Terminal device and base station device

• US 8,280,421 B2
• Filed: 08/08/2008
• Issued: 10/02/2012
• Est. Priority Date: 08/10/2007
• Status: Expired due to Fees

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nanri, Masahiko, Onuki, Tsutomu, Kawamura, Takayuki
• Primary Examiner(s): TRINH, TAN H
• Application Number:
  US12/672,978
• Publication Number:
  US 20120004002A1
• Time in Patent Office: 1,516 Days
• Field of Search: 455/456.5, 455/456.6, 455/509, 455/511, 455/424, 455/425, 455/450, 455/452.1, 455/451, 455/404.2, 455/440, 455/452.2, 455/456.1, 455/456.2, 455/464, 455/515, 455/67.1, 455/423, 455/403, 455/561, 455/562, 455/522, 455/436, 455/452, 455/69, 455/405, 455/67.16, 370/345, 370/335, 370/342, 370/329, 370/336, 370/347, 370/333, 370/280, 370/350
• US Class Current: 455/509
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 27/26132 using repetition
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04W 74/0891 for synchronized access

Abstract

A terminal device free of interference between an RACH and a PUSCH or the like even when a base station device with a large coverage is installed. In the device, a configuration number extraction unit (103) extracts a configuration number from a BCH received by a BCH reception unit (102). A control unit (104) determines the corresponding RACH format (the necessity of repetition, the CP length TCP, the second preamble length TPRE2, and the GT length TGT) according to the configuration number, notifies a repetition unit (109) of the result of the judgment of necessity of repetition, notifies the repetition unit (109) of the second preamble length TPRE2, notifies a CP addition unit (110) of the CP length TCP, and notifies a GT addition unit (112) of the GT length TGT. When the repetition unit (109) receives the notification of performing the repetition, it performs the repetition according to the second preamble length received from a TPRE2 determination section (154). The CP addition unit (110) produces a CP according to the CP length received from a TCP determination section (155).

Claims

1. A terminal apparatus comprising:

a control section configured to set a length of a non-transmission interval included in a RACH (random access channel) transmitted to a base station apparatus based on information about a cell radius of the base station apparatus; and

a RACH transmitting section configured to transmit the RACH including the non-transmission interval having the length set by the control section to the base station apparatus,

wherein the RACH transmitted by the RACH transmitting section comprises a redundant interval, a first initial connection request signal interval arranged after the redundant interval, a second initial connection request signal interval arranged after the first initial connection request signal interval, and the non-transmission interval arranged immediately after the second initial connection request signal interval; and

wherein the length of the second initial connection request signal interval is shorter than the first initial connection request signal interval.

2. The terminal apparatus according to claim 1, wherein the control section is further configured to set the length of the non-transmission interval to be equal to or greater than a total value of a downlink propagation delay time and an uplink propagation delay time.

3. A terminal apparatus comprising:

a control section configured to set a length of a non-transmission interval included in a RACH (random access channel) transmitted to a base station apparatus based on information about a cell radius of the base station apparatus; and

a RACH transmitting section configured to transmit the RACH including the non-transmission interval having the length set by the control section to the base station apparatus,

wherein the RACH transmitted by the RACH transmitting section comprises a first initial connection request signal interval, a second initial connection request signal interval arranged after the first initial connection request signal interval, and the non-transmission interval arranged immediately after the second initial connection request signal interval; and

wherein the RACH has no signal interval before the first initial connection request signal interval.

4. The terminal apparatus according to claim 3, wherein the control section is further configured to set the length of the non-transmission interval to be equal to or greater than a total value of a downlink propagation delay time and an uplink propagation delay time.

5. A terminal apparatus comprising:

a control section configured to set a length of a non-transmission interval included in a RACH (random access channel) transmitted to a base station apparatus based on information about a cell radius of the base station apparatus; and

a RACH transmitting section configured to transmit the RACH including the non-transmission interval having the length set by the control section to the base station apparatus,

wherein the RACH transmitted by the RACH transmitting section comprises a redundant interval, a first initial connection request signal interval arranged after the redundant interval, a second initial connection request signal interval arranged after the first initial connection request signal interval, and the non-transmission interval arranged immediately after the second initial connection request signal interval; and

wherein the control section is further configured to set a length of the redundant interval according to the length of the non-transmission interval while keeping a length of the RACH constant.

6. The terminal apparatus according to claim 5, wherein the control section is further configured to set the length of the non-transmission interval to be equal to or greater than a total value of a downlink propagation delay time and an uplink propagation delay time.