摘要:
The present invention is related to integrated multi-datastream transmission technology, more particularly, to integrated multi-datastream modulation technology. According to one aspect of the present invention, there is provided a modulation equipment (10), including: a symbol integration means (101), configured to combine a first bit stream with a second bit stream to form a symbol to be modulated; a symbol mapping means (102), configured to map the symbol to be modulated into a QAM modulation symbol according to a set of predetermined mapping rules; wherein, in the set of predetermined mapping rules, multiple constellations corresponding to any first bit stream are located in at least two quadrants in the constellation diagram, while multiple constellations corresponding to any second bit stream are located in at least two quadrants in the constellation diagram. The integrated transmission of a first service data and a second service data (e.g., unicast service data and MBMS data) may be supported and has a better performance than the prior art especially in single cell scenario by using the method, equipment and device in the present invention.
摘要:
A dirty paper precoding method implemented by using phase reshaping at the transmitter side, wherein the method comprises: subtracting interference signal from intended signal to obtain difference signal; determining constellation size for constellation extension according to amplitude-related information of interference signal and intended signal; extendedly mapping original constellation block of the difference signal to extended constellation block having the determined constellation size by constellation extension processing, according to the determined constellation size for constellation extension, wherein, the extended constellation block being proportionally enlarged to be closer to origin of constellation coordinate compared with original constellation block; and performing phase reshaping of each constellation point of extended constellation block corresponding to the difference signal, wherein, the phase reshaping making constellation point of extended constellation block of difference signal corresponding to specific constellation point of intended signal to be mapped into the same constellation quadrant as that of the specific constellation point.
摘要:
The present invention is related to integrated multi-datastream transmission technology, more particularly, to integrated multi-datastream modulation technology. According to one aspect of the present invention, there is provided a modulation equipment (10), including: a symbol integration means (101), configured to combine a first bit stream with a second bit stream to form a symbol to be modulated; a symbol mapping means (102), configured to map the symbol to be modulated into a QAM modulation symbol according to a set of predetermined mapping rules; wherein, in the set of predetermined mapping rules, multiple constellations corresponding to any first bit stream are located in at least two quadrants in the constellation diagram, while multiple constellations corresponding to any second bit stream are located in at least two quadrants in the constellation diagram. The integrated transmission of a first service data and a second service data (e.g., unicast service data and MBMS data) may be supported and has a better performance than the prior art especially in single cell scenario by using the method, equipment and device in the present invention.
摘要:
A method for providing a multicast service in a communication system and an apparatus for implementing the method are provided in the present invention. The communication system comprises at least one user equipment and a server for providing a service to the at least one user equipment. The method comprises steps of: determining, by the server, an MBMS multicast group to provide a multicast service; transmitting, by the server, MBMS service control information required to provide an MBMS service to user equipments within the MBMS multicast group, to a BM-SC in an e-MBMS network; determining, by the BM-SC, an MBMS service area and triggering in the MBMS service area an MBMS bearer setup procedure for user equipments within the MBMS multicast group, based on the received MBMS service control information; forwarding, by the server, data to provide a service to the BM-SC; and distributing, by the BM-SC, the data to each of the user equipments within the MBMS multicast group, via the set up MBMS bearer. The method according to the present invention enables to perform multicast within an MBMS multicast group in case that the multicast is not supported by a radio network.
摘要:
The present invention provides a method of data retransmission in MBMS (Multimedia Broadcast/Multicast Service), comprising: a step in which a base station allocates an uplink time-frequency resource block to mobile stations; a step in which the mobile stations feed back uplink feedback signalings with respect to the received downlink MBMS service data to the base station on the allocated uplink time-frequency resource block, wherein the uplink feedback signalings with respect to one and the same downlink MBMS service data are combined in one and the same uplink time-frequency resource, and the uplink feedback signalings with respect to different downlink MBMS service data are multiplexed in one uplink time-frequency resource block; a step in which the base station decides whether to retransmit a data block based on the fed-back uplink feedback signalings.
摘要:
A dirty paper precoding method implemented by using phase reshaping at the transmitter side, wherein the method comprises: subtracting interference signal from intended signal to obtain difference signal; determining constellation size for constellation extension according to amplitude-related information of interference signal and intended signal; extendedly mapping original constellation block of the difference signal to extended constellation block having the determined constellation size by constellation extension processing, according to the determined constellation size for constellation extension, wherein, the extended constellation block being proportionally enlarged to be closer to origin of constellation coordinate compared with original constellation block; and performing phase reshaping of each constellation point of extended constellation block corresponding to the difference signal, wherein, the phase reshaping making constellation point of extended constellation block of difference signal corresponding to specific constellation point of intended signal to be mapped into the same constellation quadrant as that of the specific constellation point.
摘要:
The present invention provides an Evolved Multimedia Broadcast/Multicast Service (EMBMS) access gateway supporting network multicast, comprising: receiving/responding means for receiving a Multimedia Broadcast/Multicast Service (MBMS) Session Start message from a Broadcast/Multicast-Service Center (BM-SC) and for returning a response message to the BM-SC after receiving the MBMS Session Start message; storage means for storing a mapping relationship between respective MBMS service areas (SAs) and respective base stations; determining means for determining base station(s) associated with the MBMS based on the stored mapping relationship when the receiving/responding means receives the MBMS Session Start message; and transmitting means for transmitting the MBMS Session Start message to the determined bases station(s).
摘要:
Embodiments of the present invention provide a method and apparatus for performing MBMS service communications and a method and apparatus for receiving an MBMS service. Specifically, there is provided a method for performing MBMS service communications, comprising acquiring location area information of an MBMS service distribution; and notifying a UE of the location area information of the MBMS service distribution. Further, there is provided a method for receiving an MBMS service, comprising receiving location area information of an MBMS service distribution; comparing location information of a UE with the location area information of the MBMS service distribution; and determining whether to read an MCCH and MCCH information change notification based on a comparison result.
摘要:
The present invention provides a method of data retransmission in MBMS (Multimedia Broadcast/Multicast Service), comprising: a step in which a base station allocates an uplink time-frequency resource block to mobile stations; a step in which the mobile stations feed back uplink feedback signalings with respect to the received downlink MBMS service data to the base station on the allocated uplink time-frequency resource block, wherein the uplink feedback signalings with respect to one and the same downlink MBMS service data are combined in one and the same uplink time-frequency resource, and the uplink feedback signalings with respect to different downlink MBMS service data are multiplexed in one uplink time-frequency resource block; a step in which the base station decides whether to retransmit a data block based on the fed-back uplink feedback signalings.
摘要:
The present invention relates to a method for establishing a service in a first frequency in a communication network, wherein the first frequency does not support the service or supports it in a limited way, the method comprises the following steps: determining the service to be established, re-selecting or redirecting to a second frequency that is suitable for the service, so as to carry out the service in the second frequency. The present invention also relates to user equipment and a network apparatus for establishing a service in a first frequency in a communication network, wherein the first frequency does not support the service or supports it in a limited way. According to the present invention, a non-MBMS service may be established in the MBMS dedicated frequency, so as to carry out the non-MBMS service in the normal frequency.