancy rate of the unused reserved resource adopts at least one of the following:
each terminal (per UE);
each HARQ process (per HARQ process);
each TB (per TB);
each resource pool (per resource pool);
each priority (per priority /);
each logical channel (per LCH);
each logical channel group (per LCH group);
per channel busy rate range (per CBR range).
In some embodiments of the invention, the URCRlimitFor one, the resource reservation according to the measured resource occupancy rate and at least one threshold corresponding to the resource occupancy rate includes:
when the measured URCR is greater than or equal to URCRlimitAfter the time n + L, stopping reserving the extra resources; wherein L is a value of 0 or more.
By stopping the reservation of additional resources is meant stopping the reservation of more resources, the previously reserved resources still being in effect.
In some embodiments of the invention, the URCRlimitThe resource reservation according to the measured resource occupancy rates and at least one threshold value corresponding to the resource occupancy rates comprises:
when the measured URCR is greater than or equal to URCRlimitAfter the time n + L, stopping reserving the extra resources; wherein L is a value of 0 or more.
In some embodiments of the present invention, the threshold is multiple, and performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when the measured URCR is greater than URCRlimitWhen the number of the resources which can be reserved by the terminal is smaller than the minimum value, and/or the reservation interval between the reserved resources is increased;
when the measured URCR is greater than URCRlimitWhen the maximum value is in the range, stopping reserving extra resources after the time of n + L; wherein L is a value of 0 or more.
In some embodiments of the invention, the URCRlimitThe resource reservation according to the measured resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate includes:
when the measured URCR is greater than URCRlimitAt the minimum value of (a), reducing the number of resources that the terminal can reserve (for example, reserving only N-delta resources), and/or increasing the reservation interval between reserved resources (for example, two resource reservation intervals are T + beta);
when the measured URCR is greater than URCRlimitFurther decreasing the number of resources that the terminal can reserve (e.g., only reserving N-2 × delta resources), and/or further increasing the reservation interval between reserved resources (e.g., two resource reservation intervals T +2 × beta);
when the measured URCR is greater than URCRlimitWhen the maximum value is reached, stopping reserving the extra resources;
wherein the intermediate value is at least one.
The reservation of additional resources, i.e. no more resources than already reserved in the range of n, n + b, is stopped.
The reservation intervals or the relationship between different reservation intervals is predefined, pre-configured or configured.
Secondly, the resource occupancy rate comprises: terminal Total channel occupancy (TCR)
1. In some embodiments of the present invention, the terminal total channel occupancy (TCR) is (number of used resources within the measurement window + number of reserved resources within the measurement window after the measurement time + number of unused reserved resources within the measurement window before the measurement time)/total number of resources configured within the measurement window.
Assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and the time unit of the measurement window is a time slot;
the terminal total channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of unused reserved resources in [ n, n + b ] + [ the number of unused reserved resources in n-a, n-1 ])/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the total occupancy rate of the terminal is ([ n-a, n-1/2)μ]The number of used resources + [ n, n + b ]]Number of unused reserved resources within + [ n-a, n-1/2 ]μ]Number of unused reserved resources within)/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the terminal total channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of unused reserved resources in [ n, n + b ] + [ the number of unused reserved resources in n-a, n-1 ])/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol.
2. In some embodiments of the invention, the resource occupancy comprises: a terminal total channel occupancy (TCR), which is an occupancy of unused reserved resources (URCR) + a channel occupancy (CR);
wherein, the channel occupancy (CR) is (number of used resources within a measurement window + number of reserved resources after a measurement time within the measurement window)/total number of resources configured within the measurement window;
the occupancy rate (URCR) of the unused reserved resource is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
Assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and the time unit of the measurement window is a time slot;
the channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of reserved resources in n, n + b ])/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the channel occupancy is ([ n-a, n-1/2)μ]The number of used resources + [ n, n + b ]]Number of resources reserved therein)/total number of resources configured within the measurement window;
occupancy of the unused reserved resource [ n-a, n-1/2 ═μ]Number of unused reserved resources/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of reserved resources in n, n + b ])/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol.
The concept of the total channel occupancy of the terminal is predefined.
At the same time, it is also necessary to predefine, preconfigurate or configure at least one threshold value TCR of the total channel occupancy of the terminallimit。
In the embodiment of the present invention, the configuration manner of the threshold value of the total channel occupancy rate of the terminal adopts at least one of the following:
each terminal (per UE);
each HARQ process (per HARQ process);
each TB (per TB);
each resource pool (per resource pool);
each priority (per priority /);
each logical channel (per LCH);
each logical channel group (per LCH group);
per channel busy rate range (per CBR range).
In some embodiments of the invention, the TCRlimitFor one, the resource reservation according to the measured resource occupancy rate and at least one threshold corresponding to the resource occupancy rate includes:
when measured TCR greater than or equal to TCRlimitAfter the time n + L, stopping reserving the extra resources; wherein L is a value of 0 or more.
By stopping the reservation of additional resources is meant stopping the reservation of more resources, the previously reserved resources still being in effect.
In some embodiments of the invention, the TCRlimitThe resource reservation according to the measured resource occupancy rates and at least one threshold value corresponding to the resource occupancy rates comprises:
when measured TCR greater than or equal to TCRlimitAfter the time n + L, stopping reserving the extra resources; wherein L is a value of 0 or more.
In some embodiments of the present invention, the threshold is multiple, and performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
when measured TCR greater than TCRlimitWhen the number of the resources which can be reserved by the terminal is smaller than the minimum value, and/or the reservation interval between the reserved resources is increased;
when measured TCR greater than TCRlimitWhen the maximum value is in the range, stopping reserving extra resources after the time of n + L; wherein L is a value of 0 or more.
In some embodiments of the invention, a TCRlimitThe resource reservation according to the measured resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate includes:
when measured TCR greater than TCRlimitAt the minimum value of (a), reducing the number of resources that the terminal can reserve (for example, reserving only N-delta resources), and/or increasing the reservation interval between reserved resources (for example, two resource reservation intervals are T + beta);
when measured TCR greater than TCRlimitFurther decreasing the number of resources that the terminal can reserve (e.g., only reserving N-2 × delta resources), and/or further increasing the reservation interval between reserved resources (e.g., two resource reservation intervals T +2 × beta);
when measured TCR greater than TCRlimitAfter the time n + L, the reservation of additional resources is stoppedA source; wherein L is a value of 0 or more;
wherein the intermediate value is at least one.
The reservation intervals or the relationship between different reservation intervals is predefined, pre-configured or configured.
In the above embodiment, the number of resources reserved in [ n, n + b ] is reserved resources indicated in Sidelink Control Information (SCI), or reserved resources selected for higher layers.
The terminal transmits the SCI over a Physical Sidelink Control Channel (PSCCH) and schedules transmission of a Physical Sidelink Shared Channel (PSCCH) to transmit data.
For one TB, the reserved resources are indicated by SCIs, and the maximum number of resources that can be reserved per SCI is Nmax, where the maximum value of Nmax is 3. Nmax is a configurable value for each resource pool (resource pool), and is optionally 2 or 3. Further, the number of transmissions of one TB is unlimited in mode 1(mode1), depending on the base station scheduling. One TB (including blind retransmission mode and HARQ-based retransmission mode) the maximum number is 32 in mode 2(mode 2). In particular RRC (pre-) configured values. The RRC configures a maximum number of transmissions per resource pool, per transmission, per Channel Busy Rate (CBR) range, per priority.
Higher layers may have selected more than Nmax resources (e.g., 6) based on detection/re-evaluation (sensing/re-evaluation), and one SCI may only indicate two resources. Based on the definition of LTE, this is partly not considered within the scope of resource occupancy, as granted (granted) resources.
In the above embodiment, the value of a satisfies at least one of the following conditions:
1) greater than a1, where a1 is T0 x alpha, T0 is the length of the detection window, alpha is a coefficient in the range of 0 to 1; or, a1 is T0 x alpha when the length of the detection window T0>1000ms, a1 is a predefined, preconfigured or configured value when the length of the detection window T0<1000 ms;
2)a/TCR_measureis greater than a 1%,TCR_measurefor the length of the measurement window, a 1% is a predefined, preconfigured or configured value.
The terminal detects SCI in the window, judges whether the resource is available according to the detection result, and selects the resource.
In the above embodiment, the value of b satisfies at least one of the following conditions:
1) greater than B1, B1 is a predefined, preconfigured, or configured value;
2)b/TCR_measurea value of greater than b 1%, TCR_measureFor the length of the measurement window, b 1% is a predefined, preconfigured or configured value;
3) associated with the range that the SCI of the currently transmitted TB can indicate, optionally, less than 32 slots;
4) b is valued so that n + b does not exceed the last resource selected by the currently transmitted TB or the last resource selected by the terminal; wherein, the selected resources comprise the resources indicated by SCI and the resources reserved by the terminal high layer; it should be noted that the resources reserved by the higher layer but not indicated by the SCI are known by the terminal itself, but are not broadcasted. If the segment considers that the part of resources are to be reserved in the future, the re-evaluation is not required to be repeated, and when the reserved resources are in a window of 32slots, the SCI is sent to indicate the resources directly.
5) The lesser of the two: 32slots, the interval of the current measurement time to the slot of the last resource reserved.
In the embodiment of the present invention, the unit of the number of the resources is one of the following: sub-channels, physical resource blocks, resource units, slots, symbols, subframes, milliseconds, frames.
In the embodiment of the present invention, optionally, the parameters (a, B, a1, a 1%, B1, B1, T)CR_measureAny one or more of the following) is employed:
each terminal (per UE);
each HARQ process (per HARQ process);
each TB (per TB);
each resource pool (per resource pool);
each priority (per priority /);
each logical channel (per LCH);
each logical channel group (per LCH group);
per channel busy rate range (per CBR range).
The resource reservation method according to the embodiment of the present invention is described below by way of example with reference to specific application scenarios.
The first embodiment of the invention:
please refer to fig. 3, predefining a>500. Measuring the length T of the windowCR_measureA + b +1 is 1000 slots. The terminal selects the values of a and b such that the value of n + b does not exceed the last resource reserved by the TB.
Threshold value TCR of pre-configured terminal resource occupancy ratelimit.＝0.2。
CR is defined as the proportion of the sum of the number of sub-channels used by the terminal in [ n-a, n-1] and the number of sub-channels reserved in [ n, n + b ] to the total number of sub-channels configured in the measurement window at the time n.
The unused occupancy rate URCR of reserved resources is defined as the ratio of the number of unused reserved sub-channels of the terminal in [ n-a, n-1] to the total number of sub-channels configured in the measurement window at time n.
The total terminal channel occupancy TCR is defined as CR + URCR.
At time n, the value of TCR is measured according to the above rule:
if TCR is measured>＝TCRlimitAssuming that the measured TCR is 0.25, the reservation of additional resources is stopped after n + 4.
Otherwise, if the resource selection/reselection is triggered, the resources can be further reserved.
Embodiment two of the present invention:
predefining a>525. Measuring the length T of the windowCR_measureA + b +1 is 1000 time slots. The terminal selects the values of a and b to ensure that the value of n + b does not exceed the last resource reserved by the TBA source.
Threshold value TCR of pre-configured terminal resource occupancy ratelimit。
Defining TCR as the proportion of the sum of the number of used sub-channels and the number of reserved resources of the terminal in [ n-a, n + b ] to the total number of sub-channels configured in the measurement window at the time n.
At time n, the value of TCR is measured according to the above rules;
if TCR>＝TCRlimitThe additional reserved resources are stopped.
Otherwise, if the resource selection/reselection is triggered, the resources can be further reserved.
The third embodiment of the invention:
predefining a>525. Measuring the length T of the windowCR_measureA + b +1 is 1000 time slots. The terminal selects the values of a and b and guarantees that the value of n + b does not exceed the last resource reserved by the TB.
Pre-configured terminal unused reserved resource occupancy rate threshold URCRlimit。
And defining the unused occupancy rate URCR of the reserved resources as the proportion of the number of unused reserved sub-channels of the terminal in [ n-a, n-1] to the total number of sub-channels configured in the measurement window at the time n.
At time n, the value of URCR is measured according to the above rule:
if URCR>＝URCRlimitThen the reservation of additional resources is stopped.
Otherwise, if the resource selection/reselection is triggered, the resources can be further reserved.
The fourth embodiment of the present invention:
predefining a>525. Measuring the length T of the windowCR_measureA + b +1 is 1000 time slots. The terminal selects the values of a and b to ensure that the value of n + b does not exceed the last resource reserved by the TB.
Pre-configured terminal unused reserved resource occupancy rate threshold URCRlimit＝0.02,0.04,0.1。
The unused occupancy rate URCR of reserved resources is defined as the ratio of the number of unused reserved sub-channels of the terminal in [ n-a, n-1] to the total number of sub-channels configured in the measurement time at time n.
At the time n, the URCR obtained by measurement and the resource occupancy rate threshold value URCR are judgedlimitThe relationship of (1):
if URCR > is equal to 0.1, the reservation of the extra resources is stopped.
Otherwise, if URCR >0.04, then either 2 resources are reserved or the two reserved resources are spaced by 20 slots.
Otherwise, if the URCR >0.01, 3 resources are reserved or the two reserved resources are spaced by 10 slots.
Otherwise, 4 resources are reserved or the interval between two reserved resources is 5 slots.
Referring to fig. 4, an embodiment of the present invention further provides a terminal 40, including:
the processing module 41 is configured to perform resource reservation according to the resource occupancy rate and at least one threshold corresponding to the resource occupancy rate, where the resource occupancy rate is related to a reserved but unused resource.
In the embodiment of the invention, the resource occupancy rate is defined, and can represent the proportion of the reserved but unused resources, so that the terminal can count the information of the reserved but unused resources, the excessive reservation of the resources by the terminal is avoided, the waste of the resources by the terminal is limited, the influence of system congestion caused by the excessive reservation of the resources by the terminal is reduced, and the transmission reliability of the terminal and the throughput of the system are balanced.
Optionally, the resource occupancy includes: and the occupancy rate of the unused reserved resources is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
Optionally, assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and a time unit of the measurement window is a time slot;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
occupancy of the unused reserved resource [ n-a, n-1/2 ═μ]Number of unused reserved resources/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol.
Optionally, the resource occupancy includes: and the terminal total channel occupancy rate is (the number of used resources in the measurement window + the number of reserved resources after the measurement time in the measurement window + the number of unused reserved resources before the measurement time in the measurement window)/the total number of resources configured in the measurement window.
Optionally, assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and a time unit of the measurement window is a time slot;
the terminal total channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of unused reserved resources in [ n, n + b ] + [ the number of unused reserved resources in n-a, n-1 ])/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the total occupancy rate of the terminal is ([ n-a, n-1/2)μ]Number of used resourcesMesh + [ n, n + b]Number of unused reserved resources within + [ n-a, n-1/2 ]μ]Number of unused reserved resources within)/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the terminal total channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of unused reserved resources in [ n, n + b ] + [ the number of unused reserved resources in n-a, n-1 ])/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol.
Optionally, the resource occupancy includes: the terminal total channel occupancy rate is the occupancy rate of unused reserved resources plus the channel occupancy rate;
wherein, the channel occupancy rate is (the number of used resources in the measurement window + the number of reserved resources after the measurement time in the measurement window)/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
Optionally, assuming that the measurement time is n, the measurement window is [ n-a, n + b ], and a time unit of the measurement window is a time slot;
the channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of reserved resources in n, n + b ])/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the channel occupancy is ([ n-a, n-1/2)μ]The number of used resources + [ n, n + b ]]Number of resources reserved therein)/total number of resources configured within the measurement window;
occupancy rate of the unused reserved resource is [ n-a, n-1/2 [ ]μ]Number of unused reserved resources/total number of resources configured within the measurement window.
Where μ is determined according to SCS (subcarrier spacing), when SCS is 15kHz, μ is 0; when SCS is 30kHz, μ ═ 1; when SCS is 60kHz, μ ═ 2; when SCS is 120kHz, μ ═ 3.
Alternatively, the first and second electrodes may be,
assuming that the measuring time is n, the measuring window is [ n-a, n + b ], and the time unit of the measuring window is millisecond;
the channel occupancy rate is ([ the number of used resources in [ n-a, n-1] + [ the number of reserved resources in n, n + b ])/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is equal to the number of unused reserved resources in [ n-a, n-1 ]/the total number of resources configured in the measurement window.
Of course, the time unit of the measurement window may be other, such as a symbol.
Optionally, the value of a satisfies at least one of the following conditions:
greater than a1, where a1 is T0 x alpha, T0 is the length of the detection window, alpha is a coefficient in the range of 0 to 1; or, a1 is T0 x alpha when the length of the detection window T0>1000ms, a1 is a predefined, preconfigured or configured value when the length of the detection window T0<1000 ms;
a/TCR_measurea value of greater than a 1%, TCR_measureFor the length of the measurement window, a 1% is a predefined, preconfigured or configured value.
Optionally, the value of b satisfies at least one of the following conditions:
greater than B1, B1 is a predefined, preconfigured, or configured value;
b/TCR_measurea value of greater than b 1%, TCR_measureFor the length of the measurement window, b 1% is a predefined, preconfigured or configured value;
related to the range that the SCI of the currently transmitted TB may indicate;
b is valued so that n + b does not exceed the last resource selected by the currently transmitted TB or the last resource selected by the terminal;
the lesser of the two: 32slots, the interval of the current measurement time to the slot of the last resource reserved.
Optionally, the number of the threshold is one, and the resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy includes:
and when the measured resource occupancy rate is greater than or equal to the threshold value, stopping reserving the extra resources after the n + L time, wherein L is a value greater than or equal to 0.
Optionally, the number of the threshold values is multiple, and the resource reservation according to the measured resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate includes:
when the measured resource occupancy rate is greater than or equal to the maximum value in the threshold values, stopping reserving additional resources after the time n + L, wherein L is a value greater than or equal to 0;
or
When the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is greater than the maximum value in the threshold values, stopping reserving additional resources after n + L time, wherein L is a value greater than or equal to 0;
or
When the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is greater than the middle value in the threshold value, the number of resources which can be reserved by the terminal is further reduced, and/or the reservation interval between the reserved resources is further increased;
when the measured resource occupancy rate is greater than the maximum value in the threshold values, stopping reserving additional resources after n + L time, wherein L is a value greater than or equal to 0;
wherein the intermediate value is at least one.
Optionally, the reservation intervals or the relationship between different reservation intervals is predefined, preconfigured or configured.
Optionally, the unit of the number of resources is one of the following: sub-channels, physical resource blocks, resource units, slots, symbols, subframes, milliseconds, frames.
Optionally, the configuration mode of the threshold value of the resource occupancy rate adopts at least one of the following:
each terminal corresponds to a respective threshold value;
each HARQ process corresponds to a respective threshold value;
each TB corresponds to a respective threshold value;
each resource pool corresponds to a respective threshold value;
each priority corresponds to a respective threshold value;
each logic channel corresponds to a respective threshold value;
each logic channel group corresponds to a respective threshold value;
each channel busy rate range corresponds to a respective threshold value.
The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiments of fig. 2 to fig. 3, and is not described herein again to avoid repetition.
Fig. 5 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 50 includes, but is not limited to: a radio frequency unit 51, a network module 52, an audio output unit 53, an input unit 54, a sensor 55, a display unit 56, a user input unit 57, an interface unit 58, a memory 59, a processor 510, and a power supply 511. Those skilled in the art will appreciate that the terminal configuration shown in fig. 5 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 510 is configured to perform resource reservation according to the measured resource occupancy rate and at least one threshold corresponding to the resource occupancy rate, where the resource occupancy rate is related to a reserved but unused resource.
In the embodiment of the invention, the resource occupancy rate is defined, and can represent the proportion of the reserved but unused resources, so that the terminal can count the information of the reserved but unused resources, the excessive reservation of the resources by the terminal is avoided, the waste of the resources by the terminal is limited, the influence of system congestion caused by the excessive reservation of the resources by the terminal is reduced, and the transmission reliability of the terminal and the throughput of the system are balanced.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 51 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 510; in addition, the uplink data is transmitted to the base station. Typically, the radio frequency unit 51 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 51 may also communicate with a network and other devices through a wireless communication system.
The terminal provides wireless broadband internet access to the user via the network module 52, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 53 may convert audio data received by the radio frequency unit 51 or the network module 52 or stored in the memory 59 into an audio signal and output as sound. Also, the audio output unit 53 may also provide audio output related to a specific function performed by the terminal 50 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 53 includes a speaker, a buzzer, a receiver, and the like.
The input unit 54 is used to receive audio or video signals. The input Unit 54 may include a Graphics Processing Unit (GPU) 541 and a microphone 542, and the Graphics processor 541 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 56. The image frames processed by the graphic processor 541 may be stored in the memory 59 (or other storage medium) or transmitted via the radio frequency unit 51 or the network module 52. The microphone 542 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 51 in case of the phone call mode.
The terminal 50 also includes at least one sensor 55, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 561 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 561 and/or the backlight when the terminal 50 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 55 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.
The display unit 56 is used to display information input by the user or information provided to the user. The Display unit 56 may include a Display panel 561, and the Display panel 561 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 57 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 57 includes a touch panel 571 and other input devices 572. The touch panel 571, also referred to as a touch screen, can collect touch operations by a user (e.g., operations by a user on the touch panel 571 or near the touch panel 571 using a finger, a stylus, or any suitable object or attachment). The touch panel 571 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and receives and executes commands sent by the processor 510. In addition, the touch panel 571 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 57 may include other input devices 572 in addition to the touch panel 571. In particular, the other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.
Further, the touch panel 571 can be overlaid on the display panel 561, and when the touch panel 571 detects a touch operation on or near the touch panel 571, the touch panel is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 provides a corresponding visual output on the display panel 561 according to the type of the touch event. Although the touch panel 571 and the display panel 561 are shown in fig. 5 as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated to implement the input and output functions of the terminal, and the implementation is not limited herein.
The interface unit 58 is an interface for connecting an external device to the terminal 50. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 58 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 50 or may be used to transmit data between the terminal 50 and an external device.
The memory 59 may be used to store software programs as well as various data. The memory 59 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 59 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 510 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 59 and calling data stored in the memory 59, thereby performing overall monitoring of the terminal. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.
The terminal 50 may further include a power supply 511 (e.g., a battery) for supplying power to various components, and preferably, the power supply 511 may be logically connected to the processor 510 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.
In addition, the terminal 50 includes some functional modules that are not shown, and will not be described in detail herein.
Referring to fig. 6, an embodiment of the present invention further provides a terminal 60, which includes a processor 61, a memory 62, and a computer program stored in the memory 62 and capable of running on the processor 61, where the computer program is executed by the processor 61 to implement the processes of the foregoing resource reservation method embodiment, and can achieve the same technical effects, and details are not repeated here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing resource reservation method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (15)
1. A resource reservation method is applied to a terminal, and is characterized by comprising the following steps:
and reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate, wherein the resource occupancy rate is related to reserved but unused resources.
2. The method of resource reservation according to claim 1, wherein the resource occupancy comprises: and the occupancy rate of the unused reserved resources is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
3. The method of resource reservation according to claim 1, wherein the resource occupancy comprises: and the terminal total channel occupancy rate is (the number of used resources in the measurement window + the number of reserved resources after the measurement time in the measurement window + the number of unused reserved resources before the measurement time in the measurement window)/the total number of resources configured in the measurement window.
4. The method of resource reservation according to claim 1, wherein the resource occupancy comprises: the terminal total channel occupancy rate is the occupancy rate of unused reserved resources plus the channel occupancy rate;
wherein, the channel occupancy rate is (the number of used resources in the measurement window + the number of reserved resources after the measurement time in the measurement window)/the total number of resources configured in the measurement window;
the occupancy rate of the unused reserved resource is the number of unused reserved resources before the measurement time in the measurement window/the total number of resources configured in the measurement window.
5. A method for resource reservation according to claim 2 or 3 or 4, characterized in that the number of resources reserved after a measurement instant within the measurement window is either the reserved resources indicated in the SCI or the reserved resources selected for higher layers.
6. A method for reserving resources, according to claim 2, 3 or 4, characterized in that a time unit is located before the measurement time in said measurement window, and the value of a satisfies at least one of the following conditions:
greater than a1, where a1 is T0 x alpha, T0 is the length of the detection window, alpha is a coefficient in the range of 0 to 1; or, when the length T0> of the detection window is 1000ms, a1 is T0 x alpha, and when the length T0<1000ms, a1 is a predefined, preconfigured or configured value;
a/TCR_measurea value of greater than a 1%, TCR_measureFor the length of the measurement window, a 1% is a predefined, preconfigured or configured value.
7. A method for reserving resources, according to claim 2, 3 or 4, characterised in that there are b time units after a measurement instant within said measurement window, the value of b satisfying at least one of the following conditions:
greater than B1, B1 is a predefined, preconfigured, or configured value;
b/TCR_measurea value of greater than b 1%, TCR_measureFor the length of the measurement window, b 1% is a predefined, preconfigured or configured value;
related to the range that the SCI of the currently transmitted TB may indicate;
b is valued so that n + b does not exceed the last resource selected by the currently transmitted TB or the last resource selected by the terminal;
the lesser of the two: 32slots, the interval of the current measurement time to the slot of the last resource reserved.
8. The method as claimed in claim 2, 3 or 4, wherein the number of the threshold is one, and the performing resource reservation according to the measured resource occupancy and at least one threshold corresponding to the resource occupancy comprises:
and when the measured resource occupancy rate is greater than or equal to the threshold value, stopping reserving the extra resources after the n + L time, wherein L is a value greater than or equal to 0.
9. The method as claimed in claim 2, 3 or 4, wherein the number of the threshold values is multiple, and the performing resource reservation according to the measured resource occupancy and at least one threshold value corresponding to the resource occupancy comprises:
when the measured resource occupancy rate is greater than or equal to the maximum value in the threshold values, stopping reserving additional resources after the time n + L, wherein L is a value greater than or equal to 0;
or
When the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is greater than the maximum value in the threshold values, stopping reserving additional resources after n + L time, wherein L is a value greater than or equal to 0;
or
When the measured resource occupancy rate is larger than the minimum value in the threshold values, reducing the number of the resources which can be reserved by the terminal, and/or increasing the reserved interval between the reserved resources;
when the measured resource occupancy rate is greater than the middle value in the threshold value, the number of resources which can be reserved by the terminal is further reduced, and/or the reservation interval between the reserved resources is further increased;
when the measured resource occupancy rate is greater than the maximum value in the threshold values, stopping reserving additional resources after n + L time, wherein L is a value greater than or equal to 0;
wherein the intermediate value is at least one.
10. The method of resource reservation according to claim 9, wherein the reservation interval or a relation between different reservation intervals is predefined, pre-configured or configured.
11. A method of resource reservation according to claim 2, 3 or 4, wherein the number of resources is in one of the following units: sub-channels, physical resource blocks, resource units, slots, symbols, subframes, milliseconds, frames.
12. The resource reservation method according to claim 2, 3 or 4, wherein the threshold value of the resource occupancy is configured in at least one of the following manners:
each terminal corresponds to a respective threshold value;
each HARQ process corresponds to a respective threshold value;
each TB corresponds to a respective threshold value;
each resource pool corresponds to a respective threshold value;
each priority corresponds to a respective threshold value;
each logic channel corresponds to a respective threshold value;
each logic channel group corresponds to a respective threshold value;
each channel busy rate range corresponds to a respective threshold value.
13. A terminal, comprising:
and the processing module is used for reserving resources according to the resource occupancy rate and at least one threshold value corresponding to the resource occupancy rate.
14. A terminal, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the resource reservation method according to any of claims 1 to 12.
15. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the resource reservation method according to any one of claims 1 to 12.
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| WO2021147717A1 (en) | 2021-07-29 |
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