Title:
NOTIFICATION MESSAGE FOR BACKHAUL RADIO LINK FALIURE IN WIRELESS RELAY NETWORKS
Document Type and Number:
WIPO Patent Application WO/2021/182165
Kind Code:
A1
Abstract:
An integrated access and backhaul (IAB) parent node comprises a first radio interface and a radio second interface. The first radio interface is configured to establish a radio resource control (RRC) connection with a donor node; the second radio interface is configured to serve a cell to communicate with a wireless terminal. The wireless terminal may be a user equipment (UE) or a child IAB node. The IAB parent node comprises processor circuitry and transmitter circuitry. The processor circuitry is configured to: detect a radio link failure (RLF) on an upstream path to the donor node, provide updated system information based on the RLF, the updated system information comprising at least one cell status indicating that the cell is not allowed to camp on; and, generate a notification message comprising notification information configured to indicate whether the wireless terminal is to initiate an acquisition procedure to acquire the system information (a) immediately, or (b) after a next modification period boundary. The transmitter circuitry is configured to transmit, using the second interface, to the wireless terminal: the notification message and the updated system information.
Inventors:
ISHII ATSUSHI
Application Number:
PCT/JP2021/007807
Publication Date:
September 16, 2021
Filing Date:
March 02, 2021
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04W36/08; H04W4/90; H04W36/38; H04W48/16; H04W76/18
Domestic Patent References:
| WO2020039824A1 | 2020-02-27 |
Foreign References:
| US20150173089A1 | 2015-06-18 |
Other References:
SHARP: "Issue of loop topology after RLF", 3GPP DRAFT; R2-1915766, vol. RAN WG2, 7 November 2019 (2019-11-07), Reno, NV, U.S.A, pages 1 - 3, XP051817355
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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