CN113395766B - Cross-carrier scheduling method and communication device - Google Patents

Cross-carrier scheduling method and communication device Download PDF

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CN113395766B
CN113395766B CN202010168528.5A CN202010168528A CN113395766B CN 113395766 B CN113395766 B CN 113395766B CN 202010168528 A CN202010168528 A CN 202010168528A CN 113395766 B CN113395766 B CN 113395766B
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CN113395766A (en
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周欢
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

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Abstract

The application discloses a cross-carrier scheduling method and a communication device, which are applied to access network equipment, wherein the method comprises the following steps: determining a first bit number of first code block group transmission information CBGTI of a first cell; determining a second bit number of a second CBGTI of a second cell, wherein the first cell carries out cross-carrier scheduling through the second cell; generating a second CBGTI, wherein the code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number; and sending the second CBGTI to the terminal equipment through the second cell. By the embodiment of the application, cross-carrier scheduling between the secondary cell and the primary cell can be realized.

Description

Cross-carrier scheduling method and communication device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a cross-carrier scheduling method and a communications apparatus.
Background
Carrier Aggregation (CA) may aggregate a plurality of component carriers together, and collectively use them for transmission and reception of a single terminal device, and may achieve a higher rate by increasing available frequency resources of the terminal device. Where component carriers may come from different cells, if the scheduling grant and transmission data are sent on different carriers, this situation is called cross-carrier scheduling.
For example, the first cell may perform cross-carrier scheduling through the second cell, and send a Physical Downlink Control Channel (PDCCH) of the first cell to the ue through the second cell. And a Physical Downlink Shared Channel (PDSCH) is sent to the ue through the local cell, i.e., the first cell.
The current carrier aggregation only supports cross-carrier scheduling between the auxiliary cells, and the main cell can only perform the carrier scheduling, so that the problem of limited PDCCH capacity on the main cell is caused. Therefore, how to perform cross-carrier scheduling between the secondary cell and the primary cell becomes a problem to be solved urgently.
Disclosure of Invention
The application discloses a cross-carrier scheduling method and a communication device, which can realize cross-carrier scheduling between an auxiliary cell and a main cell.
In a first aspect, an embodiment of the present application provides a cross-carrier scheduling method, which is applied to an access network device, and the method includes:
determining a first bit number of first code block group transmission information CBGTI of a first cell;
determining a second bit number of a second CBGTI of a second cell, wherein the first cell carries out cross-carrier scheduling through the second cell;
generating the second CBGTI, wherein the code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number;
and sending the second CBGTI to the terminal equipment through the second cell.
In one embodiment, each of the first N1 bits in the second CBGTI corresponds to a first cell
Figure BDA0002408001780000021
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one embodiment, the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000022
In one embodiment, each of the last N2 bits in the second CBGTI corresponds to a cell of the first cell
Figure BDA0002408001780000023
CBG, said N2= K2-mod (K1, K2).
In one embodiment, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000024
In a second aspect, an embodiment of the present application provides a cross-carrier scheduling method, which is applied to a terminal device, and the method includes:
receiving second code block group transmission information CBGTI sent by the access network equipment to the terminal equipment through a second cell;
determining a first number of bits of a first CBGTI of a first cell;
determining a second bit number of a second CBGTI of a second cell, and carrying out cross-carrier scheduling on the first cell through the second cell;
and determining the CBG of the first cell corresponding to each bit in the second CBGTI based on the first bit number and the second bit number.
In one embodiment, each of the first N1 bits in the second CBGTI corresponds to a first cell
Figure BDA0002408001780000025
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one embodiment, the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000026
In one embodiment, each of the last N2 bits in the second CBGTI corresponds to a cell of the first cell
Figure BDA0002408001780000027
CBG, said N2= K2-mod (K1, K2).
In one embodiment, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000028
In a third aspect, an embodiment of the present application provides a communication apparatus, including:
a processing unit, configured to determine a first bit number of first code block group transmission information CBGTI of a first cell;
the processing unit is further configured to determine a second bit number of a second CBGTI of a second cell, where the first cell performs cross-carrier scheduling through the second cell;
the processing unit is further configured to generate a second CBGTI, where a code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number;
and the communication unit is used for sending the second CBGTI to the terminal equipment through the second cell.
In a fourth aspect, an embodiment of the present application provides a communication apparatus, including:
a communication unit, configured to receive second code block group transmission information CBGTI sent by an access network device to a terminal device through a second cell;
a processing unit, configured to determine a first number of bits of a first CBGTI of a first cell;
the processing unit is further configured to determine a second bit number of a second CBGTI of a second cell, and the first cell performs cross-carrier scheduling through the second cell;
the processing unit is further configured to determine, based on the first number of bits and the second number of bits, a CBG of the first cell corresponding to each bit in the second CBGTI.
In a fifth aspect, the present application provides a communication apparatus, including a processor, a memory and a communication interface, where the processor, the memory and the communication interface are connected to each other, where the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions, perform the cross-carrier scheduling method described in the first aspect, or perform the cross-carrier scheduling method described in the second aspect.
In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores one or more instructions, where the one or more instructions are adapted to be loaded by a processor and execute the cross-carrier scheduling method described in the first aspect, or the cross-carrier scheduling method described in the second aspect.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a transmission block structure according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a wireless network architecture according to an embodiment of the present application;
fig. 3 is a schematic diagram of a cross-carrier scheduling method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a communication device according to an embodiment of the present application;
fig. 5 is a simplified schematic physical structure diagram of a communication device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
In order to better understand the embodiments of the present application, the following terms refer to the embodiments of the present application:
carrier Aggregation (CA): which is a technique for increasing a transmission bandwidth, 2 or more Component Carriers (CCs) may be aggregated, and a plurality of carriers serve one terminal device at a time. The terminal equipment can obtain larger service bandwidth and correspondingly obtain larger transmission rate. Each CC may correspond to one cell independently, that is, aggregating one component carrier may be regarded as aggregating one cell. After entering the connected state, the terminal device may communicate with the access network device through multiple component carriers at the same time, and the access network device may assign a Primary Component Carrier (PCC) to the terminal device, and accordingly, the other component carriers are referred to as Secondary Component Carriers (SCCs). A serving cell on a primary component carrier is called a primary cell (PCell); the serving cell on the secondary component carrier is referred to as a secondary cell (SCell). Among the cells aggregated by the terminal devices, one cell may be a primary cell, and the cell is used for access of the terminal device. The other cells may be secondary cells and are configured by the network after entering the connected state. The network can quickly activate or deactivate the secondary cell to meet the requirement-free change, and different terminal devices can configure different cells as primary cells, or the configuration of the primary cells is specific to each terminal device.
And (3) cross-carrier scheduling: refers to transmitting scheduling information of other component carriers on one designated component carrier. In the carrier aggregation scenario, scheduling grant may be performed for each carrier, and when scheduling information and transmission data are sent on different carriers, it is called cross-carrier scheduling. For example, when the first cell performs cross-carrier scheduling through the second cell, the access network device transmits a Physical Downlink Control Channel (PDCCH) through the second cell, and transmits a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH through the first cell.
Transport Block (TB): referring to fig. 1, fig. 1 is a schematic diagram of a transport Block structure provided in this embodiment, where one TB may be divided into 10 Code Blocks (CBs), that is, CBs 0 to CB9. CBG0 is formed by CB 0-CB 2, CBG1 is formed by CB 3-CB 5, CBG2 is formed by CB 6-CB 7, and CBG3 is formed by CB 8-CB 9. It is understood that the TB is divided into 4 CBGs. Of course, one TB may include more than 10 CBs or less than 10 CBs, and 10 CBs and 4 CBGs are exemplified in the embodiments of the present application. After the CBs in one TB are grouped, CBGs can be obtained, and the number of CBGs in one TB can be 2, 4,6, or 8, etc. When the network initially transmits a TB, the code block segmentation is carried out, the corresponding CBG is determined, and the change is not sent in different transmission times, so that the condition that errors are generated due to code block re-segmentation in two retransmissions can be avoided. When the decoding of the CB fails in the transmitted TB, the CBG where the CB which fails to decode is located only needs to be retransmitted, and the whole TB does not need to be retransmitted, so that the resource consumption can be reduced. For example, if the decoding of CB0 in fig. 1 fails and CB0 exists in CBG0, only CBG0 needs to be retransmitted, and the retransmission of the entire TB is not needed.
Code Block Group Transmission Information (CBGTI): the CBGTI is included in Downlink Control Information (DCI) of the PDCCH. CBGTIs are used to indicate which CBGs are contained and which CBGs are not contained in a TB. The size of CBGTI may be N TB N bits, where N is the maximum number of CBGs contained in each TB of the higher layer signaling configuration, and N may be different for different cell configurations. N is a radical of hydrogen TB Is the number of TBs configured by the higher layer signaling. CBGTI is an additional information field in DCI, which may be 0, 2, 4,6, or 8 bits, etc. Each bit of the CBGTI may correspond one-to-one to the CBG into which one TB is divided. For example, if a TB is divided into 4 CBGs, the bit number of the CBGTI is also 4, the first bit of the CBGTI corresponds to CBG0 in the TB, the second bit of the CBGTI corresponds to CBG1 in the TB, and so on. In the existing standard, each bit of the CBGTI corresponds to only one CBG.
In order to better understand the embodiments of the present application, a network architecture to which the embodiments of the present application are applicable is described below.
Referring to fig. 2, fig. 2 is a schematic diagram of a wireless network architecture according to an embodiment of the present disclosure. As shown in fig. 2, the wireless network architecture diagram includes an access network device and a terminal device. The access network device covers a certain communication range through the first cell and the second cell. One cell of the first cell and the second cell is a main cell, and the other cell is a secondary cell. For example, the first cell is a primary cell and the second cell is a secondary cell. Or the first cell is a secondary cell and the second cell is a primary cell. The terminal device can establish a connection with the first cell and the second cell simultaneously through the CA, so that the two cells serve one terminal device simultaneously. Of course, the terminal device may also aggregate more cells, and the embodiment of the present application is not limited. As shown in fig. 2, in practical applications, an access network device may include more than two cells, and the embodiment of the present application takes two cells as an example. The first cell may perform cross-carrier scheduling through the second cell, and certainly, the second cell may also perform cross-carrier scheduling through the first cell. When a first cell performs cross-carrier scheduling through a second cell, an access network device transmits a Physical Downlink Control Channel (PDCCH) through the second cell, and transmits a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH through the first cell.
The access network device related in this embodiment is an entity for transmitting or receiving a signal on a network side, and may be configured to perform interconversion between a received air frame and an Internet Protocol (IP) packet, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network and the like. The access network device may also coordinate management of attributes for the air interface. For example, the access network device may be an evolved Node B (eNB or e-NodeB) in LTE, a new radio controller (NR controller), a enode B (gNB) in 5G system, a centralized network element (centralized unit), a new radio base station, a radio remote module, a micro base station, a relay (relay), a distributed network element (distributed unit), a reception point (TRP) or a Transmission Point (TP), or any other radio access device, but the embodiment of the present invention is not limited thereto.
The terminal device referred to in the embodiments of the present application is an entity for receiving or transmitting signals at a user side. The terminal device may be a device providing voice and/or data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. The terminal device may also be other processing devices connected to the wireless modem. The terminal device may communicate with a Radio Access Network (RAN). A terminal device may also be referred to as a wireless terminal, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a user device (user device), or a user equipment (user equipment, UE), among others. The terminal equipment may be mobile terminals such as mobile telephones (otherwise known as "cellular" telephones) and computers having mobile terminals, e.g. portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, which exchange language and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common terminal devices include, for example: the mobile terminal may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), a vehicle, a roadside device, an aircraft, a wearable device, such as a smart watch, a smart band, a pedometer, or the like, but the embodiment of the present disclosure is not limited thereto. The communication method and the related device provided by the present application are described in detail below.
Currently, the maximum number of CBGs in each TB configured for the first cell and the second cell is different, and therefore, the number of bits of the CBGTI of the first cell is different from that of the CBGTI of the second cell. This results in that when the first cell performs cross-carrier scheduling through the second cell, the access network device cannot use the CBGIT of the second cell to indicate the CBG to be transmitted by the first cell. Therefore, in the prior art, the first cell cannot perform cross-carrier scheduling through the second cell, that is, in the prior art, cross-carrier scheduling cannot be performed between the secondary cell and the primary cell.
In order to implement cross-carrier scheduling between a secondary cell and a primary cell, embodiments of the present application provide a cross-carrier scheduling method and a communication apparatus, and the following further describes in detail the cross-carrier scheduling method and the communication apparatus provided in embodiments of the present application:
referring to fig. 3, fig. 3 is a schematic diagram of a cross-carrier scheduling method according to an embodiment of the present disclosure. As shown in fig. 3, the cross-carrier scheduling method includes operations 310 to 370 as follows. The method shown in fig. 3 may be executed by a main body which is an access network device and a terminal device, or the main body may be a chip in the access network device and a chip in the terminal device. Fig. 3 illustrates an implementation subject of the method, which is an access network device and a terminal device. Wherein:
310. the access network device determines a first number of bits of first code block group transmission information CBGTI for the first cell.
In a possible implementation manner, before the access network device determines the first bit number of the first code block group transmission information CBGTI of the first cell, after a high-level signaling of the access network device may configure the maximum number of CBGs included in one TB of the first cell, the access network device may determine, according to the maximum number of CBGs, the bit number of the CBGTI corresponding to the first cell.
320. And the access network equipment determines a second bit number of a second CBGTI of a second cell, and the first cell carries out cross-carrier scheduling through the second cell.
In a possible implementation manner, before the access network device determines the second bit number of the second CBGTI of the second cell, after the high-level signaling of the access network device may configure the maximum number of CBGs included in one TB of the second cell, the access network device may determine the second bit number of the CBGTI corresponding to the second cell according to the maximum number of CBGs.
330. And the access network equipment generates a second CBGTI, wherein the code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number.
After the first bit number of the first CBGTI of the first cell and the second bit number of the second CBGTI of the second cell are determined, the access network device may generate the second CBGTI, and determine, according to the first bit number and the second bit number, a CBG of the first cell corresponding to each bit in the second CBGTI.
Specifically, each of the first N1 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000081
CBGs, where N1= mod (K1, K2), K1 is the first number of bits, and K2 is the second number of bits. The first N1 bits are denoted as N 1 ,0≤n 1 <N1, each of the first N1 bits has a CBG index of
Figure BDA0002408001780000082
And each of the last N2 bits in the second CBGTI corresponds to a first cell
Figure BDA0002408001780000083
CBGs, where N2= K2-mod (K1, K2). The last N2 bits are denoted as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000084
Where mod (K1, K2) denotes that K1 takes the remainder of K2, e.g., mod (10, 3) =1, mod (8, 2) =0.
Figure BDA0002408001780000085
Meaning that the quotient of K1 divided by K2 is rounded up, e.g.
Figure BDA0002408001780000086
Figure BDA0002408001780000087
Meaning that the quotient of K1 divided by K2 is rounded down, e.g.
Figure BDA0002408001780000088
For example, the first bit number K1 is 6, and the second bit number K2 is 4, that is, the CBGTI of the first cell is 6 bits, and the second CBGTI of the second cell is 4 bits, and by the conversion method of the correspondence relationship, it is possible to realize that the 6 CBGs of the first cell are corresponded by the 4 bits of the second CBGTI. When K1=6 and K2=4, each bit of the first N1= mod (6, 4) =2 bits in the second CBGTI corresponds to the first cell's cell
Figure BDA0002408001780000089
And (5) CBG. First N1= mod (6, 4) =2 expressed as N 1 ,0≤n 1 <2. When n is 1 When the value is not less than 0, the reaction time is not less than 0,
Figure BDA00024080017800000810
is {0,1}, i.e., the CBG of the first cell corresponding to the first bit of the second CBGTI is CBG0 and CBG1. When n is 1 When the ratio is not less than 1,
Figure BDA00024080017800000811
the value is {2,3}, i.e., the CBG of the first cell corresponding to the second bit of the second CBGTI is CBG2 and CBG3.
And each of the last N2= K2-mod (K1, K2) =2 bits of the second CBGTI corresponds to a first cell
Figure BDA00024080017800000812
CBG, the last N2 bits are denoted as N 2 ,2≤n 2 <4. When n is 2 When the ratio is not less than =2,
Figure BDA00024080017800000813
is {4}, i.e., the CBG of the first cell corresponding to the third bit of the second CBGTI is CBG4. When n is 2 When the ratio is not less than =3,
Figure BDA0002408001780000091
is {5}, i.e., the CBG of the first cell corresponding to the fourth bit of the second CBGTI is CBG5.
The first number of bits and the second number of bits have three relationships, i.e., the first number of bits is less than the second number of bits, the first number of bits is equal to the second number of bits, and the first number of bits is greater than the second number of bits. In the above example, the first number of bits is larger than the second number of bits.
In a possible implementation, if the first number of bits is equal to the second number of bits, the second CBGTI is substantially identical to the first CBGTI's correspondence to the CBG of the first cell by the translation of the correspondence of the method. That is, when the first number of bits is equal to the second number of bits, the access network device may not perform the conversion of the correspondence relationship, or may perform the conversion.
In a possible implementation, if the first number of bits is smaller than the second number of bits, a situation may occur in which some bits of the second CBGTI do not correspond to the CBG of the first cell. For example, if the first number of bits is 4 and the second number of bits is 6, i.e., K1=4 and K2=6, then it can be calculated that each bit of the first N1= mod (4, 6) =4 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000092
Each of the last N2= K2-mod (K1, K2) =2 bits of CBG, second CBGTI for the first cell
Figure BDA0002408001780000093
And (5) CBG. That is, when the first number of bits is smaller than the second number of bits, the first number of bits in the second CBGTI may directly correspond to the CBG of the first cell one to one, and the part of the second CBGTI that is greater than the first CBGTI does not have the function of corresponding to the CBG of the first cell. The access network device may not perform the conversion of the corresponding relationship, or may perform the conversion, but the results obtained by the access network device and the access network device are the same, and the embodiment of the present application is not limited.
340. And the access network equipment sends the second CBGTI to the terminal equipment through the second cell. Correspondingly, the terminal equipment receives the second CBGTI sent by the access network equipment to the terminal equipment through the second cell.
The CBGTI is included in Downlink Control Information (DCI), and the access network device may send the DCI carrying the second CBGTI to the terminal device through a PDCCH of the second cell. The DCI also includes a carrier indication, and when cross-carrier scheduling is configured, the information and may indicate a component carrier to which the DCI is directed. In this embodiment, the component carrier indicated by the DCI is a PDSCH of the first cell. That is, the access network device sends scheduling information of the first cell to the terminal device through the second cell, where the scheduling information of the first cell includes the DCI, and the scheduling information may instruct the terminal device to receive related data on the PDSCH of the first cell.
350. The terminal device determines a first bit number of first code block group transmission information CBGTI of the first cell.
In a possible implementation manner, the terminal device may further receive, from the first cell, the maximum number of CBGs included in each TB of the high-layer signaling configuration of the first cell, and receive, from the second cell, the maximum number of CBGs included in each TB of the high-layer signaling configuration of the second cell. The number of bits of the CBGTI may be the same as the maximum number of CBGs contained per TB. The terminal device may determine the first number of bits based on the maximum number of the first cell.
360. And the terminal equipment determines a second bit number of a second CBGTI of a second cell, and the first cell carries out cross-carrier scheduling through the second cell.
The terminal device may determine the second bit number of the second CBGTI according to the maximum number of CBGs included in each TB configured by the higher layer signaling of the second cell.
370. And the terminal equipment determines the CBG of the first cell corresponding to each bit in the second CBGTI based on the first bit number and the second bit number.
After the terminal device determines the CBG of the first cell corresponding to each bit in the second CBGTI, it can know, through the second CBGTI, which CBGs the access network device has sent to the terminal device, or which CBGs need to be sent to the access network device. For example, the terminal device sends a hybrid automatic repeat request acknowledgement (HARQ-ACK) to the access network device, where the HARQ-ACK may request the access network device to retransmit a CBG corresponding to a CB in which the terminal device fails to decode, and after receiving the second CBGTI, the terminal device may determine, according to the second CBGTI, which CBGs are included in a CBG retransmitted by the access network device through the PDSCH in the first cell, and for example, when there is a CB in which decoding fails in a TB received by the access network device from the terminal device, may tell, through the second CBGTI, that the terminal device needs to send a CBG corresponding to the CB in which decoding fails again.
By the embodiment of the application, the first cell performs cross-carrier scheduling through the second cell, and the access network device may determine a first bit number of a first CBGTI of the first cell and a second bit number of a second CBGTI of the second cell, and generate the second CBGTI. The access network device may determine the CBG of the first cell corresponding to each bit in the second CBGTI according to the first number of bits and the second number of bits. After the access network device sends the second CBGTI to the terminal device through the second cell, the access network device may indicate which CBGs are transmitted by the terminal device on the first cell. By the method, the problem that the CBGIT of the second cell cannot be used for indicating the CBG to be sent by the first cell due to the fact that the bit number of the CBGTI of the first cell is different from that of the CBGTI of the second cell is solved, and cross-carrier scheduling between the first cell and the second cell is achieved.
Referring to fig. 4, fig. 4 is a schematic unit diagram of a communication device according to an embodiment of the present disclosure. The communication apparatus shown in fig. 4 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 3. The apparatus may be an access network device, an apparatus in the access network device, or an apparatus capable of being used with the access network device. The logical structure of the apparatus may include: communication unit 410, processing unit 420. Wherein:
the embodiment of the application provides a communication device, which is applied to access network equipment, and the device comprises:
a processing unit 420, configured to determine a first number of bits of first code block group transmission information CBGTI of the first cell;
the processing unit 420 is further configured to determine a second bit number of a second CBGTI of a second cell, where the first cell performs cross-carrier scheduling through the second cell;
the processing unit 420 is further configured to generate the second CBGTI, where a code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number;
a communication unit 410, configured to send the second CBGTI to the terminal device through the second cell.
In one possible implementation, each of the first N1 bits in the second CBGTI corresponds to a cell of the first cell
Figure BDA0002408001780000114
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one possible implementation, the first N1 bits are denoted as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000111
In a possible implementation manner, each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000112
CBG, said N2= K2-mod (K1, K2).
In one possible implementation, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000113
Referring to fig. 4, fig. 4 is a schematic unit diagram of a communication device according to an embodiment of the present disclosure. The communication apparatus shown in fig. 4 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 3. The device may be a terminal device, or a device in the terminal device, or a device capable of being used in cooperation with the terminal device. The logical structure of the apparatus may include: communication unit 410, processing unit 420. Wherein:
a communication unit 410, configured to receive second code block group transmission information CBGTI that is sent by an access network device to a terminal device through a second cell;
a processing unit 420 configured to determine a first number of bits of a first CBGTI of a first cell;
the processing unit 420 is further configured to determine a second bit number of a second CBGTI of a second cell, where the first cell performs cross-carrier scheduling through the second cell;
the processing unit 420 is further configured to determine a CBG of the first cell corresponding to each bit in the second CBGTI based on the first number of bits and the second number of bits.
In one possible implementation, each of the first N1 bits in the second CBGTI corresponds to a cell of the first cell
Figure BDA0002408001780000124
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one possible implementation, the first N1 bits are denoted as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000121
In a possible implementation manner, each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000122
CBG, said N2= K2-mod (K1, K2).
In one possible implementation, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000123
Referring to fig. 5, fig. 5 is a simplified schematic diagram of a physical structure of a communication device according to an embodiment of the present disclosure, where the device includes a processor 510, a memory 520, and a communication interface 530, and the processor 510, the memory 520, and the communication interface 530 are connected by one or more communication buses.
The processor 510 is configured to support the reward mechanism modifying means to perform the corresponding functions of the method of figure 3. The processor 510 may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof.
The memory 520 is used to store program codes and the like. Memory 520 may include volatile memory (volatile memory), such as Random Access Memory (RAM); the memory 520 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD); the memory 520 may also comprise a combination of memories of the kind described above.
Communication interface 530 is used to transmit and receive data, information, messages, etc., and may also be described as a transceiver, transceiving circuitry, etc. For example, the communication interface 530 is configured to send the second CBGTI to the terminal device through the second cell, or the communication interface 530 is configured to receive the second code block group transmission information CBGTI and the like sent by the access network device to the terminal device through the second cell.
In an embodiment of the present invention, when the communication apparatus is applied to an access network device, the processor 510 may call the program code stored in the memory 520 to perform the following operations:
in one possible implementation, processor 510 invokes program code stored in memory 520 to determine a first number of bits of a first code block group transmission information CBGTI for a first cell; determining a second bit number of a second CBGTI of a second cell, wherein the first cell carries out cross-carrier scheduling through the second cell; generating the second CBGTI, wherein the code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first bit number and the second bit number; control communication interface 530 sends the second CBGTI to the terminal device via the second cell.
In one possible implementation, each of the first N1 bits in the second CBGTI corresponds to a first cell
Figure BDA0002408001780000133
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one possible implementation, the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000131
In a possible implementation manner, each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000134
CBG, said N2= K2-mod (K1, K2).
In one possible implementation, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000132
In an embodiment of the present invention, when the communication apparatus is applied to a terminal device, the processor 510 may call the program code stored in the memory 520 to perform the following operations:
in a possible implementation manner, the control communication interface 530 receives second code block group transmission information CBGTI sent by the access network device to the terminal device through the second cell; processor 510 invokes program code stored in memory 520 to determine a first number of bits for a first CBGTI for a first cell; determining a second bit number of a second CBGTI of a second cell, and carrying out cross-carrier scheduling on the first cell through the second cell; and determining the CBG of the first cell corresponding to each bit in the second CBGTI based on the first bit number and the second bit number.
In one possible implementation, each of the first N1 bits in the second CBGTI corresponds to a first cell
Figure BDA0002408001780000135
CBGs, where N1= mod (K1, K2), K1 being a first number of bits and K2 being a second number of bits.
In one possible implementation, the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure BDA0002408001780000141
In a possible implementation manner, each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure BDA0002408001780000142
CBG, said N2= K2-mod (K1, K2).
In one possible implementation, the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of CBG corresponding to each bit in the last N2 bits is
Figure BDA0002408001780000143
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The units in the processing equipment of the embodiment of the invention can be merged, divided and deleted according to actual needs.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, storage Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (14)

1. A cross-carrier scheduling method is applied to access network equipment, and comprises the following steps:
determining a first bit number of first code block group transmission information CBGTI of a first cell;
determining a second bit number of a second CBGTI of a second cell, wherein the first cell carries out cross-carrier scheduling through the second cell;
generating the second CBGTI, where a code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first number of bits and the second number of bits;
sending the second CBGTI to a terminal device through the second cell;
each bit of the first N1 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000013
A CBG, said N1= mod (K1, K2), said K1 beingThe first number of bits and K2 is the second number of bits;
each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000014
CBG, said N2= K2-mod (K1, K2).
2. The method of claim 1, wherein the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure FDA0003859921590000011
3. The method of claim 1, wherein the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of the CBG corresponding to each bit in the last N2 bits is
Figure FDA0003859921590000012
4. A cross-carrier scheduling method is applied to a terminal device, and comprises the following steps:
receiving second code block group transmission information CBGTI sent by the access network equipment to the terminal equipment through a second cell;
determining a first bit number of a first CBGTI of a first cell;
determining a second bit number of the second CBGTI of the second cell, wherein the first cell carries out cross-carrier scheduling through the second cell;
determining a CBG of the first cell corresponding to each bit in the second CBGTI based on the first number of bits and the second number of bits;
each bit of the first N1 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000021
CBGs, N1= mod (K1, K2), K1 being the first number of bits, and K2 being the second number of bits;
each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000022
CBG, said N2= K2-mod (K1, K2).
5. The method of claim 4, wherein the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure FDA0003859921590000023
6. The method of claim 4, wherein the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of the CBG corresponding to each bit in the last N2 bits is
Figure FDA0003859921590000024
7. A communications apparatus, comprising:
a processing unit, configured to determine a first bit number of first code block group transmission information CBGTI of a first cell;
the processing unit is further configured to determine a second bit number of a second CBGTI of a second cell, where the first cell performs cross-carrier scheduling through the second cell;
the processing unit is further configured to generate the second CBGTI, where a code block group CBG of the first cell corresponding to each bit in the second CBGTI is determined based on the first number of bits and the second number of bits;
a communication unit, configured to send the second CBGTI to a terminal device through the second cell;
each bit of the first N1 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000025
CBGs, said N1= mod (K1, K2), said K1 being said first number of bits, said K2 being said second number of bits;
each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000026
CBG, said N2= K2-mod (K1, K2).
8. The apparatus of claim 7, wherein the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure FDA0003859921590000031
9. The apparatus of claim 7, wherein the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of the CBG corresponding to each bit in the last N2 bits is
Figure FDA0003859921590000032
10. A communications apparatus, comprising:
the communication unit is used for receiving second code block group transmission information CBGTI sent by the access network equipment to the terminal equipment through a second cell;
a processing unit configured to determine a first number of bits of a first CBGTI of a first cell;
the processing unit is further configured to determine a second bit number of a second CBGTI of a second cell, where the first cell performs cross-carrier scheduling through the second cell;
the processing unit is further configured to determine a CBG of the first cell corresponding to each bit in the second CBGTI based on the first number of bits and the second number of bits;
each bit of the first N1 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000033
CBGs, N1= mod (K1, K2), K1 being the first number of bits, and K2 being the second number of bits;
each bit of the last N2 bits in the second CBGTI corresponds to the first cell
Figure FDA0003859921590000034
CBG, said N2= K2-mod (K1, K2).
11. The apparatus of claim 10, wherein the first N1 bits are represented as N 1 ,0≤n 1 <N1, the index of the CBG corresponding to each bit in the first N1 bits is
Figure FDA0003859921590000035
12. The apparatus of claim 10, wherein the last N2 bits are represented as N 2 ,N1≤n 2 <K2, the index of the CBG corresponding to each bit in the last N2 bits is
Figure FDA0003859921590000036
13. A communications apparatus comprising a processor, a memory and a communications interface, the processor, the memory and the communications interface being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the cross-carrier scheduling method of any of claims 1 to 3 or the cross-carrier scheduling method of any of claims 4 to 6.
14. A computer readable storage medium having stored thereon one or more instructions adapted to be loaded by a processor and to perform a cross-carrier scheduling method according to any of claims 1 to 3 or a cross-carrier scheduling method according to any of claims 4 to 6.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104272808A (en) * 2012-05-10 2015-01-07 株式会社Ntt都科摩 Wireless communication system, wireless base station device, user terminal and communication control method
CN109474405A (en) * 2017-09-08 2019-03-15 华为技术有限公司 Method of counting, apparatus and system in multicarrier system

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Publication number Priority date Publication date Assignee Title
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104272808A (en) * 2012-05-10 2015-01-07 株式会社Ntt都科摩 Wireless communication system, wireless base station device, user terminal and communication control method
CN109474405A (en) * 2017-09-08 2019-03-15 华为技术有限公司 Method of counting, apparatus and system in multicarrier system

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