Adaptive pilot insertion for a MIMO-OFDM system

Abstract

Emission entity sends base pilot frequency symbol in each protocol data unit (PDU). In normal (or most of) signal path condition receiving entity can use the base pilot frequency symbol to implement adequately accurate signal patch response estimation for MIMO signal path. The emission entity selectively sends additional pilot frequency symbol based on demands for example signal path condition and/or other factor. The additional pilot frequency symbol can be inserted into PDU self-adaptively almost in any symbol cycle. The receiving entity can use the additional pilot frequency symbol to obtain improved signal path response estimation. The emission entity sends signaling for showing that the additional pilot frequency symbol is been sent. The signaling can be embedded into pilot frequency symbol transmitted by a group of pilot frequency sub-band for carrier wave pilot frequency symbol and the carrier wave pilot frequency symbol is transmitted in most of PDU. The signaling designates whether the additional pilot frequency symbol is being transmitted or possible other relative information.

A transmitting entity transmits a base pilot in each protocol data unit (PDU). A receiving entity is able to derive a sufficiently accurate channel response estimate of a MIMO channel with the base pilot under nominal (or most) channel conditions. The transmitting entity selectively transmits an additional pilot if and as needed e.g. based on channel conditions and/or other factors. The additional pilot may be adaptively inserted in almost any symbol period in the PDU. The receiving entity is able to derive an improved channel response estimate with the additional pilot. The transmitting entity sends signaling to indicate that additional pilot is being sent. This signaling may be embedded within pilot symbols sent on a set of pilot subbands used for a carrier pilot that is transmitted across most of the PDU. The signaling indicates whether additional pilot is being sent and possibly other pertinent information.

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Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
4G	08/04/2012	ISLD-201204-008	QUALCOMM INC	S1 TS Number: TS 136 213 Version No: Illustrative part: ---- Release: + -	No	Family Member
Not Available	08/04/2012	ISLD-201204-008	QUALCOMM INC	S1 TS Number: TS 136 213 Version No: Illustrative part: ---- Release: + -	No	Family Member
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ES2478519T3	5G	05/12/2019	ISLD-201912-057	QUALCOMM INC	S1 TS Number: TS 138 211 Version No: ---- Section No: Release : ---- S2 TS Number: TS 138 331 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
MY154786A	4G	08/04/2012	ISLD-201204-008	QUALCOMM INC	S1 TS Number: TS 136 213 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
MY154786A	Not Available	08/04/2012	ISLD-201204-008	QUALCOMM INC	S1 TS Number: TS 136 213 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
MY154786A	4G	29/01/2017	ISLD-201703-174	QUALCOMM INC	S1 TS Number: TS 136 211 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 212 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
MY154786A	5G	05/12/2019	ISLD-201912-057	QUALCOMM INC	S1 TS Number: TS 138 211 Version No: ---- Section No: Release : ---- S2 TS Number: TS 138 331 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
EP3537674A1	5G	05/12/2019	ISLD-201912-057	QUALCOMM INC	S1 TS Number: TS 138 211 Version No: ---- Section No: Release : ---- S2 TS Number: TS 138 331 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
HUE044471T2	5G	05/12/2019	ISLD-201912-057	QUALCOMM INC	S1 TS Number: TS 138 211 Version No: ---- Section No: Release : ---- S2 TS Number: TS 138 331 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
ES2739391T3	-----	-----	-----	-----	-----	-----	-----

Publication No	Technology	Declaration Information			Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
-----	-----	-----	-----	-----	S1 TS Number: ----- Version No: ----- Section No:----- Release:----- + -				-----	-----	-----	-----

Technologies

Multiple-Input Multiple-Output(MIMO)/Massive MIMO

Product

Not Available

Use Cases

Wireless communication

Services

Not Available

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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.