User equipment and base station

• US 10,440,699 B2
• Filed: 07/10/2018
• Issued: 10/08/2019
• Est. Priority Date: 04/08/2011
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yamada, Shohei
• Primary Examiner(s): Ambaye, Mewale A
• Application Number:
  US16/031,740
• Publication Number:
  US 20180324792A1
• Time in Patent Office: 455 Days
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0618 Space-time coding
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A User Equipment (UE) configured for multi-group communications is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE detects a plurality of cells. The UE also determines to use multiple groups of one or more cells. The UE further determines a primary secondary cell (PSCell) for a non-primary cell (non-PCell) group based on UE-specific radio resource control (RRC) signaling. The UE additionally receives information using the multiple groups.

Claims

1. A User Equipment (UE), comprising:

a computer processor;

a memory in electronic communication with the computer processor;

instructions stored in the memory, the instructions being executable by the computer processor to;

receive, from a base station, a radio resource control, RRC, message including a configuration to configure multiple groups, each of which is constituted by one or more serving cells;

wherein

a serving cell which is included in one group of the multiple groups is a primary cell (PCell), and

a serving cell which is included in another group of the multiple groups is a specific cell,

decode a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a first random access radio network temporary identifier (RA-RNTI) in a common search space on the PCell; and

decode a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a second random access radio network temporary identifier (RA-RNTI) in a common search space on the specific cell.

2. A base station, comprising:

a computer processor;

a memory in electronic communication with the computer processor;

instructions stored in the memory, the instructions being executable by the computer processor to;

transmit, to a user equipment, a radio resource control, RRC, message including a configuration to configure multiple groups, each of which is constituted by one or more serving cells;

wherein

a serving cell which is included in one group of the multiple groups is a primary cell (PCell), and

a serving cell which is included in another group of the multiple groups is a specific cell,

encode a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a random access radio network temporary identifier (RA-RNTI) in a common search space on the specific cell; and

transmit the PDCCH with the CRC scrambled by the RA-RNTI in the common search space on the specific cell.

3. A method performed by a User Equipment (UE) comprising:

receiving, from a base station, a radio resource control, RRC, message including a configuration to configure multiple groups, each of which is constituted by one or more serving cells;

wherein

a serving cell which is included in one group of the multiple groups is a primary cell (PCell), and

a serving cell which is included in another group of the multiple groups is a specific cell,

decoding a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a first random access radio network temporary identifier (RA-RNTI) in a common search space on the PCell; and

decoding a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a second random access radio network temporary identifier (RA-RNTI) in a common search space on the specific cell.

4. A method performed by a base station comprising:

transmitting, to a user equipment, a radio resource control, RRC, message including a configuration to configure multiple groups, each of which is constituted by one or more serving cells;

wherein

a serving cell which is included in one group of the multiple groups is a primary cell (PCell), and

a serving cell which is included in another group of the multiple groups is a specific cell,

encoding a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC) scrambled by a random access radio network temporary identifier (RA-RNTI) in a common search space on the specific cell; and

transmitting the PDCCH with the CRC scrambled by the RA-RNTI in the common search space on the specific cell.