Frequency layer dispersion
First Claim
1. Method for execution in user equipment, comprising:
- operating on a first frequency;
receiving an information element having preferred frequency information for a broadcast service;
storing frequency information about the first frequency;
moving to the preferred frequency;
receiving the broadcast service;
receiving an information element instructing the user equipment to release a point to multipoint radio bearer;
receiving an information element indicating broadcast dispersion; and
if a suitable cell in the first frequency is available, selecting the suitable cell.
1 Assignment
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Accused Products
Abstract
User Equipment (UE) in receipt of a session start signal indicating a session frequency to use for a session along with other user equipment uses the session frequency until a session stop message is received and then changes to a frequency selected to avoid subsequent use of a same frequency used by the other user equipment. For instance, when the UE receives a Multimedia Broadcast Multicast Service (MBMS) session start signal and it contains a preferred frequency, the Radio Resource Control (RRC) layer of the UE could store the frequency of the serving cell for later reference. The UE then converges to the preferred frequency for the duration of the session. When the UE receives a session stop, RRC layer retrieves the previously stored information about the pre-session frequency and requests the physical layer (L1) to select a cell on the frequency where it was previously camped on.
41 Citations
18 Claims
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1. Method for execution in user equipment, comprising:
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operating on a first frequency;
receiving an information element having preferred frequency information for a broadcast service;
storing frequency information about the first frequency;
moving to the preferred frequency;
receiving the broadcast service;
receiving an information element instructing the user equipment to release a point to multipoint radio bearer;
receiving an information element indicating broadcast dispersion; and
if a suitable cell in the first frequency is available, selecting the suitable cell. - View Dependent Claims (2)
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3. Method for execution in user equipment, comprising:
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receiving, in said user equipment, a session start signal indicating a session frequency to use for a session, saving, in said user equipment, a pre-session frequency in use by said user equipment prior to receiving said session start signal, and using said session frequency until a session stop message is received and then retrieving said pre-session frequency saved in said step of saving and switching back to using said pre-session frequency if available. - View Dependent Claims (6)
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4. Method for execution in user equipment, comprising:
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receiving a session start signal indicating a session frequency to use for a session along with other user equipment, and using said session frequency until a session stop message is received and then changing to a frequency selected to avoid subsequent use of a same frequency used by said other user equipment . - View Dependent Claims (5, 7)
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8. User equipment, comprising:
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means for receiving a session start signal indicating a session frequency to use for a session along with other user equipment; and
means for using said session frequency until a session stop message is received and then changing to a frequency selected to avoid subsequent use of a same frequency used by said other user equipment . - View Dependent Claims (9, 10)
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11. User equipment, comprising:
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means for receiving a session start signal indicating a session frequency to use for a session, means for saving a pre-session frequency in use by said user equipment prior to receiving said session start signal, and means for using said session frequency until a session stop message is received and then retrieving said pre-session frequency saved in said step of saving and switching back to using said pre-session frequency if available. - View Dependent Claims (12)
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13. User equipment, comprising:
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means for operating on a first frequency;
receiving an information element having preferred frequency information for a broadcast service;
means for storing frequency information about the first frequency;
means for moving to the preferred frequency;
means for receiving the broadcast service;
means for receiving an information element instructing the user equipment to release a point to multipoint radio bearer;
means for receiving an information element indicating broadcast dispersion; and
means for selecting a suitable cell if the suitable cell is available in the first frequency.
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14. System, comprising:
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a network element; and
user equipment, the user equipment comprising;
means for receiving a session start signal from the network element, indicating a session frequency to use for a multimedia broadcast service session, means for saving a pre-session frequency in use by said user equipment prior to receiving said session start signal, and means for using said session frequency until a session stop message is received and then retrieving said pre-session frequency saved by said means for saving, and switching back to using said pre-session frequency if available. - View Dependent Claims (15)
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16. Network element for use in a reselection process involving user equipment receiving multimedia broadcast multicast services, comprising:
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means for sending a multimedia broadcast multicast service session signal for initiating a session on a frequency indicated by said signal;
means for exchanging signals with said user equipment engaged in said multimedia broadcast service session;
means for terminating said session by sending a stop signal to said user equipment along with information on available frequencies in a cell or cells nearby the user equipment; and
means for receiving information from said user equipment concerning which frequency is selected by the user equipment, preferably the pre-session frequency if available.
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17. Computer program stored on a computer-readable medium for execution in user equipment, said execution of said program comprising the steps of:
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receiving, in said user equipment, a session start signal indicating a session frequency to use for a session, saving, in said user equipment, a pre-session frequency in use by said user equipment prior to receiving said session start signal, and using said session frequency until a session stop message is received and then retrieving said pre-session frequency saved in said step of saving, and switching back to using said pre-session frequency if available.
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18. Chip hardware for executing the steps of:
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receiving, in user equipment, a session start signal indicating a session frequency to use for a session, saving, in said user equipment, a pre-session frequency in use by said user equipment prior to receiving said session start signal, and using said session frequency until a session stop message is received and then retrieving said pre-session frequency saved in said step of saving, and switching back to using said pre-session frequency if available.
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Specification