MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND MOBILE STATION APPARATUS CONTROL PROGRAM

• US 20130034069A1
• Filed: 02/21/2011
• Published: 02/07/2013
• Est. Priority Date: 03/24/2010
• 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: Uemura, Katsunari
• Granted Patent: US 8,976,748 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/02 Hybrid access
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

When a mobile station apparatus capable of being connected to a base station apparatus by using a plurality of frequency bands performs an uplink transmission, the mobile station apparatus selects the optimum combination among the combinations of a plurality of frequency bands and uplink transmission methods, and performs the uplink transmission. The mobile station apparatus aggregates a plurality of cells to connect the same to a base station apparatus and requests, from the base station apparatus, an uplink radio resource required to transmit uplink data. The mobile station apparatus selects, based on a first condition, an uplink for making a radio resource request using a random access channel from the plurality of cells, and selects, based on a second condition, either the radio resource request using the random access channel or the transmission of uplink data using an uplink radio resource common to other mobile station apparatuses.

Claims

1-18. -18. (canceled)

19. A mobile station apparatus aggregating a plurality of cells to connect the same to a base station apparatus, wherein

as conditions for selecting a cell used to making a request of an uplink radio resource required to transmit uplink data, and an uplink transmission method in said cell, a first condition and a second condition that are transmitted from said base station apparatus through the use of an RRC message are individually set, wherein

based on said first condition, a cell for making a radio resource request using a physical random access channel is selected from said plurality of cells to which a physical random access channel is set, and wherein

based on said second condition, a method for transmitting an uplink of the cell selected based on said first condition is selected.

20. The mobile station apparatus according to claim 19, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink corresponding to a downlink of a cell having the best reception quality.

21. The mobile station apparatus according to claim 19, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink of a cell capable of most quickly transmitting a physical random access channel.

22. The mobile station apparatus according to claim 19, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink corresponding to a downlink of a cell having the best reception quality among uplinks of a cell capable of most quickly transmitting a physical random access channel.

23. The mobile station apparatus according to claim 20, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

24. The mobile station apparatus according to claim 19, wherein said second condition is that when, to the uplink of the cell selected based on said first condition, an uplink radio resource common to other mobile station apparatuses has been allocated prior to a physical random access channel, the transmission of an uplink data with said uplink radio resource is selected, while when the uplink radio resource common to other mobile station apparatuses has not been allocated prior to a physical random access channel, a radio resource request using the physical random access channel is selected.

35. The mobile station apparatus according to claim 21, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

36. The mobile station apparatus according to claim 22, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

25. A base station apparatus aggregating a plurality of cells to connect the same to a mobile station apparatus, wherein

as conditions for selecting a cell used to request, from said mobile station apparatus, an uplink radio resource, which is required for said mobile station apparatus to transmit uplink data, and an uplink transmission method, a first condition and a second condition are individually set through the use of an RRC message.

26. A communication system, in which a base station apparatus and a mobile station apparatus are connected to each other through aggregation of a plurality of cells, wherein

said base station apparatus

sets, as conditions for selecting a cell used to request the mobile station apparatus for an uplink radio resource, which is required for said mobile station apparatus to transmit uplink data, and an uplink transmission method, a first condition and a second condition are individually set through the use of an RRC message, wherein

said mobile station apparatus

selects, based on said first condition, a cell for making a radio resource request using a physical random access channel from said plurality of cells to which a physical random access channel is set, and selects, based on said second condition, a method for transmitting an uplink of the cell selected based on said first condition.

27. The communication system according to claim 26, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink corresponding to a downlink of a cell having the best reception quality.

28. The communication system according to claim 26, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink of a cell capable of most quickly transmitting a physical random access channel.

29. The communication system according to claim 26, wherein said first condition is that a transmission setting of a random access channel is already made and that the relevant uplink is an uplink corresponding to a downlink of a cell having the best reception quality among uplinks of a cell capable of most quickly transmitting a physical random access channel.

30. The communication system according to claim 27, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

31. The communication system according to claim 26, wherein said second condition is that when, to the uplink of the cell selected based on said first condition, an uplink radio resource common to other mobile station apparatuses has been allocated prior to a physical random access channel, the transmission of an uplink data with said uplink radio resource is selected, while when the uplink radio resource common to other mobile station apparatuses has not been allocated prior to the physical random access channel, the radio resource request using the physical random access channel is selected.

37. The communication system according to claim 28, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

38. The communication system according to claim 29, wherein said first condition includes the fact that a transmission timing of an uplink between said mobile station apparatus and said base station apparatus is already adjusted.

32. A communication method in a communication system, in which a base station apparatus and a mobile station apparatus are connected to each other through aggregation of a plurality of cells, said communication method comprising at least the steps of:

in said base station apparatus,

individually setting a first condition and a second condition through the use of an RRC message, as conditions necessary for selecting a cell used to request, from said mobile station apparatus, an uplink radio resource, which is required for said mobile station apparatus to transmit uplink data, and an uplink transmission method, and

in said mobile station apparatus,

selecting, based on said first condition, a cell for making a radio resource request using a physical random access channel is selected from said plurality of cells to which a physical random access channel is set; and

selecting, based on said second condition, a method for transmitting an uplink of the cell selected based on said first condition.

33. An integrated circuit causing a mobile station apparatus to exert a plurality of functions by being implemented in said mobile station apparatus, said integrated circuit comprising a series of functions of:

aggregating a plurality of cells to connect the same to a base station apparatus;

requesting, from said base station apparatus, an uplink radio resource required to transmit uplink data;

individually setting a first condition and a second condition, which are transmitted from said base station apparatus through the use of an RRC message, as conditions for selecting a cell and an uplink transmission method, used for making a request of an uplink radio resource;

selecting, based on said first condition, a cell for making a radio resource request using a physical random access channel from said plurality of cells to which a physical random access channel is set; and

selecting, based on said second condition, a method of transmitting an uplink of the cell selected based on said first condition.

34. A mobile station apparatus control program for aggregating a plurality of cells to connect the same to a base station apparatus,

wherein the control program converts a series of processing into commands so as to enable a computer to read and execute them, the series of processing including processing of:

aggregating a plurality of cells to connect the same to a base station apparatus;

requesting, from said base station apparatus, an uplink radio resource required to transmit uplink data;

individually setting a first condition and a second condition, which are transmitted from said base station apparatus through the use of an RRC message, as a condition for selecting a cell and an uplink transmission method, used to make a request of an uplink radio resource required to transmit uplink data;

selecting, based on said first condition, a cell for making a radio resource request using a physical random access channel from the plurality of cells to which a physical random access channel is set; and

selecting, based on said second condition, a method for transmitting an uplink of the cell selected based on said first condition.