Apparatus and method for dynamically selecting a random access response window value for use with random access procedures in a network
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorMattias Bergström
Life of this patent
Estimating the term…
Abstract
A method is provided in a user equipment node for dynamically selecting a random access response window value for use with random access procedures in a network. The method comprises the step of determining if a random access response window value is being signalled from the network for a first serving cell currently associated with the user equipment node. If so, the random access response window value being signalled for the first serving cell is used when performing a random access procedure in the first serving cell. If not, an alternative random access response window value for the first serving cell is used when performing a random access procedure in the first serving cell.
Claims50
A method in a user equipment node for dynamically selecting a random access response window value for use with random access procedures in a network, the method comprising the steps of:
- determining if a random access response window value is being signalled from the network for a first serving cell currently associated with the user equipment node;
- and
- if so, using the random access response window value being signalled for the first serving cell, when performing a random access procedure in the first serving cell;
- and
- if not, using an alternative random access response window value for the first serving cell, when performing a random access procedure in the first serving cell.
A user equipment node adapted to dynamically select a random access response window value for use with random access procedures in a network, the user equipment node comprising:
- a monitoring unit adapted to determine if a random access response window value is being signalled from the network for a first serving cell currently associated with the user equipment node;
- and
- a processing unit adapted to use the random access response window value, if one is being signalled for the first serving cell, when performing a random access procedure in the first serving cell;
- wherein the processing unit is further adapted to use an alternative random access response window value when a random access response window value is not being signalled for the first serving cell, when performing a random access procedure in the first serving cell.
A method in a network node for controlling how a user equipment node dynamically selects a random access response window value for use with random access procedures in the network, the method comprising the steps of:
- transmitting a control signal to the user equipment node in a first serving cell, wherein the control signal comprises control information for enabling the user equipment node to select a second serving cell whose random access response window value is to be used as an alternative random access response window value, when performing random access procedures in a first serving cell.
A network node for controlling how a user equipment node dynamically selects a random access response window value for use with random access procedures in a network, the network node comprising:
- a transmitting unit adapted to transmit a control signal to the user equipment node in a first serving cell, wherein the control signal comprises control information for enabling the user equipment node to select a second serving cell whose random access response window value is to be used as an alternative random access response window value, when performing random access procedures in a first serving cell.
A method in a user equipment node for dynamically selecting a random access response window value for use with random access procedures in a network, the method comprising the steps of:
- maintaining a first random access response window value relating to a contention based random access, CBRA, procedure;
- maintaining a second random access response window value relating to a contention free random access, CFRA, procedure;
- and
- dynamically selecting the first or second random access response window value when performing a random access procedure in a current serving cell, according to whether a CBRA or CFRA procedure is being performed.
A user equipment node for dynamically selecting a random access response window value for use with random access procedures in a network, the user equipment node comprising:
- a storage unit adapted to store a first random access response window value relating to a contention based random access, CBRA, procedure, and a second random access response window value relating to a contention free random access, CFRA, procedure;
- and
- a processing unit adapted to dynamically select the first or second random access response window value when performing a random access procedure in a current serving cell, according to whether a CBRA or CFRA procedure is being performed.
A method in a network node for controlling how a user equipment node dynamically selects a random access response window value for use with random access procedures in the network, the method comprising the steps of:
- during a first mode of operation, signalling both CBRA and CFRA response window values to a user equipment node;
- during a second mode of operation, signalling only one of CBRA or CFRA response window values to the user equipment node;
- and
- during a third mode of operation, signalling neither of the CBRA or CFRA response window values to the user equipment, and instead signalling a default random access response window value;
- wherein the method comprises the steps of switching between at least two of the first, second or third modes of operation.
A network node for controlling how a user equipment node dynamically selects a random access response window value for use with random access procedures in the network, the network node comprising a processing unit adapted such that:
- during a first mode of operation, both CBRA and CFRA response window values are signalled to a user equipment node;
- during a second mode of operation, only one of CBRA or CFRA response window values are signalled to the user equipment node;
- and
- during a third mode of operation, neither of the CBRA or CFRA response window values are signalled to the user equipment, and instead a default random access response window value is signalled;
- wherein the processing unit is further adapted to switch between at least two of the first, second or third modes of operation.
Dependencies are inferred from the claim text.