US 9,001,737 B2 · EMBMS service activation and maintenance procedure in multi-frequency networks

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a user service description (USD) message. When a frequency indicated in the USD message is not a current frequency, the apparatus determines that a system information message is received, determines that the frequency indicated in the USD message is included in the system information message, determines that the frequency is a neighboring cell frequency, sets a priority of the frequency to a highest priority, and measures a signal strength of the frequency when the frequency is included in the system information message, performs a cell reselection determination procedure based on the signal strength of the frequency, performs cell reselection to the neighboring cell based on a result of the cell reselection determination procedure, and acquires the multicast service in the neighboring cell on the frequency.

Claims58

Dependent claims

A method for acquiring a multicast service by a user equipment (UE), comprising:

receiving a user service description (USD) message, the USD message indicating a frequency of a multicast service of interest to the UE;
when the frequency indicated in the USD message is not a current frequency, the method further comprising:
determining that a system information message is received,
determining that the frequency indicated in the USD message is included in the system information message when the system information message is received,
determining that the frequency is a cell frequency of a neighboring cell, setting a priority of the frequency to a highest priority, and measuring a signal strength of the frequency when the frequency is included in the system information message,
performing a cell reselection determination procedure based on the signal strength of the frequency,
performing cell reselection to the neighboring cell based on a result of the cell reselection determination procedure, and
acquiring the multicast service from the neighboring cell on the frequency.

5 more elements

A method for acquiring a multicast service by a user equipment (UE), comprising:

receiving a user service description (USD) message, the USD message including at least one frequency of a multicast service of interest to the UE;
performing a search for other frequencies when the at least one frequency included in the USD message is not a current frequency, the search for other frequencies comprising:
determining that a system information message is received,
determining frequencies commonly included in the USD message and the system information message when the system information is received,
determining that the common frequencies are neighboring cell frequencies,
for an i-th common frequency, i=1 to N, wherein N is a total number of common frequencies, and until the multicast service is acquired successfully, the search for other frequencies further comprising:
setting a priority of the i-th common frequency to a highest priority,
measuring a signal strength of the i-th common frequency,
performing a cell reselection determination procedure based on the signal strength of the i-th common frequency,
performing cell reselection to a cell of the i-th common frequency based on a result of the cell reselection determination procedure,
acquiring the multicast service in the cell of the i-th common frequency when the cell reselection is performed, and
determining if the multicast service is acquired successfully;
and
receiving the multicast service when the multicast service is acquired successfully.

11 more elements

An apparatus for acquiring a multicast service, comprising:

means for receiving a user service description (USD) message, the USD message indicating a frequency of a multicast service of interest to the apparatus;
wherein the frequency indicated in the USD message is not a current frequency, the apparatus further comprising:
means for determining that a system information message is received,
means for determining that the frequency indicated in the USD message is included in the system information message when the system information message is received,
means for determining that the frequency is a cell frequency of a neighboring cell, setting a priority of the frequency to a highest priority, and measuring a signal strength of the frequency when the frequency is included in the system information message,
means for performing a cell reselection determination procedure based on the signal strength of the frequency,
means for performing cell reselection to the neighboring cell based on a result of the cell reselection determination procedure, and
means for acquiring the multicast service from the neighboring cell on the frequency.

5 more elements

An apparatus for acquiring a multicast service, comprising:

means for receiving a user service description (USD) message, the USD message including at least one frequency of a multicast service of interest to the apparatus;
means for performing a search for other frequencies when the at least one frequency included in the USD message is not a current frequency, the means for performing the search for other frequencies configured to:
determine that a system information message is received,
determine frequencies commonly included in the USD message and the system information message when the system information is received,
determine that the common frequencies are neighboring cell frequencies,
for an i-th common frequency, i=1 to N, wherein N is a total number of common frequencies, and until the multicast service is acquired successfully, the means for performing the search for other frequencies further configured to:
set a priority of the i-th common frequency to a highest priority,
measure a signal strength of the i-th common frequency,
perform a cell reselection determination procedure based on the signal strength of the i-th common frequency,
perform cell reselection to a cell of the i-th common frequency based on a result of the cell reselection determination procedure,
acquire the multicast service in the cell of the i-th common frequency when the cell reselection is performed, and
determine if the multicast service is acquired successfully;
and
means for receiving the multicast service when the multicast service is acquired successfully.

11 more elements

An apparatus for acquiring a multicast service, comprising:

a processing system configured to:
receive a user service description (USD) message, the USD message indicating a frequency of a multicast service of interest to the apparatus;
wherein the frequency indicated in the USD message is not a current frequency, the processing system further configured to:
determine that a system information message is received,
determine that the frequency indicated in the USD message is included in the system information message when the system information message is received,
determine that the frequency is a cell frequency of a neighboring cell, set a priority of the frequency to a highest priority, and measure a signal strength of the frequency when the frequency is included in the system information message,
perform a cell reselection determination procedure based on the signal strength of the frequency,
perform cell reselection to the neighboring cell based on a result of the cell reselection determination procedure, and
acquire the multicast service from the neighboring cell on the frequency.

6 more elements

An apparatus for acquiring a multicast service, comprising:

a processing system configured to:
receive a user service description (USD) message, the USD message including at least one frequency of a multicast service of interest to the apparatus;
perform a search for other frequencies when the at least one frequency included in the USD message is not a current frequency, the processing system configured to search for other frequencies further configured to:
determine that a system information message is received,
determine frequencies commonly included in the USD message and the system information message when the system information is received,
determine that the common frequencies are neighboring cell frequencies,
for an i-th common frequency, i=1 to N, wherein N is a total number of common frequencies, and until the multicast service is acquired successfully, the processing system configured to search for other frequencies further configured to:
set a priority of the i-th common frequency to a highest priority,
measure a signal strength of the i-th common frequency,
perform a cell reselection determination procedure based on the signal strength of the i-th common frequency,
perform cell reselection to a cell of the i-th common frequency based on a result of the cell reselection determination procedure,
acquire the multicast service in the cell of the i-th common frequency when the cell reselection is performed, and
determine if the multicast service is acquired successfully;
and
receive the multicast service when the multicast service is acquired successfully.

12 more elements

Dependencies are inferred from the claim text.

EMBMS service activation and maintenance procedure in multi-frequency networks

Life of this patent

EMBMS service activation and maintenance procedure in multi-frequency networks

Life of this patent

Abstract

Claims58