Patent EP1041850A1 successfully refreshed from Google Patents.
EP1041850A1
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EP
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Method and apparatus for changing radio link configurations in a mobile telecommunications system with soft handover
Assignee: Nortel Networks SA
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Filing: 1999-04-01
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Granted: —
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Expires: 2019-04-01
Abstract
Abstract A telecommunications system and a method of operating the same are described in which mobile terminals may communicate with base station transceivers over an air interface, a communication to another user terminal being supported in macrodiversity by radio links between a plurality of base station transceivers and a mobile terminal. The radio links in macrodiversity have a set of common radio link configuration parameters. When a change in the common configuration is necessary, the system transmits a radio link configuration change message to each of the base station transceivers and the mobile terminal and waits before implementation of the radio link configuration change until an acknowledgement has been received from at least one base station transceiver in transmitting communication with the mobile terminal, at least one base station transceiver in receiving communication with the mobile terminal and the mobile terminal.
Inventors
- 👤 Denis Fauconnier
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 22:38
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/16; H04W36/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
130 words
A method of operating a telecommunications system in which mobile terminals
may communicate with base station transceivers over an air interface, a communication to
another user terminal being supported in macrodiversity by radio links between a plurality
of base station transceivers and a mobile terminal, the radio links in macrodiversity having
a set of common radio link configuration parameters, the method comprising the steps of: transmitting a radio link configuration change message to each of the base station
transceivers and the mobile terminal; and waiting before implementation of the radio link configuration change until an
acknowledgement has been received from at least one base station transceiver in
transmitting communication with the mobile terminal, at least one base station transceiver
in receiving communication with the mobile terminal and the mobile terminal.
Claim 2
Dependent Claim
33 words
The method according to claim 1, wherein the waiting step includes waiting for
confirmation from a base station transceiver in receiving communication with the mobile
terminal which provides a minimum quality of service.
Claim 3
Independent Claim
26 words
The method according to claims 1 or 2, further comprising the step of transmitting a
radio link configuration apply message after receipt of the confirmation messages.
Claim 4
Dependent Claim
64 words
The method according to claim 3, wherein the apply message is transmitted first to the
mobile terminal for application of the new configuration to uplink messages from the
mobile terminal, and the apply message is transmitted to the base station transceivers for
application of the new configuration to transmissions in the downlink only after receipt of
uplink transmissions in accordance with the new configuration.
Claim 5
Independent Claim
27 words
The method according to any one of the previous claims, wherein a change in common
configuration is detected by a change in a property of received signals.
Claim 6
Dependent Claim
16 words
The method according to claim 5, wherein the property is the polarity of error detection
data.
Claim 7
Independent Claim
60 words
The method according to any previous claim, wherein the radio links include dedicated
channels for the transmission of control data and user data between the mobile terminal
and the plurality of base station transceivers, and transmissions on the dedicated channels
include a transmit format combination indicator for indicating the currently valid
combination of common transmission parameters of the radio links.
Claim 8
Independent Claim
43 words
The method according to any previous claim, wherein the common radio link
configuration includes at least one of transport block size, transport block set size,
transmission time interval, type of channel coding, type of channel interleaving, rate
matching or a combination of these.
Claim 9
Dependent Claim
131 words
A telecommunication system in which mobile terminals communicate with base
station transceivers over an air interface, a communication between a mobile terminal in
macrodiversity and another user terminal being connected by radio links to a plurality of
base station transceivers, the radio links having a set of common radio link configuration
parameters, the system comprising: a network element adapted for transmitting a change in radio link configuration
message to the plurality of base station transceivers and the mobile terminal, and for
waiting before application of the change in configuration for an acknowledgement of the
receipt of the change message from at least one the base station transceiver in transmitting
communication with the mobile terminal, at least one base station transceiver in receiving
communication with the mobile terminal and the mobile terminal.
Claim 10
Dependent Claim
34 words
The system according to claim 9, wherein the system is adapted to wait for
confirmation from a base station transceiver in receiving communication with the mobile
terminal which provides a minimum quality of service.
Claim 11
Dependent Claim
26 words
The system according to claim 9 or 10, wherein the mobile terminal is adapted to
change a property of transmissions on change of the uplink configuration.
Claim 12
Dependent Claim
18 words
The system according to claim 11, wherein the change in property is the polarity of
error detection data.
Claim 13
Independent Claim
31 words
The system according to any of claims 9 to 12, wherein the network element is also
adapted to transmit a radio link configuration apply message after receipt of the
confirmation messages.
Claim 14
Dependent Claim
69 words
The system according to claim 13, wherein the network element is adapted to transmit
the apply message first to the mobile terminal for application of the new configuration to
uplink messages from the mobile terminal, and to transmit the apply message to the base
station transceivers for application of the new configuration to transmissions in the
downlink only after receipt of uplink transmissions in accordance with the new
configuration.
Claim 15
Dependent Claim
133 words
A network element for use in a telecommunication system in which mobile
terminals communicate with base station transceivers over an air interface, a
communication between a mobile terminal in macrodiversity and another user terminal
being connected by radio links to a plurality of base station transceivers, the radio links
having a set of common radio link configuration parameters, the network element being
adapted for transmitting a change in radio link configuration message to the plurality of
base station transceivers and the mobile terminal, and for waiting before application of the
change in configuration for an acknowledgement of the receipt of the change message
from at least one the base station transceiver transmitting messages to the mobile terminal,
at least one base station transceiver receiving messages from the mobile terminal and the
mobile terminal.
Claim 16
Independent Claim
132 words
A method of operating network element in a telecommunications system in which
mobile terminals may communicate with base station transceivers over an air interface, a
communication to another user terminal being supported in macrodiversity by radio links
between a plurality of base station transceivers and a mobile terminal, the radio links
having a set of common radio link configuration parameters, the method comprising the
steps of: transmitting from the network element a radio link configuration change message
to each of the base station transceivers and the mobile terminal; and waiting before applying the radio link configuration change until an
acknowledgement has been received from at least one base station transceiver transmitting
messages to the mobile terminal, at least one base station transceiver receiving messages
from the mobile terminal and the mobile terminal.
Claim 17
Dependent Claim
99 words
A mobile terminal for use in a telecommunications system in which the mobile terminal
may communicate with base station transceivers over an air interface, a communication to
another user terminal being supported in macrodiversity by radio links between a plurality
of base station transceivers and the mobile terminal, the radio links having a set of
common radio link configuration parameters, the mobile terminal being adapted to receive
a common configuration confirmation message and to transmit a confirmation of receipt
of this message and to apply the new common configuration on uplink transmissions after
receipt of a configuration apply message.
References Cited (Backward Citations)
WO1995022857A1
Cited
WO1999009779A1
Cited
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