Wireless communication system, mobile station apparatus, base station apparatus, random access method and integrated circuit

• US 9,549,418 B2
• Filed: 02/05/2015
• Issued: 01/17/2017
• Est. Priority Date: 03/29/2010
• 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: Kato, Yasuyuki
• Primary Examiner(s): Weidner, Timothy J
• Application Number:
  US14/614,624
• Publication Number:
  US 20150156800A1
• Time in Patent Office: 712 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

The present invention enables random access which does not cause a load on a mobile station apparatus in an Advanced-EUTRA system. A wireless communication system in which a base station apparatus allocates a plurality of component carriers to a mobile station apparatus, and the base station apparatus and the mobile station apparatus perform communication via the component carriers, wherein the base station apparatus notifies the mobile station apparatus of allocation information of component carriers, setting information of a component carrier including information on random access, and setting information of a component carrier not including the information on random access; and the mobile station apparatus receives the allocation information and the setting information, and executes a random access procedure only in the component carrier in which the information on random access is included in the setting information of the component carrier, among the plurality of component carriers allocated from the base station apparatus.

Claims

1. A terminal apparatus comprising:

a radio unit configured to;

receive first component carrier setting information and second component carrier setting information, wherein;

the first component carrier setting information includes information related to random access and includes information related to configuration of physical channel of a first component carrier,

the second component carrier setting information does not include the information related to random access and includes information related to configuration of physical channel of one or more second component carriers,

the information related to random access includes position information of random access channel, sequence information and information related to sequence group, and

resources on each of a plurality of component carriers which include the first component carrier and the one or more second component carriers are allocated by the base station apparatus;

in a case of receiving random access instruction information, set a random access preamble based on a preamble number included in the random access instruction information;

otherwise set a random access preamble based on the information related to random access included in the first component carrier setting information;

transmit the random access preamble on the first component carrier; and

communicate with the base station apparatus by using one or more component carriers.

2. The terminal apparatus according to claim 1, wherein

the second component carrier setting information includes another information related to random access.

3. A base station apparatus comprising:

a radio unit configured to;

allocate resources on each of a plurality of component carriers, wherein the plurality of component carriers include a first component carrier and one or more second component carriers;

transmit first component carrier setting information and second component carrier setting information, wherein;

the first component carrier setting information includes information related to random access and includes information related to configuration of physical channel of the first component carrier,

the second component carrier setting information does not include the information related to random access and includes information related to configuration of physical channel of the one or more second component carriers, and

the information related to random access includes position information of random access channel, sequence information and information related to sequence group; and

in a case that the terminal apparatus is made to perform random access, transmit random access instruction information which includes a preamble number and a random access channel number.

4. The base station apparatus according to claim 3, wherein

the second component carrier setting information includes another information related to random access.

5. A random access method applied to a terminal apparatus, the random access method comprising:

receiving first component carrier setting information and second component carrier setting information, wherein;

the first component carrier setting information includes information related to random access and includes information related to configuration of physical channel of a first component carrier,

the second component carrier setting information does not include the information related to random access and includes information related to configuration of physical channel of one or more second component carriers,

the information related to random access includes position information of random access channel, sequence information and information related to sequence group, and

resources on each of a plurality of component carriers which include the first component carrier and the one or more second component carriers are allocated by the base station apparatus;

in a case of receiving random access instruction information, set a random access preamble based on a preamble number included in the random access instruction information;

otherwise set a random access preamble based on the information related to random access included in the first component carrier setting information;

transmitting the random access preamble on the first component carrier; and

communicating with the base station apparatus by using one or more component carriers.

6. The random access method according to claim 5, wherein

the second component carrier setting information includes another information related to random access.

9. A processing device that is mounted in the terminal apparatus, wherein the processing device performs the random access method according to claim 5.

10. A processing device that is mounted in the terminal apparatus, wherein the processing device performs the random access method according to claim 6.

7. A random access method applied to a base station apparatus, the random access method comprising:

allocating resources on each of a plurality of component carriers, wherein the plurality of component carriers include a first component carrier and one or more second component carriers;

transmitting first component carrier setting information and second component carrier setting information, wherein;

the first component carrier setting information includes information related to random access and includes information related to configuration of physical channel of the first component carrier,

the second component carrier setting information does not include the information related to random access and includes information related to configuration of physical channel of the one or more second component carriers, and

the information related to random access includes position information of random access channel, sequence information and information related to sequence group; and

in a case that the terminal apparatus is made perform random access, transmit random access instruction information which includes a preamble number and a random access channel number.

8. The random access method according to claim 7, wherein

the second component carrier setting information includes another information related to random access.

11. A processing device that is mounted in the base station apparatus, wherein the processing device performs the random access method according to claim 7.

12. A processing device that is mounted in the base station apparatus, wherein the processing device performs the random access method according to claim 8.