SIGNALING IN RRC AND MAC FOR PDSCH RESOURCE MAPPING FOR PERIODIC AND SEMIPERSISTENT REFERENCE SIGNAL ASSUMPTIONS

Title:

SIGNALING IN RRC AND MAC FOR PDSCH RESOURCE MAPPING FOR PERIODIC AND SEMIPERSISTENT REFERENCE SIGNAL ASSUMPTIONS

Document Type and Number:

WIPO Patent Application WO/2019/138380

Kind Code:

A1

Abstract:

Systems and methods for activating a Semi-Persistent (SP) Zero Power (ZP) Channel State Information Reference Signal (CSI-RS) are provided. In some embodiments, a method performed by a wireless device includes for activating SP ZP CSI-RS includes receiving, from a network node, a control message that indicates the activation of one or more SP ZP CSI-RS resources; and activating, based on the control message, the one or more SP ZP CSI-RS resources. In this way, ZP CSI-RS may be used for rate matching around other wireless devices and a SP ZP CSI-RS resource may be activated without activating any Non-Zero Power (NZP) CSI-RS, CSI-Interference Measurement (CSI-IM), or CSI reporting for the wireless device.

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Inventors:

MURUGANATHAN SIVA (CA)
FAXÉR SEBASTIAN (SE)
GAO SHIWEI (CA)
MÄÄTTÄNEN HELKA-LIINA (FI)

Application Number:

PCT/IB2019/050242

Publication Date:

July 18, 2019

Filing Date:

January 11, 2019

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Assignee:

ERICSSON TELEFON AB L M (SE)

International Classes:

H04L5/00

Domestic Patent References:

WO2018144920A1

2018-08-09

Foreign References:

US201762590510P

Other References:

ERICSSON: "On remaining details of CSI measurement", vol. RAN WG1, no. Reno, USA; 20171127 - 20171201, 18 November 2017 (2017-11-18), XP051370190, Retrieved from the Internet [retrieved on 20171118]
INTERDIGITAL ET AL: "Remaining Issues on CSI acquisition for NR", vol. RAN WG1, no. Hangzhou; 20170515 - 20170519, 14 May 2017 (2017-05-14), XP051273531, Retrieved from the Internet [retrieved on 20170514]
HUAWEI ET AL: "Need for new MAC CEs for UL and DL beam management", vol. RAN WG2, no. Reno, Nevada, USA; 20171127 - 20171201, 17 November 2017 (2017-11-17), XP051371523, Retrieved from the Internet [retrieved on 20171117]

Attorney, Agent or Firm:

BEVINS, R. Chad (US)

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