Method and apparatus of mapping one or more messages onto transmission resource

Patent metadata

Field	Value
Publication number	US-9712311-B2
Application number	US-201314110160-A
Country	US
Kind code	B2
Filing date	Sep 20, 2013
Priority date	Apr 30, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

Method in a network node of mapping one or more messages onto transmission resource for transmitting to a wireless device. The one or more messages are processed by the network node. The network node and the wireless device are adapted to be comprised in a wireless communications network. The network node maps the one or more processed messages onto the transmission resource. This is performed according to indexing information comprised in the one or more messages, and to a precalculated mapping table. The precalculated mapping table is calculated prior to obtaining the one or more messages to be mapped. The network node, the communications network, a second network node, a core network node in the wireless communications network, and methods therein are described.

First claim

The invention claimed is:

1. A method, in a network node, of mapping one or more messages onto a transmission resource for transmitting to a wireless device, wherein the one or more messages are processed by the network node, wherein the network node and the wireless device are adapted to be comprised in a wireless communications network, the method comprising:
preprocessing the one or more messages to encode the one or more messages into a channel;
performing bit scrambling on the preprocessed one or more messages;
modulating the scrambled preprocessed one or more messages;
performing layer mapping on the modulated scrambled preprocessed one or more messages;
performing precoding on the layer-mapped modulated scrambled preprocessed one or more messages;
translating groups of bits, from the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped, and precoded, into modulation scheme units; and
mapping the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped, and precoded onto the transmission resource, according to indexing information comprised in the one or more messages, and according to a precalculated mapping table, wherein the precalculated mapping table is calculated prior to obtaining the one or more messages to be mapped and wherein the mapping comprises using the indexing information to access entries of the precalculated mapping table.

2. The method of claim 1 , wherein the precalculated mapping table comprises a map of indexed information in the transmission resource, the indexed information comprising one or more indexes, and one or more indexed information units, wherein each of the one or more indexed information units has a corresponding index of the one or more indexes, and the transmission resource comprises one or more transmission units, wherein each of the one or more indexes of the indexed information is allocated a transmission resource unit, and wherein each of the one or more indexes in the indexed information corresponds to indexing information comprised in the one or more messages.

3. The method of claim 1 , further comprising precalculating the mapping table to map the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped, and precoded onto the transmission resource.

4. The method of claim 1 , wherein the mapping is performed using a frequency-first algorithm.

5. The method of claim 1 , further comprising obtaining the one or more messages.

6. The method of claim 1 , further comprising transmitting the transmission resource comprising the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped, and precoded.

7. The method of claim 6 , wherein the the transmission resource is transmitted to the wireless device.

8. The method of claim 1 , wherein each of the one or more messages comprises downlink information.

9. The method of claim 1 , wherein each of the one or more messages is a Downlink Control Information (DCI) message.

10. The method of claim 1 , wherein the transmission resource is one or more Resource Element (RE) groups.

11. The method of claim 1 , wherein the channel is a Physical Downlink Control Channel.

12. The method of claim 1 , wherein the precalculated mapping table is a mapping table of indexed modulation scheme units, and wherein the indexed modulation scheme units are indexed quadruplets associated with a Quadrature Phase Shift Keying modulation scheme.

13. The method of claim 1 , wherein ones of the one or more messages are one of:
mapped,
preprocessed,
bit scrambled,
modulated,
layer-mapped,
precoded and
translated,
in parallel with other ones of the one or more messages.

14. A method in a network node of mapping one or more messages onto transmission resource for transmitting to a wireless device, wherein the one or more messages are processed by the network node, the network node and the wireless device being adapted to be comprised in a wireless communications network, the method comprising:
mapping the one or more processed messages onto the transmission resource, according to indexing information comprised in the one or more messages, and according to a precalculated mapping table, wherein the precalculated mapping table is calculated prior to obtaining the one or more messages to be mapped and wherein the mapping comprises using the indexing information to access entries of the precalculated mapping table,
wherein the one or more processed messages comprise the one or more messages, that have undergone at least one of the following actions by the network node:
preprocessing the one or more messages to encode the one or more messages into a channel,
performing bit scrambling on the preprocessed one or more messages,
modulating the scrambled preprocessed one or more messages,
performing layer mapping on the modulated scrambled preprocessed one or more messages,
performing precoding on the layer-mapped modulated scrambled preprocessed one or more messages, and
translating groups of bits from the preprocessed one or more messages that are at least one of modulated, layer-mapped, precoded, and scrambled into modulation scheme units, and

wherein ones of the one or more messages are one of:
mapped,
preprocessed,
bit scrambled,
modulated,
layer-mapped,
precoded and
translated,
in parallel with other ones of the one or more messages.

15. A network node adapted to map one or more messages onto transmission resource configured to be transmitted to a wireless device, the network node configured to process the one or more messages, and wherein the network node and the wireless device are adapted to be comprised in a wireless communications network, the network node comprising:
a preprocessing circuit configured to preprocess the one or more messages to encode the one or more messages into a channel;
a scrambling circuit configured to perform bit scrambling on the preprocessed one or more messages;
a modulating circuit configured to modulate the scrambled preprocessed one or more messages;
a layer-mapping circuit configured to perform layer mapping on the modulated scrambled preprocessed one or more messages;
a precoding circuit configured to perform precoding on the layer-mapped modulated scrambled preprocessed one or more messages;
a translating circuit configured to translate groups of bits from the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped and precoded into modulation scheme units; and
a mapping circuit configured to map the scrambled preprocessed one or more messages that are one or more of modulated, layer-mapped and precoded onto the transmission resource, according to indexing information comprised in the one or more messages, and according to a precalculated mapping table, wherein the precalculated mapping table is configured to be calculated prior to obtaining the one or more messages to be mapped and wherein the mapping circuit is configured to use the indexing information to access entries of the precalculated mapping table.

16. The network node of claim 15 , wherein the precalculated mapping table comprises a map of indexed information in the transmission resource, the indexed information comprising one or more indexes, and one or more indexed information units, each with its corresponding index of the one or more indexes, and the transmission resource comprising one or more transmission units, wherein each of the one or more indexes of the indexed information is configured to be allocated a transm

Assignees

• Ericsson Telefon Ab L M
• ERICSSON TELEFON AB L M (publ)

Inventors

• Ivanov Sergey
• Leblanc Christien
• Sundberg Petter
• Wiberg Niclas

Classifications

• H04W72/00

  Local resource management · CPC title

• H04L5/003

  Arrangements for allocating sub-channels of the transmission path · CPC title

• H04L5/0058 Primary

  Allocation criteria · CPC title

• H04W48/12

  using downlink control channel · CPC title