Title:
SUL FAILURE HANDLING
Document Type and Number:
WIPO Patent Application WO/2019/139532
Kind Code:
A1
Abstract:
A UE (50) is configured to receive data from a serving node via a downlink carrier and to transmit data to the serving node (30) via selective use of a first uplink carrier and an associated supplementary uplink, SUL, carrier, such that only one of the carriers is used by the UE (50) at any given time. The UE (50) detects (502) a radio link problem for a currently used one of the first uplink carrier and the associated SUL carrier. Responsive to said detecting, the UE(50) transmits (504) a random access preamble to the serving node (30) on the first uplink carrier or the associated SUL carrier. The serving node (30) receives (302) an uplink failure report from the UE (50) and may then release (304) the first uplink carrier or the associated SUL carrier, with respect to the UE (50), in response.
Inventors:
ORSINO ANTONINO (FI)
YILMAZ OSMAN NURI CAN (FI)
SUSITAIVAL RIIKKA (FI)
YILMAZ OSMAN NURI CAN (FI)
SUSITAIVAL RIIKKA (FI)
Application Number:
PCT/SE2019/050009
Publication Date:
July 18, 2019
Filing Date:
January 09, 2019
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
International Classes:
H04W76/18; H04W74/08; H04W76/15
Foreign References:
| US20170019945A1 | 2017-01-19 | |||
| US20170230232A1 | 2017-08-10 |
Other References:
KDDI CORPORATION: "Discussions on reporting SCG-RLF towards MeNB", vol. RAN WG2, no. Valencia, Spain; 20140331 - 20140404, 22 March 2014 (2014-03-22), XP050792437, Retrieved from the Internet
ALCATEL-LUCENT ET AL: "Discussion on the remaining S-RLF issues in dual connectivity", vol. RAN WG2, no. Seoul, South Korea; 20140519 - 20140523, 18 May 2014 (2014-05-18), XP050793664, Retrieved from the Internet
NEC: "Remaining issues in S-RLF", vol. RAN WG2, no. Seoul, South Korea; 20140519 - 20140523, 9 May 2014 (2014-05-09), XP050818485, Retrieved from the Internet
KYOCERA: "Consideration on SCG RLF", vol. RAN WG2, no. Valencia, Spain; 20140331 - 20140404, 22 March 2014 (2014-03-22), XP050792571, Retrieved from the Internet
ALCATEL-LUCENT ET AL: "Discussion on the remaining S-RLF issues in dual connectivity", vol. RAN WG2, no. Seoul, South Korea; 20140519 - 20140523, 18 May 2014 (2014-05-18), XP050793664, Retrieved from the Internet
NEC: "Remaining issues in S-RLF", vol. RAN WG2, no. Seoul, South Korea; 20140519 - 20140523, 9 May 2014 (2014-05-09), XP050818485, Retrieved from the Internet
KYOCERA: "Consideration on SCG RLF", vol. RAN WG2, no. Valencia, Spain; 20140331 - 20140404, 22 March 2014 (2014-03-22), XP050792571, Retrieved from the Internet
Attorney, Agent or Firm:
AYOUB, Nabil (SE)
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