Title:
LOW LATENCY PHYSICAL LAYER DESIGN FOR CONTENTION-BASED UPLINK CHANNELS
Document Type and Number:
WIPO Patent Application WO/2016/086093
Kind Code:
A3
Abstract:
Certain aspects relate to methods and apparatus for latency reduction for UEs in a RRC connected mode. During contention-based uplink access by groups of UEs within a subframe, an eNB may decode the received uplink transmission based, at least in part, on the assigned group of resources assigned to the UE and used for transmission. Additional orthogonalization techniques such as reduced TTI size can be used to reduce collisions among different users performing contention-based transmissions. Furthermore, when the eNB fails to successfully decode the uplink transmission, the eNB may identify the UE that sent the uplink transmission based on a detected reference signal and may transmit an uplink assignment to the identified UE.
Inventors:
XU HAO (US)
DAMNJANOVIC ALEKSANDAR (US)
DABEER ONKAR JAYANT (US)
GAAL PETER (US)
CHEN WANSHI (US)
PATEL SHIMMAN (US)
WEI YONGBIN (US)
MALLADI DURGA PRASAD (US)
DAMNJANOVIC ALEKSANDAR (US)
DABEER ONKAR JAYANT (US)
GAAL PETER (US)
CHEN WANSHI (US)
PATEL SHIMMAN (US)
WEI YONGBIN (US)
MALLADI DURGA PRASAD (US)
Application Number:
PCT/US2015/062596
Publication Date:
July 21, 2016
Filing Date:
November 25, 2015
Export Citation:
Assignee:
QUALCOMM INC (US)
International Classes:
H04W74/00; H04J11/00; H04W72/12; H04W74/02; H04W74/08
Domestic Patent References:
| WO2007022787A1 | 2007-03-01 | |||
| WO2010057540A1 | 2010-05-27 | |||
| WO2014090200A1 | 2014-06-19 | |||
| WO2011086525A1 | 2011-07-21 |
Other References:
ERICSSON ET AL: "Contention based uplink transmissions", 3GPP DRAFT; R2-093812_CONTENTION_BASED_UPLINK, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Los Angeles, USA; 20090623, 23 June 2009 (2009-06-23), XP050352029
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Feasibility study for Further Advancements for E-UTRA (LTE-Advanced) (Release 12)", 3GPP STANDARD; 3GPP TR 36.912, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. V12.0.0, 24 September 2014 (2014-09-24), pages 1 - 62, XP050925880
CHIH-LIN I: "Defining the Wireless Future - Vision 2020: Perspectives of Mobile Operators (5G: Data Rate and More)", KEYNOTE ICC2014, 13 June 2014 (2014-06-13), pages 1 - 33, XP055227730, Retrieved from the Internet [retrieved on 20151111]
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Feasibility study for Further Advancements for E-UTRA (LTE-Advanced) (Release 12)", 3GPP STANDARD; 3GPP TR 36.912, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. V12.0.0, 24 September 2014 (2014-09-24), pages 1 - 62, XP050925880
CHIH-LIN I: "Defining the Wireless Future - Vision 2020: Perspectives of Mobile Operators (5G: Data Rate and More)", KEYNOTE ICC2014, 13 June 2014 (2014-06-13), pages 1 - 33, XP055227730, Retrieved from the Internet
Attorney, Agent or Firm:
DETJEN, Puja S. et al. (L.L.P.24 Greenway Plaza,Suite 160, Houston Texas, US)
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