Unlock instant, AI-driven research and patent intelligence for your innovation.
Codebook subset restriction method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technique of subset and collection, applied in the codebook limitation indication method, device and system field, which can solve the problems of increased field length, increased signaling, waste of air interface resources, etc.
Active Publication Date: 2019-03-19
HUAWEI TECH CO LTD
View PDF6 Cites 3 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Therefore, multiple sets of bitmaps will greatly increase the length of the above fields, resulting in increased signaling and waste of air interface resources
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach 1
[0135] Embodiment 1: The at least one bit indicates at least two elements {b in the set B i0 ,b i1 …b ik},include:
[0136] The T 1 The x-th bit of bits indicates at least one element of said B; and / or said T 1 The y-th bit of the bits indicates at least two elements in said B; where x satisfies is an even number, y satisfies is odd, x and y are less than or equal to T 1 -1 non-negative integer, and the K 2 is less than T 1 positive integer of .
[0137] In one embodiment, T 1 = K 1 K 2 , the K 2 and K 1 All are positive integers. In yet another embodiment, K 1 =N 1 o 1 , K 2 =N 2 o 2 ,T 1 =N 1 o 1 N 2 o 2 , the N 1 , N 2 , O 1 , O 2 The meaning of is the same as that used when describing the precoding matrices (3) and (4) above, and will not be repeated here. to N 1 =8,N 2 = 1, O 1 = 4, O 2 =1 as an example, then T 1 =32,K 2 =1. At this time, the xth=0, 2, 4,..., 28, 30th bits indicate at least one element in the B, and the y=1, 3, 5,..., ...
Embodiment approach 2
[0159] Embodiment 2: The at least one bit indicates at least two elements {b in the set B i0 ,b i1 …b ik},include:
[0160] The T 1 The x-th bit of the bits indicates at least 3 elements of said B; and / or
[0161] The T 1 the y-th bit of the bits indicates at least 4 elements in said B;
[0162] where x satisfies is an even number, y satisfies is odd, x and y are less than or equal to T 1 -1 non-negative integer, and the K 2 is less than T 1 positive integer of .
[0163] In one embodiment, T 1 = K 1 K 2 , the K 2 and K 1 All are positive integers. In yet another embodiment, K 1 =N 1 o 1 , K 2 =N 2 o 2 ,T 1 =N 1 o 1 N 2 o 2 , the N 1 , N 2 , O 1 , O 2 The meaning of is the same as that used when describing the precoding matrices (3) and (4) above, and will not be repeated here. to N 1 =8,N 2 = 1, O 1 = 4, O 2 =1 as an example, then T 1 =32,K 2 =1. At this time, the xth=0, 2, 4, ... 28, 30th bits indicate at least two elements in the B, ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
An indicating method for bit fields is provided. A first field is determined, wherein the first field comprises T1 bits; at least one bit indicates at least two elements {bi0, bi1 to bik} in a set B in the T1 bits; the at least one bit further indicates at least one element {thetaj0, thetaj1 to thetajh} in a set phi; the at least one element in the {bi0, bi1 to bik} and the at least one element inthe {thetaj0, thetaj1 to thetajh} are used for forming a precoding matrix, wherein the set B is equal to {b0, b1 to bT2-1}, and the elements in the set B are vectors with the length of N / 4; the set phi is equal to {theta0, theta1 to thetaS-1}, and the element in the set phi is a complex number of unit amplitude; the first column of the precoding matrix W meets certain conditions; the line numberof W is N, the column number of W is R, and N is larger than or equal to R, bkl is the element in the set b, thetaP1 is the element in the set phi, phil is the complex number of unit amplitude, and T1, T2 and S are all positive integers, (formula), and l is an integer larger than or equal to 0 and smaller than or equal to R-1.
Description
technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to a method, device and system for indicating codebook restrictions. Background technique [0002] Generally, the signal transmission model of a wireless communication system can be based on the following mathematical formula: [0003] y=HWx+n [0004] Among them, x represents the signal to be transmitted, H represents the channel matrix, which is used to characterize the characteristics of the channel, and W is a precoding matrix, which is used to represent the data to be transmitted before the data to be transmitted is transmitted through the channel H. precoded matrix. n represents noise, and y represents a signal received at the receiving side. The precoding matrix W is usually determined through measurement and feedback. For example, the process of determining the precoding matrix of downlink data may be sent by the transmitting end with one or more re...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More