CN109327906B - Resource allocation and control information sending method, device and equipment - Google Patents

Resource allocation and control information sending method, device and equipment Download PDF

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CN109327906B
CN109327906B CN201710647988.4A CN201710647988A CN109327906B CN 109327906 B CN109327906 B CN 109327906B CN 201710647988 A CN201710647988 A CN 201710647988A CN 109327906 B CN109327906 B CN 109327906B
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subframe
channel
resource
signaling
channel resource
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CN109327906A (en
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杨瑾
卢有雄
黄双红
陈杰
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Abstract

When in resource allocation, a first signaling is used for allocating a first channel resource, and an index number of the first channel resource in a first channel resource pattern is indicated in the first signaling; wherein the first channel resource pattern is determined based on a subframe in which the first signaling is located. When the control information is sent, receiving a first signaling for configuring a first channel resource, and sending the control information on the first channel resource. The method and the device can more flexibly configure the indication control channel resource, realize flexible and efficient resource configuration, facilitate improvement of resource utilization rate and meet diversified UE service requirements.

Description

Resource allocation and control information sending method, device and equipment
Technical Field
The present invention relates to the field of communications, and in particular, to a resource allocation method, apparatus, and device.
Background
In a Device-to-Device (D2D) communication system, when there is a service to be transmitted between User Equipments (UEs), the service data between the UEs is directly transmitted to a target UE by a data source UE through a Sidelink (Sidelink) without forwarding through a base station, fig. 1 is a schematic diagram of a D2D communication structure according to the related art, as shown in fig. 1, the mode of the Device-to-Device direct communication has a characteristic obviously different from a conventional cellular system communication mode, for a short-distance communication User capable of applying the D2D communication mode, the D2D transmission not only saves wireless spectrum resources, but also reduces data transmission pressure of a core network, can reduce system resource occupation, increase spectral efficiency of the cellular communication system, reduce terminal transmission power consumption, and save network operation cost to a great extent.
Taking a Long Term Evolution (LTE) system as an example, the radio resources are divided into resources in a unit of radio frames in a time domain, each radio frame is 10ms and includes 10 subframes. Each subframe is 1ms divided into 2 slots (slots) of 0.5ms, as shown in fig. 2. In the frequency domain, resources are divided in units of subcarriers, each subcarrier containing 15kHz or 7.5kHz resources.
According to the above division unit of time domain and frequency domain resources, when an eNB schedules resources for a UE, the eNB performs Resource scheduling indication in units of subframes in the time domain, and performs indication in units of Resource Blocks (RBs) in the frequency domain, where fig. 3 shows a Resource structure of an LTE system, where an RB is defined as including 1 slot in the time domain (1 slot includes RB)
Figure BDA0001367315350000011
One SC-FDMA symbol, in the figure ^ h>
Figure BDA0001367315350000012
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Figure BDA0001367315350000013
Sub-carrier wave->
Figure BDA0001367315350000014
The eNB may flexibly indicate one or more RB resources for the UE scheduling according to scheduling requirements.
In a related art D2D communication method, an eNB schedules an indication resource in a sidelink resource pool for a UE. The side link resource pool includes a Physical side link Control Channel (PSCCH) resource pool for carrying side link Control information, and a Physical side link Shared Channel (PSCCH) resource pool for carrying side link data service information.
In a related art D2D communication method, an eNB schedules and configures sidelink resources for a UE in each resource pool period. The side link resource structure and the configuration method limit the flexibility and the adaptability of resource scheduling, cannot be used in some D2D communication scenes, and an effective solution is not provided at present aiming at the problems.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a resource allocation method, including:
configuring a first channel resource through a first signaling, wherein an index number of the first channel resource in a first channel resource pattern is indicated in the first signaling;
wherein the first channel resource pattern is determined based on a subframe in which the first signaling is located.
In view of this, an embodiment of the present invention further provides a resource allocation apparatus, including:
the index number determining module is used for determining a first channel resource pattern by taking a subframe where a first signaling configuring a first channel resource is located as a reference, and determining an index number of the configured first channel resource in the first channel resource pattern;
and the resource configuration module is used for sending the first signaling and indicating the index number of the first channel resource in the first signaling.
In view of this, an embodiment of the present invention provides a base station, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the processing of the resource allocation method when executing the computer program.
In view of this, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the processing of the above-mentioned resource configuration method.
The embodiment scheme can more flexibly configure and indicate the control channel resources, realizes flexible and efficient resource configuration, is beneficial to improving the resource utilization rate and meets diversified UE service requirements.
In view of this, an embodiment of the present invention further provides a method for sending control information, including:
receiving a first signaling configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern, and the first channel resource pattern is determined based on a subframe where the first signaling is located;
transmitting control information on the first channel resource.
In view of this, an embodiment of the present invention further provides a control information sending apparatus, including:
a signaling receiving module, configured to receive a first signaling for configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern;
a resource determining module, configured to determine the first channel resource pattern based on a subframe in which the first signaling is located, and determine the first channel resource in the first channel resource pattern according to an index number of the first channel resource;
a sending module, configured to send control information on the first channel resource.
In view of this, an embodiment of the present invention further provides a terminal, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the processing of the control information sending method when executing the computer program.
In view of the above, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the processing of the above-described control information sending method.
The embodiment scheme can identify the control channel resource indication flexibly configured at the network side, is favorable for improving the resource utilization rate and meets diversified UE service requirements.
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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of a D2D communication structure according to the related art;
fig. 2 is a diagram of a frame structure of an LTE system according to the related art;
fig. 3 is a schematic view of an LTE system resource structure according to the related art;
FIG. 4 is a schematic diagram of a Sidelink PSCCH/PSSCH resource pool configuration according to the related art;
FIG. 5 is a schematic diagram of an eNB scheduling a Sidelink PSCCH/PSSCH resource for a UE according to the related art;
fig. 6 is a schematic diagram of a configuration of a Sidelink PSCCH/PSCCH resource pool according to an embodiment of the present invention;
fig. 7 is a diagram illustrating an example one of configuring PSCCH resources according to a second embodiment of the present invention;
fig. 8 is a diagram of a second example of configuring PSCCH resources according to a second embodiment of the present invention;
fig. 9 is a schematic diagram of example three of configuring PSCCH resources in the third embodiment of the present invention;
fig. 10 is a diagram of an example four of configuring PSCCH resources according to a third embodiment of the present invention;
fig. 11 is a diagram of an example five of configuring PSCCH resources according to a fourth embodiment of the present invention;
fig. 12 is a diagram of an example six of configuring PSCCH resources according to a fifth embodiment of the present invention;
fig. 13 is a flowchart of a resource allocation method on a network device side according to an embodiment of the present invention;
fig. 14 is a flowchart of a method for sending control information at a terminal side according to an embodiment of the present invention;
fig. 15 is a block diagram of a resource allocation apparatus on the network device side according to an embodiment of the present invention;
fig. 16 is a block diagram of a control information transmitting apparatus at a terminal side according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Example one
In a D2D communication system, UE (user equipment) uses side link resources to transmit data, a sending end UE sends side link Control Information (SCI: sidelink Control Information) of D2D communication on PSCCH resources, indicates PSSCH resources used by transmitted D2D communication service data Information and related configuration Information to a receiving end UE, and further sends side link (Sidelink) data on the indicated PSSCH resources. When the network side schedules and configures the Sidelink resource for the sending end UE, the eNB needs to indicate the configured PSCCH resource and/or PSCCH resource for the sending end UE through a high layer signaling or a physical layer signaling, such as a Downlink Control Information (DCI).
In the related art, D2D PSCCH resource scheduling indication is performed according to a PSCCH resource pool period, where in each period, the PSCCH resource pool includes one or more subframes, each subframe includes one or more RBs for carrying PSCCH, and the subframes are referred to as PSCCH subframes, as shown in fig. 4. When the eNB schedules and configures PSCCH resources for a terminal (UE) through DCI, the eNB indicates one or more PSCCH resources within a PSCCH resource pool period range for the UE, taking the PSCCH resource pool period as a range, as shown in fig. 5. One PSCCH resource includes 1 subframe in the time domain and m RBs in the frequency domain, where m is a positive integer.
In some D2D communication application scenarios, data may have burstiness, but when a PSCCH resource pool period is used as a range to configure a PSCCH resource, one period can only be configured once, so that the real-time performance is not high, and the number of configurable subframes is limited by the periodicity, which cannot meet the requirement of flexible configuration.
In this embodiment, the PSCCH resource pool refers to a group of resources used for carrying the Sidelink control information, and is configured by a network side through a high-level signaling or is preconfigured by a system. The PSCCH resource pool comprises one or more subframes in a time domain, the subframes in each PSCCH resource pool are called PSCCH subframes, and the PSCCH subframes can be continuous or discontinuous. The PSCCH resource pool comprises one or more RBs in a frequency domain for carrying the PSCCH, the position of the RBs contained in each PSCCH subframe is the same, and the contained RBs can be continuous or discontinuous. Different from the related art, the PSCCH resource pool of the present embodiment is not used to limit the periodicity of PSCCH resource scheduling, and the PSCCH resource scheduling indication method using the resource pool period as the scheduling range in the related art is not applicable any more, and a corresponding solution needs to be proposed.
In the resource allocation method of the network side device of this embodiment, a first channel resource is allocated through a first signaling, and an index number of the first channel resource in a first channel resource pattern is indicated in the first signaling; wherein the first channel resource pattern is determined based on a subframe in which the first signaling is located. As shown in fig. 13, the method includes: step 110, determining a first channel resource pattern by taking a subframe where the first signaling is located as a reference; step 120, configuring a first channel resource through the first signaling, and indicating an index number of the first channel resource in a first channel resource pattern in the first signaling.
Before a terminal of this embodiment sends control information, receiving a first signaling configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern, where the first channel resource pattern is determined based on a subframe where the first signaling is located; control information is then transmitted on the first channel resources. As shown in fig. 14, the control information transmission method on the terminal side includes: step 210, receiving a first signaling configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern; step 220, determining the first channel resource pattern by using the subframe where the first signaling is located as a reference, and determining the first channel resource in the first channel resource pattern according to the index number; step 230, sending control information on the first channel resource.
The network side device in this embodiment takes an eNB in an LTE system as an example, but may be a base station, a relay station, or the like of another system. The first channel resource in this embodiment refers to a PSCCH resource, and the first signaling is DCI signaling, but the present application is not limited thereto. When the eNB schedules and configures the PSCCH resources to the UE through the DCI signaling, determining a PSCCH resource pattern by taking a subframe where the DCI is located (namely a subframe for sending the DCI) as a reference, and indicating the configured PSCCH resources for the UE through indicating the index number of the PSCCH resources in the determined PSCCH resource pattern. Each PSCCH resource comprises one subframe or one slot in the time domain and m RBs in the frequency domain, where m is a positive integer and m is a fixed value or predefined by the system.
It is assumed that the eNB transmits DCI in subframe # n and indicates to the UE the index number of the PSCCH resource configured for it in the DCI. The UE receives the DCI information through blind detection, obtains the index number of the PSCCH resource (namely the configured PSCCH resource) indicated in the DCI, determines a PSCCH resource pattern by taking the subframe # n where the DCI is located as a reference, and can determine the PSCCH resource configured in the PSCCH resource pattern or determine the position of the configured PSCCH resource in the PSCCH resource pattern according to the index number of the indicated PSCCH resource. Wherein the rules for determining the PSCCH resource pattern are predefined by the system or determined by the network side configuration.
In this embodiment, the network side device and the terminal may determine the first channel resource pattern according to one of the following manners:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern;
determining all first channel resources contained in a range of T first channel subframes beginning with a kth subframe after the subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern;
determining a first channel subframe after the subframe where the first signaling is located, wherein the first channel subframe is a first channel subframe with a subframe interval between the first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining an index number of each first channel resource contained in the first channel subframe and subsequent first channel subframes thereof according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
The present embodiment further provides a resource configuration apparatus on a network device side, as shown in fig. 15, including:
an index number determining module 10, configured to determine a first channel resource pattern by using a subframe in which a first signaling configuring a first channel resource is located as a reference, and determine an index number of the configured first channel resource in the first channel resource pattern;
a resource configuration module 20, configured to send the first signaling, where the index number of the first channel resource is indicated in the first signaling.
In this embodiment, the determining module of the index number determines the first channel resource pattern based on the subframe where the first signaling is located, including:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or alternatively
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining an index number of each first channel resource contained in the starting first channel subframe and subsequent first channel subframes thereof according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
The present embodiment also provides a control information transmitting apparatus at a terminal side, as shown in fig. 16, including:
a signaling receiving module 50, configured to receive a first signaling for configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern;
a resource determining module 60, configured to determine the first channel resource pattern based on the subframe where the first signaling is located, and determine the first channel resource in the first channel resource pattern according to the index number of the first channel resource.
A sending module 70, configured to send control information on the first channel resource.
In this embodiment, the determining, by using the subframe where the first signaling is located as a reference, the first channel resource pattern by the resource determining module includes:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or alternatively
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining the index number of each first channel resource contained in the starting first channel subframe and the subsequent first channel subframes according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
In the above apparatus embodiment, the first channel resource is a physical side link control channel PSCCH resource.
The present embodiment further provides a base station, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the processing of any resource allocation method on the network device side according to the present embodiment when executing the computer program.
The present embodiment also provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the processing of any resource configuration method on the network device side according to the present embodiment.
The present embodiment further provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a process of any control information sending method on the terminal side according to the present embodiment when executing the computer program.
The present embodiment also provides a computer-readable storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements a process of controlling an information transmission method according to any one of the terminal sides of the present embodiment.
The embodiment can achieve flexible and effective indication of the PSCCH resources, and the subframe where the DCI is located is taken as a reference, so that the method is not limited by the period of the PSCCH resource pool, and therefore the PSCCH resources can be flexibly scheduled and indicated for the UE.
Example two
This embodiment describes a scheme for determining a PSCCH resource pattern in the first embodiment.
In this embodiment, a subframe # n where DCI is located is used as a reference, each PSCCH resource is numbered on all PSCCH resources included in consecutive T subframes starting from a kth subframe after the subframe # n, and an index number corresponding to each PSCCH resource included in the T subframes is determined according to a predefined numbering rule, that is, a PSCCH resource pattern is formed. As the index number of the PSCCH resource, one PSCCH resource can be uniquely found, that is, the index numbers of different PSCCH resources are different. The determination of the resource pattern in this embodiment is also based on the PSCCH resource pool configuration, but is not limited to the configuration, and may be used regardless of the specific configuration of the resource pool.
This is illustrated below with several examples.
Example 1
In this example, the rule for the system to predefine the PSCCH resource pattern is: and numbering the PSCCH resources on all PSCCH resources contained in continuous T subframes beginning from the kth subframe after the subframe # n by taking the subframe # n where the DCI indicating the Sidelink resources to the UE by the eNB is positioned as a reference according to the sequence of time domain first and frequency domain second, and determining the PSCCH resource pattern. The sequential numbering of the time domain and the frequency domain refers to that on all PSCCH resources included in T subframes, the PSCCH resources on the same frequency domain resource (the frequency domain resource with the smallest or the largest RB index) are numbered sequentially according to the time domain subframe order, and then the PSCCH resources on adjacent frequency domain resources are numbered sequentially according to the frequency domain resource order, and so on, as shown in fig. 7. And determining the unique PSCCH resource index number corresponding to each PSCCH resource in the T subframes according to the rule. In this example, k =4,t =10, and each PSCCH resource includes one subframe in the time domain and 1RB in the frequency domain.
As shown in fig. 7, the PSCCH resource pool configured on the network side includes one or more PSCCH subframes, and each PSCCH subframe includes one or more RBs. The eNB transmits DCI on subframe # n, which is used to schedule and configure the Sidelink PSCCH resource to the UE. The configured PSCCH resource is indicated in the DCI by the index number of the PSCCH resource, and the indicated PSCCH resource index =9, and then according to the rule predefined by the system and the configuration of the PSCCH resource pool, the PSCCH resource configured by the eNB is RB index # s +2 on subframe # n +6, that is, the corresponding PSCCH resource index =9 corresponds to the PSCCH resource. After the resource pool configuration is determined, the RB index (index) included in the resource pool may be determined, where index # s represents the index of the RB with the smallest index among all RBs included in the resource pool, and is drawn at the bottom in the figure, and the sequence number increases in the upward direction.
The UE receives a DCI indication used by the eNB for indicating the Sidelink resource on a subframe # n by blindly detecting the DCI sent by the eNB, and obtains an index number of the indicated PSCCH resource from the DCI indication, wherein the PSCCH resource index =9. Further, the UE determines, according to a PSCCH resource pattern rule predefined by the system, the RBs on the PSCCH subframe and each PSCCH subframe included in the PSCCH subframe, based on the subframe # n and combined with the PSCCH resource pool configuration, from T =10 consecutive subframes starting from the subframe # n + 4. The PSCCH resource pattern is determined by sequentially numbering the PSCCH resources according to the sequence of a time domain and a frequency domain, namely the PSCCH resources RB on the 4 PSCCH subframes are taken as a whole and are numbered and sequenced in a logical continuous mode, and as shown in figure 7, the resource index number corresponding to each PSCCH resource is determined. Based on this, the UE may obtain the PSCCH resource corresponding to the PSCCH resource index =9 indicated in the DCI, that is, the RB index # s +2 on the subframe # n +6, that is, the PSCCH resource configured by the eNB.
Example two
In this embodiment, the rule for predefining the PSCCH resource pattern by the system is as follows: the method comprises the steps that a subframe # n where DCI of a Sidelink resource is indicated to UE by eNB serves as a reference, and PSCCH resources are numbered on all PSCCH resources contained in continuous T subframes beginning from a kth subframe after the subframe # n according to a sequence of a frequency domain and a time domain, so that a PSCCH resource pattern is determined. The sequential numbering of the frequency domain and the time domain refers to that on all PSCCH resources included in T subframes, the PSCCH resources on the first PSCCH subframe are numbered sequentially according to the sequence of the frequency domain resources, then the PSCCH resources on the next PSCCH subframe are numbered sequentially according to the sequence of the time domain subframes, and so on, as shown in fig. 8. And determining the unique PSCCH resource index number corresponding to each PSCCH resource in the T subframes according to the rule. Wherein k =1,t =8, each PSCCH resource includes one subframe in time domain and 2 RBs in frequency domain.
As shown in fig. 8, the PSCCH resource pool configured on the network side includes multiple subframes and multiple RBs on each PSCCH subframe. The eNB transmits DCI on subframe # n, which is used to schedule and configure the Sidelink PSCCH resource and the PSCCH resource to the UE. The configured PSCCH resource is indicated in the DCI by the index number of the PSCCH resource, and the indicated PSCCH resource index =6, according to the predefined rule of the system and the PSCCH resource pool configuration, the PSCCH resource configured by the eNB is RB index # s and # s +1 on subframe # n +5, that is, the corresponding resource corresponding to PSCCH resource index =6.
The UE receives a DCI indication indicating the sildelink resource from the eNB by blindly detecting the DCI transmitted by the eNB in subframe # n, and obtains an index of the indicated PSCCH resource from the DCI indication, where PSCCH resource index =6. Further, according to a PSCCH resource pattern rule predefined by the system, the UE determines, based on the subframe # n and in combination with the PSCCH resource pool configuration, the PSCCH subframes and the RB on each PSCCH subframe included in the PSCCH subframe, starting from the subframe # n +1, on consecutive T =8 subframes. The PSCCH resource pattern is determined by sequentially numbering the PSCCH resources according to a sequence of a frequency domain and a time domain, namely, the 3 PSCCH subframes and the 12 RBs on each PSCCH subframe are taken as a whole and are numbered and sequenced in a logical continuous mode, and as shown in FIG. 8, the resource index number corresponding to each PSCCH resource is determined. Based on this, the UE may obtain the PSCCH resource corresponding to the PSCCH resource index =6 indicated in the DCI, that is, the RBindex # s and # s +1 in the subframe # n +5, which are the PSCCH resources configured by the eNB.
It should be noted that the numbering sequence in the above example is only exemplary, and for the purposes of the present application, any numbering method that actually assigns an index number to each PSCCH in the PSCCH resource pattern to distinguish different PSCCHs can be used.
EXAMPLE III
This embodiment describes a scheme for determining a PSCCH resource pattern in the second embodiment.
In this embodiment, on the basis of the subframe # n where the DCI is located, on all PSCCH resources included in T PSCCH subframes beginning with the kth subframe after the subframe # n, each PSCCH resource is numbered, and according to a predefined numbering rule, a unique number corresponding to each PSCCH resource included in the T PSCCH subframes is determined, that is, a PSCCH resource pattern is formed. If the k-th subframe after subframe # n is a PSCCH subframe, the T PSCCH subframes include the k-th subframe.
The method can flexibly and efficiently realize the indication of the PSCCH resources, is not limited by the configuration of a PSCCH resource pool, realizes the indication of the PSCCH resources in the range of T PSCCH subframes on the basis of the subframe # n of the DCI, is favorable for indicating the PSCCH resources in the DCI with fixed overhead, and is favorable for controlling the DCI indication overhead.
The scheme of the present embodiment is illustrated below by means of several examples.
Example three
The rule for configuring the PSCCH resource pattern by the network side through the high-level signaling is as follows: the method comprises the steps that a subframe # n where DCI of Sidelink resources is indicated to UE by eNB serves as a reference, PSCCH resources are numbered on all PSCCH resources in T PSCCH subframes starting from a kth subframe after the subframe # n according to a sequence of a time domain and a frequency domain, a PSCCH resource pattern is determined, and then a unique PSCCH resource index number corresponding to each PSCCH resource in the T PSCCH subframes is determined. Wherein k =4, t =4, and each PSCCH resource includes one subframe in the time domain and 1RB in the frequency domain.
As shown in fig. 9, the PSCCH resource pool configured on the network side includes multiple subframes and multiple RBs on each PSCCH subframe. The eNB transmits DCI on subframe # n, which is used to schedule and configure the Sidelink PSCCH resource and the PSCCH resource to the UE. The configured PSCCH resource is indicated in the DCI by the index number of the PSCCH resource, and if the indicated PSCCH resource index =15, the PSCCH resource configured by the eNB is RB index # s +3 on subframe # n +10, that is, the corresponding resource corresponding to PSCCH resource index =15, according to the rule predefined by the system and the PSCCH resource pool configuration.
The UE receives a DCI indication indicating the sildelink resource from the eNB by blindly detecting the DCI transmitted by the eNB in subframe # n, and obtains an index of the indicated PSCCH resource, where PSCCH resource index =15. Further, the UE determines, according to a PSCCH resource pattern rule predefined by the system, on the basis of the subframe # n, and in combination with the PSCCH resource pool configuration, T =4 PSCCH subframes starting from the subframe # n +4, and 4 RBs starting from the RB index # s on each PSCCH subframe as PSCCH resources, sequentially numbering the PSCCH resources according to a sequence of a time domain and a frequency domain, and determines a PSCCH resource pattern, that is, the 4 PSCCH subframes and the PSCCH resource RB on each PSCCH subframe are taken as a whole, and are numbered and ordered in a logically continuous manner, as shown in fig. 9, and a resource index number corresponding to each PSCCH resource is determined. Based on this, the UE may obtain the PSCCH resource corresponding to the PSCCH resource index =15 indicated in the DCI, that is, the RB index # s +3 in the subframe # n +10, which is the PSCCH resource configured by the eNB.
Example four
The rule for the system to predefine the PSCCH resource pattern is: the method comprises the steps that a subframe # n where DCI of Sidelink resources is indicated to UE by eNB is taken as a reference, PSCCH resources are numbered on all PSCCH resources contained in T PSCCH subframes beginning from a kth subframe after the subframe # n according to a sequence of a frequency domain and a time domain, a PSCCH resource pattern is determined, and then a unique PSCCH resource index number corresponding to each PSCCH resource in the T subframes is determined. Wherein k =4, t =3, each PSCCH resource includes one slot in the time domain and 2 RBs in the frequency domain.
As shown in fig. 10, the PSCCH resource pool configured on the network side includes multiple subframes and multiple RBs on each PSCCH subframe. The eNB transmits DCI on subframe # n, which is used to schedule and configure the Sidelink PSCCH resource and the PSCCH resource to the UE. The allocated PSCCH resource is indicated by the index number of the PSCCH resource in the DCI, the indicated PSCCH resource index =24, and then the PSCCH resource allocated by the eNB is slot #0, RB index #, and # s +1 on a subframe # n +9 according to the rule predefined by the system and the configuration of the PSCCH resource pool, namely the corresponding resource corresponding to the PSCCH resource index =24.
The UE receives a DCI indication indicating the sildelink resource from the eNB by blindly detecting the DCI transmitted by the eNB in subframe # n, and obtains an index of the indicated PSCCH resource from the DCI indication, where PSCCH resource index =24. Further, the UE determines, according to a PSCCH resource pattern rule predefined by the system, on the basis of the subframe # n, and in combination with the PSCCH resource pool configuration, T =3 PSCCH subframes starting from the subframe # n +4, and 12 RBs starting from the RB index # s on each PSCCH subframe as PSCCH resources, sequentially numbers the PSCCH resources according to a sequence of a frequency domain and a time domain, determines a PSCCH resource pattern, that is, the 3 PSCCH subframes and the 12 RBs on each PSCCH subframe are taken as a whole, and performs numbering and sorting in a logically continuous manner, as shown in fig. 10, determines a resource index number corresponding to each PSCCH resource. Based on this, the UE may obtain the PSCCH resource corresponding to the PSCCH resource index =24 indicated in the DCI, that is, RB index # s and # s +1 on slot #0 in subframe # n +9, which is the PSCCH resource configured by the eNB.
Example four
This embodiment describes a scheme for determining a PSCCH resource pattern by using the method in the first embodiment.
In this embodiment, with the subframe # n where the DCI is located as a reference, starting with a first PSCCH subframe after the subframe # n and having a subframe interval with the subframe # n greater than or equal to k or greater than k, numbering each PSCCH resource on a subsequent PSCCH subframe in sequence, and determining an index number corresponding to each PSCCH resource included in the PSCCH subframe according to a numbering rule of a frequency domain and a time domain, that is, forming a PSCCH resource pattern.
In this embodiment, the range of the PSCCH subframe forming the PSCCH resource pattern is not given from the system perspective, because the PSCCH subframe forming the PSCCH resource pattern is numbered according to the sequence of the frequency domain first and the time domain second, and the index number of the PSCCH subframe in the PSCCH resource pattern does not change with the range of the PSCCH subframe. The selection may be made in dependence on the configured PSCCH resources when implemented such that the range of PSCCH subframes forming the PSCCH resource pattern comprises the configured PSCCH resources, or a range may be determined by a particular implementer.
The scheme of the present embodiment is explained below by way of example.
Example five
The rule of the network side for configuring the PSCCH resource pattern through the high-level signaling is as follows: the method comprises the steps that a subframe # n where DCI of the Sidelink resource is indicated to UE by eNB serves as a reference, a subframe interval between a subframe # n and a subframe # n after the subframe # n is larger than or equal to k, or a first PSCCH subframe which is larger than k starts, PSCCH resources on all PSCCH subframes are numbered sequentially according to a sequence of a frequency domain and a time domain, and a PSCCH resource pattern is determined. Wherein k =4, each PSCCH resource includes one subframe in time domain and 1RB in frequency domain.
As shown in fig. 11, the PSCCH resource pool configured on the network side includes multiple subframes, and multiple RBs on each PSCCH subframe. The eNB sends DCI on subframe # n, which is used to schedule configuration of the Sidelink PSCCH resource and the PSCCH resource to the UE. The configured PSCCH resource is indicated in the DCI by the index number of the PSCCH resource, and if the indicated PSCCH resource index =10, the PSCCH resource configured by the eNB is RB index # s +2 on subframe # n +9, that is, the corresponding resource corresponding to PSCCH resource index =10, according to the rule predefined by the system and the PSCCH resource pool configuration.
The UE receives a DCI indication indicating the sildelink resource from the eNB by blindly detecting the DCI transmitted by the eNB in subframe # n, and obtains an index of the indicated PSCCH resource from the DCI indication, where PSCCH resource index =10. Further, the UE determines, based on the PSCCH resource pattern rule predefined by the system, the PSCCH subframe after the subframe # n +4 and 4 RBs starting from the RB index # s on each PSCCH subframe as PSCCH resources by using the subframe # n as a reference and combining PSCCH resource pool configuration, sequentially numbers the PSCCH resources on the PSCCH subframe in the order of frequency domain first and time domain later, determines a PSCCH resource pattern, and determines a resource position corresponding to the PSCCH resource index indicated in the DCI as shown in fig. 11. Based on this, the UE may obtain the PSCCH resource corresponding to the PSCCH resource index =10 indicated in the DCI, that is, the RB index # s +2 on the subframe # n +9, which is the PSCCH resource configured by the eNB.
When the scheme that the PSCCH resource pattern is determined by taking the subframe where the DCI is located as the reference is adopted, the eNB schedules the PSCCH resource by considering the PSCCH resource pattern rule and the relation between the subframes for sending the DCI, and indicates the corresponding PSCCH resource index number in the DCI according to the scheduled PSCCH resource and the subframe # n for sending the DCI.
EXAMPLE five
In the present crane, the eNB indicates the scheduled PSCCH resource to the UE by directly indicating the subframe position (or slot position) of the configured PSCCH resource and the position of the frequency domain RB in the DCI.
The eNB indicates the configured PSCCH resources for the UE in the DCI for scheduling the Sidelink resources, and the indication information comprises an indication of a subframe position or a slot position where the PSCCH resources are located in a time domain and an indication of an RB position where the PSCCH resources are located in a frequency domain.
Specifically, the indication of the subframe position where the PSCCH resource is located includes: indicating a subframe number or indicating a subframe interval of a subframe where the DCI is located; the indication of the slot position includes that on the basis of indicating the subframe position of the slot, the position of the slot in the subframe is further indicated, namely the first slot or the second slot in the subframe where the PSCCH resource is located. The indication of the RB location where the PSCCH resource is located includes indicating the corresponding RB index number or indicating the subchannel index number where the RB is located.
The scheme of the present embodiment is explained below by way of example.
Example six
And the eNB indicates the configured PSCCH resources to the UE through DCI, wherein the DCI comprises time-frequency and frequency-domain resource indication of the PSCCH resources. In the time domain, the DCI indicates a subframe interval k between a subframe where the configured PSCCH resource is located and a subframe where the DCI is located, and in the frequency domain, the DCI indicates an RB index where the configured PSCCH resource is located. In addition, the system may define that each PSCCH resource includes a fixed number of RBs, for example, 2 RBs, if only an RB index needs to be indicated in the DCI, then 2 consecutive RBs starting from the indicated RB index are the configured PSCCH resource.
As shown in fig. 12, the eNB transmits DCI in subframe # n, where k =6 and rb index =9 are indicated in the DCI. After receiving the DCI, the UE determines, according to rules defined by the system, that 2 RBs of RB index =9 and 10 are configured PSCCH resources in the 6 th subframe after the subframe where the DCI is located.
The resource configuration scheme provided by the embodiment of the invention solves the problem of inflexible resource configuration in D2D communication, and can be applied to the more flexible PSCCH/PSSCH resource pool configuration condition to provide more flexible and efficient Silelink resource scheduling.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by one or more physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims (10)

1. A method of resource allocation, comprising:
configuring a first channel resource through a first signaling, wherein an index number of the first channel resource in a first channel resource pattern is indicated in the first signaling;
wherein the first channel resource pattern is determined based on a subframe in which the first signaling is located;
wherein the first channel resource pattern is determined as follows:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining the index number of each first channel resource contained in the starting first channel subframe and the subsequent first channel subframe according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
2. The method of claim 1, wherein:
the first channel resource is a physical side link control channel (PSCCH) resource.
3. A control information transmitting method, comprising:
receiving a first signaling configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern, and the first channel resource pattern is determined based on a subframe where the first signaling is located;
transmitting control information on the first channel resource;
wherein the first channel resource pattern is determined as follows:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining the index number of each first channel resource contained in the starting first channel subframe and the subsequent first channel subframes according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
4. A resource allocation apparatus, comprising:
the index number determining module is used for determining a first channel resource pattern by taking a subframe where a first signaling configuring a first channel resource is located as a reference, and determining an index number of the configured first channel resource in the first channel resource pattern;
a resource configuration module, configured to send the first signaling, where the first signaling indicates an index number of the first channel resource;
the index number determining module determines a first channel resource pattern based on a subframe in which the first signaling is located, and includes:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or alternatively
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or alternatively
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining the index number of each first channel resource contained in the starting first channel subframe and the subsequent first channel subframes according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
5. The apparatus of claim 4, wherein:
the first channel resource is a physical side link control channel (PSCCH) resource.
6. A control information transmission apparatus, comprising:
a signaling receiving module, configured to receive a first signaling for configuring a first channel resource, where the first signaling carries an index number of the first channel resource in a first channel resource pattern;
a resource determining module, configured to determine the first channel resource pattern based on a subframe in which the first signaling is located, and determine the first channel resource in the first channel resource pattern according to an index number of the first channel resource;
a sending module, configured to send control information on the first channel resource;
wherein the determining the first channel resource pattern based on the subframe of the first signaling by the resource determining module comprises:
determining all first channel resources contained in a continuous T subframe range starting from a kth subframe after a subframe where the first signaling is located, and determining an index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or
Determining all first channel resources contained in the range of T first channel subframes beginning with the kth subframe after the subframe where the first signaling is located, and determining the index number of each first channel resource in all the first channel resources according to a predefined numbering rule to obtain a first channel resource pattern; or alternatively
Determining a starting first channel subframe after the subframe where the first signaling is located, wherein the starting first channel subframe is a first channel subframe with a subframe interval between the starting first channel subframe and the subframe where the first signaling is located being larger than or equal to k or larger than k, and determining the index number of each first channel resource contained in the starting first channel subframe and the subsequent first channel subframes according to a numbering rule of a frequency domain and a time domain to obtain a first channel resource pattern;
wherein k and T are positive integers.
7. A base station comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor when executing the computer program realizes the process of any of the methods of claims 1-2.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the processing of the method according to any one of claims 1-2.
9. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the process of the method according to claim 3 when executing the computer program.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that,
the computer program, when executed by a processor, implements the process of the method of claim 3.
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