Dynamic radio resource control state switching
First Claim
1. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
- a capacity manager configured to monitor a network condition of the radio access network;
a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision;
wherein the determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state is based on expected idle time between bursts.
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Accused Products
Abstract
A node (26) controls transitions between radio resource control states for a wireless terminal (30) in a radio access network (24). The radio resource control states comprise a first state and a second state. The node (26) comprises a capacity manager (60) and a radio resource manager (40). The capacity manager (60) is configured to monitor a network condition of the radio access network (24). The radio resource manager (60) is configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision.
11 Citations
35 Claims
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1. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
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a capacity manager configured to monitor a network condition of the radio access network; a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision; wherein the determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state is based on expected idle time between bursts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method in a node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the method comprising:
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determining a network condition in the radio access network; making a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and taking the network condition into consideration when making the decision; and
,directing the wireless terminal either to remain in the first state or switch to the second state in accordance with the decision; wherein the determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state is based on expected idle time between bursts. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A method in a node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the method comprising:
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determining a network condition in the radio access network, wherein the network condition comprises load in the node; making a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and taking the network condition into consideration when making the decision; directing the wireless terminal either to remain in the first state or switch to the second state in accordance with the decision; providing load information regarding the load in the node and taking the load information into consideration when making the decision; wherein; below a lower load threshold, determining the cost of switching to the second state in terms of wireless terminal resource cost; above a higher load threshold, determining the cost of switching to the second state in terms of network resource cost; and between the lower load threshold and the higher load threshold, determining the cost of switching to the second state in terms of a combination of the wireless terminal resource cost and the network resource cost. - View Dependent Claims (29)
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30. A method in a node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the method comprising:
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determining a network condition in the radio access network, wherein the network condition comprises a network congestion situation; making a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and taking the network condition into consideration when making the decision; directing the wireless terminal either to remain in the first state or switch to the second state in accordance with the decision; providing load information regarding the load in the node and taking the load information into consideration when making the decision; providing congestion information regarding the network congestion situation on one or more channels of the radio access network and taking the congestion information into consideration when making the decision, wherein; below a lower load threshold, determining the cost of switching to the second state in terms of wireless terminal resource cost and the congestion information; above a higher load threshold, determining the cost of switching to the second state in terms of network resource cost and the congestion information; and between the lower load threshold and the higher load threshold, determining the cost of switching to the second state in terms of the congestion information and a combination of the wireless terminal resource cost and the network resource cost.
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31. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
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a capacity manager configured to monitor a network condition of the radio access network; a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision; wherein the network condition comprises load in the node, and wherein the capacity manager is further configured to provide load information regarding the load in the node to the radio resource manager, and wherein the radio resource manager is further configured to take the load information into consideration when making the decision; and wherein; below a lower load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of wireless terminal resource cost; above a higher load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of network resource cost; and between the lower load threshold and the higher load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of a combination of the wireless terminal resource cost and the network resource cost.
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32. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
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a capacity manager configured to monitor a network condition of the radio access network; a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision; wherein the network condition comprises load in the node, and wherein the capacity manager is further configured to provide load information regarding the load in the node to the radio resource manager, and wherein the radio resource manager is further configured to take the load information into consideration when making the decision; wherein the network condition comprises a network congestion situation, wherein the capacity manager is configured to provide congestion information regarding the network congestion situation on one or more channels of the radio access network to the radio resource manager and wherein the radio resource manager is further configured to take the congestion information into consideration when making the decision, wherein; below a lower load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of wireless terminal resource cost and the congestion information; above a higher load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of network resource cost and the congestion information; and between the lower load threshold and the higher load threshold the radio resource manager is configured to determine the cost of switching to the second state in terms of the congestion information and a combination of the wireless terminal resource cost and the network resource cost.
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33. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
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a capacity manager configured to monitor a network condition of the radio access network; a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision; wherein the radio resource control states include at least a CELL_DCH state and a CELL_FACH state, and wherein the radio resource manager is configured to make a decision regarding switching between the CELL_DCH state and the CELL_FACH state on the basis of at least one of the following parameters;
burst length, burst size, and bit rate; andwherein the radio resource manager is configured to make a decision to switch from CELL_DCH state to CELL_FACH state if a combination of the following parameters decreases below a respective threshold;
the burst length, the burst size, or the bit rate. - View Dependent Claims (34)
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35. A node for controlling transitions between radio resource control states for a wireless terminal in a radio access network, the radio resource control states comprising a first state and a second state, the node comprising:
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a capacity manager configured to monitor a network condition of the radio access network; a radio resource manager configured to make a decision whether to make a transition from the first state to the second state by determining whether (1) a cost of remaining in the first state is greater than (2) a cost of switching to the second state, and wherein the radio resource manager is configured to take the network condition into consideration when making the decision; wherein the radio resource control states include at least a CELL_DCH state and a CELL_FACH state, and wherein the radio resource manager is configured to make a decision regarding switching between the CELL_DCH state and the CELL_FACH state on the basis of at least one of the following parameters;
burst length, burst size, and bit rate; andwherein the threshold for at least one of the parameters burst length, burst size, and bit rate is different when switching from the CELL_FACH state to the CELL_DCH state than when switching from the CELL_DCH state to the CELL_FACH state.
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Specification