Patent EP0917305A2 successfully refreshed from Google Patents.
EP0917305A2
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EP
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Communication method, transmitting method, receiving method, base station and terminal device
Assignee: Sony Corp
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Filing: 1998-09-22
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Granted: —
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Expires: 2018-09-22
Abstract
Abstract In a base station of wireless telephone system, the control channel is set efficiently. A channel group for control information communication is provided as a channel to transmit from a base station in addition to the channel for information communication TCH with the terminal device. Among the channel group for control information communication, the frequency channel where the initial acquisition channel ICH exists is fixed to a predetermined frequency channel, and the time slot in which the initial acquisition information is transmitted is set by a predetermined random number sequence among the frequency channels assigned to the initial acquisition channel ICH to store the set random number information in the initial acquisition information to be transmitted. Then, the time slot in which the initial acquisition channel is transmitted is determined based on the random number obtained by receiving the frequency channel where the initial acquisition channel ICH exists at the terminal device.
Inventors
- 👤 Kazuyuki c/o Sony Corporation Sadoka
- 👤 Mitsuhiro c/o Sony Corporation Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:42
CPC Classifications
H; H04; H04J; H04J13/00; H04J13/0007; H04J13/0022; H04B; H04B1/00; H04B1/69; H04B1/713; H04B1/7156; H04B7/00; H04B7/24; H04B7/26; H04B7/2615; H04B7/2643; H04J13/0074; H04B2001/71563; H04W; H04W16/00; H04W16/02; H04W16/10; H04W48/00; H04W48/08; H04W48/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
191 words
A communication method of forming time slots by sectioning time into every
predetermined period of time and communicating between a base station and an arbitrary
number of terminal devices intermittently with a predetermined number of time slot period,
wherein a frequency channel for communication changes into a predetermined state in a time
slot unit, said communication method comprising the steps of: providing a channel group for control information communication as a channel for transmitting
from said base station, in addition to channels for information communication to
communicate with said terminal devices; fixing the frequency channel, where an initial acquisition channel exists, of the channel group
for control information communication to a predetermined frequency channel; in the frequency channel assigned to the initial acquisition channel, setting a time slot in which
the initial acquisition information is transmitted by a predetermined random number
sequence, and storing the set random number information in said initial acquisition information
to be transmitted; and determining the time slot in which the initial acquisition channel is transmitted, based on the
random number obtained by receiving at said terminal devices the frequency channel where
said initial acquisition channel exists.
Claim 2
Dependent Claim
57 words
The communication method according to claim 1, wherein the plural number of
frequency channels where said initial acquisition channel exists are positioned in a transmission
frequency band assigned to said base station at the same frequency
intervals; and the phase of said predetermined random number sequence for
setting said time slot is offset for each frequency channel.
Claim 3
Dependent Claim
78 words
The communication method according to claim 1 or 2, wherein the frequency channel
or the time slot, where the broadcast channel exists, of the channel group for control
information communication is set by the random number stored in said initial
acquisition channel; and the frequency channel or the time slot where the broadcast
channel exists is determined, based on the random number obtained by receiving at said
terminal devices the frequency channel where said initial acquisition channel exists.
Claim 4
Dependent Claim
65 words
The communication method according to claim 2, wherein information representing the
appearance frequency of the initial acquisition channel is added to the initial acquisition
information of said initial acquisition channel; and all frequency channels where said initial
acquisition channel exists are determined, by the information representing the appearance
frequency obtained by receiving at said terminal devices the frequency channel where said
initial acquisition channel exists.
Claim 5
Dependent Claim
67 words
The communication method according to anyone of claims 1 to 4, wherein a signal
transmitted from a base station at said time slot is a multi-carrier signal in which a plurality of
sub-carrier signals are arranged on one frequency channel and information
dispersed to a plurality of sub-carrier signals is modulated; and information dispersed to a
plurality of sub-carriers and modulated is demodulated in said terminal device.
Claim 6
Dependent Claim
137 words
A transmitting method of forming time slots by sectioning time into every
predetermined period of time and transmitting intermittently with a predetermined number of
time slot period, wherein a frequency channel for transmission changes into a predetermined
state in a time slot unit, said transmitting method comprising the steps of: providing a channel group for control information transmission as a channel for transmission,
in addition to channels for information transmission; fixing the frequency channel, where an initial acquisition channel exists, of the channel group
for control information transmission to a predetermined frequency channel; and in the frequency channel assigned to the initial acquisition channel, setting a time slot in which
the initial acquisition information is transmitted by a predetermined random number sequence,
and storing the set random number information in said initial acquisition information to be
transmitted.
Claim 7
Dependent Claim
53 words
The transmitting method according to claim 6, wherein the frequency channels where
said initial acquisition channel exists are positioned in a transmission frequency band assigned
to own station at the same frequency intervals; and the phase of said predetermined random number sequence for setting said time slot is offset for
each frequency channel.
Claim 8
Dependent Claim
38 words
The transmitting method according to claim 6 or 7, wherein the frequency channel or
the time slot to be transmitted as a broadcast channel of the channel group for control
information communication is designated by said random number.
Claim 9
Dependent Claim
30 words
The transmitting method according to claim 7, wherein information representing the
appearance frequency of the initial acquisition channel is added to the initial acquisition
information of said initial acquisition channel.
Claim 10
Dependent Claim
47 words
The transmitting method according to anyone of claims 5 to 9, wherein a signal
transmitted at said time slot is a multi-carrier signal in which a plurality of sub-carrier signals
are arranged on one frequency channel and information dispersed to a plurality of sub-carrier
signals is modulated.
Claim 11
Dependent Claim
115 words
A receiving method of forming time slots by sectioning time into predetermined period
of time and receiving intermittently with a predetermined number of time slot period, wherein a
frequency channel for reception changes into a predetermined state in a time slot unit, said
receiving method comprising the steps of: providing a channel group for control information reception as a channel for reception, in
addition to channels for information reception; receiving the frequency channel, where the initial acquisition channel exists, of the channel
group for control information reception by the predetermined frequency channel; and determining the time slot in which the initial acquisition channel is transmitted, by the random
number included in the received frequency channel.
Claim 12
Dependent Claim
39 words
The receiving method according to claim 11, wherein the frequency channel or the time
slot where the broadcast channel exists is determined, based on said random number obtained
by receiving the frequency channel where said initial acquisition channel exists.
Claim 13
Dependent Claim
40 words
The receiving method according to claim 11 or 12, wherein all frequency channels
where said initial acquisition channel exists are determined, by the information representing the
appearance frequency obtained by receiving the frequency channel where said initial acquisition
channel exists.
Claim 14
Dependent Claim
38 words
The receiving method according to anyone of claims 11 to 13, wherein a plurality of
sub-carrier signals in one frequency channel are received and information which is dispersed to
a plurality of sub-carrier signals and modulated is demodulated.
Claim 15
Dependent Claim
178 words
A base station for forming time slots by sectioning time into predetermined period of
time and communicating with terminal devices intermittently with a predetermined number of
time slot period, and for performing the frequency hopping that the frequency channel for
communication changes into a predetermined state in a time slot unit, said base station wherein
processing means (14) of a channel for information communication and processing means of a
channel for control information communication are provided; an initial acquisition channel and
a broadcast channel are provided as a channel group for control information communication
which is transmitted by said processing means of a channel for control information
communication; said initial acquisition channel is fixed to a predetermined frequency channel
and transmitted; andin the frequency channel where the initial acquisition channel exists, the
time slot in which the initial acquisition information is transmitted is set by a predetermined
random number sequence generated by said processing means of a channel for control
information communication, and the set random number information is stored in said initial
acquisition information to be transmitted.
Claim 16
Dependent Claim
111 words
The base station according to claim 15, wherein at said processing means (14) of a
channel for control information communication, the phase of said predetermined random
number sequence is offset to generate a plurality of random numbers at the same time; the
plural number of frequency channels where said initial acquisition channel exists are prepared
in a transmission frequency band assigned to own station at the same frequency intervals; and
in each of frequency channels where the plural number of initial acquisition channels to be
transmitted, the time slot in which the initial acquisition information is transmitted is set
individually by a plurality of random numbers generated at the same time.
Claim 17
Dependent Claim
52 words
The base station according to claim 15 or 16, wherein the frequency channel or the time
slot, which is transmitted as a broadcast channel of the channel group for control information
communication by said processing means (14) of a channel for control information
communication, is set by said predetermined random number sequence.
Claim 18
Dependent Claim
40 words
The base station according to claim 16, wherein information representing the
appearance frequency of the initial acquisition channel is added to the initial acquisition
information of initial acquisition channel by said processing means of a channel for control
information communication.
Claim 19
Dependent Claim
67 words
The base station according to anyone of claims 15 to 18, wherein at said processing
means of a channel for information communication and said processing means of a channel for
control information communication, as a transmission processing, a plurality of sub-carrier
signals are arranged in one frequency channel and information is dispersed into a plurality of
sub-carrier signals and modulated, which is treated as a multi-carrier signal.
Claim 20
Dependent Claim
151 words
A terminal device of forming time slots by sectioning time into predetermined period of
time and communicating intermittently with a predetermined number of time slot period, and of
performing the frequency hopping that the frequency channel for communication changes into
a predetermined state in a time slot unit, said terminal device wherein processing means (14) of
a channel for information communication and processing means of a channel for control
information communication are provided; the frequency channel, where the initial acquisition channel exists, of the channel group for
control information reception received by said processing means of a channel for control
information communication is received in a predetermined frequency channel; and the time slot in which the initial acquisition information is transmitted is determined by the
random number information included in the received frequency channel, and the time slot is
received by the processing means of a channel for control information communication.
Claim 21
Dependent Claim
61 words
The terminal device according to claim 20, wherein the frequency channel or the time
slot where a broadcast channel exists is determined based on the random number information
obtained by receiving the frequency channel where the initial acquisition channel exists by said
processing means of a channel for control information communication, and the determined
frequency channel or time slot is received.
Claim 22
Dependent Claim
51 words
The terminal device according to claim 20 or 22, wherein regarding the information
representing the appearance frequency obtained by receiving the frequency channel where said
initial acquisition channel exist, all frequency channel where said initial acquisition channel
exists are determined by said processing means of a channel for control information
communication.
Claim 23
Dependent Claim
57 words
The terminal device according to claim 20, wherein at said processing means of a
channel for information communication and said processing means of a channel for control
information communication, as a reception processing, a plurality of sub-carrier signals in one
frequency channel are received and information dispersed to a plurality of sub-carrier signals
and modulated is demodulated.
References Cited (Backward Citations)
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