Multicast broadcast service reception availability
AssigneeZte Corporation
InventorsTao Qi, Lin Chen, Hao Zhu, Liping Wang
Life of this patent
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Abstract
Multicast Broadcast Services (“MBS”) is a service provided to user equipment (“UE”) devices. As the UE moves through the network, it may switch between network cells. Some network cells include MBS service availability, which will be considered by the UE when selecting cells. MBS service continuity can be maintained when the UE considers MBS service availability for selecting network cells. The service availability of MBS can be determined by the UE while the UE is in an inactive or idle state.
Claims18
A method for service continuity of a multicast broadcast service (“MBS”) performed by a user equipment (“UE”) in a wireless network, the method comprising:
- receiving control information, the control information comprising a service area information, a frequency information, a cell information, and an association between the service area information, the frequency information, and the cell information;
- determining a service availability for the MBS based on the control information;
- receiving, when the UE has reselected a cell which provides a UE interested MBS service, the MBS service based on a last valid MBS resource allocation configuration received before the cell reselection, wherein the UE continues using the last valid MBS resource allocation configuration to receive the MBS service without receiving a new MBS resource allocation configuration from the reselected cell, the last valid MBS resource allocation configuration is within a same modification period from a moment the UE received the configuration in a previous cell until the UE has successfully reselected a new cell, and the UE monitors a multicast control channel (MCCH) in a next repetition period or modification period;
- and
- avoiding performing packet data convergence protocol (“PDCP”) re-establishment at cell change.
A method for service continuity of a multicast broadcast service (“MBS”) performed by a network element in a wireless network, the method comprising:
- providing control information over an access layer, wherein the control information comprises a service area information, a frequency information, a cell information, and an association between the service area information, the frequency information, and the cell information, wherein:
- the control information is used by a user equipment (UE) to determine a service availability for the MBS;
- and
- sending, when the UE has reselected a cell which provides a UE interested MBS service, the MBS service based on a last valid MBS resource allocation configuration sent before the cell reselection, wherein the UE is configured to avoid performing data convergence protocol (“PDCP”) re-establishment at cell change, and the UE continues using the last valid MBS resource allocation configuration to receive the MBS service without receiving a new MBS resource allocation configuration from the reselected cell, and wherein the last valid MBS resource allocation configuration is within a same modification period from a moment the UE received the configuration in a previous cell until the UE has successfully reselected a new cell, and the UE monitors a multicast control channel (MCCH) in a next repetition period or modification period.
A method for service continuity of a multicast broadcast service (“MBS”) performed by a user equipment (“UE”) in a wireless network, the method comprising:
- receiving a service area information of the MBS;
- determining a service availability for the MBS based on the service area information;
- receiving, when the UE has reselected a cell belonging to a configured service area, a MBS service based on a last valid MBS resource allocation configuration received before the cell reselection, wherein the UE continues using the last valid MBS resource allocation configuration to receive the MBS service without receiving a new MBS resource allocation configuration from the reselected cell, the last valid MBS resource allocation configuration is within a same modification period from a moment the UE received the configuration in a previous cell until the UE has successfully reselected a new cell, and the UE monitors a multicast control channel (MCCH) in a next repetition period or modification period;
- and
- avoiding performing packet data convergence protocol (“PDCP”) re-establishment at cell change.
Dependencies are inferred from the claim text.