CN101399644B - Method, system and device for implementing hybrid automatic request retransmission feedback mechanism - Google Patents
Method, system and device for implementing hybrid automatic request retransmission feedback mechanism Download PDFInfo
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Abstract
The invention discloses a method for realizing a hybrid automatic request repeat feedback mechanism. The method comprises the following steps: a base station transmits a shared control channel (HS-SCCH) of a high-speed downlink shared channel, and a downlink scheduling control channel of high-speed downlink packet access; a terminal decodes the received HS-SCCH, and receives a data packet loaded on a high-speed physical downlink shared channel; and the terminal carries out hybrid automatic request repeat feedback on a shared information channel (HS-SICH) corresponding to the HS-SCCH and an uplink feedback channel of high-speed downlink packet access. The invention also discloses a system and base station side/terminal side equipment for realizing the hybrid automatic request repeat feedback mechanism. By adopting the method, the system and the equipment, information can be fed back on the HS-SICH.
Description
Technical Field
The invention relates to a hybrid automatic repeat request (HARQ) feedback technology, in particular to a method, a system and equipment for realizing an HARQ feedback mechanism based on a public high-speed downlink packet access radio network temporary identifier (H-RNTI).
Background
To meet the increasing demand of users for high speed packet data access services, 3GPP Rel5 introduced High Speed Downlink Packet Access (HSDPA) technology. Wherein Adaptive Modulation Coding (AMC) or HARQ technology is employed for implementing high order modulation; and a medium access control layer HSDPA (MAC-hs) entity is added on the base station side for realizing the fast scheduling of data. By adopting HSDPA key technologies such as AMC/HARQ and MAC-hs, the method not only can obtain higher user peak rate and cell data throughput rate, but also reduces data transmission delay.
After introducing the HSDPA technology, the channels introduced accordingly include: a High Speed Downlink Shared Channel (HS-DSCH); a High Speed Physical Downlink Shared Channel (HS-PDSCH); a Shared Control Channel for HS-DSCH (HS-SCCH); shared Information Channel (HS-SICH).
The HS-DSCH is used as a transmission channel of the HSDPA, is used for bearing downlink HSDPA data, completes the transmission of high-speed downlink data, and is mapped to the HS-PDSCH. A plurality of terminals (UEs) share the HS-DSCH through time division multiplexing and code division multiplexing. The HS-DSCH employs link adaptation techniques and is always accompanied by a Dedicated Physical Channel (DPCH) and one or more HS-SCCHs. The other channels, except the HS-DSCH, are physical channels. The uplink HS-SICH and the downlink HS-SCCH are shared control channels of two physical layers related to the HS-DSCH, and closed-loop control of data transmission is completed through the cooperation of the two control channels. Here, HS-SICH may also be referred to as HSDPA uplink feedback channel. The HS-SCCH may also be referred to as an HSDPA downlink scheduling control channel.
The HS-SCCH is a downlink control channel of HSDPA, occupies two code channels with a downlink Spreading Factor (SF) of 16, adopts a fixed Quadrature Phase Shift Keying (QPSK) modulation mode and is used for bearing control information of the HS-DSCH. For each Transmission Time Interval (TTI) of the HS-DSCH, the HS-SCCH is used for carrying HS-DSCH related downlink control information carried by the UE.
Table 1 below shows information carried by the HS-SCCH channel, and as shown in table 1, the control information carried by the HS-SCCH channel includes Transport Format Resource Indication (TFRI) information, HARQ information, H-RNTI information, and uplink synchronization control word (SS) information/uplink power control word (TPC) information. Wherein, the TFRI information is used to indicate the following transport format of the HS-DSCH, including the slot code channel allocation information, modulation scheme, and Transport Block Size (TBS) information of the HS-DSCH. The HARQ information includes a HARQ process identification Number, an incremental redundancy version Number, a new data indication, and a Cyclic Sequence of HS-SCCH channels (HCSN, HS-SCCH Cyclic Sequence Number) for HS-SCCH channel quality estimation. Here, different incremental redundancy version numbers determine different rate matching schemes, and different 16-QAM bit reordering schemes. The H-RNTI information is used to distinguish different UEs on this shared channel HS-DSCH.
| SS | Uplink synchronous control word | Uplink synchronization for maintaining HS-SICH |
| TPC | Uplink power control word | Closed loop power control for HS-SICH |
TABLE 1
The HS-SICH is an uplink control channel of HSDPA, occupies a code channel with uplink SF of 16, adopts a fixed QPSK modulation mode, and is used for responding to a data block on the received HS-DSCH by an ACK/NACK message and feeding back quality information of a downlink, namely HS-DSCH Channel Quality Indication (CQI) so as to better help a base station Node B to carry out scheduling. In addition, the HS-SICH also carries power control word (TPC) information for the downlink.
And the timing relation of the HSDPA shared channel and the control process of the HS-SCCH are specifically as follows: after the downlink data arrives, the Node B schedules and firstly sends downlink control information on the HS-SCCH; after receiving the HS-SCCH, the UE reserves time to decode the control information on the control channel; then, monitoring a data channel according to the control information, and correctly receiving downlink HSDPA data mapped on an HS-PDSCH by an HS-DSCH; and finally, feeding back the ACK/NACK message to the NodeB by using a corresponding HS-SICH channel.
At present, in various enhanced systems of HSDPA, such as an HSPA + system, in order to improve the data rate of a common channel and reduce time delay, a method of carrying common channel data through the HSDPA channel is adopted, correspondingly, a common H-RNTI mark is introduced, and a base station scheduler uses the common H-RNTI mark for addressing under the condition of not acquiring a special H-RNTI. And the base station scheduler generally adopts a non-feedback HARQ mechanism under the condition of addressing by using the public H-RNTI identifier, namely, the UE cannot feed back information on the HS-SICH under the condition of receiving the public H-RNTI. Here, the base station scheduler can only send data to a specific UE by using the dedicated H-RNTI, and thus each UE can be distinguished by using only the dedicated H-RNTI; the base station scheduler uses the public H-RNTI to represent a UE group, data can be sent to a plurality of UEs, and then each UE cannot be distinguished only by using the public H-RNTI, and a certain UE also needs to judge whether the data is sent to the UE according to the identification information of the high-level terminal in the received data packet, and distinguish each UE in this way.
In summary, since the HS-SICH is a channel for feeding back information, if there is no information to be fed back, this channel is idle, resulting in waste of channel resources. In addition, the prior art adopts the feedback-free HARQ mechanism, which inevitably results in the waste of channel resources/the reduction of system throughput. And for the HSDPA various enhanced level systems, a time division duplex mode is adopted, under the time division duplex mode, a one-to-one corresponding binding relationship is formed between a scheduling control channel of the HS-SCCH and a feedback channel of the HS-SICH, scheduling control information is sent through the HS-SCCH, and correspondingly, if a non-feedback HARQ mechanism is adopted, the channel resource waste of the HS-SICH corresponding to the H-SCCH is caused.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method for implementing HARQ feedback mechanism based on common H-RNTI, which can feed back information on HS-SICH when UE receives common H-RNTI.
The invention also aims to provide a system for realizing the HARQ feedback mechanism based on the common H-RNTI, which can feed back information on the HS-SICH under the condition that the UE receives the common H-RNTI.
The invention also aims to provide base station side/terminal side equipment for realizing the HARQ feedback mechanism based on the common H-RNTI, which can feed back information on the HS-SICH under the condition that the UE receives the common H-RNTI.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for realizing HARQ feedback mechanism based on common H-RNTI comprises the following steps:
A. a base station Node B sends a high-speed downlink packet access downlink scheduling control channel HS-SCCH; and the HS-SCCH carries the public H-RNTI information;
B. the terminal UE decodes the received HS-SCCH and receives a data packet carried on a high-speed physical downlink shared channel HS-PDSCH according to the public H-RNTI information;
C. and the UE performs HARQ feedback on a high-speed downlink packet access uplink feedback channel HS-SICH corresponding to the HS-SCCH according to the identification information of the high-level terminal in the received data packet.
Wherein, step A also includes before:
x1, the Node B judges whether the current data is point-to-multipoint PTM type data according to the data type in the data packet, if yes, the step X2 is executed; otherwise, executing the step A;
x2, the Node B sets the retransmission times and modulation coding mode for the current data; and executing the step A.
Wherein, step X1 is preceded by:
the wireless network controller adds a bit indicating the current data type into a data frame of the data packet, wherein the current data is data sent to a UE and identifies the current data type as a point-to-point PTP type; the current data is data sent to more than one UE, and the current data type is identified to be a PTM type.
Wherein, the step B is further as follows:
b1, the UE decodes the received HS-SCCH, judges that the public H-RNTI information is legal and then receives the data packet.
The step B1 of receiving the data packet specifically includes: the UE judges whether the decoding of the data packet is correct, if so, the UE submits the high level of the terminal to decode, and the step C is executed; otherwise, ending the current HARQ feedback process.
Wherein, the step C is specifically as follows: the terminal high layer judges whether the data packet is packaged with the high layer terminal identification information, if so, the terminal high layer informs a terminal physical layer to perform HARQ feedback, and the terminal physical layer performs HARQ feedback on the HS-SICH; otherwise, ending the current HARQ feedback process.
Wherein, still include after step C:
D. and after receiving the information for carrying out HARQ feedback, the base station scheduler carries out scheduling according to the channel quality measurement in the feedback information.
A system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system comprising: a base station side sending unit, a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit; wherein,
the base station side sending unit is used for sending the HS-SCCH and a data packet which needs to be sent by addressing through the public H-RNTI information;
a terminal side receiving unit, configured to receive the HS-SCCH and send the HS-SCCH to the terminal side decoding unit; receiving the data packet loaded on the HS-PDSCH according to the received public H-RNTI information;
a terminal side decoding unit, configured to decode the HS-SCCH, and send the public H-RNTI information obtained by decoding to the terminal side receiving unit;
and the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH.
Wherein, this system still includes: a base station side judgment decision unit and a base station side setting unit; wherein,
the base station side judgment decision unit is used for sending the result of judging whether the current data is of the point-to-multipoint PTM type to the base station side setting unit;
and the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
Wherein, this system still includes: and the base station side identification unit is used for identifying the current data type as a PTP type or a PTM type.
The system also comprises a terminal side judgment decision unit which is used for acquiring the public H-RNTI information from the terminal side decoding unit, judging that the public H-RNTI information is legal and then forwarding the public H-RNTI information to the terminal side receiving unit;
correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
Wherein the terminal side decoding unit is further configured to decode the data packet; correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
The terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with high-level terminal identification information.
The system also comprises a base station side scheduling unit which is used for obtaining the feedback information from the terminal side HARQ feedback unit and scheduling according to the channel quality measurement in the feedback information.
A base station side device for realizing a HARQ feedback mechanism based on a public H-RNTI comprises a base station side sending unit used for sending HS-SCCH and a data packet which needs to be sent by addressing through the public H-RNTI information.
Wherein, this equipment still includes: a base station side judgment decision unit and a base station side setting unit; wherein,
the base station side judgment decision unit is used for sending the result of judging whether the current data is of the point-to-multipoint PTM type to the base station side setting unit;
and the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
The device also comprises a base station side identification unit used for identifying the current data type as PTP type or PTM type.
The device also comprises a base station side scheduling unit which is used for obtaining the feedback information from the terminal side HARQ feedback unit and scheduling according to the channel quality measurement in the feedback information.
A terminal side device for implementing a HARQ feedback mechanism based on a common H-RNTI comprises: a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit; wherein,
a terminal side receiving unit, configured to receive the HS-SCCH and send to the terminal side decoding unit; receiving a data packet loaded on the HS-PDSCH according to the received common H-RNTI information;
a terminal side decoding unit, configured to decode the HS-SCCH, and send the public H-RNTI information obtained by decoding to the terminal side receiving unit;
and the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH.
The equipment also comprises a terminal side judgment decision unit which is used for acquiring the public H-RNTI information from the terminal side decoding unit, judging that the public H-RNTI information is legal and then forwarding the public H-RNTI information to the terminal side receiving unit;
correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
Wherein the terminal side decoding unit is further configured to decode the data packet; correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
The terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with high-level terminal identification information.
By adopting the invention, the feedback mechanism is provided under the condition of the public H-RNTI, and the UE can feed back information on the HS-SICH under the condition of receiving the public H-RNTI. Furthermore, after receiving the feedback information including ACK/NACK and CQI, the base station scheduler can perform scheduling according to the channel quality measurement in the feedback information, thereby well ensuring the performance index of the system throughput and being more beneficial to obtaining the optimal system throughput.
Drawings
FIG. 1 is a schematic flow chart of an implementation of an embodiment of the method of the present invention;
fig. 2 is a schematic flow chart of another embodiment of the method of the present invention.
Detailed Description
The core idea of the invention is as follows: and the UE can feed back information on the HS-SICH under the condition of receiving the public H-RNTI, and the UE determines whether to feed back HARQ information according to whether the received data packet contains the identification information of the high-level terminal.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
The first embodiment of the method is an implementation scheme capable of implementing a HARQ feedback mechanism on a terminal side. As shown in fig. 1, the implementation flow of this embodiment includes the following steps:
Here, the common H-RNTI information is used to complete the addressed transmission of the data packet. That is, a data packet transmitted to the UE is identified with the common H-RNTI information and transmitted, and then the UE receives the data packet according to the common H-RNTI information.
And 102, decoding the received HS-SCCH by the UE, and receiving a data packet carried on the HS-PDSCH from the Node B according to the public H-RNTI information acquired after decoding.
Wherein, the step 102 is further:
step 1021, the UE decodes the received HS-SCCH, judges that the public H-RNTI information is legal, and receives a data packet loaded on the HS-PDSCH according to the public H-RNTI information. Here, legality means that the common H-RNTI information is correct.
The step 1021 of receiving the data packet carried on the HS-PDSCH specifically includes:
step 1021a, the UE judges whether the HS-PDSCH data decoding of the data packet is correct, if so, the HS-PDSCH data decoding is delivered to a terminal high layer for decoding, and step 103 is executed; otherwise, HARQ feedback is not needed on the HS-SICH, and the current HARQ feedback process is ended.
And 103, the UE performs HARQ feedback on the HS-SICH corresponding to the HS-SCCH and the HSDPA uplink feedback channel according to the identification information of the high-level terminal in the received data packet.
Corresponding to step 1021a, step 103 specifically includes: the terminal high layer judges whether the received data packet carried on the HS-PDSCH is packaged with high layer terminal identification information, if so, the terminal high layer informs the terminal physical layer to perform HARQ feedback, the terminal physical layer performs HARQ feedback on the HS-SICH corresponding to the HS-SCCH, and the current HARQ feedback process is ended; otherwise, the terminal high layer informs the terminal physical layer not to perform HARQ feedback, and ends the current HARQ feedback process.
And step 104, after receiving the information for HARQ feedback, the base station scheduler performs scheduling according to the channel quality measurement in the feedback information.
Here, after receiving the feedback information, such as ACK/NACK and CQI, the base station scheduler may perform scheduling according to the channel quality measurement in the feedback information, thereby well ensuring the performance index of the system throughput and being more beneficial to obtaining the optimal system throughput.
For the first method embodiment, it is noted that when the base station scheduler uses the common H-RNTI for addressing, if the data packet is sent to a certain UE, the data packet includes high-level terminal identification information, and the UE is required to perform HARQ feedback, then the UE can determine whether the data packet is data belonging to itself according to the high-level terminal identification information included in the data packet, determine that the data packet is data belonging to itself, and the terminal high-level notifies the terminal physical layer to perform HARQ feedback. If the data packet is sent to a plurality of UEs, for example, the data packet is similar to service data of point-to-multipoint (PTM) type such as paging triggered by system message updating and system message updating, the data packet does not contain high-level terminal identification information, HARQ feedback does not need to be carried out by the UE, and after the high-level terminal correctly decodes, the physical layer of the terminal is informed not to carry out HARQ feedback.
The second embodiment of the method is an implementation scheme that besides the HARQ feedback mechanism can be implemented on the terminal side, a mechanism for determining whether the UE can perform HARQ feedback is added on the base station side. As shown in fig. 2, the implementation flow of this embodiment includes the following steps:
For example, for data carried on logical channels such as a Dedicated Control Channel (DCCH) and a Dedicated Traffic Channel (DTCH), the RNC directly identifies the current data type as a PTP type. For data carried on a Common Control Channel (CCCH) and a Paging Control Channel (PCCH), it needs to further determine whether a data packet contains high-level terminal identification information, and if the data packet contains the high-level terminal identification information, the current data type is identified as a PTP type. For data carried on logical channels such as a system Broadcast Control Channel (BCCH) and a Paging Control Channel (PCCH), when carrying messages such as system message update and paging triggered by the system message update, since a data packet does not include identification information of a higher-level terminal, the current data type is identified as a PTM type.
Here, the data packet includes an indication of the data type, which indicates whether the current data type is a PTP type or a PTM type.
And step 205, the UE decodes the received HS-SCCH and receives a data packet carried on the HS-PDSCH from the Node B according to the public H-RNTI information acquired after decoding.
Wherein, step 205 further comprises:
and step 2051, after the UE decodes the received HS-SCCH and judges that the public H-RNTI information is legal, the UE receives a data packet carried on the HS-PDSCH according to the public H-RNTI information.
The step 2051 of receiving the data packet specifically includes:
step 2051a, the UE determines whether the decoding of the data packet is correct, and if so, submits the data packet to a high layer of the terminal for decoding, and performs step 206; otherwise, HARQ feedback is not needed on the HS-SICH, and the current HARQ feedback process is ended.
And step 206, the UE carries out HARQ feedback on the HS-SICH corresponding to the HS-SCCH according to the identification information of the high-level terminal in the received data packet.
Corresponding to step 2051a, step 206 specifically includes: the terminal high level judges whether the data packet is packaged with high level terminal identification information, if yes, step 2061 is executed; otherwise, go to step 2062;
step 2061, judging that the current data type is PTP, the terminal high layer informs the terminal physical layer to perform HARQ feedback, the terminal physical layer performs HARQ feedback on HS-SICH, and the current HARQ feedback process is ended.
Step 2062, judging the current data type is PTM, the terminal high layer informs the terminal physical layer not to perform HARQ feedback, and ends the current HARQ feedback process.
And step 207, after receiving the information for performing HARQ feedback, the base station scheduler performs scheduling according to the channel quality measurement in the feedback information.
A comparison of two examples of the process according to the invention shows that: for the first embodiment of the method, when no feedback information is received on the HS-SICH, the base station scheduler defaults that the feedback information of the data packet is NACK, and performs retransmission until the maximum number of retransmissions is reached. Then, when the information does not include the high-level terminal identification information, HARQ feedback cannot be performed, which results in waste of retransmission resources. Node B cannot determine whether the data in the data packet can be HARQ fed back. For the second embodiment of the method, the RNC adds a data type indication to the data packet to indicate whether the data is addressed to one UE or to multiple UEs, and it knows whether the data type in the data packet is a PTP type or a PTM type. Then, the NodeB can determine whether the data in the data packet can be HARQ fed back according to the data type, and for the data type that cannot be HARQ fed back, the NodeB sets a reasonable retransmission number and modulation coding scheme, which can well ensure performance indexes such as system resources and throughput.
The system of the invention has the following implementation scheme:
a system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system comprising: a base station side transmitting unit, a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit.
The base station side sending unit is used for sending the HS-SCCH and a data packet which needs to be sent by addressing through the public H-RNTI information. A terminal side receiving unit, configured to receive the HS-SCCH and send the HS-SCCH to the terminal side decoding unit; and receiving the data packet carried on the HS-PDSCH according to the received common H-RNTI information. And the terminal side decoding unit is used for decoding the HS-SCCH and sending the public H-RNTI information obtained by decoding to the terminal side receiving unit. And the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH.
A system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system further comprising: a base station side judgment decision unit and a base station side setting unit.
The base station side judging and deciding unit is used for sending the judged result whether the current data is of the point-to-multipoint PTM type to the base station side setting unit. And the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
A system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system further comprising: and the base station side identification unit is used for identifying the current data type as a PTP type or a PTM type.
A system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system further comprising: and the terminal side judgment decision unit is used for acquiring the public H-RNTI information from the terminal side decoding unit, judging that the public H-RNTI information is legal and then forwarding the legal public H-RNTI information to the terminal side receiving unit. Correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
Here, the terminal-side decoding unit is further configured to decode the data packet. Correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
Furthermore, the terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with the high-level terminal identifier information.
A system for implementing a HARQ feedback mechanism based on a common H-RNTI, the system further comprising: and the base station side scheduling unit is used for acquiring the feedback information from the terminal side HARQ feedback unit and scheduling according to the channel quality measurement in the feedback information.
The implementation scheme of the base station side equipment comprises the following steps:
a base station side device for realizing a HARQ feedback mechanism based on a public H-RNTI comprises a base station side sending unit used for sending HS-SCCH and a data packet which needs to be sent by addressing through the public H-RNTI information.
A base station side device for implementing HARQ feedback mechanism based on common H-RNTI, the device also includes: a base station side judgment decision unit and a base station side setting unit.
The base station side judging and deciding unit is used for sending the judged result whether the current data is of the point-to-multipoint PTM type to the base station side setting unit. And the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
A base station side device for implementing HARQ feedback mechanism based on common H-RNTI, the device also includes: and the base station side identification unit is used for identifying the current data type as a PTP type or a PTM type.
A base station side device for implementing HARQ feedback mechanism based on common H-RNTI, the device also includes: and the base station side scheduling unit is used for acquiring the feedback information from the terminal side HARQ feedback unit and scheduling according to the channel quality measurement in the feedback information.
The implementation scheme of the terminal side equipment of the invention is as follows:
a terminal side device for implementing a HARQ feedback mechanism based on a common H-RNTI comprises: the device comprises a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit.
The terminal side receiving unit is used for receiving the HS-SCCH and sending the HS-SCCH to the terminal side decoding unit; and receiving the data packet carried on the HS-PDSCH according to the received common H-RNTI information. And the terminal side decoding unit is used for decoding the HS-SCCH and sending the public H-RNTI information obtained by decoding to the terminal side receiving unit. And the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH.
A terminal side device for implementing HARQ feedback mechanism based on common H-RNTI, the device further comprises: and the terminal side judgment decision unit is used for acquiring the public H-RNTI information from the terminal side decoding unit, judging that the public H-RNTI information is legal and then forwarding the legal public H-RNTI information to the terminal side receiving unit. Correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
Here, the terminal side decoding unit is further configured to decode the data packet; correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
Furthermore, the terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with the high-level terminal identifier information.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (21)
1. A method for realizing HARQ feedback mechanism based on common H-RNTI is characterized in that the method comprises the following steps:
A. a base station Node B sends information of a high-speed downlink packet access downlink scheduling control channel HS-SCCH; and the HS-SCCH carries the public H-RNTI information;
B. the terminal UE decodes the received HS-SCCH information and receives a data packet carried on a high-speed physical downlink shared channel HS-PDSCH according to the public H-RNTI information;
C. and the UE performs HARQ feedback on a high-speed downlink packet access uplink feedback channel HS-SICH corresponding to the HS-SCCH according to the identification information of the high-level terminal in the received data packet.
2. The method of claim 1, wherein step a is preceded by:
x1, the Node B judges whether the current data is point-to-multipoint PTM type data according to the data type in the data packet, if yes, the step X2 is executed; otherwise, executing the step A;
x2, the Node B sets the retransmission times and modulation coding mode for the current data; and executing the step A.
3. The method of claim 2, wherein step X1 is preceded by:
the wireless network controller adds a bit indicating the current data type into a data frame of the data packet, wherein the current data is data sent to a UE and identifies the current data type as a point-to-point PTP type; the current data is data sent to more than one UE, and the current data type is identified to be a PTM type.
4. A method according to claim 1, 2 or 3, characterized in that step B is further:
b1, the UE decodes the received HS-SCCH, judges that the public H-RNTI information is legal and then receives the data packet.
5. The method according to claim 4, wherein the receiving of the data packet in step B1 is specifically: the UE judges whether the decoding of the data packet is correct, if so, the UE submits the high level of the terminal to decode, and the step C is executed; otherwise, ending the current HARQ feedback process.
6. The method according to claim 5, wherein step C is specifically: the terminal high layer judges whether the data packet is packaged with the high layer terminal identification information, if so, the terminal high layer informs a terminal physical layer to perform HARQ feedback, and the terminal physical layer performs HARQ feedback on the HS-SICH; otherwise, ending the current HARQ feedback process.
7. The method of claim 4, further comprising, after step C:
D. and after receiving the information for carrying out HARQ feedback, the base station scheduler carries out scheduling according to the channel quality measurement in the feedback information.
8. A system for implementing HARQ feedback mechanism based on common H-RNTI is characterized in that the system comprises: a base station side sending unit, a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit; wherein,
the base station side sending unit is used for sending the information of the HS-SCCH and a data packet which needs to be sent by addressing through the public H-RNTI information;
a terminal side receiving unit, configured to receive the information of the HS-SCCH and send the information to the terminal side decoding unit; receiving the data packet loaded on the HS-PDSCH according to the received public H-RNTI information;
a terminal side decoding unit, configured to decode the HS-SCCH, and send the public H-RNTI information obtained by decoding to the terminal side receiving unit;
and the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH according to the high-level terminal identification information in the received data packet.
9. The system of claim 8, further comprising: a base station side judgment decision unit and a base station side setting unit; wherein,
the base station side judgment decision unit is used for sending the result of judging whether the current data is of the point-to-multipoint PTM type to the base station side setting unit;
and the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
10. The system of claim 9, further comprising: and the base station side identification unit is used for identifying the current data type as a PTP type or a PTM type.
11. The system according to claim 8, 9 or 10, further comprising a terminal side decision unit, configured to obtain the common H-RNTI information from the terminal side decoding unit, and forward the valid common H-RNTI information to the terminal side receiving unit after determining that the common H-RNTI information is valid;
correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
12. The system of claim 11, wherein the terminal-side decoding unit is further configured to decode the data packet; correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
13. The system according to claim 12, wherein the terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with higher layer terminal identification information.
14. The system of claim 11, further comprising a base station side scheduling unit, configured to obtain feedback information from the terminal side HARQ feedback unit, and perform scheduling according to a channel quality measurement in the feedback information.
15. A base station side device for realizing HARQ feedback mechanism based on public H-RNTI is characterized in that the device comprises a base station side sending unit, a high-level terminal identification information and a downlink control channel (HARQ) control channel (HS-SCCH), wherein the base station side sending unit is used for sending information of HS-SCCH and a data packet which needs to be sent by addressing of public H-RNTI information;
the device also comprises a base station side scheduling unit which is used for obtaining the feedback information from the terminal side HARQ feedback unit and scheduling according to the channel quality measurement in the feedback information.
16. The apparatus of claim 15, further comprising: a base station side judgment decision unit and a base station side setting unit; wherein,
the base station side judgment decision unit is used for sending the result of judging whether the current data is of the point-to-multipoint PTM type to the base station side setting unit;
and the base station side setting unit is used for setting corresponding retransmission times and modulation coding modes for the current data.
17. The apparatus according to claim 15, wherein the apparatus further comprises a base station side identification unit for identifying whether the current data type is a PTP type or a PTM type.
18. A terminal side device for implementing a HARQ feedback mechanism based on a common H-RNTI is characterized by comprising: a terminal side receiving unit, a terminal side decoding unit and a terminal side HARQ feedback unit; wherein,
a terminal side receiving unit, configured to receive information of the HS-SCCH and send the information to the terminal side decoding unit; receiving a data packet loaded on the HS-PDSCH according to the received common H-RNTI information;
a terminal side decoding unit, configured to decode the HS-SCCH, and send the public H-RNTI information obtained by decoding to the terminal side receiving unit;
and the terminal side HARQ feedback unit is used for carrying out HARQ feedback on the HS-SICH corresponding to the HS-SCCH according to the high-level terminal identification information in the received data packet.
19. The apparatus according to claim 18, further comprising a terminal side decision unit, configured to obtain the common H-RNTI information from the terminal side decoding unit, and forward the common H-RNTI information to the terminal side receiving unit after determining that the common H-RNTI information is legal;
correspondingly, the terminal side receiving unit is further configured to receive the data packet according to the legal common H-RNTI information.
20. The apparatus of claim 19, wherein the terminal-side decoding unit is further configured to decode the data packet; correspondingly, the terminal side decision unit is further configured to obtain a decoding result of the data packet from the terminal side decoding unit, and notify the terminal side decoding unit of a result indicating whether the data packet is decoded correctly.
21. The apparatus of claim 20, wherein the terminal side decision unit is further configured to notify the terminal side HARQ feedback unit of whether the determined data packet is encapsulated with higher-layer terminal identification information.
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| CN101877630B (en) * | 2009-04-28 | 2015-06-03 | 中兴通讯股份有限公司 | Method and system for realizing hybrid automatic repeat request (HARQ) |
| US8767797B2 (en) * | 2009-10-05 | 2014-07-01 | Qualcomm Incorporated | Apparatus and method for providing HARQ feedback in a multi-carrier wireless communication system |
| CN101771514B (en) * | 2010-02-12 | 2015-06-03 | 中兴通讯股份有限公司 | Multi-level feedback method of channel information and system thereof |
| WO2011157233A1 (en) * | 2010-06-18 | 2011-12-22 | Mediatek Inc. | Resource allocation of uplink harq feedback channel for carrier aggregation in ofdma systems |
| US8660107B2 (en) | 2010-06-18 | 2014-02-25 | Mediatek Inc. | Uplink HARQ feedback channel design for carrier aggregation in OFDMA systems |
| CN102595624B (en) * | 2011-01-17 | 2014-07-09 | 华为技术有限公司 | Scheduling method based on group, UE and base station |
| CN103999391A (en) * | 2012-11-15 | 2014-08-20 | 华为技术有限公司 | Channel transmission method, device, base station and terminal |
| CN105024781B (en) * | 2014-04-30 | 2019-06-21 | 中兴通讯股份有限公司 | A kind of processing method of feedback information, apparatus and system |
| WO2020000234A1 (en) * | 2018-06-27 | 2020-01-02 | 华为技术有限公司 | Method for parsing data and relevant device |
| CN113923698B (en) * | 2020-07-10 | 2022-07-05 | 荣耀终端有限公司 | Method, device and chip for processing downlink channel abnormal retransmission |
| WO2022061912A1 (en) * | 2020-09-28 | 2022-03-31 | Mediatek Singapore Pte. Ltd. | Methods and apparatus of harq operation for transmission of multicast broadcast service |
| CN114499771B (en) * | 2020-11-13 | 2023-07-18 | 成都鼎桥通信技术有限公司 | Feedback and retransmission method and device for ACK/NACK information of MBS |
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