EP1133079A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Communication system, transmitter and receiver, and communication method
Assignee: Sony Corp
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Filing: 2000-06-29
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Granted: —
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Expires: 2020-06-29
Abstract
Abstract The communication system comprises a transmitter (1A) and a receiver (2A). Both, the transmitter (1A) and the receiver (2A) are capable of operating in a normal mode or a compressed mode in which setting of a predetermined idle time is allowed. The transmitter (1A) effects transmission power control to a frame in each mode. When operating in the compressed mode, the transmitter (1A) changes a position of the idle time in such a manner so as to minimize adverse affect of a transmission power control error that occurs after the idle time.
Inventors
- 👤 Kazushi Yamamoto
- 👤 Hideshi Murai
- 👤 Yasuhiro Yano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/28; H04W52/283; H04B7/01; H04W52/287; H04W52/288; H04W52/30; H04W52/36; H04W52/362; H04W52/38; H04W52/44
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
81 words
A communication system including a transmitter and
a receiver both capable of operating in a normal mode or
a compressed mode in which setting of a predetermined
non-transmission time is allowed, said transmitter
effecting transmission power control to a frame in each mode, wherein, when operating in the compressed mode, said
transmitter changes a position of the non-transmission time
in such a manner so as to minimize adverse affect of a
transmission power control error that occurs after the
non-transmission time.
Claim 2
Dependent Claim
36 words
The communication system according to claim 1, wherein, when the unit of interleaving is set to one
frame, said transmitter places the non-transmission time
in the compressed mode rearward from a center of a compressed
frame.
Claim 3
Dependent Claim
33 words
The communication system according to claim 2, wherein said transmitter places data of at least one
slot after the non-transmission time within the compressed
frame, so that a satisfactory interleave effect is achieved.
Claim 4
Dependent Claim
49 words
The communication system according to claim 1, wherein, when the unit of interleaving is set to one
frame and the non-transmission time extends over two frames,
said transmitter places the non-transmission time in the
compressed mode longer in a first frame and set relatively
shorter in a second frame.
Claim 5
Dependent Claim
91 words
The communication system according to claim 2, wherein said receiver compares an estimated value of
a maximum Doppler frequency with a preset threshold of the
maximum Doppler frequency, and when a frequency of the
estimated value is higher than the threshold, negotiates
with said transmitter not to effect control as to a change
of the position of the non-transmission time; and when the frequency of the estimated value is lower
than the threshold, said transmitter places the
non-transmission time in the compressed mode rearward from
the center of the compressed frame.
Claim 6
Dependent Claim
54 words
The communication system according to claim 2, wherein said transmitter and receiver set a step size
of power in transmission power control larger than a
predetermined value set as a reference value through
negotiation, and reduce a number of slots needed for the
transmission power control error convergence that occurs
after the non-transmission time.
Claim 7
Dependent Claim
65 words
The communication system according to claim 5, wherein
in an area where moving at a high speed is expected, the
control as to a change of the position of the non-transmission
time is not effected, and in an area where moving at a high
speed is not expected, the non-transmission time in the
compressed mode is placed rearward from the center of the
compressed frame.
Claim 8
Dependent Claim
71 words
A transmitter that operates in a normal mode or a
compressed mode in which setting of a predetermined
non-transmission time is allowed and effecting transmission
power control to a frame in each mode, wherein, when operating in the compressed mode, said
transmitter changes a position of the non-transmission time
in such a manner so as to minimize adverse affect of a
transmission power control error that occurs after the
non-transmission time.
Claim 9
Dependent Claim
35 words
The transmitter according to claim 8, wherein, when the unit of interleaving is set to one
frame, said transmitter places the non-transmission time
in the compressed mode rearward from a center of a compressed
frame.
Claim 10
Dependent Claim
32 words
The transmitter according to claim 9, wherein said transmitter places data of at least one
slot after the non-transmission time within the compressed
frame, so that a satisfactory interleave effect is achieved.
Claim 11
Dependent Claim
48 words
The transmitter according to claim 8, wherein when the unit of interleaving is set to one
frame and the non-transmission time extends over two frames,
said transmitter places the non-transmission time in the
compressed mode longer in a first frame and set relatively
shorter in a second frame.
Claim 12
Dependent Claim
54 words
The transmitter according to claim 9, wherein, through negotiation with a receiver, said
transmitter sets a step size of power in transmission power
control larger than a predetermined value set as a reference
value, and reduces a number of slots needed for the
transmission power control error convergence that occurs
after the non-transmission time.
Claim 13
Dependent Claim
55 words
A receiver, wherein said receiver compares an estimated value of
a maximum Doppler frequency with a preset threshold of the
maximum Doppler frequency, and when a frequency of the
estimated value is higher than the threshold, negotiates
with a transmitter not to effect control as to a change of
a position of a non-transmission time.
Claim 14
Dependent Claim
50 words
A receiver, wherein, said receiver, through negotiation with a
transmitter, sets a step size of power in transmission power
control larger than a predetermined value set as a reference
value, and reduces a number of slots necessary for a
transmission power control error convergence that occurs
after the non-transmission time.
Claim 15
Dependent Claim
80 words
A communication method comprising: a transmission step and a reception step operating
in a normal mode or a compressed mode in which setting of
a predetermined non-transmission time is allowed, the
transmission step including effecting of transmission power
control, wherein, in the transmission step, when operating in
the compressed mode, a position of the non-transmission time
is changed in such a manner so as to minimize adverse affect
of a transmission power control error that occurs after the
non-transmission time.
Claim 16
Dependent Claim
39 words
The communication method according to claim 15, wherein, in the transmission step, when the unit of
interleaving is set to one frame, the non-transmission time
in the compressed mode is placed rearward from a center of
a compressed frame.
Claim 17
Dependent Claim
36 words
The communication method according to claim 16, wherein, in the transmission step, data of at least
one slot is placed after the non-transmission time within
the compressed frame, so that a satisfactory interleave
effect is achieved.
Claim 18
Dependent Claim
53 words
The communication method according to claim 15, wherein, in the transmission step, when the unit of
interleaving is set to one frame and the non-transmission
time extends over two frames, the non-transmission time in
the compressed mode is set relatively longer in a first frame
and set relatively shorter in a second frame.
Claim 19
Dependent Claim
100 words
The communication method according to claim 16, wherein, in the reception step, an estimated value
of a maximum Doppler frequency is compared with a preset
threshold of the maximum Doppler frequency, and when a
frequency of the estimated value is higher than the threshold,
a negotiation is made with a transmitter not to effect control
as to a change of the position of the non-transmission time;
and in the transmission step, when the frequency of the
estimated value is lower than the threshold, the
non-transmission time in the compressed mode is placed
rearward from the center of the compressed frame.
Claim 20
Dependent Claim
59 words
The communication method according to claim 16, wherein in the transmission step and reception step,
a step size of power in transmission power control is set
larger than a predetermined value set as a reference value
through negotiation, and a number of slots needed for the
transmission power control error convergence that occurs
after the non-transmission time is reduced.
Claim 21
Dependent Claim
65 words
The communication method according to claim 19,
wherein in an area where moving at a high speed is expected,
the control as to a change of the position of the
non-transmission time is not effected, and in an area where
moving at a high speed is not expected, the non-transmission
time in the compressed mode is placed rearward from the center
of the compressed frame.
References Cited (Backward Citations)
No citation records indexed.
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