Method and device for dynamically determining a pilot pattern
View Patent ↗A method and a device for determining dynamically a pilot pattern are provided. The method includes acquiring a TTI duration occupied by transmission of data, and determining a pilot pattern according to the TTI duration occupied by the transmission of the data.
1. A method for dynamically determining a pilot pattern, comprising:
acquiring a Transmission Time Interval (TTI) duration occupied by transmission of data;
determining a pilot pattern according to the TTI duration occupied by the transmission of the data;
wherein the determining the pilot pattern according to the TTI duration occupied by the transmission of the data, comprises: when the TTI duration is larger than A symbols, determining that part of all symbols in a TTI have pilots or do not have pilots according to a predetermined rule and/or a signaling, wherein A is a positive integer larger than or equal to 1; and
determining one or more positions of one or more symbols having pilots of the all symbols in the TTI, according to the predetermined rule and/or the signaling,
wherein at least one of following (a)-(e):
(a) the symbols having pilots are (1+i×┌M/K┐)-th symbols of the all symbols in the TTI duration or are (1+i×┌M/K┐)-th symbols from an end of the all symbols in the TTI duration, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
M
-
1
⌈
M
/
K
⌉
⌋
;
(b) when K is an odd number and M is an odd number, the symbols having pilots are
(
⌈
M
/
2
⌉
±
i
×
⌈
⌈
M
/
2
⌉
⌈
K
/
2
⌉
⌉
)
-
th
symbols of the all symbols in the TTI duration, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K−1)/2, or i is an integer larger than or equal to 1 and smaller than or equal to
⌊
M
-
⌈
M
/
2
⌉
⌈
⌈
M
/
2
⌉
⌈
K
/
2
⌉
⌉
⌋
;
(c) when K is an even number and M is an even number, the symbols having pilots are (a+i×┌M/K┐)-th symbols and (a+i×┌M/K┐)-th symbols from an end of the all symbols in the TTI duration, wherein i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
M
/
2
⌈
M
/
K
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to M/2;
(d) when K is an even number and M is an odd number, the symbols having pilots are
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols of the all symbols in the TTI duration and
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols from the end of the all symbols in the TTI duration, wherein i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
⌊
M
/
2
⌋
⌈
⌊
M
/
2
⌋
K
/
2
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to └M/2┘; and
(e) when K is an even number, the symbols having pilots are
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols and
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols from an end of the all symbols in the TTI, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
⌊
M
/
2
⌋
⌈
⌊
M
/
2
⌋
K
/
2
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to └M/2┘,
wherein, K is a quantity of the one or more symbols having pilots of the all symbols in the TTI duration, K is smaller than or equal to M, and M is a quantity of the all symbols in the TTI duration, and
┌ ┐ is a ceiling function, and └ ┘ is a floor function.
2. The method according to claim 1 , wherein the data comprises one or more of uplink data and downlink data, the uplink data comprises uplink traffic information and/or uplink control information, and the downlink data comprises downlink traffic information and/or downlink control information.
3. The method according to claim 2 , wherein, the determining that part of the all symbols in a TTI have pilots according to the predetermined rule and the signaling, comprises:
determining that K symbols of the all symbols in the TTI have pilots according to the predetermined rule and/or the signaling, and symbols other than the K symbols of the all symbols in the TTI do not have pilots, wherein K is smaller than or equal to M, and M is the quantity of the all symbols comprised in the TTI.
4. The method according to claim 3 , wherein the K symbols having pilots are uniformly-spaced K symbols of the all symbols in the TTI or are centrally-symmetric K symbols of the all symbols in the TTI.
5. The method according to claim 3 , wherein K=┌M/P┐ or └M/P┘ or ┌M×R┐ or └M×R┘, wherein P is a predefined or preconfigured positive integer larger than or equal to 2, and R is a predefined or preconfigured decimal fraction or a percentage larger than 0 and smaller than 1.
6. A device for dynamically determining a pilot pattern, comprising:
an acquisition module configured to acquire a Transmission Time Interval (TTI) duration occupied by transmission of data; and
a determination module configured to determine a pilot pattern according to the TTI duration occupied by the transmission of the data,
wherein the determination module is further configured to:
when the TTI duration is larger than A symbols, determine that part of all symbols in the TTI duration have pilots or do not have pilots according to a predetermined rule and/or according to a received signaling, wherein A is a positive integer larger than or equal to 1; and
determine one or more positions of one or more symbols having pilots of the all symbols in the TTI duration, according to the predetermined rule and/or the signaling,
wherein, at least one of following (a)-(e):
(a) the symbols having pilots are (1+i×┌M/K┐)-th symbols of the all symbols in the TTI duration or are (1+i×┌M/K┐)-th symbols from an end of the all symbols in the TTI duration, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
M
-
1
⌈
M
/
K
⌉
⌋
;
(b) when K is an odd number and M is an odd number, the symbols having pilots are
(
⌈
M
/
2
⌉
±
i
×
⌈
⌈
M
/
2
⌉
⌈
K
/
2
⌉
⌉
)
-
th
symbols of the all symbols in the TTI duration, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K−1)/2, or i is an integer larger than or equal to 1 and smaller than or equal to
⌊
M
-
⌈
M
/
2
⌉
⌈
⌈
M
/
2
⌉
⌈
K
/
2
⌉
⌉
⌋
;
(c) when K is an even number and M is an even number, the symbols having pilots are (a+i×┌M/K┐)-th symbols and (a+i×┌M/K┐)-th symbols from an end of the all symbols in the TTI duration, wherein i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
M
/
2
⌈
M
/
K
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to M/2;
(d) when K is an even number and M is an odd number, the symbols having pilots are
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols of the all symbols in the TTI duration and
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols from the end of the all symbols in the TTI duration, wherein i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
⌊
M
/
2
⌋
⌈
⌊
M
/
2
⌋
K
/
2
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to └M/2┘; and
(e) when K is an even number, the symbols having pilots are
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols and
(
a
+
i
×
⌈
⌊
M
/
2
⌋
K
/
2
⌉
)
-
th
symbols from an end of the all symbols in the TTI, wherein, i is an integer larger than or equal to 0 and smaller than or equal to (K/2−1), or i is an integer larger than or equal to 0 and smaller than or equal to
⌊
⌊
M
/
2
⌋
⌈
⌊
M
/
2
⌋
K
/
2
⌉
⌋
,
a is a predefined or preconfigured integer larger than or equal to 1 and smaller than or equal to └M/2┘,
wherein, K is a quantity of the one or more symbols having pilots of the all symbols in the TTI duration, K is smaller than or equal to M, and M is a quantity of the all symbols in the TTI duration, and
┌ ┐ is a ceiling function, and └ ┘ is a floor function.
7. The device according to claim 6 , wherein the data comprises one or more of uplink data and downlink data, the uplink data comprises uplink traffic information and/or uplink control information, and the downlink data comprises downlink traffic information and/or downlink control information.
8. The device according to claim 7 , wherein the determination module is further configured to determine that K symbols of the all symbols in the TTI have pilots according to the predetermined rule and/or the signaling, and symbols other than the K symbols of the all symbols in the TTI do not have pilots, wherein K is smaller than or equal to M, and M is the quantity of the all symbols in the TTI.
9. The device according to claim 8 , wherein the K symbols having pilots are uniformly-spaced K symbols of the all symbols in the TTI, or the K symbols are centrally-symmetric K symbols of the all symbols in the TTI; and/or
K=┌M/P┐ or └M/P┘ or ┌M×R┐ or └M×R┘, wherein P is a predefined or preconfigured positive integer larger than or equal to 2, and R is a predefined or preconfigured decimal fraction or a percentage larger than 0 and smaller than 1.
10. A device for dynamically determining a pilot pattern, comprising:
a processor;
a storage connected to the processor through a bus interface and configured to store computer programs and instructions used by the processor when performing operations;
a transceiver connected to the processor and the storage through the bus interface and configured to receive or transmit data under a control of the processor;
wherein when the programs and instructions are executed by the processor, the processor implements the method according to claim 1 .