Systems and methods for establishing multiple radio connections

• US 10,039,152 B2
• Filed: 08/04/2017
• Issued: 07/31/2018
• Est. Priority Date: 03/22/2013
• 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): Ho, Duc C
• Application Number:
  US15/669,621
• Publication Number:
  US 20170332437A1
• Time in Patent Office: 361 Days
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/16 Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

A method for establishing multiple radio connections by a user equipment (UE) is described. The method includes receiving a first physical downlink control channel (PDCCH) that includes a first cyclic redundancy check (CRC) scrambled by a first cell radio network temporary identifier (C-RNTI) in a primary radio connection. The method also includes decoding the first PDCCH. The method also includes receiving a second PDCCH that includes a second CRC scrambled by a second C-RNTI in a secondary radio connection. The method also includes decoding the second PDCCH.

Claims

1. A method for dual connectivity by a user equipment (UE), comprising:

receiving a radio resource control (RRC) connection reconfiguration message including control information for an addition of a second set of cell(s);

and performing a random access for a cell of the second set of cell(s),

wherein the control information indicates a security algorithm for the second set of cell(s),

a first set of cell(s) corresponds to a first Medium Access Control (MAC) entity, and the second set of cell(s) corresponds to a second MAC entity.

2. A method for dual connectivity by a base station, comprising:

sending a radio resource control (RRC) connection reconfiguration message including control information for an addition of a second set of cell(s);

and performing a random access procedure for a cell of the second set of cell(s),

wherein the control information indicates a security algorithm for the second set of cell(s),

a first set of cell(s) corresponds to a first Medium Access Control (MAC) entity, and the second set of cell(s) corresponds to a second MAC entity.

3. A user equipment (UE) for dual connectivity, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to;

receive a radio resource control (RRC) connection reconfiguration message including control information for an addition of a second set of cell(s);

and perform a random access for a cell of the second set of cell(s),

wherein the control information indicates a security algorithm for the second set of cell(s),

a first set of cell(s) corresponds to a first Medium Access Control (MAC) entity, and the second set of cell(s) corresponds to a second MAC entity.

4. A base station for dual connectivity, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to;

send a radio resource control (RRC) connection reconfiguration message including control information for an addition of a second set of cell(s);

and perform a random access procedure for a cell of the second set of cell(s),

wherein the control information indicates a security algorithm for the second set of cell(s),

a first set of cell(s) corresponds to a first Medium Access Control (MAC) entity, and the second set of cell(s) corresponds to a second MAC entity.