DCI size alignment method and DCI size alignment device

Abstract

The embodiments of the present application disclose a DCI size alignment method and device, which belongs to the technical field of communication. The method includes: a communication device determines whether the number of DCI sizes of a plurality of DCI formats meets a DCI size budget; if not, performs DCI size alignment operations on the plurality of DCI formats until it meets according to a DCI size alignment rule, the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning a first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning a first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning a first DCI format with a group common DCI format in a CSS.

Description

[Technical field]

[0001] The present application relates to the technical field of communications, and in particular to a method and device for aligning size of Downlink Control Information (DCI). [Background technology]

[0002] At least two new DCI formats have been introduced in New Radio (NR) to improve the flexibility of scheduling certain services, one example being the new MBS DCI format for scheduling Multicast Broadcast Service (MBS).

[0003] In NR, when a new DCI format is introduced, the DCI size budget cannot be increased in order to maintain the complexity of the blind detection of the terminal. Therefore, how to perform DCI size alignment so that the DCI sizes of all DCI formats in the terminal do not exceed the DCI size budget is a technical issue that needs to be resolved as soon as possible. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a method and device for DCI size alignment, which can solve the problem that the conventional technology cannot perform DCI size alignment and affects DCI transmission. [Means for solving the problem]

[0005] In a first aspect, a DCI size alignment method is provided, the method including: a step of a communication device determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget; and if the DCI size budget is not met, a step of performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, wherein the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS.

[0006] In a second aspect, a DCI size alignment device is provided, comprising: a determination module for determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget; and a DCI size alignment module for performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule if the DCI size budget is not met, until the DCI size budget is met, wherein the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS.

[0007] In a third aspect, there is provided a terminal including a processor, a memory, and programs or commands stored in the memory and executable by the processor, the programs or commands implementing a method according to the first aspect when executed by the processor.

[0008] In a fourth aspect, there is provided a terminal including a processor and a communication interface, wherein the processor is for determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, wherein the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS.

[0009] In a fifth aspect, there is provided a network side device including a processor, a memory, and a program or command stored in the memory and executable by the processor, the program or command realizing the method according to the first aspect when executed by the processor.

[0010] In a sixth aspect, there is provided a network side device including a processor and a communication interface, wherein the processor is for determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, and the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS.

[0011] In a seventh aspect, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implements the method according to the first aspect.

[0012] In an eighth aspect, there is provided a chip including a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute programs or commands to implement the method according to the first aspect.

[0013] In a ninth aspect, there is provided a computer program / program product stored on a non-transitory storage medium and adapted to implement the method according to the first aspect when executed by at least one processor.

[0014] In a tenth aspect, there is provided a communication system including a terminal capable of executing the method according to the first aspect, and a network side device capable of executing the method according to the first aspect. Effect of the Invention

[0015] In the embodiment of the present application, when a new DCI format is introduced, the communication device can satisfy the DCI size budget by performing a DCI size alignment operation on multiple DCI formats according to a DCI size alignment rule. The embodiment of the present application is favorable for maintaining the consistency of understanding between the network side device and the terminal, and is favorable for realizing effective transmission of DCI, and is favorable for reducing the complexity of blind detection of the terminal by making the number of DCI sizes of multiple DCI formats satisfy the DCI size budget, and reducing the resource cost of the terminal. [Brief description of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application; [Diagram 2] 2 is a schematic flow chart of a DCI size alignment method according to an embodiment of the present application; [Diagram 3] 1 is a structural schematic diagram of a DCI size alignment device according to an embodiment of the present application; [Figure 4] 1 is a structural schematic diagram of a communication device according to an embodiment of the present application; [Diagram 5] FIG. 2 is a structural schematic diagram of a terminal according to an embodiment of the present application; [Figure 6] FIG. 2 is a structural schematic diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments, and all other embodiments that a person skilled in the art can obtain based on the embodiments of the present application shall fall within the scope of protection of the present application.

[0018] The terms "first," "second," and the like in the specification and claims of the embodiments of the present application are not intended to describe a particular order or precedence, but are intended to distinguish between similar objects. However, the terms used in this manner may be interchangeable in some cases, so that the embodiments of the present application may be practiced in an order other than that shown or described herein. In the specification and claims, "and / or" refers to at least one of the objects connected, and the " / " symbol generally indicates that the related objects before and after are in an "or" relationship.

[0019] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. In the embodiments of the present application, the terms "system" and "network" are often used interchangeably, and the techniques described herein may be used in the above systems and wireless communication technologies, or in other systems and wireless communication technologies. However, for illustrative purposes, the following description will describe a New Radio (NR) system, and NR terminology will be used in most of the following description, but these technologies may be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0020] FIG. 1 is a schematic diagram showing a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 is also called a terminal device or a user terminal (User Equipment, UE). The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (also called a notebook computer), a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device including a bracelet, an earphone, glasses, etc., or a vehicle-mounted device (VUE), a pedestrian user equipment (PUE), etc. In the embodiment of the present application, the specific type of the terminal 11 is not limited. The network side device 12 may be a base station or a core network. The base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or other suitable terms in the field. As long as the same technical effect can be achieved, the base station is not limited to a specific technical term. Note that in the embodiments of this application, only a base station in an NR system is taken as an example, and the specific type of the base station is not limited.The core network devices are: Core Network Node, Core Network Function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF or L-NEF), Binding Support Function (BSF), Application Function (Application Repository ... The core network device may include at least one of the following, but is not limited to: A / D Function (AF), etc. In the embodiments of the present application, only the core network device in the NR system is described as an example, but the specific type of the core network device is not limited.

[0021] Next, the DCI size alignment method and device provided by the embodiments of the present application will be described in detail with reference to the drawings according to several embodiments and their application scenarios.

[0022] As shown in Fig. 2, an embodiment of the present application provides a DCI size alignment method 200. The method can be performed by a communication device, in other words, the method can be performed by software or hardware installed in the communication device. The communication device may be a terminal or a network side device. The method includes the following steps:

[0023] In S202, the communication device determines whether the number of DCI sizes of a plurality of DCI formats meets a DCI size budget.

[0024] In each embodiment of the present application, meeting the DCI size budget means: Condition 1: The total size of DCIs configured in the scheduled cell and monitored by the terminal does not exceed 4; Condition 2: At least one of the following may be satisfied: the sum of the sizes of DCIs scrambled by a Cell-Radio Network Temporary Identity (C-RNTI) and / or a Group-Radio Network Temporary Identity (G-RNTI) located in a scheduled cell and monitored by a terminal does not exceed 3.

[0025] The plurality of DCI formats may be all DCI formats that are configured by a network side device to a terminal through Radio Resource Control (RRC) signaling and that need to be monitored by the terminal.

[0026] Optionally, the multiple DCI formats include a first DCI format, which may be a DCI format for scheduling an MBS newly introduced in the NR system. For example, the first DCI format may be a DCI format for scheduling a group-common physical downlink shared channel (PDSCH), etc. The first DCI format may include DCI format A, DCI format B, etc., which will be described in the following embodiments.

[0027] In S204, if the DCI size budget is not met, a DCI size alignment operation is performed on the multiple DCI formats according to a DCI size alignment rule until the DCI size budget is met.

[0028] The DCI size alignment rule may include at least one of the following 1) to 5).

[0029] 1) Align the first DCI format with DCI 0_0 and / or DCI 1_0 in a common search space (CSS) so that the DCI size of the first DCI format is equal to at least one of the DCI sizes of DCI 0_0 and DCI 1_0 in the CSS.

[0030] 2) Align the first DCI format with DCI 1_1 and / or DCI 0_1 in the user specific search space (UE Specific Search Space, USS) so that the DCI size of the first DCI format is equal to at least one of the DCI sizes of DCI 1_1 and DCI 0_1 in the USS.

[0031] 3) Align the first DCI format with DCI 1_2 and / or DCI 0_2 in the USS so that the DCI size of the first DCI format is equal to at least one of the DCI sizes of DCI 1_2 and DCI 0_2 in the USS.

[0032] 4) Align DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in the USS so that the DCI size including at least one of DCI 1_2 and DCI 0_2 is equal to the DCI size including at least one of DCI 1_1 and DCI 0_1.

[0033] 5) The first DCI format is aligned with the (other) group-common DCI format in the CSS so that the DCI size of the first DCI format is equal to the DCI size of the (other) group-common DCI format. The first DCI format may also belong to the group-common DCI format. The group-common DCI format in this example may include DCI 2_0, DCI 2_1, DCI 2_2, DCI 2_3, ..., DCI 2-6, etc. The DCI of the group-common DCI format is used for simultaneous control of terminals in one group and is not usually used for scheduling data. For a method of aligning the first DCI format with the group-common DCI format in the CSS in this embodiment, the description of the related embodiment of 1) or 2) above may be referred to.

[0034] Specifically, for example, the group-common DCI other than the first DCI format includes DCI for controlling groups such as DCI 2_1 and DCI 2_2. In this embodiment, a zero-filling or truncation operation is performed on the first DCI format to make the DCI size of the first DCI format equal to the DCI size of DCI 2_1 and the DCI size of DCI 2_2.

[0035] Furthermore, for example, the group-common DCIs other than the first DCI format include, for example, DCI 2_1 and DCI 2_2. In this embodiment, a zero-filling or truncation operation is performed on DCI 2_1, and a zero-filling or truncation operation is performed on DCI 2_2, respectively, to make the DCI size of DCI 2_1 equal to the DCI size of the first DCI format, and make the DCI size of DCI 2_2 equal to the DCI size of the first DCI format.

[0036] Furthermore, for example, it is not desirable for a terminal to have a DCI size in which a network side device arranges other group common DCI formats different from the DCI size of the first DCI format. That is, the DCI size in which a network side device arranges other group common DCI formats is made equal to the DCI size of the first DCI format.

[0037] When S204 is executed, the DCI size alignment operation may be executed for a plurality of DCI formats by at least one of 1) to 5) above until the DCI size budget is satisfied. For example, if the DCI size budget is not satisfied after the execution of 4) above is finished, 1) is further executed. If the DCI size budget is satisfied, the process ends. If the DCI size budget is still not satisfied, 2) or 3) etc. may be further executed until the DCI size budget is satisfied.

[0038] Furthermore, when executing S204, other DCI size alignment rules than the above 1) to 5) may be adopted. For example, the communication device first aligns DCI 0_0 and DCI 1_0 in the CSS so that the DCI size of DCI 0_0 and the DCI size of DCI 1_0 are equal (i.e., other DCI size alignment rules). Then, the communication device executes the above 1) so that the DCI size of the first DCI format is equal to both the DCI size of DCI 0_0 and the DCI size of DCI 1_0 in the CSS. When the DCI size budget is met, the process ends.

[0039] As described above, the DCI size alignment method provided by the embodiment of the present application may be performed by the network side device or by the terminal. Next, the distinction between the two will be described.

[0040] In the case of a network side device, the network side device may configure the plurality of DCI formats to the terminal through RRC signaling. By performing the DCI size alignment method, the network side device first determines whether the number of DCI sizes of the plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performs a DCI size alignment operation on the plurality of DCI formats according to a DCI size alignment rule, and reduces the sum of different DCI sizes until the DCI size budget is met.

[0041] If the DCI size budget is satisfied, the network side device transmits the DCI to the terminal according to the DCI size after the DCI size alignment operation.

[0042] In the case of a terminal, the terminal may determine a plurality of DCI formats that need to be monitored through RRC signaling. By performing the DCI size alignment method, the terminal first determines whether the number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performs a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule, and reduces the sum of different DCI sizes until the DCI size budget is met.

[0043] When it is determined that the DCI size budget is satisfied, the terminal may determine a DCI size to be monitored within the DCI size budget, and monitor a DCI format after the DCI size alignment operation according to the determined DCI size.

[0044] According to the DCI size alignment method provided by the embodiment of the present application, when a new DCI format is introduced, the communication device can satisfy the DCI size budget by performing DCI size alignment operations on multiple DCI formats according to the DCI size alignment rule. The embodiment of the present application is favorable for maintaining the consistency of understanding between the network side device and the terminal, and is favorable for realizing effective transmission of DCI, and is favorable for reducing the complexity of blind detection of the terminal by making the number of DCI sizes of multiple DCI formats satisfy the DCI size budget, thereby reducing the resource cost of the terminal.

[0045] The DCI size arrangement rules have been briefly explained using 1) to 5) provided in the embodiment shown in Fig. 2. Next, the DCI size arrangement rules will be explained using methods 1 to 4.

[0046] Method 1 is to align the first DCI format with fallback DCI in the CSS. The fallback DCI here may include DCI 0_0 and DCI 1_0.

[0047] Aligning the first DCI format described in embodiment 200 with DCI 0_0 and / or DCI 1_0 in the CSS includes at least one of the following three:

[0048] a) If the DCI size of the first DCI format is smaller than the first value, zero padding is performed on the first DCI format so that the DCI size of the first DCI format becomes equal to the first value.

[0049] The zero-padding process described in each embodiment of the present application may be, specifically, tail zero-padding or head zero-padding of the original DCI. The truncation process described in each embodiment of the present application may be truncating the most significant bit (MSB) or the least significant bit (LSB) of a Frequency Domain Resource Assignment (FDRA) in the DCI.

[0050] b) If the DCI size of the first DCI format is larger than the first value, a truncation process is performed on the first DCI format so that the DCI size of the first DCI format and the first value become equal.

[0051] c) Perform zero-padding or truncation on DCI 0_0, and perform zero-padding or truncation on DCI 1_0 so that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to the DCI size of the first DCI format.

[0052] The first value described in each example above is the DCI size after alignment of DCI 0_0 and DCI 1_0 in the CSS.

[0053] The truncation process for the first DCI format described above may specifically truncate the Frequency Domain Resource Assignment (FDRA) domain of the first DCI format. After truncating the FDRA, the terminal may perform resource allocation in the Common Frequency Resource (CFR). The granularity of the resource allocation may be expanded to allow all the Physical Resource Block (PRB) resources in the CFR to be scheduled. For example, in the form of a Resource Indication Value (RIV), the granularity of the resource allocation may be X RBs determined by the number of bits of the truncated FDRA and the number of RBs included in the CFR. In the form of a bitmap, the size of the RBG may be increased, and similarly, the increased RBG size is determined by the number of bits of the truncated FDRA and the number of RBs included in the CFR.

[0054] To elaborate on the above method 1, a specific embodiment will be described below. The embodiment can be implemented by a communication device and includes the following steps:

[0055] At step 0, Determine the DCI size of DCI 0_0 in CSS, Determine the DCI size of DCI 1_0 in CSS, Determined the DCI size for DCI format A in CSS, hereafter sometimes abbreviated as size A.

[0056] Note that DCI format A described in the following embodiments and the first DCI format described in the above embodiment have the same meaning.

[0057] Optionally (this step may be omitted in case 2), adjust the DCI size of DCI 0_0 so that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to each other, and obtain size 1, which indicates the DCI sizes of DCI 0_0 and DCI 1_0 after alignment.

[0058] In this example, for example, tail zero padding is performed on DCI 0_0, or truncation processing (e.g., MSB truncation) is performed on the FDRA domain of DCI 0_0 so that the DCI sizes of DCI 0_0 and DCI 1_0 are equal (the bitwidth of the frequency domain resource assignment field in the DCI format 0_0 is reduced by truncating the first few most significant bits such that the size of DCI format 0_0 equals the size of the DCI format 1_0).

[0059] Step 2 can be divided into Case 1 and Case 2 as follows.

[0060] In case 1, if size A is smaller than size 1, DCI format A is padded with zeros to align the size of DCI format A with size 1. If size A is larger than size 1, DCI format A is truncated to align the size of DCI format A with size 1.

[0061] In case 2, the sizes of DCI 0_0 and DCI 1_0 are aligned with the size of DCI format A. For example, zero-padding or truncation is performed on DCI 0_0, and zero-padding or truncation is performed on DCI 1_0, so that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to the DCI size of DCI format A.

[0062] As a second method, the first DCI format (hereinafter, in some examples, DCI format A will be described as an example) is aligned with DCI 1_1 and / or 0_1 in the USS.

[0063] Aligning the first DCI format described in embodiment 200 with DCI 1_1 and / or DCI 0_1 in the USS includes: a) aligning DCI 1_1 and DCI 0_1 in the USS such that the DCI size of DCI 1_1 and the DCI size of DCI 0_1 are equal; b) if the DCI size budget is still not met, performing zero-padding or truncation processing on DCI 1_1, and performing zero-padding or truncation processing on DCI 0_1 so that the DCI sizes of DCI 1_1 and DCI 0_1 are equal to the DCI size of the first DCI format.

[0064] In addition, in the above a), a zero-filling operation may have been performed on DCI 1_1 or DCI 0_1 during the alignment of DCI 1_1 and DCI 0_1. In the above b), if it is necessary to perform a truncation process on DCI 1_1 or DCI 0_1, the zeros added in a) may be removed first.

[0065] Optionally, the aligning of the first DCI format with DCI 1_1 and / or DCI 0_1 in the USS includes aligning the second DCI format with the first DCI format so that the DCI size of the second DCI format is equal to the DCI size of the first DCI format, and if the DCI size budget is still not met, aligning the third DCI format with the first DCI format so that the DCI size of the third DCI format is equal to the DCI size of the first DCI format, wherein the second DCI format is DCI 1_1 or DCI 0_1, and the third DCI format is a DCI format other than the second DCI format among DCI 1_1 and DCI 0_1.

[0066] Optionally, the second DCI format is DCI 1_1, DCI 0_1, Of DCI 0_1 and DCI 1_1, the DCI size is smaller than and closest to the first DCI format, Of DCI 0_1 and DCI 1_1, the one that is closest to the DCI size of the first DCI format, Of DCI 0_1 and DCI 1_1, the DCI size is relatively small. Includes one of DCI 0_1 and DCI 1_1, whichever has the larger DCI size.

[0067] To elaborate on the above method 2, a specific embodiment will be described below, which can be implemented by a communication device and includes the following steps:

[0068] At step 0, Determine the DCI size of DCI 0_0 in CSS, Determine the DCI size of DCI 1_0 in CSS, By adjusting the size of DCI 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of DCI 0_0 and DCI 1_0 monitored in the CSS are aligned (e.g., by performing tail zero-filling if short and truncating the frequency domain resource allocation domain if long) to obtain Size 1 (CSS fallback).

[0069] In addition, "short" described in each embodiment of the present application may specifically refer to the number of bits of DCI (also called DCI size) being short. In each embodiment of the present application, "long" described in each embodiment of the present application may specifically refer to the number of bits of DCI (also called DCI size) being long.

[0070] In step 1, Determine the DCI size for DCI 0_0 in USS, Determine the DCI size for DCI 1_0 in USS, By adjusting the short DCI format, the sizes of DCI 0_0 and DCI 1_0 monitored in the USS are aligned (e.g., tail zero padding is performed on the short one) to obtain Size 2 (USS fallback).

[0071] In step 2, Determine the DCI size for DCI 0_1 in USS, Determine the DCI size of DCI 1_1 in USS, If DCI 0_1 monitored in USS is the same as DCI 0_0 / 1_0 in USS, add one 0 bit to the tail of DCI 0_1 to distinguish the DCI size and obtain Size 3(USS UL 0_1); When DCI 1_1 monitored in the USS is the same as DCI 0_0 / 1_0 in the USS, the DCI size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4(USS DL 1_1).

[0072] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0073] In step 2B (optionally, this step may be any step before step 3), the size of DCI format A, Size 7 (CSS DCI format A), is determined.

[0074] Step 3 ends if the DCI size budget requirement (in each cell, there are up to four DCI sizes, among which there are up to three DCI sizes for C-RNTI and / or g-RNTI) is met; otherwise, execute step 4.

[0075] If the DCI size budget requirement is not met in step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the USS fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in the USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in the CSS in step 0), i.e., Size 2 → Size 1.

[0076] In step 4B, if the DCI size budget is not met, align DCI sizes 0_2 and 1_2, i.e. align Size 5 and Size 6 (e.g., perform zero padding for short DCI formats), i.e. Size 5, Size 6 → size B.

[0077] In case 1, In step 4C, if the DCI size budget is not met, align DCI sizes 0_1 and 1_1, i.e. align Size 3 and Size 4 (e.g., perform zero padding for short DCI formats), i.e. Size 3, Size 4 → size C.

[0078] In step 4D, If the DCI size budget is not met, a zero-filling operation is performed on 0_1 and 1_1 output from 4c, and the sizes of DCI 0_1 and 1_1 are aligned with DCI A, i.e., Size C is changed to size 7, and size 3 and size 4 are changed to size 7.

[0079] In case 2, In step 4C, if the DCI size budget is not met, the DCI size of 0_1 or 1_1 (assuming DCI Y_1) is aligned with that of DCI format A, and Size 3 or Size 4 is changed to size 7.

[0080] DCI Y_1 is DCI 1_1, DCI 0_1, Of DCI 0_1 and DCI 1_1, the DCI size is smaller than and closest to the first DCI format, Of DCI 0_1 and DCI 1_1, the one that is closest to the DCI size of the first DCI format, Of DCI 0_1 and DCI 1_1, the DCI size is relatively small. It is determined by at least one of DCI 0_1 and DCI 1_1, whichever has a relatively larger DCI size.

[0081] In step 4D, If the DCI size budget requirement is not met, the size of DCI A is aligned with other DCI formats other than DCI Y_1 in 0_1 or 1_1, changing from Size 4 or Size 3 to size 7.

[0082] Method 3 aligns DCI format A with DCI 1_2 / 0_2 in USS.

[0083] Aligning the first DCI format described in embodiment 200 with DCI 1_2 and / or DCI format 0_2 in the USS includes: a) aligning DCI 1_2 and DCI 0_2 in the USS (e.g., by zero padding for short DCI formats) so that the DCI sizes of DCI 1_2 and DCI 0_2 are equal; b) if the DCI size budget is still not met, performing zero-padding or truncation processing on DCI 1_2 and zero-padding or truncation processing on DCI 0_2, respectively, so that the DCI sizes of DCI 1_2 and DCI 0_2 are equal to the DCI size of the first DCI format.

[0084] In addition, in the above a), a zero-filling operation may have been performed on DCI 1_2 or DCI 0_2 during the alignment of DCI 1_2 and DCI 0_2. In the above b), if it is necessary to perform a truncation process on DCI 1_2 or DCI 0_2, the zeros added in a) may be removed first.

[0085] Optionally, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in the USS includes aligning the third DCI format with the first DCI format such that a DCI size of the third DCI format is equal to a DCI size of the first DCI format, and if the DCI size budget is still not met, aligning the fourth DCI format with the first DCI format such that a DCI size of the fourth DCI format is equal to a DCI size of the first DCI format, where the third DCI format is DCI 1_2 or DCI 0_2, and the fourth DCI format is a DCI format other than the third DCI format among DCI 1_2 and DCI 0_2.

[0086] Optionally, the third DCI format is DCI 1_2, DCI 0_2, Of DCI 0_2 and DCI 1_2, the DCI size is smaller than and closest to the first DCI format, Of DCI 0_2 and DCI 1_2, the one that is closest to the DCI size of the first DCI format, Of DCI 0_2 and DCI 1_2, the DCI size is relatively small, Includes one of DCI 0_2 and DCI 1_2, whichever has the larger DCI size.

[0087] To elaborate on the above method 3, a specific embodiment will be described below. The embodiment can be implemented by a communication device, and includes the following steps:

[0088] At step 0, Determine the DCI size of DCI 0_0 in CSS, Determine the DCI size of DCI 1_0 in CSS, By adjusting the size of Format 0_0 (i.e., DCI Format 0_0, in the entire text, abbreviated as DCI 0_0, the same applies to other DCI formats), DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 (i.e., DCI 1_0) monitored in the CSS are aligned (tail zero-filling is performed if it is short, and truncation of the frequency domain resource allocation domain is performed if it is long) to obtain Size 1 (CSS fallback).

[0089] In step 1, Determine the DCI size for DCI 0_0 in USS, Determine the DCI size for DCI 1_0 in USS, By adjusting the short DCI format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0090] In step 2, Determine the DCI size for DCI 0_1 in USS, Determine the DCI size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0091] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0092] In step 2B (optionally this step may be any step before step 3), the size of DCI A, Size 7 (CSS DCI format A), is determined.

[0093] Step 3 ends if the DCI size budget (Size is up to 4 and Size for C-RNTI and / or g-RNTI is up to 3 in each cell) is met. Otherwise, execute step 4.

[0094] If the DCI size budget requirement is not met in step 4, In step 4A, remove the 0 added in step 2 (if performed), align the uss fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in USS in step 1 to match the size of Format 0_0 and Format 1_0 monitored in CSS in step 0), and change Size 2 to Size 1.

[0095] In case 1, In step 4B, if the DCI size budget is not met, the DCI sizes of 0_2 and 1_2 are aligned, and Size 5 and Size 6 are changed to size C.

[0096] In step 4B', If the DCI size budget is not met, a zero-filling operation is performed on 0_2 and / or 1_2 output from 4B, the sizes of DCI 0_2 and 1_2 are aligned with those of DCI A, and size C is changed to size 7.

[0097] In case 2, In step 4B, if the DCI size budget is not met, the size of DCI format A is aligned with 0_2 or 1_2 (assuming DCI Y_1) and changed from Size 5 / Size 6 to size 7.

[0098] DCI Y_2 is DCI 1_2, DCI 0_2, Of DCI 0_2 and DCI 1_2, the DCI size is smaller than and closest to the first DCI format, Of DCI 0_2 and DCI 1_2, the one that is closest to the DCI size of the first DCI format, Of DCI 0_2 and DCI 1_2, the DCI size is relatively small, It is determined by at least one of DCI 0_2 and DCI 1_2, whichever has a relatively larger DCI size.

[0099] In step 4B', If the DCI size budget is not met, the size of DCI A is aligned with other DCI formats other than DCI Y_2 in 0_2 or 1_2, changing from Size 6 / Size 5 to size 7.

[0100] In step 4C, if the DCI size budget is not met, DCI 0_1 and DCI 1_1 are aligned and Size 3 and Size 4 are changed to size B.

[0101] Method 4 is to align DCI 1_2 / DCI 0_2 and DCI 1_1 / DCI 0_1 in USS.

[0102] Aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in the USS described in embodiment 200 includes: aligning DCI 1_2 and DCI 0_2 in the USS such that the DCI size of DCI 1_2 and the DCI size of DCI 0_2 are equal; if the DCI size budget is still not met, aligning DCI 1_1 and DCI 0_1 in the USS such that the DCI size of DCI 1_1 and the DCI size of DCI 0_1 are equal; If the DCI size budget is still not met, aligning the aligned DCI 1_2 and DCI 0_2 with the aligned DCI 1_1 and DCI 0_1 (e.g., performing a zero-filling operation for a short DCI format, or a truncation operation for a long DCI format) so that the DCI sizes of DCI 1_2 and DCI 0_2 and the DCI sizes of DCI 1_1 and DCI 0_1 are all equal.

[0103] Optionally, among the aligned DCIs 0_2, 1_2, 0_1, and 1_1, DCIs 1_2 and DCI 0_2 include an indication bit, and DCIs 1_1 and DCI 0_1 include an indication bit (i.e., the aligned DCIs include an indication bit). The indication bit is for distinguishing between a fifth DCI format including DCIs 1_2 and DCI 0_2 and a sixth DCI format including DCIs 1_1 and DCI 0_1.

[0104] To elaborate on the above method 4, a specific embodiment will be described below. The embodiment can be implemented by a communication device, and includes the following steps:

[0105] At step 0, Determine the DCI size of DCI 0_0 in CSS, Determine the DCI size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0106] In step 1, Determine the DCI size for DCI 0_0 in USS, Determine the DCI size for DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0107] In step 2, Determine the DCI size for DCI 0_1 in USS, Determine the DCI size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0108] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0109] In step 2B (optionally, this step may be any step before step 3), the size of DCI A is determined to obtain Size 7 (CSS DCI format A).

[0110] Step 3 ends if the DCI size budget (Size is up to 4 and Size for C-RNTI and / or g-RNTI is up to 3 in each cell) is met. Otherwise, execute step 4.

[0111] In step 4, if the DCI size budget is not met (finally, the sizes of Format 0_0 and Format 1_0 monitored in CSS / USS are made to match), change Size 2 to Size 1.

[0112] In step 4A, remove the 0 added in step 2 (if performed), align the uss fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in CSS in step 0), and change Size 2 to Size 1.

[0113] In step 4B, if the DCI size budget is not met, DCI 0_2 and DCI 1_2 are aligned and Size 5 and Size 6 are changed to size C.

[0114] In step 4C, if the DCI size budget is not met, DCI 0_1 and DCI 1_1 are aligned and Size 3 and Size 4 are changed to size B.

[0115] In step 4D, if the DCI size budget is not met, align DCI 0_1 and DCI 1_1, and DCI 0_2 and DCI 1_2, i.e., Size B, Size C → size D.

[0116] For example, 0 may be added to the tail of a DCI with a small size, and one bit may be added to the head of each DCI format to indicate the DCI format in order to distinguish the DCI formats. That is, size D=size B / size C+1. Optionally, for the above methods 2, 3, and 4, it may be determined which of the methods 2, 3, and 4 to adopt based on at least one of the following.

[0117] In case 1, the DCI size is determined based on the DCI size of DCI 1_1, the DCI size of DCI 0_1, the DCI size of DCI 1_2, the DCI size of DCI 0_2, and the DCI size of the first DCI format. For example, the DCI size is determined based on the closest DCI size, or the DCI size that is closest to the DCI size of the first DCI format and smaller than the DCI size of the first DCI format.

[0118] In case 2, configuration is performed by higher layer signaling.

[0119] Thus, the method provided by each of the above embodiments further includes a step of determining the DCI size alignment rule based on at least one of the DCI size of DCI 1_1, the DCI size of DCI 0_1, the DCI size of DCI 1_2, the DCI size of DCI 0_2, the DCI size of the first DCI format, and configuration by higher layer signaling.

[0120] For example, the DCI size alignment rule is determined based on the seventh DCI format determination. DCI 1_1, DCI 0_1, DCI 1_2, DCI 0_2, Among DCI 0_1, 1_1, 0_2, and 1_2, the DCI size is smaller than that of the first DCI format and is closest to the first DCI format; The closest DCI size to the first DCI format, DCI 0_1, 1_1, 0_2, 1_2, whichever is smaller in DCI size; Includes one of DCI 0_1, 1_1, 0_2, 1_2, whichever has a relatively large DCI size.

[0121] Furthermore, the size of DCI format A (ie, the first DCI format) may be determined based on at least one of the following methods.

[0122] 1) determining each domain of DCI format A based on a parameter configuration of a common frequency domain resource (CFR), and further determining a size of DCI format A; or 2) The DCI size of DCI format A is directly configured by RRC.

[0123] Thus, the method provided by each of the above embodiments further includes determining a DCI size of the first DCI format based on at least one of the following:

[0124] 1) Based on the CFR parameters, the determined size of each domain of the first DCI format is arranged.

[0125] 2) Configuring by higher layer signaling. For example, configuring the DCI size of the first DCI format directly or configuring the size of at least one indication domain directly by higher layer signaling. The sizes of other indication domains are known to the terminal.

[0126] To explain in detail the DCI size alignment method provided by the embodiment of the present application, several specific examples will be described below.

[0127] Example 1 In this embodiment, the UE configures DCI formats 0_0, 1_0, 0_1, and 1_1 in the USS. DCI format A is configured in the CSS. DCI format A is for scheduling a group-common PDSCH (in other words, the RNTI corresponding to DCI format A is a group-common RNTI such as G-RNTI or G-CS-RNTI). The UE determines the size of the DCI format based on the following process.

[0128] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0129] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0130] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0131] In step 2B (optionally this step may be any step before step 3), the size of DCI A, Size 5 (CSS DCI format A), is determined.

[0132] Step 3 ends when the DCI size budget (Size is up to 4 and Size is up to 3 for C-RNTI and / or G-RNTI in each cell) is met. The DCI budget is The total size of DCIs placed and monitored in the cell does not exceed 4; It is necessary to satisfy both of the following: the sum of the sizes of DCIs configured and monitored in the cell, and scrambled by the C-RNTI and / or scrambled by the G-RNTI does not exceed 3.

[0133] If not, perform step 4.

[0134] In step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the fallback DCI in USS with the fallback DCI in CSS (adjust the size determination process of Format 0_0 and Format 1_0 monitored in USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in CSS in step 0) (Size 2 → Size 1).

[0135] In case 1, In step 4C, if the DCI size budget is not met, the DCI sizes of DCI 0-1 and DCI 1_1 are aligned (Size 3, Size 4 are changed to size C). In this way, the DCI size budget requirement is met.

[0136] In case 2, In step 4C, if the DCI size budget is not met, the sizes of DCI 0_1 or DCI 1_1 (assuming DCI Y_1) and DCI A are aligned (Size 3 or Size 4 → Size 5). In this way, the DCI size budget requirement is met.

[0137] DCI Y_1 is DCI 1_1, DCI 0_1, DCI smaller than size 5 and closest to size 5, The closest DCI to size 5, Between DCI 0_1 and DCI 1_1, the smaller size, It is determined by at least one of DCI 0_1 and DCI 1_1, whichever has a relatively large size.

[0138] Alternatively, this embodiment may be carried out by the following steps. The base station configures DCI size A so that the size of DCI size 1 matches the size of DCI size 1, or aligns DCI size A with the fallback DCI in the CSS.

[0139] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0140] In step 0A (optionally this step may be any previous step), determining the size of DCI A, Size 5 (CSS DCI format A); Align size of DCI A with size 1 by truncation (eg, truncation from the MSB of FDRA) or zero-filling (eg, before the tail or start position).

[0141] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0142] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0143] Step 3 ends when the DCI size budget (Size is up to 4 and Size is up to 3 for C-RNTI and / or G-RNTI in each cell) is met. The DCI budget is The total size of DCIs placed and monitored in the cell does not exceed 4; It is necessary to satisfy both of the following: the sum of the sizes of DCIs configured and monitored in the cell, and scrambled by the C-RNTI and / or scrambled by the G-RNTI does not exceed 3.

[0144] If not, perform step 4.

[0145] In step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the USS fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in the USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in the CSS in step 0) (Size 2 → Size 1).

[0146] In this way, the DCI size budget requirement is met.

[0147] Example 2 The UE configured DCI formats 0_0, 1_0, 0_1, 1_1, 0_2, and 1_2 in the USS. DCI format A was configured in the CSS. DCI format A is for scheduling the group-common PDSCH (in other words, the RNTI of DCI format A is a group-common RNTI such as G-RNTI or G-CS-RNTI). The UE determines the size of the DCI format based on the following process.

[0148] It should be noted that the DCI format A and the first DCI format described in each embodiment of the present application may be in the CSS or in the USS.

[0149] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0150] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0151] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0152] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0153] In step 2B (optionally this step may be any step before step 3), the size of DCI A, Size 7 (CSS DCI format A), is determined.

[0154] Step 3 ends when the DCI size budget (Size is up to 4 and Size is up to 3 for C-RNTI and / or G-RNTI in each cell) is met. The DCI budget is The total size of DCIs placed and monitored in the cell does not exceed 4; It is necessary to satisfy both of the following: the sum of the sizes of DCIs configured and monitored in the cell, and scrambled by the C-RNTI and / or scrambled by the G-RNTI does not exceed 3.

[0155] If not, perform step 4.

[0156] In step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the USS fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in the USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in the CSS in step 0) (Size 2 → Size 1).

[0157] In step 4B, if the DCI size budget is not met, the DCI sizes of DCI 0_2 and DCI 1_2 are aligned (Size 5, Size 6 → size B).

[0158] In case 1, In step 4C, if the DCI size budget is not met, the DCI sizes of DCI 0_1 and DCI 1_1 are aligned (Size 3, Size 4 → size C).

[0159] In step 4D, If the DCI size budget is not met, a zero-padding operation is performed on DCI 0_1 and DCI 1_1 output from 4C, and the sizes of DCI 0_1 and DCI 1_1 are aligned with those of DCI format A (size C → size 7).

[0160] In case 2, In step 4C, if the DCI size budget is not met, align the size of DCI A with 0_1 or 1_1 (assuming DCI Y_1) (Size 3 / Size 4 → size 7).

[0161] DCI Y_1 is DCI 1_1, DCI 0_1, DCI smaller than size 7 and closest to size 7, The closest DCI to size 7, Between DCI 0_1 and DCI 1_1, the smaller size, It is determined by at least one of DCI 0_1 and DCI 1_1, whichever has a relatively large size.

[0162] In step 4D, If the DCI size budget is not met, the size of DCI A is aligned with other DCI formats other than DCI Y_1 in DCI 0_1 or DCI 1_1 (Size 4 / Size 3 → size 7).

[0163] In addition, in this embodiment, the size of DCI format A may be aligned with the size of fallback DCI in CSS, that is, size 1.

[0164] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0165] In step 0A (optionally this step may be any previous step), determining the size of DCI A, Size 5 (CSS DCI format A); Align size of DCI A with size 1 by truncation (eg, truncation from the MSB of FDRA) or zero-filling (eg, before the tail or start position).

[0166] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0167] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0168] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 6(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 7(USS DL 1_2).

[0169] Step 3 ends when the DCI size budget (maximum size 4 / maximum size 3 for C-RNTI and / or G-RNTI in each cell) is met. The DCI budget is The total size of DCIs placed and monitored in the cell does not exceed 4; It is necessary to satisfy both of the following: the sum of the sizes of DCIs configured and monitored in the cell, and scrambled by the C-RNTI and / or scrambled by the G-RNTI does not exceed 3.

[0170] If not, perform step 4.

[0171] In step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the uss fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in USS in step 1 to match the size of Format 0_0 and Format 1_0 monitored in CSS in step 0) (Size 2 → Size 1).

[0172] In step 4B, if the DCI size budget is not met, the DCI sizes of DCI 0_2 and DCI 1_2 are aligned (Size 5, Size 6 → size B).

[0173] In step 4C, if the DCI size budget is not met, the DCI sizes of DCI 0_1 and DCI 1_1 are aligned (Size 3, Size 4 → size C).

[0174] In this way, the DCI size budget is met.

[0175] Example 3 The UE configured DCI formats 0_0, 1_0, 0_1, 1_1, 0_2, and 1_2 in the USS. DCI format A and DCI format B were configured in the CSS. DCI format A and DCI format B are for scheduling the group-common PDSCH (in other words, the RNTI of DCI format A and DCI format B is a group-common RNTI such as G-RNTI or G-CS-RNTI). The UE determines the size of the DCI format based on the following process.

[0176] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0177] In step 0A (optionally this step may be any previous step), determining the size of DCI A, Size 8 (CSS DCI format A); The size of DCI format A is aligned with size 1 by truncation (e.g., truncation from the MSB of FDRA) or zero-filling (e.g., before the tail or start position).

[0178] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0179] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0180] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0181] In step 2B, Determine the DCI size of DCI format B in CSS and obtain Size 7 (USS DL 1_2).

[0182] Step 3 ends when the DCI size budget (Size is up to 4 and Size is up to 3 for C-RNTI and / or G-RNTI in each cell) is met. The DCI budget is The total size of DCIs placed and monitored in the cell does not exceed 4; It is necessary to satisfy both of the following: the sum of the sizes of DCIs configured in the cell, configured for monitoring, and scrambled by the C-RNTI and / or scrambled by the G-RNTI does not exceed 3.

[0183] If not, perform step 4.

[0184] In step 4, In step 4A, remove the 0 added in step 2 (if performed) and align the uss fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in USS in step 1 to match the size of Format 0_0 and Format 1_0 monitored in CSS in step 0) (Size 2 → Size 1).

[0185] In step 4B, if the DCI size budget is not met, the DCI sizes of DCI 0_2 and DCI 1_2 are aligned (Size 5, Size 6 → size B).

[0186] In case 1, In step 4C, if the DCI size budget is not met, the DCI sizes of DCI 0_1 and DCI 1_1 are aligned (Size 3, Size 4 → size C).

[0187] In step 4D, If the DCI size budget is not met, a zero-padding operation is performed on 0_1 and 1_1 output from 4c, and the sizes of DCI 0_1, DCI 1_1, and DCI A are aligned (size C is changed to size 7).

[0188] In case 2, In step 4C, if the DCI size budget is not met, align the size of DCI A with 0_1 or 1_1 (assuming DCI Y_1) (Size 3 / Size 4 → size 7).

[0189] DCI Y_1 is DCI 1_1, DCI 0_1, DCI smaller than size 7 and closest to size 7, The closest DCI to size 7, Between DCI 0_1 and DCI 1_1, the smaller size, It is determined by at least one of DCI 0_1 and DCI 1_1, whichever has a relatively large size.

[0190] In step 4D, if the DCI size budget is not met, the size of DCI A is aligned with another DCI format other than DCI Y_1 in 0_1 or 1_1 (Size 4 or Size 3 → size 7).

[0191] Alternatively, this embodiment may employ the following steps.

[0192] At step 0, Determine the size of DCI 0_0 in CSS, Determine the size of DCI 1_0 in CSS, By adjusting the size of Format 0_0, DCI 0_0 and DCI 1_0 in the CSS are aligned, and the sizes of Format 0_0 and Format 1_0 monitored in the CSS are aligned (tail zero-filling is performed if short, and truncation of the frequency domain resource allocation domain is performed if long) to obtain Size 1 (CSS fallback).

[0193] In step 0A (optionally this step can be any previous step), the size of DCI A, Size 8 (CSS DCI format A), is determined.

[0194] Align size of DCI A with size 1 by truncation (eg, truncation from the MSB of FDRA) or zero-filling (eg, before the tail or start position).

[0195] In step 1, Determine the size of DCI 0_0 in USS, Determine the size of DCI 1_0 in USS, By adjusting the short Format, the sizes of Format 0_0 and Format 1_0 monitored in USS are aligned (tail zero padding) to obtain Size 2 (USS fallback).

[0196] In step 2, Determine the size of DCI 0_1 in USS, Determine the size of DCI 1_1 in USS, If the Format 0_1 ​​monitored in the USS is the same as the Format 0_0 / 1_0 in the USS, add one 0 bit to the tail of DCI 0_1 to distinguish the size and obtain Size 3 (USS UL 0_1); When Format 1_1 monitored in USS is the same as Format 0_0 / 1_0 in USS, the size is differentiated by adding one 0 bit to the tail of DCI 1_1 to obtain Size 4 (USS DL 1_1).

[0197] In step 2A, Determine the DCI size of DCI 0_2 in USS and obtain Size 5(USS UL 0_2); Determine the DCI size of DCI 1_2 in USS and obtain Size 6(USS DL 1_2).

[0198] In step 2B (optionally, this step may be any step before step 3), the size of DCI B is determined to obtain Size 7 (CSS DCI format A).

[0199] Step 3 ends when the DCI size budget (in each cell, Size is up to 4 / Size is up to 3 for C-RNTI and / or G-RNTI) is met.

[0200] In step 4, if the DCI size budget is not met (finally, the sizes of Format 0_0 and Format 1_0 monitored in CSS / USS are made to match), change Size 2 to Size 1.

[0201] In step 4A, remove the 0 added in step 2 (if performed), align the USS fallback DCI with the CSS fallback DCI (adjust the size determination process of Format 0_0 and Format 1_0 monitored in the USS in step 1 to match the sizes of Format 0_0 and Format 1_0 monitored in the CSS in step 0), and change Size 2 to Size 1.

[0202] In case 1, In step 4B, if the DCI size budget is not met, the UL DL DCI sizes of DCI 0_2 and DCI 1_2 are aligned (Size 5, Size 6 are changed to size C).

[0203] In step 4B', If the DCI size budget is not met, a zero-padding operation is performed on DCI 0_2 and DCI 1_2 output from 4B, and the sizes of DCI 0_2 and 1_2 are aligned with those of DCI format B (size C is changed to size 7).

[0204] In case 2, In step 4B, if the DCI size budget is not met, the sizes of DCI 0_2 or DCI 1_2 (assuming DCI Y_1) and DCI format B are aligned (Size 5 / Size 6 → size 7).

[0205] DCI Y_2 is DCI 1_2, DCI 0_2, DCI smaller than size 7 and closest to size 7, The closest DCI to size 7, Between DCI 0_2 and DCI 1_2, the smaller size, It is determined by at least one of DCI 0_2 and DCI 1_2, whichever has a relatively large size.

[0206] In step 4B', If the DCI size budget is not met, the size of another DCI format other than DCI Y_2 in DCI 0_2 or DCI 1_2 and DCI format B are aligned, that is, Size 6 / Size 5 → Size 7.

[0207] In step 4C, if the DCI size budget is not met, change from Size 3 and Size 4 to size B.

[0208] In addition, the DCI size alignment method provided by the embodiments of the present application may be executed by a DCI size alignment device, or may be executed by a control module for executing the DCI size alignment method in the DCI size alignment device. In the embodiments of the present application, the DCI size alignment device provided by the embodiments of the present application will be described by taking the execution of the DCI size alignment method by the DCI size alignment device as an example.

[0209] 3 is a structural schematic diagram of a DCI size alignment device according to an embodiment of the present application, which can correspond to a communication device in other embodiments, and the communication device can be a terminal or a network side device. As shown in FIG. 3, the device 300 includes the following modules:

[0210] The determination module 302 may be used to determine whether the number of DCI sizes of a plurality of DCI formats meets the DCI size budget.

[0211] The DCI size alignment module 304 may be used to perform DCI size alignment operations on the multiple DCI formats based on DCI size alignment rules if the DCI size budget is not met, until the DCI size budget is met.

[0212] The DCI size alignment rule includes at least one of the following 1) to 5).

[0213] 1) Align the first DCI format with DCI 0_0 and / or DCI 1_0 in the CSS.

[0214] 2) Align the first DCI format with DCI 1_1 and / or DCI 0_1 in the USS.

[0215] 3) Align the first DCI format with DCI 1_2 and / or DCI 0_2 in the USS.

[0216] 4) Align DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in the USS.

[0217] 5) Align the first DCI format with the group common DCI format in the CSS.

[0218] In the embodiment of the present application, when a new DCI format is introduced, the device 300 can satisfy the DCI size budget by performing a DCI size alignment operation on multiple DCI formats according to a DCI size alignment rule. The embodiment of the present application is favorable for maintaining the consistency of understanding between a network side device and a terminal, and is favorable for realizing effective transmission of DCI, and is favorable for reducing the complexity of blind detection of the terminal by making the number of DCI sizes of multiple DCI formats satisfy the DCI size budget, and reducing the resource cost of the terminal.

[0219] Optionally, as an embodiment, the multiple DCI formats include a first DCI format for scheduling a group-common PDSCH.

[0220] Optionally, as one embodiment, aligning the first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS includes at least one of the following 1) to 3).

[0221] 1) If the DCI size of the first DCI format is smaller than the first value, zero padding is performed on the first DCI format so that the DCI size of the first DCI format becomes equal to the first value.

[0222] 2) If the DCI size of the first DCI format is larger than the first value, a truncation process is performed on the first DCI format so that the DCI size of the first DCI format becomes equal to the first value.

[0223] 3) Perform zero-padding or truncation processing on DCI 0_0, and perform zero-padding or truncation processing on DCI 1_0 so that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to the DCI size of the first DCI format.

[0224] The first value is the DCI size after alignment of DCI 0_0 and DCI 1_0 in the CSS.

[0225] Optionally, as one embodiment, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in the USS includes aligning DCI 1_1 and DCI 0_1 in the USS so that the DCI size of DCI 1_1 and the DCI size of DCI 0_1 are equal, and if the DCI size budget is still not met, performing zero-padding or truncation processing on DCI 1_1 and performing zero-padding or truncation processing on DCI 0_1 so that the DCI sizes of DCI 1_1 and DCI 0_1 are equal to the DCI size of the first DCI format.

[0226] Optionally, as one embodiment, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in the USS includes aligning the second DCI format with the first DCI format such that a DCI size of the second DCI format is equal to a DCI size of the first DCI format, and if the DCI size budget is still not satisfied, aligning the third DCI format with the first DCI format such that a DCI size of the third DCI format is equal to a DCI size of the first DCI format, where the second DCI format is DCI 1_1 or DCI 0_1, and the third DCI format is a DCI format other than the second DCI format among DCI 1_1 and DCI 0_1.

[0227] Optionally, as one embodiment, the second DCI format includes one of DCI 1_1, DCI 0_1, DCI 0_1 and DCI 1_1 which has a DCI size smaller than the first DCI format and closest to the first DCI format, DCI 0_1 and DCI 1_1 which has a DCI size closest to the first DCI format, DCI 0_1 and DCI 1_1 which has a relatively small DCI size, and DCI 0_1 and DCI 1_1 which has a relatively large DCI size.

[0228] Optionally, as one embodiment, aligning the first DCI format with DCI 1_2 and / or DCI format 0_2 in the USS includes aligning DCI 1_2 and DCI 0_2 in the USS so that the DCI size of DCI 1_2 and the DCI size of DCI 0_2 are equal, and if the DCI size budget is still not met, performing zero-padding or truncation processing on DCI 1_2 and performing zero-padding or truncation processing on DCI 0_2 so that the DCI sizes of DCI 1_2 and DCI 0_2 are equal to the DCI size of the first DCI format.

[0229] Optionally, as one embodiment, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in the USS includes aligning the third DCI format with the first DCI format such that a DCI size of the third DCI format is equal to a DCI size of the first DCI format, and if the DCI size budget is still not satisfied, aligning the fourth DCI format with the first DCI format such that a DCI size of the fourth DCI format is equal to a DCI size of the first DCI format, where the third DCI format is DCI 1_2 or DCI 0_2, and the fourth DCI format is a DCI format other than the third DCI format among DCI 1_2 and DCI 0_2.

[0230] Optionally, as one embodiment, the third DCI format includes one of DCI 1_2, DCI 0_2, DCI 0_2, and DCI 1_2, which has a DCI size smaller than the first DCI format and is closest to the first DCI format, DCI 0_2 and DCI 1_2, which has a DCI size closest to the first DCI format, DCI 0_2 and DCI 1_2, which has a relatively small DCI size, and DCI 0_2 and DCI 1_2, which has a relatively large DCI size.

[0231] Optionally, as one embodiment, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in the USS may include aligning DCI 1_2 and DCI 0_2 in the USS such that a DCI size of DCI 1_2 and a DCI size of DCI 0_2 are equal; if the DCI size budget is still not satisfied, aligning DCI 1_1 and DCI 0_1 in the USS such that a DCI size of DCI 1_1 and a DCI size of DCI 0_1 are equal; if the DCI size budget is still not satisfied, aligning DCI 1_2 and DCI 0_2 after the alignment such that a DCI size of DCI 1_2 and a DCI size of DCI 0_2 and a DCI size of DCI 1_1 and a DCI size of DCI 0_1 are both equal; 1_1 and DCI 0_1.

[0232] Optionally, as one embodiment, DCI 1_2 and DCI 0_2 include an indication bit, or DCI 1_1 and DCI 0_1 include an indication bit, which is for distinguishing between a fifth DCI format including DCI 1_2 and DCI 0_2 and a sixth DCI format including DCI 1_1 and DCI 0_1.

[0233] Optionally, as one embodiment, the determination module 302 is further for determining the DCI size alignment rule based on at least one of the DCI size of DCI 1_1, the DCI size of DCI 0_1, the DCI size of DCI 1_2, the DCI size of DCI 0_2, the DCI size of the first DCI format, and configuration by higher layer signaling.

[0234] Optionally, as one embodiment, the determination module 302 is further for determining the DCI size of the first DCI format based on at least one of: a size of each domain of the first DCI format determined by parameter configuration of a common frequency domain resource, and configuration by higher layer signaling.

[0235] Optionally, as one embodiment, the DCI size budget includes at least one of: a sum of DCI sizes configured in a scheduled cell and monitored by a terminal does not exceed 4; and a sum of DCI sizes scrambled by C-RNTIs and / or G-RNTIs configured in a scheduled cell and monitored by a terminal does not exceed 3.

[0236] Optionally, as one embodiment, the determination module 302 is further for determining a DCI size to be monitored within the DCI size budget, and the device (e.g., a terminal) further includes a monitoring module for monitoring a DCI format after the DCI size alignment operation according to the determined DCI size.

[0237] For the apparatus 300 according to the embodiment of the present application, reference can be made to the steps of the method 200 of the corresponding embodiment of the present application, and each unit / module and other operations and / or functions in the apparatus 300 are for realizing the corresponding steps in the method 200, respectively, and can achieve the same or equivalent technical effects, which will not be repeated here for the sake of brevity.

[0238] The DCI size alignment device in the embodiment of the present application may be a device, a device or electronic device having an operating system, or may be a component, integrated circuit, or chip in a terminal. The device or electronic device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of UE 11 listed above. The non-mobile terminal may be, but is not limited to, a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk, etc., but is not specifically limited in the embodiment of the present application.

[0239] The DCI size alignment device provided by the embodiments of the present application can realize each process realized by the embodiment of the method of Figure 2 and achieve the same technical effects, so in order to avoid duplication, they will not be repeated here.

[0240] Optionally, as shown in Fig. 4, the embodiment of the present application further provides a communication device 400, including a processor 401, a memory 402, and a program or command stored in the memory 402 and executable by the processor 401. For example, when the communication device 400 is a terminal, the program or command can be executed by the processor 401 to realize each process of the embodiment of the DCI size alignment method and achieve the same technical effect. When the communication device 400 is a network side device, the program or command can be executed by the processor 401 to realize each process of the embodiment of the DCI size alignment method and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0241] An embodiment of the present application further provides a terminal including a processor and a communication interface, wherein the processor is for determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, wherein the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS. The embodiment of the terminal corresponds to the embodiment of the above-mentioned terminal-side method, and the implementation procedures and realization methods of the above-mentioned method embodiments can be applied to the embodiment of the terminal to achieve the same technical effects. Specifically, FIG. 5 is a schematic diagram of the hardware structure of a terminal implementing the embodiment of the present application.

[0242] The terminal 500 includes at least some of the following components, but is not limited to: a high-frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, and a processor 510.

[0243] As will be appreciated by those skilled in the art, the terminal 500 may further include a power source (e.g., a battery) for powering each component. The power source is logically connected to the processor 510 by a power management system, so that the power management system realizes functions such as charge / discharge management and power consumption management. The UE structure shown in FIG. 5 is not intended to limit the UE, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, which will not be repeated here.

[0244] It should be noted that in the embodiment of the present application, the input unit 504 may include a graphics processing unit (GPU) 5041 for processing image data of a static image or a video captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode, and a microphone 5042. The display unit 506 may include a display panel 5061, which may be arranged as a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes a touch panel 5071 and other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 may include two parts: a touch detection device and a touch controller. The other input devices 5072 may include, but are not limited to, a physical keyboard, a function button (e.g., a volume control button, a switch button, etc.), a trackball, a mouse, and an operation lever, which will not be repeated here.

[0245] In the embodiment of the present application, the high frequency unit 501 receives downlink data from the network side device, sends it to the processor 510 for processing, and sends uplink data to the network side device. Typically, the high frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a receiver-transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0246] The memory 509 may be used to store software programs or commands and various data. The memory 509 may mainly include an area for storing programs or commands and an area for storing data, which may store an operating system, applications or commands required for at least one function (e.g., audio playback function, image playback function, etc.). The memory 509 may also include a high-speed random access memory or a non-volatile memory, among which the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage device may be included.

[0247] The processor 510 may include one or more processing units. Optionally, the processor 510 may be integrated with an application processor that mainly processes an operating system, a user interface, and applications or commands, and a modem processor, such as a baseband processor that mainly processes wireless communication. Of course, the modem processor does not have to be integrated with the processor 510.

[0248] The processor 510 may be used to determine whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if not, perform DCI size alignment operations on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, where the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning a first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning a first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning a first DCI format with a group common DCI format in a CSS.

[0249] In the embodiment of the present application, when a new DCI format is introduced, the terminal 500 can satisfy the DCI size budget by performing a DCI size alignment operation on multiple DCI formats according to a DCI size alignment rule. The embodiment of the present application is favorable for maintaining the consistency of understanding between the network side device and the terminal, and is favorable for realizing effective transmission of DCI, and is favorable for reducing the complexity of blind detection of the terminal by making the number of DCI sizes of multiple DCI formats satisfy the DCI size budget, thereby reducing the resource cost of the terminal.

[0250] In addition, the terminal 500 provided by the embodiment of the present application can implement each process of the embodiment of the DCI size alignment method described above to achieve the same technical effects, which will not be repeated here to avoid duplication.

[0251] An embodiment of the present application further provides a network side device including a processor and a communication interface, wherein the processor is for determining whether a number of DCI sizes of a plurality of DCI formats meets a DCI size budget, and if the DCI size budget is not met, performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule until the DCI size budget is met, wherein the DCI size alignment rule includes at least one of aligning a first DCI format with DCI 0_0 and / or DCI 1_0 in a CSS, aligning the first DCI format with DCI 1_1 and / or DCI 0_1 in a USS, aligning the first DCI format with DCI 1_2 and / or DCI 0_2 in a USS, aligning DCI 1_2 and / or DCI 0_2 with DCI 1_1 and / or DCI 0_1 in a USS, and aligning the first DCI format with a group common DCI format in a CSS. The embodiment of the network side equipment corresponds to the embodiment of the above-mentioned network side equipment method, and each implementation procedure and realization method of the above-mentioned method embodiment can be applied to the embodiment of the network side equipment to achieve the same technical effects.

[0252] Specifically, an embodiment of the present application further provides a network side device. As shown in Fig. 6, the network side device 600 includes an antenna 61, a radio frequency device 62, and a baseband device 63. The antenna 61 and the radio frequency device 62 are connected. In the uplink direction, the radio frequency device 62 receives information through the antenna 61, and transmits the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes the information waiting to be transmitted and transmits it to the radio frequency device 62. The radio frequency device 62 transmits the received information through the antenna 61 after processing it.

[0253] The DCI size alignment device may be located in the baseband device 63. The method performed by the network side equipment in the above embodiment may be realized by the baseband device 63. The baseband device 63 includes a processor 64 and a memory 65.

[0254] The baseband device 63 may, for example, include at least one baseband board provided with multiple chips. As shown in Fig. 6, one of the chips is, for example, a processor 64 connected to a memory 65 for calling a program in the memory 65 to perform the operations of the network side equipment shown in the above method embodiments.

[0255] The baseband device 63 may further include a network interface 66 for communicating with the radio frequency device 62. The interface may be, for example, a common public radio interface (CPRI).

[0256] Specifically, the network side device in the embodiment of the present application further includes commands or programs stored in memory 65 and executable by processor 64. Processor 64 can call the commands or programs in memory 65 to execute the methods performed by each module shown in Fig. 3 to achieve the same technical effects, which will not be repeated here to avoid duplication.

[0257] The embodiments of the present application further provide a readable storage medium storing a program or command, which, when executed by a processor, can realize each process of the above-mentioned DCI size alignment method embodiment and achieve the same technical effect. To avoid duplication, they will not be repeated here.

[0258] The processor may be the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0259] The embodiment of the present application further provides a chip including a processor and a communication interface. The communication interface and the processor are coupled, and the processor is for executing programs or commands to realize each process of the embodiment of the DCI size alignment method described above, and can achieve the same technical effect. To avoid duplication, they will not be repeated here.

[0260] The chip described in the embodiments of the present application is also called a system on chip, a system chip, a chip system, or an SoC.

[0261] An embodiment of the present application further provides a communication system including a terminal and a network side device. The terminal may be used to perform the method described in the embodiment of the DCI size alignment method. The network side device may be used to perform the method described in the embodiment of the DCI size alignment method.

[0262] It should be noted that in this specification, the terms "comprise", "consist of" or any other variants are intended to include a non-exclusive inclusion, whereby a process, method, article or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article or apparatus that includes the element. In addition, the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed herein, and may further include performing functions substantially simultaneously or in the opposite order, depending on the functions involved. For example, the above methods may be performed in a different order than described, and further, individual steps may be added, omitted, or combined. Also, features described with reference to some examples may be combined with other examples.

[0263] From the above description of the embodiments, it can be clearly understood by those skilled in the art that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform. Of course, it can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical means of the present application can be substantially or partly contributed to the prior art can be implemented as a software product, and the computer software product includes a plurality of commands stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and causes a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0264] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of this application, many forms that a person skilled in the art can obtain without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

[0265] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application filed on May 10, 2022, bearing application number 2021105066490 and titled "DCI size alignment method and apparatus," the entire contents of which are incorporated herein by reference.

Claims

1. 1. A method for downlink control information (DCI) size alignment performed by a communication device, comprising: performing a DCI size alignment operation on the plurality of DCI formats based on a DCI size alignment rule; The DCI size alignment rule is: Aligning the first DCI format with DCI 1_0 in a common search space (CSS); Aligning the first DCI format with a group common DCI format in a CSS through an RRC configuration; and The DCI size alignment method, wherein the plurality of DCI formats includes the first DCI format for scheduling a group common physical downlink shared channel (PDSCH).

2. The step of performing a DCI size alignment operation on a plurality of DCI formats based on the DCI size alignment rule, determining whether a number of DCI sizes of the plurality of DCI formats meets a DCI size budget; and if the DCI size budget is not met, performing a DCI size alignment operation on the plurality of DCI formats based on the DCI size alignment rule until the DCI size budget is met.

3. Aligning the first DCI format with DCI 1_0 in the CSS includes: When a DCI size of the first DCI format is smaller than a first value, performing a zero padding process on the first DCI format so that the DCI size of the first DCI format is equal to the first value; if a DCI size of the first DCI format is greater than the first value, performing a truncation process on the first DCI format such that the DCI size of the first DCI format is equal to the first value; performing zero-padding or truncation processing on DCI 0_0 and performing zero-padding or truncation processing on DCI 1_0 such that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to the DCI size of the first DCI format; The method of claim 1 , wherein the first value is a DCI size after alignment of DCI 0_0 and DCI 1_0 in a CSS.

4. The DCI size alignment rule further includes aligning the first DCI format with at least one of DCI 1_1 and DCI 0_1 in a user dedicated search space USS, and aligning the first DCI format with at least one of DCI 1_1 and DCI 0_1 in a USS comprises: aligning DCI 1_1 and DCI 0_1 in the USS such that the DCI size of DCI 1_1 and the DCI size of DCI 0_1 are equal; 3. The DCI size alignment method of claim 2, further comprising: if the DCI size budget is still not met, performing zero-padding or truncation processing on DCI 1_1 and performing zero-padding or truncation processing on DCI 0_1 so that the DCI sizes of DCI 1_1 and DCI 0_1 are equal to the DCI size of the first DCI format.

5. The DCI size alignment rule further includes aligning the first DCI format with at least one of DCI 1_1 and DCI 0_1 in a user dedicated search space USS, and aligning the first DCI format with at least one of DCI 1_1 and DCI 0_1 in a USS comprises: aligning the second DCI format with the first DCI format such that a DCI size of the second DCI format is equal to a DCI size of the first DCI format; If a DCI size budget is not met, aligning the third DCI format and the first DCI format such that a DCI size of the third DCI format and a DCI size of the first DCI format are equal; The method of claim 1 , wherein the second DCI format is DCI 1_1 or DCI 0_1, and the third DCI format is a DCI format other than the second DCI format among DCI 1_1 and DCI 0_1.

6. The second DCI format, DCI 1_1, DCI 0_1, Among DCI 0_1 and DCI 1_1, a DCI size is smaller than the first DCI format and is closest to the first DCI format; Among DCI 0_1 and DCI 1_1, the one closest to the DCI size of the first DCI format; Of DCI 0_1 and DCI 1_1, the DCI size is relatively small; The DCI size alignment method according to claim 5 , comprising one of DCI 0_1 and DCI 1_1, the DCI size of which is relatively large.

7. The DCI size alignment rule further includes aligning the first DCI format with at least one of DCI 1_2 and DCI 0_2 in a USS, and aligning the first DCI format with at least one of DCI 1_2 and DCI format 0_2 in a USS comprises: aligning DCI 1_2 and DCI 0_2 in the USS such that the DCI size of DCI 1_2 and the DCI size of DCI 0_2 are equal; 2. The DCI size alignment method of claim 1, further comprising: performing zero-padding or truncation processing on DCI 1_2 and performing zero-padding or truncation processing on DCI 0_2 so that the DCI sizes of DCI 1_2 and DCI 0_2 are equal to the DCI size of the first DCI format when the DCI size budget is not met.

8. The DCI size alignment rule further includes aligning the first DCI format with at least one of DCI 1_2 and DCI 0_2 in a USS, and aligning the first DCI format with at least one of DCI 1_2 and DCI 0_2 in a USS comprises: aligning the third DCI format with the first DCI format such that a DCI size of the third DCI format is equal to a DCI size of the first DCI format; if a DCI size budget is not met, aligning the fourth DCI format and the first DCI format such that a DCI size of the fourth DCI format and a DCI size of the first DCI format are equal; The method of claim 1 , wherein the third DCI format is DCI 1_2 or DCI 0_2, and the fourth DCI format is a DCI format other than the third DCI format among DCI 1_2 and DCI 0_2.

9. The third DCI format, DCI 1_2, DCI 0_2, Among DCI 0_2 and DCI 1_2, one having a DCI size smaller than the first DCI format and closest to the first DCI format; Among DCI 0_2 and DCI 1_2, the one closest to the DCI size of the first DCI format; Of DCI 0_2 and DCI 1_2, the DCI size is relatively small, The DCI size alignment method according to claim 8 , comprising one of DCI 0_2 and DCI 1_2, which has a relatively large DCI size.

10. The DCI size alignment rule further includes aligning at least one of DCI 1_2 and DCI 0_2 with at least one of DCI 1_1 and DCI 0_1 in a USS, and aligning at least one of DCI 1_2 and DCI 0_2 with at least one of DCI 1_1 and DCI 0_1 in the USS comprises: aligning DCI 1_2 and DCI 0_2 in the USS such that the DCI size of DCI 1_2 and the DCI size of DCI 0_2 are equal; if the DCI size budget is not met, aligning DCI 1_1 and DCI 0_1 in the USS such that the DCI size of DCI 1_1 and the DCI size of DCI 0_1 are equal; 2. The DCI size alignment method according to claim 1, further comprising: aligning the aligned DCI 1_2 and DCI 0_2 with the aligned DCI 1_1 and DCI 0_1 so that the DCI sizes of DCI 1_2 and DCI 0_2 are equal to the DCI sizes of DCI 1_1 and DCI 0_1 when the DCI size budget is not met.

11. DCI size of DCI 1_1, DCI size of DCI 0_1, DCI size of DCI 1_2, DCI size of DCI 0_2, DCI size of the first DCI format, configuration according to higher layer signaling, determining the DCI size alignment rule based on at least one of: Or, a size of each domain of the first DCI format determined by parameter configuration of a common frequency domain resource; Configuration via higher layer signaling, determining a DCI size of the first DCI format based on at least one of: The DCI size alignment method according to any one of claims 1 to 10.

12. The DCI size budget is: The sum of the sizes of DCIs configured in the scheduled cell and monitored by the terminal does not exceed 4; The DCI size alignment method according to claim 2, comprising at least one of: a total of DCI sizes scrambled by at least one of a cell radio network temporary identifier (C-RNTI) and a group radio network temporary identifier (G-RNTI) located in a scheduled cell and monitored by a terminal does not exceed three. determining a DCI size to be monitored within a DCI size budget; monitoring a DCI format after the DCI size alignment operation according to the determined DCI size; The DCI size alignment method according to claim 1 , further comprising:

14. and a DCI size alignment module for performing a DCI size alignment operation for a plurality of DCI formats based on a downlink control information (DCI) size alignment rule; The DCI size alignment rule is: Aligning the first DCI format with DCI 1_0 in a common search space (CSS); Aligning the first DCI format with a group common DCI format in a CSS through an RRC configuration; and The DCI size aligning device, wherein the plurality of DCI formats includes the first DCI format for scheduling a group common physical downlink shared channel (PDSCH).

15. The method of claim 14, further comprising: aligning the first DCI format with DCI 1_0 in the CSS, When a DCI size of the first DCI format is smaller than a first value, performing a zero padding process on the first DCI format so that the DCI size of the first DCI format is equal to the first value; if a DCI size of the first DCI format is greater than the first value, performing a truncation process on the first DCI format such that the DCI size of the first DCI format is equal to the first value; performing zero-padding or truncation processing on DCI 0_0 and performing zero-padding or truncation processing on DCI 1_0 such that the DCI sizes of DCI 0_0 and DCI 1_0 are equal to the DCI size of the first DCI format; The DCI size alignment device of claim 14 , wherein the first value is a DCI size after alignment of DCI 0_0 and DCI 1_0 in a CSS.

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